/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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-19 04:03:58,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-19 04:03:58,533 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 04:03:58,538 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-19 04:03:58,538 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-19 04:03:58,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-19 04:03:58,569 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-19 04:03:58,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-19 04:03:58,570 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-19 04:03:58,574 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-19 04:03:58,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-19 04:03:58,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-19 04:03:58,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-19 04:03:58,577 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-19 04:03:58,578 INFO L153 SettingsManager]: * Use SBE=true [2023-12-19 04:03:58,578 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-19 04:03:58,578 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-19 04:03:58,579 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-19 04:03:58,579 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-19 04:03:58,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-19 04:03:58,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-19 04:03:58,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-19 04:03:58,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-19 04:03:58,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-19 04:03:58,581 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-19 04:03:58,581 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-19 04:03:58,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-19 04:03:58,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-19 04:03:58,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-19 04:03:58,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-19 04:03:58,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-19 04:03:58,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-19 04:03:58,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:03:58,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-19 04:03:58,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-19 04:03:58,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-19 04:03:58,584 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-19 04:03:58,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-19 04:03:58,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-19 04:03:58,585 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-19 04:03:58,585 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-19 04:03:58,585 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-19 04:03:58,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-19 04:03:58,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-19 04:03:58,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-19 04:03:58,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-19 04:03:58,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-19 04:03:58,867 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-19 04:03:58,868 INFO L274 PluginConnector]: CDTParser initialized [2023-12-19 04:03:58,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label53.c [2023-12-19 04:04:00,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-19 04:04:00,560 INFO L384 CDTParser]: Found 1 translation units. [2023-12-19 04:04:00,562 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label53.c [2023-12-19 04:04:00,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb0c0df27/489df70c01534e649387ec953b3e8218/FLAG1e3e2f7b8 [2023-12-19 04:04:00,627 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb0c0df27/489df70c01534e649387ec953b3e8218 [2023-12-19 04:04:00,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-19 04:04:00,631 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-19 04:04:00,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-19 04:04:00,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-19 04:04:00,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-19 04:04:00,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:04:00" (1/1) ... [2023-12-19 04:04:00,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bbb443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:00, skipping insertion in model container [2023-12-19 04:04:00,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:04:00" (1/1) ... [2023-12-19 04:04:00,774 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-19 04:04:01,031 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_label53.c[4658,4671] [2023-12-19 04:04:01,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:04:01,938 INFO L202 MainTranslator]: Completed pre-run [2023-12-19 04:04:01,983 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_label53.c[4658,4671] [2023-12-19 04:04:02,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-19 04:04:02,475 INFO L206 MainTranslator]: Completed translation [2023-12-19 04:04:02,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02 WrapperNode [2023-12-19 04:04:02,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-19 04:04:02,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-19 04:04:02,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-19 04:04:02,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-19 04:04:02,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:02,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:03,069 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5587 [2023-12-19 04:04:03,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-19 04:04:03,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-19 04:04:03,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-19 04:04:03,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-19 04:04:03,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:03,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:03,275 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:03,515 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 04:04:03,516 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:03,516 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:03,855 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:03,882 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:03,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:03,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:04,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-19 04:04:04,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-19 04:04:04,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-19 04:04:04,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-19 04:04:04,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (1/1) ... [2023-12-19 04:04:04,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-19 04:04:04,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:04:04,063 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 04:04:04,073 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 04:04:04,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-19 04:04:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-19 04:04:04,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-19 04:04:04,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-19 04:04:04,187 INFO L241 CfgBuilder]: Building ICFG [2023-12-19 04:04:04,189 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-19 04:04:09,297 INFO L282 CfgBuilder]: Performing block encoding [2023-12-19 04:04:09,351 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-19 04:04:09,352 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-19 04:04:09,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:04:09 BoogieIcfgContainer [2023-12-19 04:04:09,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-19 04:04:09,354 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-19 04:04:09,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-19 04:04:09,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-19 04:04:09,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:04:00" (1/3) ... [2023-12-19 04:04:09,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb6d843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:04:09, skipping insertion in model container [2023-12-19 04:04:09,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:02" (2/3) ... [2023-12-19 04:04:09,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb6d843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:04:09, skipping insertion in model container [2023-12-19 04:04:09,358 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:04:09" (3/3) ... [2023-12-19 04:04:09,359 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label53.c [2023-12-19 04:04:09,377 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-19 04:04:09,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-19 04:04:09,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-19 04:04:09,450 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7bb4419, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-19 04:04:09,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-19 04:04:09,459 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 04:04:09,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-19 04:04:09,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:09,466 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] [2023-12-19 04:04:09,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:09,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:09,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1523899252, now seen corresponding path program 1 times [2023-12-19 04:04:09,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:09,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931418687] [2023-12-19 04:04:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:09,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:09,643 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 04:04:09,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:09,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931418687] [2023-12-19 04:04:09,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931418687] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:09,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:09,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:09,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210949355] [2023-12-19 04:04:09,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:09,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-19 04:04:09,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:09,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-19 04:04:09,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-19 04:04:09,699 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 04:04:09,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:09,805 INFO L93 Difference]: Finished difference Result 2071 states and 3881 transitions. [2023-12-19 04:04:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-19 04:04:09,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-19 04:04:09,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:09,827 INFO L225 Difference]: With dead ends: 2071 [2023-12-19 04:04:09,827 INFO L226 Difference]: Without dead ends: 1034 [2023-12-19 04:04:09,833 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 04:04:09,836 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 04:04:09,837 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 04:04:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2023-12-19 04:04:09,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2023-12-19 04:04:09,945 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 04:04:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1876 transitions. [2023-12-19 04:04:09,957 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1876 transitions. Word has length 30 [2023-12-19 04:04:09,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:09,958 INFO L495 AbstractCegarLoop]: Abstraction has 1034 states and 1876 transitions. [2023-12-19 04:04:09,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 04:04:09,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1876 transitions. [2023-12-19 04:04:09,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-19 04:04:09,959 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:09,959 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] [2023-12-19 04:04:09,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-19 04:04:09,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:09,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:09,961 INFO L85 PathProgramCache]: Analyzing trace with hash 935187208, now seen corresponding path program 1 times [2023-12-19 04:04:09,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:09,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949615586] [2023-12-19 04:04:09,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:09,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:10,149 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 04:04:10,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:10,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949615586] [2023-12-19 04:04:10,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949615586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:10,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:10,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:10,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737924760] [2023-12-19 04:04:10,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:10,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:10,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:10,158 INFO L87 Difference]: Start difference. First operand 1034 states and 1876 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 04:04:14,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:14,529 INFO L93 Difference]: Finished difference Result 2976 states and 5471 transitions. [2023-12-19 04:04:14,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:14,530 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-19 04:04:14,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:14,538 INFO L225 Difference]: With dead ends: 2976 [2023-12-19 04:04:14,538 INFO L226 Difference]: Without dead ends: 1943 [2023-12-19 04:04:14,541 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 04:04:14,542 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 924 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:14,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 538 Invalid, 3582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-12-19 04:04:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2023-12-19 04:04:14,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1872. [2023-12-19 04:04:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1871 states have (on average 1.7397113842864778) internal successors, (3255), 1871 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:14,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3255 transitions. [2023-12-19 04:04:14,588 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3255 transitions. Word has length 30 [2023-12-19 04:04:14,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:14,588 INFO L495 AbstractCegarLoop]: Abstraction has 1872 states and 3255 transitions. [2023-12-19 04:04:14,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 04:04:14,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3255 transitions. [2023-12-19 04:04:14,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-19 04:04:14,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:14,591 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:04:14,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-19 04:04:14,591 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:14,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:14,592 INFO L85 PathProgramCache]: Analyzing trace with hash 381986963, now seen corresponding path program 1 times [2023-12-19 04:04:14,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:14,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716017044] [2023-12-19 04:04:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:14,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:04:14,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:14,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716017044] [2023-12-19 04:04:14,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716017044] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:14,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:14,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:14,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335093377] [2023-12-19 04:04:14,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:14,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:14,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:14,869 INFO L87 Difference]: Start difference. First operand 1872 states and 3255 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:18,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:18,796 INFO L93 Difference]: Finished difference Result 5350 states and 9368 transitions. [2023-12-19 04:04:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:18,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-19 04:04:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:18,813 INFO L225 Difference]: With dead ends: 5350 [2023-12-19 04:04:18,813 INFO L226 Difference]: Without dead ends: 3479 [2023-12-19 04:04:18,817 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 04:04:18,818 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:18,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1077 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-19 04:04:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2023-12-19 04:04:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3478. [2023-12-19 04:04:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 1.5188380788035662) internal successors, (5281), 3477 states have internal predecessors, (5281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 5281 transitions. [2023-12-19 04:04:18,902 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 5281 transitions. Word has length 95 [2023-12-19 04:04:18,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:18,902 INFO L495 AbstractCegarLoop]: Abstraction has 3478 states and 5281 transitions. [2023-12-19 04:04:18,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:18,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 5281 transitions. [2023-12-19 04:04:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-19 04:04:18,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:18,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:04:18,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-19 04:04:18,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:18,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1244596280, now seen corresponding path program 1 times [2023-12-19 04:04:18,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:18,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257780737] [2023-12-19 04:04:18,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:18,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:18,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:04:19,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:19,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257780737] [2023-12-19 04:04:19,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257780737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:19,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:19,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296203556] [2023-12-19 04:04:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:19,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:19,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:19,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:19,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:19,071 INFO L87 Difference]: Start difference. First operand 3478 states and 5281 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:22,534 INFO L93 Difference]: Finished difference Result 10143 states and 15438 transitions. [2023-12-19 04:04:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:22,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-19 04:04:22,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:22,563 INFO L225 Difference]: With dead ends: 10143 [2023-12-19 04:04:22,563 INFO L226 Difference]: Without dead ends: 6666 [2023-12-19 04:04:22,572 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 04:04:22,573 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 977 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:22,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 877 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-19 04:04:22,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6666 states. [2023-12-19 04:04:22,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6666 to 6656. [2023-12-19 04:04:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6656 states, 6655 states have (on average 1.3729526671675432) internal successors, (9137), 6655 states have internal predecessors, (9137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:22,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6656 states to 6656 states and 9137 transitions. [2023-12-19 04:04:22,769 INFO L78 Accepts]: Start accepts. Automaton has 6656 states and 9137 transitions. Word has length 97 [2023-12-19 04:04:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:22,769 INFO L495 AbstractCegarLoop]: Abstraction has 6656 states and 9137 transitions. [2023-12-19 04:04:22,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6656 states and 9137 transitions. [2023-12-19 04:04:22,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-19 04:04:22,776 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:22,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:04:22,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-19 04:04:22,777 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:22,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:22,777 INFO L85 PathProgramCache]: Analyzing trace with hash -22296345, now seen corresponding path program 1 times [2023-12-19 04:04:22,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:22,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15026701] [2023-12-19 04:04:22,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:22,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:04:22,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:22,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15026701] [2023-12-19 04:04:22,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15026701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:22,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:22,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:22,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104949358] [2023-12-19 04:04:22,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:22,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:22,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:22,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:22,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:22,970 INFO L87 Difference]: Start difference. First operand 6656 states and 9137 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 04:04:26,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:26,308 INFO L93 Difference]: Finished difference Result 19636 states and 26968 transitions. [2023-12-19 04:04:26,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:26,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-19 04:04:26,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:26,352 INFO L225 Difference]: With dead ends: 19636 [2023-12-19 04:04:26,352 INFO L226 Difference]: Without dead ends: 12981 [2023-12-19 04:04:26,367 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 04:04:26,368 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 791 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1161 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:26,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1161 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 04:04:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2023-12-19 04:04:26,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 12174. [2023-12-19 04:04:26,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12173 states have (on average 1.2529368274049124) internal successors, (15252), 12173 states have internal predecessors, (15252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 15252 transitions. [2023-12-19 04:04:26,627 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 15252 transitions. Word has length 103 [2023-12-19 04:04:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:26,628 INFO L495 AbstractCegarLoop]: Abstraction has 12174 states and 15252 transitions. [2023-12-19 04:04:26,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 04:04:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 15252 transitions. [2023-12-19 04:04:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-12-19 04:04:26,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:26,634 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:04:26,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-19 04:04:26,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:26,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:26,635 INFO L85 PathProgramCache]: Analyzing trace with hash -393022001, now seen corresponding path program 1 times [2023-12-19 04:04:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809126417] [2023-12-19 04:04:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:26,976 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-19 04:04:26,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:26,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809126417] [2023-12-19 04:04:26,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809126417] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:04:26,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88681731] [2023-12-19 04:04:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:26,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:04:26,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:04:26,992 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 04:04:26,999 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 04:04:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:27,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:04:27,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:04:27,247 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-19 04:04:27,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:04:27,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88681731] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:27,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:04:27,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-19 04:04:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322650482] [2023-12-19 04:04:27,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:27,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:27,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:27,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:04:27,251 INFO L87 Difference]: Start difference. First operand 12174 states and 15252 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:30,714 INFO L93 Difference]: Finished difference Result 36311 states and 45490 transitions. [2023-12-19 04:04:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2023-12-19 04:04:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:30,771 INFO L225 Difference]: With dead ends: 36311 [2023-12-19 04:04:30,772 INFO L226 Difference]: Without dead ends: 24138 [2023-12-19 04:04:30,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-19 04:04:30,792 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1053 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:30,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 920 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 04:04:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24138 states. [2023-12-19 04:04:31,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24138 to 24120. [2023-12-19 04:04:31,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24120 states, 24119 states have (on average 1.2004229031054356) internal successors, (28953), 24119 states have internal predecessors, (28953), 0 states have call successors, (0), 0 states 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 04:04:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24120 states to 24120 states and 28953 transitions. [2023-12-19 04:04:31,222 INFO L78 Accepts]: Start accepts. Automaton has 24120 states and 28953 transitions. Word has length 119 [2023-12-19 04:04:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:31,223 INFO L495 AbstractCegarLoop]: Abstraction has 24120 states and 28953 transitions. [2023-12-19 04:04:31,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-19 04:04:31,224 INFO L276 IsEmpty]: Start isEmpty. Operand 24120 states and 28953 transitions. [2023-12-19 04:04:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-12-19 04:04:31,227 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:31,227 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:04:31,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-19 04:04:31,436 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,SelfDestructingSolverStorable5 [2023-12-19 04:04:31,437 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:31,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1580776181, now seen corresponding path program 1 times [2023-12-19 04:04:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:31,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076628240] [2023-12-19 04:04:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:31,863 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 04:04:31,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:31,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076628240] [2023-12-19 04:04:31,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076628240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129108835] [2023-12-19 04:04:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:31,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:31,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:31,868 INFO L87 Difference]: Start difference. First operand 24120 states and 28953 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 04:04:35,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:35,005 INFO L93 Difference]: Finished difference Result 49026 states and 58707 transitions. [2023-12-19 04:04:35,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:35,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 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 222 [2023-12-19 04:04:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:35,063 INFO L225 Difference]: With dead ends: 49026 [2023-12-19 04:04:35,064 INFO L226 Difference]: Without dead ends: 24907 [2023-12-19 04:04:35,089 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 04:04:35,090 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:35,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1210 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:04:35,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24907 states. [2023-12-19 04:04:35,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24907 to 24907. [2023-12-19 04:04:35,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24907 states, 24906 states have (on average 1.194290532401831) internal successors, (29745), 24906 states have internal predecessors, (29745), 0 states have call successors, (0), 0 states 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 04:04:35,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24907 states to 24907 states and 29745 transitions. [2023-12-19 04:04:35,447 INFO L78 Accepts]: Start accepts. Automaton has 24907 states and 29745 transitions. Word has length 222 [2023-12-19 04:04:35,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:35,448 INFO L495 AbstractCegarLoop]: Abstraction has 24907 states and 29745 transitions. [2023-12-19 04:04:35,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 2 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 04:04:35,448 INFO L276 IsEmpty]: Start isEmpty. Operand 24907 states and 29745 transitions. [2023-12-19 04:04:35,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2023-12-19 04:04:35,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:35,451 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:04:35,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-19 04:04:35,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:35,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:35,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1855870476, now seen corresponding path program 1 times [2023-12-19 04:04:35,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:35,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121706926] [2023-12-19 04:04:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:35,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:35,629 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:04:35,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:35,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121706926] [2023-12-19 04:04:35,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121706926] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:35,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:35,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:35,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394012260] [2023-12-19 04:04:35,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:35,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:35,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:35,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:35,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:35,632 INFO L87 Difference]: Start difference. First operand 24907 states and 29745 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 04:04:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:39,194 INFO L93 Difference]: Finished difference Result 61633 states and 75006 transitions. [2023-12-19 04:04:39,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:39,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 229 [2023-12-19 04:04:39,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:39,260 INFO L225 Difference]: With dead ends: 61633 [2023-12-19 04:04:39,260 INFO L226 Difference]: Without dead ends: 37514 [2023-12-19 04:04:39,294 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 04:04:39,295 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 859 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2391 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:39,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 944 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2391 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 04:04:39,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37514 states. [2023-12-19 04:04:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37514 to 35929. [2023-12-19 04:04:39,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35929 states, 35928 states have (on average 1.1822812291249165) internal successors, (42477), 35928 states have internal predecessors, (42477), 0 states have call successors, (0), 0 states 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 04:04:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35929 states to 35929 states and 42477 transitions. [2023-12-19 04:04:39,931 INFO L78 Accepts]: Start accepts. Automaton has 35929 states and 42477 transitions. Word has length 229 [2023-12-19 04:04:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:39,932 INFO L495 AbstractCegarLoop]: Abstraction has 35929 states and 42477 transitions. [2023-12-19 04:04:39,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 04:04:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 35929 states and 42477 transitions. [2023-12-19 04:04:39,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-12-19 04:04:39,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:39,936 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:04:39,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-19 04:04:39,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:39,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:39,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1846451801, now seen corresponding path program 1 times [2023-12-19 04:04:39,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:39,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832364005] [2023-12-19 04:04:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:39,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-19 04:04:40,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:40,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832364005] [2023-12-19 04:04:40,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832364005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:40,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:40,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:40,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179538332] [2023-12-19 04:04:40,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:40,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:40,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:40,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:40,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:40,094 INFO L87 Difference]: Start difference. First operand 35929 states and 42477 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 04:04:43,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:43,147 INFO L93 Difference]: Finished difference Result 70919 states and 83954 transitions. [2023-12-19 04:04:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:43,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 244 [2023-12-19 04:04:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:43,200 INFO L225 Difference]: With dead ends: 70919 [2023-12-19 04:04:43,200 INFO L226 Difference]: Without dead ends: 35778 [2023-12-19 04:04:43,235 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 04:04:43,238 INFO L413 NwaCegarLoop]: 1502 mSDtfsCounter, 1036 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:43,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1638 Invalid, 2953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:04:43,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35778 states. [2023-12-19 04:04:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35778 to 34200. [2023-12-19 04:04:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34200 states, 34199 states have (on average 1.129594432585748) internal successors, (38631), 34199 states have internal predecessors, (38631), 0 states have call successors, (0), 0 states 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 04:04:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34200 states to 34200 states and 38631 transitions. [2023-12-19 04:04:43,913 INFO L78 Accepts]: Start accepts. Automaton has 34200 states and 38631 transitions. Word has length 244 [2023-12-19 04:04:43,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:43,914 INFO L495 AbstractCegarLoop]: Abstraction has 34200 states and 38631 transitions. [2023-12-19 04:04:43,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 04:04:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 34200 states and 38631 transitions. [2023-12-19 04:04:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2023-12-19 04:04:43,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:43,920 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:04:43,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-19 04:04:43,921 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:43,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash 849660681, now seen corresponding path program 1 times [2023-12-19 04:04:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:43,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216568583] [2023-12-19 04:04:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:43,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:04:44,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:44,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216568583] [2023-12-19 04:04:44,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216568583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:44,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:44,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:44,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668687885] [2023-12-19 04:04:44,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:44,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:44,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:44,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:44,180 INFO L87 Difference]: Start difference. First operand 34200 states and 38631 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 04:04:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:48,200 INFO L93 Difference]: Finished difference Result 80212 states and 91538 transitions. [2023-12-19 04:04:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:04:48,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 318 [2023-12-19 04:04:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:48,260 INFO L225 Difference]: With dead ends: 80212 [2023-12-19 04:04:48,260 INFO L226 Difference]: Without dead ends: 46800 [2023-12-19 04:04:48,280 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 04:04:48,281 INFO L413 NwaCegarLoop]: 1774 mSDtfsCounter, 837 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 3252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:48,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1915 Invalid, 3252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-12-19 04:04:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46800 states. [2023-12-19 04:04:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46800 to 45220. [2023-12-19 04:04:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45220 states, 45219 states have (on average 1.1134036577544837) internal successors, (50347), 45219 states have internal predecessors, (50347), 0 states have call successors, (0), 0 states 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 04:04:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45220 states to 45220 states and 50347 transitions. [2023-12-19 04:04:48,770 INFO L78 Accepts]: Start accepts. Automaton has 45220 states and 50347 transitions. Word has length 318 [2023-12-19 04:04:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:04:48,771 INFO L495 AbstractCegarLoop]: Abstraction has 45220 states and 50347 transitions. [2023-12-19 04:04:48,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 04:04:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 45220 states and 50347 transitions. [2023-12-19 04:04:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-19 04:04:48,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:48,778 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:04:48,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-19 04:04:48,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:48,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:48,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1887415415, now seen corresponding path program 1 times [2023-12-19 04:04:48,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:48,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181404094] [2023-12-19 04:04:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:04:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:04:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 04:04:49,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:49,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181404094] [2023-12-19 04:04:49,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181404094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:49,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:49,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:04:49,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606542162] [2023-12-19 04:04:49,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:49,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:04:49,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:49,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:04:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:04:49,262 INFO L87 Difference]: Start difference. First operand 45220 states and 50347 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 04:04:56,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:04:56,127 INFO L93 Difference]: Finished difference Result 132348 states and 147650 transitions. [2023-12-19 04:04:56,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:04:56,127 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 327 [2023-12-19 04:04:56,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:04:56,249 INFO L225 Difference]: With dead ends: 132348 [2023-12-19 04:04:56,249 INFO L226 Difference]: Without dead ends: 87916 [2023-12-19 04:04:56,277 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 04:04:56,277 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1705 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 6628 mSolverCounterSat, 1039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 7667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1039 IncrementalHoareTripleChecker+Valid, 6628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:04:56,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1705 Valid, 798 Invalid, 7667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1039 Valid, 6628 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-19 04:04:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87916 states. [2023-12-19 04:04:57,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87916 to 85434. [2023-12-19 04:04:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85434 states, 85433 states have (on average 1.1051467231631804) internal successors, (94416), 85433 states have internal predecessors, (94416), 0 states have call successors, (0), 0 states 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 L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85434 states to 85434 states and 94416 transitions. [2023-12-19 04:04:57,476 INFO L78 Accepts]: Start accepts. Automaton has 85434 states and 94416 transitions. Word has length 327 [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 85434 states and 94416 transitions. [2023-12-19 04:04:57,477 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 04:04:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 85434 states and 94416 transitions. [2023-12-19 04:04:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2023-12-19 04:04:57,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:04:57,481 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:04:57,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-19 04:04:57,482 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:04:57,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:04:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1415284524, now seen corresponding path program 1 times [2023-12-19 04:04:57,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:04:57,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144216293] [2023-12-19 04:04:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:04:57,483 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 04:04:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-19 04:04:58,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:04:58,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144216293] [2023-12-19 04:04:58,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144216293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:04:58,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:04:58,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:04:58,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170487259] [2023-12-19 04:04:58,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:04:58,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:04:58,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:04:58,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:04:58,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:04:58,070 INFO L87 Difference]: Start difference. First operand 85434 states and 94416 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 04:05:01,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:01,830 INFO L93 Difference]: Finished difference Result 186630 states and 205696 transitions. [2023-12-19 04:05:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:01,830 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 327 [2023-12-19 04:05:01,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:02,005 INFO L225 Difference]: With dead ends: 186630 [2023-12-19 04:05:02,005 INFO L226 Difference]: Without dead ends: 101197 [2023-12-19 04:05:02,065 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 04:05:02,065 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 728 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2689 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:02,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1172 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2689 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:05:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101197 states. [2023-12-19 04:05:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101197 to 99612. [2023-12-19 04:05:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99612 states, 99611 states have (on average 1.095481422734437) internal successors, (109122), 99611 states have internal predecessors, (109122), 0 states have call successors, (0), 0 states 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 04:05:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99612 states to 99612 states and 109122 transitions. [2023-12-19 04:05:03,585 INFO L78 Accepts]: Start accepts. Automaton has 99612 states and 109122 transitions. Word has length 327 [2023-12-19 04:05:03,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:03,586 INFO L495 AbstractCegarLoop]: Abstraction has 99612 states and 109122 transitions. [2023-12-19 04:05:03,586 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 04:05:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 99612 states and 109122 transitions. [2023-12-19 04:05:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-12-19 04:05:03,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:03,592 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:05:03,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-19 04:05:03,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:03,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:03,593 INFO L85 PathProgramCache]: Analyzing trace with hash 33606466, now seen corresponding path program 1 times [2023-12-19 04:05:03,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:03,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397668236] [2023-12-19 04:05:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:03,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 226 proven. 113 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 04:05:05,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:05,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397668236] [2023-12-19 04:05:05,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397668236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:05:05,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385167036] [2023-12-19 04:05:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:05,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:05:05,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:05:05,615 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 04:05:05,700 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 04:05:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:05,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:05:05,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:05:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-12-19 04:05:06,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:05:06,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385167036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:06,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:05:06,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:05:06,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64559898] [2023-12-19 04:05:06,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:06,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:06,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:06,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:06,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:05:06,006 INFO L87 Difference]: Start difference. First operand 99612 states and 109122 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 04:05:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:09,494 INFO L93 Difference]: Finished difference Result 198434 states and 217450 transitions. [2023-12-19 04:05:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:09,495 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 356 [2023-12-19 04:05:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:09,639 INFO L225 Difference]: With dead ends: 198434 [2023-12-19 04:05:09,639 INFO L226 Difference]: Without dead ends: 99610 [2023-12-19 04:05:09,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:05:09,686 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 1112 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2462 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:09,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1415 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2462 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-19 04:05:09,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99610 states. [2023-12-19 04:05:10,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99610 to 99609. [2023-12-19 04:05:11,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99609 states, 99608 states have (on average 1.0761786201911494) internal successors, (107196), 99608 states have internal predecessors, (107196), 0 states have call successors, (0), 0 states 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 04:05:11,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99609 states to 99609 states and 107196 transitions. [2023-12-19 04:05:11,175 INFO L78 Accepts]: Start accepts. Automaton has 99609 states and 107196 transitions. Word has length 356 [2023-12-19 04:05:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:11,176 INFO L495 AbstractCegarLoop]: Abstraction has 99609 states and 107196 transitions. [2023-12-19 04:05:11,176 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 04:05:11,177 INFO L276 IsEmpty]: Start isEmpty. Operand 99609 states and 107196 transitions. [2023-12-19 04:05:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-12-19 04:05:11,186 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:11,186 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 04:05:11,193 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 04:05:11,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-19 04:05:11,390 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:11,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash -63115780, now seen corresponding path program 1 times [2023-12-19 04:05:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:11,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814821726] [2023-12-19 04:05:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:05:11,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:11,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814821726] [2023-12-19 04:05:11,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814821726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:11,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:11,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:11,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786964069] [2023-12-19 04:05:11,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:11,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:11,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:11,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:11,916 INFO L87 Difference]: Start difference. First operand 99609 states and 107196 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 04:05:15,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:15,972 INFO L93 Difference]: Finished difference Result 223628 states and 242180 transitions. [2023-12-19 04:05:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:15,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 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 424 [2023-12-19 04:05:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:16,175 INFO L225 Difference]: With dead ends: 223628 [2023-12-19 04:05:16,175 INFO L226 Difference]: Without dead ends: 123233 [2023-12-19 04:05:16,241 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 04:05:16,241 INFO L413 NwaCegarLoop]: 1720 mSDtfsCounter, 791 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 3225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:16,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1863 Invalid, 3225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 04:05:16,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123233 states. [2023-12-19 04:05:17,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123233 to 122427. [2023-12-19 04:05:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122427 states, 122426 states have (on average 1.065794847499714) internal successors, (130481), 122426 states have internal predecessors, (130481), 0 states have call successors, (0), 0 states 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 04:05:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122427 states to 122427 states and 130481 transitions. [2023-12-19 04:05:18,089 INFO L78 Accepts]: Start accepts. Automaton has 122427 states and 130481 transitions. Word has length 424 [2023-12-19 04:05:18,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:18,089 INFO L495 AbstractCegarLoop]: Abstraction has 122427 states and 130481 transitions. [2023-12-19 04:05:18,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 04:05:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 122427 states and 130481 transitions. [2023-12-19 04:05:18,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-19 04:05:18,099 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:18,100 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:05:18,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-19 04:05:18,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:18,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:18,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1660368290, now seen corresponding path program 1 times [2023-12-19 04:05:18,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:18,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073400290] [2023-12-19 04:05:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:18,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2023-12-19 04:05:18,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:18,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073400290] [2023-12-19 04:05:18,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073400290] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:18,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:18,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:18,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939566794] [2023-12-19 04:05:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:18,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:18,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:18,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:18,524 INFO L87 Difference]: Start difference. First operand 122427 states and 130481 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 04:05:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:22,127 INFO L93 Difference]: Finished difference Result 244856 states and 260967 transitions. [2023-12-19 04:05:22,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:22,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 433 [2023-12-19 04:05:22,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:22,354 INFO L225 Difference]: With dead ends: 244856 [2023-12-19 04:05:22,354 INFO L226 Difference]: Without dead ends: 123217 [2023-12-19 04:05:22,427 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 04:05:22,428 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 965 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 3065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:22,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 701 Invalid, 3065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:05:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123217 states. [2023-12-19 04:05:23,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123217 to 120050. [2023-12-19 04:05:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120050 states, 120049 states have (on average 1.0577930678306358) internal successors, (126987), 120049 states have internal predecessors, (126987), 0 states have call successors, (0), 0 states 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 04:05:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120050 states to 120050 states and 126987 transitions. [2023-12-19 04:05:24,457 INFO L78 Accepts]: Start accepts. Automaton has 120050 states and 126987 transitions. Word has length 433 [2023-12-19 04:05:24,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:24,457 INFO L495 AbstractCegarLoop]: Abstraction has 120050 states and 126987 transitions. [2023-12-19 04:05:24,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 04:05:24,458 INFO L276 IsEmpty]: Start isEmpty. Operand 120050 states and 126987 transitions. [2023-12-19 04:05:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 461 [2023-12-19 04:05:24,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:24,484 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:05:24,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-19 04:05:24,484 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:24,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash 664225737, now seen corresponding path program 1 times [2023-12-19 04:05:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:24,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110781761] [2023-12-19 04:05:24,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:24,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 295 proven. 113 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 04:05:26,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:26,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110781761] [2023-12-19 04:05:26,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110781761] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:05:26,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57964751] [2023-12-19 04:05:26,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:26,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:05:26,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:05:26,141 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 04:05:26,169 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 04:05:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:26,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-19 04:05:26,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:05:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-12-19 04:05:26,523 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:05:26,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57964751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:26,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:05:26,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-12-19 04:05:26,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848090876] [2023-12-19 04:05:26,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:26,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:26,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:26,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:05:26,526 INFO L87 Difference]: Start difference. First operand 120050 states and 126987 transitions. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 04:05:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:30,090 INFO L93 Difference]: Finished difference Result 234558 states and 249443 transitions. [2023-12-19 04:05:30,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:30,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 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 460 [2023-12-19 04:05:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:30,273 INFO L225 Difference]: With dead ends: 234558 [2023-12-19 04:05:30,273 INFO L226 Difference]: Without dead ends: 131043 [2023-12-19 04:05:30,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 459 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 04:05:30,309 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1125 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2255 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 2255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:30,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 364 Invalid, 3051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 2255 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:05:30,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131043 states. [2023-12-19 04:05:31,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131043 to 131043. [2023-12-19 04:05:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131043 states, 131042 states have (on average 1.055707330474199) internal successors, (138342), 131042 states have internal predecessors, (138342), 0 states have call successors, (0), 0 states 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 04:05:32,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131043 states to 131043 states and 138342 transitions. [2023-12-19 04:05:32,132 INFO L78 Accepts]: Start accepts. Automaton has 131043 states and 138342 transitions. Word has length 460 [2023-12-19 04:05:32,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:32,132 INFO L495 AbstractCegarLoop]: Abstraction has 131043 states and 138342 transitions. [2023-12-19 04:05:32,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 04:05:32,133 INFO L276 IsEmpty]: Start isEmpty. Operand 131043 states and 138342 transitions. [2023-12-19 04:05:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-12-19 04:05:32,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:32,141 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 04:05:32,149 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 04:05:32,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:05:32,349 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:32,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash 833706808, now seen corresponding path program 1 times [2023-12-19 04:05:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:32,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164382173] [2023-12-19 04:05:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:32,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:33,777 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 295 proven. 113 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-19 04:05:33,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:33,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164382173] [2023-12-19 04:05:33,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164382173] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-19 04:05:33,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968164084] [2023-12-19 04:05:33,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:33,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-19 04:05:33,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-19 04:05:33,779 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 04:05:33,781 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 04:05:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:33,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-19 04:05:33,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-19 04:05:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-12-19 04:05:34,546 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-19 04:05:34,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968164084] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:34,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-19 04:05:34,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-12-19 04:05:34,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568002142] [2023-12-19 04:05:34,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:34,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:34,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:34,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:34,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:05:34,548 INFO L87 Difference]: Start difference. First operand 131043 states and 138342 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 04:05:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:37,874 INFO L93 Difference]: Finished difference Result 250287 states and 264689 transitions. [2023-12-19 04:05:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:37,875 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 476 [2023-12-19 04:05:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:38,060 INFO L225 Difference]: With dead ends: 250287 [2023-12-19 04:05:38,060 INFO L226 Difference]: Without dead ends: 134202 [2023-12-19 04:05:38,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-19 04:05:38,136 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 2536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:38,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1116 Invalid, 2536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-19 04:05:38,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134202 states. [2023-12-19 04:05:39,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134202 to 134192. [2023-12-19 04:05:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134192 states, 134191 states have (on average 1.050174750914741) internal successors, (140924), 134191 states have internal predecessors, (140924), 0 states have call successors, (0), 0 states 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 04:05:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134192 states to 134192 states and 140924 transitions. [2023-12-19 04:05:39,960 INFO L78 Accepts]: Start accepts. Automaton has 134192 states and 140924 transitions. Word has length 476 [2023-12-19 04:05:39,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:39,960 INFO L495 AbstractCegarLoop]: Abstraction has 134192 states and 140924 transitions. [2023-12-19 04:05:39,960 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 04:05:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 134192 states and 140924 transitions. [2023-12-19 04:05:39,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2023-12-19 04:05:39,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:39,971 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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 04:05:39,981 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 04:05:40,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-19 04:05:40,178 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:40,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:40,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1222407008, now seen corresponding path program 1 times [2023-12-19 04:05:40,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:40,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034622521] [2023-12-19 04:05:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:40,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2023-12-19 04:05:40,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:40,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034622521] [2023-12-19 04:05:40,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034622521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:40,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:40,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-19 04:05:40,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46926206] [2023-12-19 04:05:40,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:40,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:40,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:40,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:40,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:40,444 INFO L87 Difference]: Start difference. First operand 134192 states and 140924 transitions. Second operand has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 04:05:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:43,091 INFO L93 Difference]: Finished difference Result 251046 states and 264045 transitions. [2023-12-19 04:05:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:43,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 515 [2023-12-19 04:05:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:43,307 INFO L225 Difference]: With dead ends: 251046 [2023-12-19 04:05:43,307 INFO L226 Difference]: Without dead ends: 133389 [2023-12-19 04:05:43,389 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 04:05:43,390 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1554 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:43,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 272 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-19 04:05:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133389 states. [2023-12-19 04:05:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133389 to 133388. [2023-12-19 04:05:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133388 states, 133387 states have (on average 1.0491352230727133) internal successors, (139941), 133387 states have internal predecessors, (139941), 0 states have call successors, (0), 0 states 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 04:05:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133388 states to 133388 states and 139941 transitions. [2023-12-19 04:05:45,107 INFO L78 Accepts]: Start accepts. Automaton has 133388 states and 139941 transitions. Word has length 515 [2023-12-19 04:05:45,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:45,107 INFO L495 AbstractCegarLoop]: Abstraction has 133388 states and 139941 transitions. [2023-12-19 04:05:45,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.0) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states 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 04:05:45,107 INFO L276 IsEmpty]: Start isEmpty. Operand 133388 states and 139941 transitions. [2023-12-19 04:05:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-12-19 04:05:45,404 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:45,404 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 04:05:45,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-19 04:05:45,405 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:45,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1318398389, now seen corresponding path program 1 times [2023-12-19 04:05:45,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:45,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400808318] [2023-12-19 04:05:45,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:45,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-19 04:05:46,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:46,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400808318] [2023-12-19 04:05:46,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400808318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:46,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:46,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:46,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561428721] [2023-12-19 04:05:46,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:46,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:46,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:46,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:46,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:46,005 INFO L87 Difference]: Start difference. First operand 133388 states and 139941 transitions. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 04:05:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:49,197 INFO L93 Difference]: Finished difference Result 251032 states and 263872 transitions. [2023-12-19 04:05:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:49,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 529 [2023-12-19 04:05:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:49,394 INFO L225 Difference]: With dead ends: 251032 [2023-12-19 04:05:49,394 INFO L226 Difference]: Without dead ends: 134179 [2023-12-19 04:05:49,460 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 04:05:49,461 INFO L413 NwaCegarLoop]: 1698 mSDtfsCounter, 609 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:49,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1821 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-19 04:05:49,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134179 states. [2023-12-19 04:05:51,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134179 to 134175. [2023-12-19 04:05:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134175 states, 134174 states have (on average 1.0490482507788395) internal successors, (140755), 134174 states have internal predecessors, (140755), 0 states have call successors, (0), 0 states 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 04:05:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134175 states to 134175 states and 140755 transitions. [2023-12-19 04:05:51,437 INFO L78 Accepts]: Start accepts. Automaton has 134175 states and 140755 transitions. Word has length 529 [2023-12-19 04:05:51,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:51,438 INFO L495 AbstractCegarLoop]: Abstraction has 134175 states and 140755 transitions. [2023-12-19 04:05:51,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 04:05:51,438 INFO L276 IsEmpty]: Start isEmpty. Operand 134175 states and 140755 transitions. [2023-12-19 04:05:51,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2023-12-19 04:05:51,451 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:51,451 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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 04:05:51,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-19 04:05:51,451 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:51,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1194029439, now seen corresponding path program 1 times [2023-12-19 04:05:51,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:51,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675781114] [2023-12-19 04:05:51,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:51,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 639 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-12-19 04:05:52,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:52,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675781114] [2023-12-19 04:05:52,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675781114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:52,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:52,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:52,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874366974] [2023-12-19 04:05:52,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:52,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:52,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:52,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:52,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:52,022 INFO L87 Difference]: Start difference. First operand 134175 states and 140755 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 04:05:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:05:56,132 INFO L93 Difference]: Finished difference Result 299864 states and 315728 transitions. [2023-12-19 04:05:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:05:56,133 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 560 [2023-12-19 04:05:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:05:56,367 INFO L225 Difference]: With dead ends: 299864 [2023-12-19 04:05:56,367 INFO L226 Difference]: Without dead ends: 182224 [2023-12-19 04:05:56,412 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 04:05:56,415 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 951 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2398 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 2398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-19 04:05:56,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 653 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [846 Valid, 2398 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-19 04:05:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182224 states. [2023-12-19 04:05:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182224 to 182217. [2023-12-19 04:05:58,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182217 states, 182216 states have (on average 1.0474930851297362) internal successors, (190870), 182216 states have internal predecessors, (190870), 0 states have call successors, (0), 0 states 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 04:05:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182217 states to 182217 states and 190870 transitions. [2023-12-19 04:05:59,370 INFO L78 Accepts]: Start accepts. Automaton has 182217 states and 190870 transitions. Word has length 560 [2023-12-19 04:05:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:05:59,370 INFO L495 AbstractCegarLoop]: Abstraction has 182217 states and 190870 transitions. [2023-12-19 04:05:59,370 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 04:05:59,371 INFO L276 IsEmpty]: Start isEmpty. Operand 182217 states and 190870 transitions. [2023-12-19 04:05:59,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-12-19 04:05:59,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:05:59,392 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 04:05:59,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-19 04:05:59,392 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:05:59,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:05:59,395 INFO L85 PathProgramCache]: Analyzing trace with hash 384631298, now seen corresponding path program 1 times [2023-12-19 04:05:59,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:05:59,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214234401] [2023-12-19 04:05:59,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:05:59,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:05:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:05:59,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 806 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-12-19 04:05:59,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:05:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214234401] [2023-12-19 04:05:59,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214234401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:05:59,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:05:59,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:05:59,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135949448] [2023-12-19 04:05:59,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:05:59,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:05:59,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:05:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:05:59,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:05:59,759 INFO L87 Difference]: Start difference. First operand 182217 states and 190870 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 04:06:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:03,807 INFO L93 Difference]: Finished difference Result 365225 states and 382541 transitions. [2023-12-19 04:06:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:03,807 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 607 [2023-12-19 04:06:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:04,081 INFO L225 Difference]: With dead ends: 365225 [2023-12-19 04:06:04,081 INFO L226 Difference]: Without dead ends: 183796 [2023-12-19 04:06:04,185 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 04:06:04,186 INFO L413 NwaCegarLoop]: 1321 mSDtfsCounter, 914 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:04,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1394 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-19 04:06:04,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183796 states. [2023-12-19 04:06:06,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183796 to 182211. [2023-12-19 04:06:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182211 states, 182210 states have (on average 1.0399538993469075) internal successors, (189490), 182210 states have internal predecessors, (189490), 0 states have call successors, (0), 0 states 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 04:06:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182211 states to 182211 states and 189490 transitions. [2023-12-19 04:06:07,063 INFO L78 Accepts]: Start accepts. Automaton has 182211 states and 189490 transitions. Word has length 607 [2023-12-19 04:06:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:07,063 INFO L495 AbstractCegarLoop]: Abstraction has 182211 states and 189490 transitions. [2023-12-19 04:06:07,063 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 04:06:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 182211 states and 189490 transitions. [2023-12-19 04:06:07,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2023-12-19 04:06:07,075 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:07,075 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:07,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-19 04:06:07,076 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:07,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash 938562730, now seen corresponding path program 1 times [2023-12-19 04:06:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:07,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42503736] [2023-12-19 04:06:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 815 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-19 04:06:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42503736] [2023-12-19 04:06:07,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42503736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:07,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:07,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038528028] [2023-12-19 04:06:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:07,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:07,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:07,765 INFO L87 Difference]: Start difference. First operand 182211 states and 189490 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 04:06:11,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:11,581 INFO L93 Difference]: Finished difference Result 349479 states and 363805 transitions. [2023-12-19 04:06:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:11,582 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 609 [2023-12-19 04:06:11,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:11,914 INFO L225 Difference]: With dead ends: 349479 [2023-12-19 04:06:11,914 INFO L226 Difference]: Without dead ends: 182224 [2023-12-19 04:06:12,030 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 04:06:12,036 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 771 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 2411 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:12,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1704 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2411 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:06:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182224 states. [2023-12-19 04:06:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182224 to 182207. [2023-12-19 04:06:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182207 states, 182206 states have (on average 1.0370295160422818) internal successors, (188953), 182206 states have internal predecessors, (188953), 0 states have call successors, (0), 0 states 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 04:06:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182207 states to 182207 states and 188953 transitions. [2023-12-19 04:06:14,557 INFO L78 Accepts]: Start accepts. Automaton has 182207 states and 188953 transitions. Word has length 609 [2023-12-19 04:06:14,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:14,557 INFO L495 AbstractCegarLoop]: Abstraction has 182207 states and 188953 transitions. [2023-12-19 04:06:14,557 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 04:06:14,558 INFO L276 IsEmpty]: Start isEmpty. Operand 182207 states and 188953 transitions. [2023-12-19 04:06:14,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-19 04:06:14,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:14,569 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 04:06:14,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-19 04:06:14,570 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:14,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:14,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1817973725, now seen corresponding path program 1 times [2023-12-19 04:06:14,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:14,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731452056] [2023-12-19 04:06:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:14,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:14,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2023-12-19 04:06:15,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:15,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731452056] [2023-12-19 04:06:15,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731452056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:15,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:15,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:15,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73958835] [2023-12-19 04:06:15,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:15,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:15,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:15,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:15,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:15,094 INFO L87 Difference]: Start difference. First operand 182207 states and 188953 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 04:06:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:18,977 INFO L93 Difference]: Finished difference Result 365975 states and 379671 transitions. [2023-12-19 04:06:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 623 [2023-12-19 04:06:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:19,302 INFO L225 Difference]: With dead ends: 365975 [2023-12-19 04:06:19,302 INFO L226 Difference]: Without dead ends: 191636 [2023-12-19 04:06:19,430 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 04:06:19,431 INFO L413 NwaCegarLoop]: 1612 mSDtfsCounter, 666 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:19,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1732 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:06:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191636 states. [2023-12-19 04:06:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191636 to 180613. [2023-12-19 04:06:21,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180613 states, 180612 states have (on average 1.0349090868823776) internal successors, (186917), 180612 states have internal predecessors, (186917), 0 states have call successors, (0), 0 states 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 04:06:21,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180613 states to 180613 states and 186917 transitions. [2023-12-19 04:06:21,999 INFO L78 Accepts]: Start accepts. Automaton has 180613 states and 186917 transitions. Word has length 623 [2023-12-19 04:06:22,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:22,000 INFO L495 AbstractCegarLoop]: Abstraction has 180613 states and 186917 transitions. [2023-12-19 04:06:22,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 04:06:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 180613 states and 186917 transitions. [2023-12-19 04:06:22,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 649 [2023-12-19 04:06:22,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:22,015 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 04:06:22,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-19 04:06:22,016 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:22,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:22,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2119065215, now seen corresponding path program 1 times [2023-12-19 04:06:22,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:22,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486294789] [2023-12-19 04:06:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:22,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1077 backedges. 776 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-12-19 04:06:22,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:22,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486294789] [2023-12-19 04:06:22,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486294789] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:22,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:22,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:22,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499727213] [2023-12-19 04:06:22,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:22,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:22,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:22,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:22,892 INFO L87 Difference]: Start difference. First operand 180613 states and 186917 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 04:06:26,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:26,525 INFO L93 Difference]: Finished difference Result 376201 states and 389366 transitions. [2023-12-19 04:06:26,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:26,526 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 648 [2023-12-19 04:06:26,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:26,835 INFO L225 Difference]: With dead ends: 376201 [2023-12-19 04:06:26,835 INFO L226 Difference]: Without dead ends: 196376 [2023-12-19 04:06:26,959 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 04:06:26,961 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 730 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:26,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 931 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-19 04:06:27,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196376 states. [2023-12-19 04:06:29,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196376 to 193997. [2023-12-19 04:06:29,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193997 states, 193996 states have (on average 1.0344955566094147) internal successors, (200688), 193996 states have internal predecessors, (200688), 0 states have call successors, (0), 0 states 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 04:06:30,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193997 states to 193997 states and 200688 transitions. [2023-12-19 04:06:30,048 INFO L78 Accepts]: Start accepts. Automaton has 193997 states and 200688 transitions. Word has length 648 [2023-12-19 04:06:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:30,049 INFO L495 AbstractCegarLoop]: Abstraction has 193997 states and 200688 transitions. [2023-12-19 04:06:30,049 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 04:06:30,049 INFO L276 IsEmpty]: Start isEmpty. Operand 193997 states and 200688 transitions. [2023-12-19 04:06:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 687 [2023-12-19 04:06:30,088 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:30,088 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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 04:06:30,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-19 04:06:30,090 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:30,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:30,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2045504548, now seen corresponding path program 1 times [2023-12-19 04:06:30,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:30,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522954888] [2023-12-19 04:06:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1032 backedges. 810 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-12-19 04:06:30,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:30,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522954888] [2023-12-19 04:06:30,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522954888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:30,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:30,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-19 04:06:30,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544399144] [2023-12-19 04:06:30,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:30,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-19 04:06:30,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-19 04:06:30,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-19 04:06:30,736 INFO L87 Difference]: Start difference. First operand 193997 states and 200688 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 04:06:37,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:37,968 INFO L93 Difference]: Finished difference Result 487346 states and 504679 transitions. [2023-12-19 04:06:37,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-19 04:06:37,969 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 686 [2023-12-19 04:06:37,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:38,520 INFO L225 Difference]: With dead ends: 487346 [2023-12-19 04:06:38,520 INFO L226 Difference]: Without dead ends: 294137 [2023-12-19 04:06:38,655 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 04:06:38,655 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 1677 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 5990 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 6914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 5990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:38,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 856 Invalid, 6914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 5990 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-12-19 04:06:38,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294137 states. [2023-12-19 04:06:41,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294137 to 242036. [2023-12-19 04:06:41,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242036 states, 242035 states have (on average 1.0332389943603197) internal successors, (250080), 242035 states have internal predecessors, (250080), 0 states have call successors, (0), 0 states 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 04:06:42,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242036 states to 242036 states and 250080 transitions. [2023-12-19 04:06:42,716 INFO L78 Accepts]: Start accepts. Automaton has 242036 states and 250080 transitions. Word has length 686 [2023-12-19 04:06:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:42,716 INFO L495 AbstractCegarLoop]: Abstraction has 242036 states and 250080 transitions. [2023-12-19 04:06:42,716 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 04:06:42,716 INFO L276 IsEmpty]: Start isEmpty. Operand 242036 states and 250080 transitions. [2023-12-19 04:06:42,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 872 [2023-12-19 04:06:42,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:42,786 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 04:06:42,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-19 04:06:42,787 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:42,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:42,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1868771354, now seen corresponding path program 1 times [2023-12-19 04:06:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:42,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987323654] [2023-12-19 04:06:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1018 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-12-19 04:06:43,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:43,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987323654] [2023-12-19 04:06:43,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987323654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:43,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:43,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:43,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421712081] [2023-12-19 04:06:43,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:43,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:43,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:43,456 INFO L87 Difference]: Start difference. First operand 242036 states and 250080 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 04:06:48,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-19 04:06:48,072 INFO L93 Difference]: Finished difference Result 499082 states and 516308 transitions. [2023-12-19 04:06:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-19 04:06:48,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 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 871 [2023-12-19 04:06:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-19 04:06:48,525 INFO L225 Difference]: With dead ends: 499082 [2023-12-19 04:06:48,525 INFO L226 Difference]: Without dead ends: 273580 [2023-12-19 04:06:48,676 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 04:06:48,677 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 893 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-19 04:06:48,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 689 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-19 04:06:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273580 states. [2023-12-19 04:06:51,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273580 to 242011. [2023-12-19 04:06:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242011 states, 242010 states have (on average 1.0335316722449486) internal successors, (250125), 242010 states have internal predecessors, (250125), 0 states have call successors, (0), 0 states 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 04:06:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242011 states to 242011 states and 250125 transitions. [2023-12-19 04:06:52,911 INFO L78 Accepts]: Start accepts. Automaton has 242011 states and 250125 transitions. Word has length 871 [2023-12-19 04:06:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-19 04:06:52,911 INFO L495 AbstractCegarLoop]: Abstraction has 242011 states and 250125 transitions. [2023-12-19 04:06:52,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 04:06:52,912 INFO L276 IsEmpty]: Start isEmpty. Operand 242011 states and 250125 transitions. [2023-12-19 04:06:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 926 [2023-12-19 04:06:52,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-19 04:06:52,950 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-19 04:06:52,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-19 04:06:52,950 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-19 04:06:52,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-19 04:06:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1391377930, now seen corresponding path program 1 times [2023-12-19 04:06:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-19 04:06:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021599033] [2023-12-19 04:06:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-19 04:06:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-19 04:06:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-19 04:06:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1579 backedges. 173 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2023-12-19 04:06:53,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-19 04:06:53,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021599033] [2023-12-19 04:06:53,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021599033] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-19 04:06:53,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-19 04:06:53,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-19 04:06:53,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864022781] [2023-12-19 04:06:53,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-19 04:06:53,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-19 04:06:53,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-19 04:06:53,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-19 04:06:53,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-19 04:06:53,674 INFO L87 Difference]: Start difference. First operand 242011 states and 250125 transitions. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)