/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 23:04:58,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 23:04:58,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2023-12-25 23:04:58,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 23:04:58,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 23:04:58,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 23:04:58,410 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 23:04:58,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 23:04:58,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 23:04:58,413 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 23:04:58,413 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 23:04:58,414 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 23:04:58,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 23:04:58,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 23:04:58,415 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 23:04:58,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 23:04:58,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 23:04:58,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-25 23:04:58,416 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 23:04:58,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 23:04:58,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 23:04:58,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 23:04:58,417 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 23:04:58,417 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 23:04:58,418 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 23:04:58,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 23:04:58,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 23:04:58,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 23:04:58,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 23:04:58,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:04:58,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 23:04:58,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 23:04:58,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 23:04:58,420 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-25 23:04:58,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-25 23:04:58,420 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 23:04:58,420 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 23:04:58,420 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 23:04:58,420 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 23:04:58,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 23:04:58,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-25 23:04:58,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 23:04:58,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 23:04:58,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 23:04:58,626 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 23:04:58,626 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 23:04:58,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2023-12-25 23:04:59,511 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 23:04:59,692 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 23:04:59,692 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2023-12-25 23:04:59,698 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b837f7c96/83e7483fe08c4c22a3963131589425d5/FLAG17175f5f9 [2023-12-25 23:04:59,707 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b837f7c96/83e7483fe08c4c22a3963131589425d5 [2023-12-25 23:04:59,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 23:04:59,709 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 23:04:59,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 23:04:59,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 23:04:59,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 23:04:59,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:04:59,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726c093c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59, skipping insertion in model container [2023-12-25 23:04:59,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:04:59,752 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 23:04:59,871 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c[1259,1272] [2023-12-25 23:04:59,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:04:59,927 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 23:04:59,935 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_s1269b_p3.c[1259,1272] [2023-12-25 23:04:59,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 23:04:59,989 INFO L206 MainTranslator]: Completed translation [2023-12-25 23:04:59,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59 WrapperNode [2023-12-25 23:04:59,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 23:04:59,990 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 23:04:59,990 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 23:04:59,990 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 23:04:59,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,004 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,067 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 480 [2023-12-25 23:05:00,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 23:05:00,068 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 23:05:00,068 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 23:05:00,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 23:05:00,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,102 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]. [2023-12-25 23:05:00,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,121 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 23:05:00,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 23:05:00,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 23:05:00,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 23:05:00,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (1/1) ... [2023-12-25 23:05:00,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 23:05:00,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:05:00,155 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) [2023-12-25 23:05:00,175 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 [2023-12-25 23:05:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 23:05:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-25 23:05:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 23:05:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 23:05:00,286 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 23:05:00,287 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 23:05:00,760 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 23:05:00,790 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 23:05:00,790 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 23:05:00,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:05:00 BoogieIcfgContainer [2023-12-25 23:05:00,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 23:05:00,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 23:05:00,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 23:05:00,796 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 23:05:00,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 11:04:59" (1/3) ... [2023-12-25 23:05:00,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209f97dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:05:00, skipping insertion in model container [2023-12-25 23:05:00,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 11:04:59" (2/3) ... [2023-12-25 23:05:00,797 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@209f97dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 11:05:00, skipping insertion in model container [2023-12-25 23:05:00,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 11:05:00" (3/3) ... [2023-12-25 23:05:00,798 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_s1269b_p3.c [2023-12-25 23:05:00,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 23:05:00,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 23:05:00,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 23:05:00,852 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;@548027a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 23:05:00,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 23:05:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.6666666666666667) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-25 23:05:00,859 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:00,860 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] [2023-12-25 23:05:00,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:00,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash 884128027, now seen corresponding path program 1 times [2023-12-25 23:05:00,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:00,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967801075] [2023-12-25 23:05:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:00,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:01,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:01,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967801075] [2023-12-25 23:05:01,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967801075] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:01,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:01,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:05:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199242953] [2023-12-25 23:05:01,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:01,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:05:01,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:05:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:05:01,248 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.6666666666666667) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:01,301 INFO L93 Difference]: Finished difference Result 153 states and 251 transitions. [2023-12-25 23:05:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:05:01,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-25 23:05:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:01,311 INFO L225 Difference]: With dead ends: 153 [2023-12-25 23:05:01,311 INFO L226 Difference]: Without dead ends: 83 [2023-12-25 23:05:01,313 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 [2023-12-25 23:05:01,315 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:01,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 379 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:01,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-12-25 23:05:01,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-12-25 23:05:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.6219512195121952) internal successors, (133), 82 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 133 transitions. [2023-12-25 23:05:01,344 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 133 transitions. Word has length 22 [2023-12-25 23:05:01,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:01,344 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 133 transitions. [2023-12-25 23:05:01,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 133 transitions. [2023-12-25 23:05:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-25 23:05:01,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:01,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:01,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-25 23:05:01,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:01,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:01,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1639890117, now seen corresponding path program 1 times [2023-12-25 23:05:01,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:01,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428342514] [2023-12-25 23:05:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:01,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:01,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:01,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:01,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428342514] [2023-12-25 23:05:01,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428342514] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:01,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:01,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:05:01,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017839082] [2023-12-25 23:05:01,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:01,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-25 23:05:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-25 23:05:01,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:05:01,481 INFO L87 Difference]: Start difference. First operand 83 states and 133 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:01,515 INFO L93 Difference]: Finished difference Result 156 states and 249 transitions. [2023-12-25 23:05:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-25 23:05:01,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-12-25 23:05:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:01,518 INFO L225 Difference]: With dead ends: 156 [2023-12-25 23:05:01,519 INFO L226 Difference]: Without dead ends: 86 [2023-12-25 23:05:01,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-25 23:05:01,520 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:01,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 377 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:01,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-12-25 23:05:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2023-12-25 23:05:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.6071428571428572) internal successors, (135), 84 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2023-12-25 23:05:01,532 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 23 [2023-12-25 23:05:01,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:01,532 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2023-12-25 23:05:01,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2023-12-25 23:05:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-25 23:05:01,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:01,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:01,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-25 23:05:01,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:01,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:01,535 INFO L85 PathProgramCache]: Analyzing trace with hash -913446283, now seen corresponding path program 1 times [2023-12-25 23:05:01,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:01,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597148316] [2023-12-25 23:05:01,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:01,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:01,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:01,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597148316] [2023-12-25 23:05:01,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597148316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:01,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:01,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:05:01,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549844183] [2023-12-25 23:05:01,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:01,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:05:01,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:05:01,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:05:01,975 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:02,146 INFO L93 Difference]: Finished difference Result 302 states and 478 transitions. [2023-12-25 23:05:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:05:02,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-25 23:05:02,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:02,149 INFO L225 Difference]: With dead ends: 302 [2023-12-25 23:05:02,149 INFO L226 Difference]: Without dead ends: 230 [2023-12-25 23:05:02,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:05:02,152 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 850 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:02,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 615 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:02,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-12-25 23:05:02,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 94. [2023-12-25 23:05:02,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.5806451612903225) internal successors, (147), 93 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:02,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 147 transitions. [2023-12-25 23:05:02,174 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 147 transitions. Word has length 24 [2023-12-25 23:05:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:02,174 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 147 transitions. [2023-12-25 23:05:02,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 147 transitions. [2023-12-25 23:05:02,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-25 23:05:02,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:02,175 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] [2023-12-25 23:05:02,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-25 23:05:02,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:02,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:02,175 INFO L85 PathProgramCache]: Analyzing trace with hash -947124117, now seen corresponding path program 1 times [2023-12-25 23:05:02,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:02,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20657543] [2023-12-25 23:05:02,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:02,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:02,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:02,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20657543] [2023-12-25 23:05:02,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20657543] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:02,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:02,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 23:05:02,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751347365] [2023-12-25 23:05:02,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:02,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:05:02,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:02,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:05:02,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:05:02,546 INFO L87 Difference]: Start difference. First operand 94 states and 147 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:02,903 INFO L93 Difference]: Finished difference Result 414 states and 658 transitions. [2023-12-25 23:05:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:05:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-25 23:05:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:02,905 INFO L225 Difference]: With dead ends: 414 [2023-12-25 23:05:02,905 INFO L226 Difference]: Without dead ends: 342 [2023-12-25 23:05:02,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-12-25 23:05:02,911 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 1489 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:02,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1006 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-12-25 23:05:02,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 96. [2023-12-25 23:05:02,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.568421052631579) internal successors, (149), 95 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 149 transitions. [2023-12-25 23:05:02,919 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 149 transitions. Word has length 25 [2023-12-25 23:05:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:02,919 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 149 transitions. [2023-12-25 23:05:02,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 149 transitions. [2023-12-25 23:05:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-25 23:05:02,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:02,920 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] [2023-12-25 23:05:02,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-25 23:05:02,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:02,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:02,921 INFO L85 PathProgramCache]: Analyzing trace with hash -672871279, now seen corresponding path program 1 times [2023-12-25 23:05:02,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:02,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899108749] [2023-12-25 23:05:02,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:02,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:03,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:03,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899108749] [2023-12-25 23:05:03,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899108749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:03,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:03,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:05:03,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074341017] [2023-12-25 23:05:03,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:03,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:05:03,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:03,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:05:03,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:05:03,021 INFO L87 Difference]: Start difference. First operand 96 states and 149 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:03,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:03,124 INFO L93 Difference]: Finished difference Result 307 states and 476 transitions. [2023-12-25 23:05:03,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:05:03,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-25 23:05:03,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:03,125 INFO L225 Difference]: With dead ends: 307 [2023-12-25 23:05:03,125 INFO L226 Difference]: Without dead ends: 227 [2023-12-25 23:05:03,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:05:03,126 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 823 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:03,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 599 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-12-25 23:05:03,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 98. [2023-12-25 23:05:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.5463917525773196) internal successors, (150), 97 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 150 transitions. [2023-12-25 23:05:03,134 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 150 transitions. Word has length 25 [2023-12-25 23:05:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:03,134 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 150 transitions. [2023-12-25 23:05:03,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 150 transitions. [2023-12-25 23:05:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-25 23:05:03,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:03,135 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] [2023-12-25 23:05:03,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-25 23:05:03,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:03,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:03,136 INFO L85 PathProgramCache]: Analyzing trace with hash -566480881, now seen corresponding path program 1 times [2023-12-25 23:05:03,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:03,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546508387] [2023-12-25 23:05:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:03,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:03,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:03,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546508387] [2023-12-25 23:05:03,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546508387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:03,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:03,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:05:03,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779826262] [2023-12-25 23:05:03,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:03,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:05:03,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:03,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:05:03,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:05:03,213 INFO L87 Difference]: Start difference. First operand 98 states and 150 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:03,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:03,245 INFO L93 Difference]: Finished difference Result 229 states and 355 transitions. [2023-12-25 23:05:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:05:03,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-25 23:05:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:03,246 INFO L225 Difference]: With dead ends: 229 [2023-12-25 23:05:03,246 INFO L226 Difference]: Without dead ends: 148 [2023-12-25 23:05:03,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:05:03,248 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 404 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:03,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 372 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:03,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-12-25 23:05:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 94. [2023-12-25 23:05:03,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 93 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 144 transitions. [2023-12-25 23:05:03,261 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 144 transitions. Word has length 26 [2023-12-25 23:05:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:03,262 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 144 transitions. [2023-12-25 23:05:03,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 144 transitions. [2023-12-25 23:05:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-25 23:05:03,263 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:03,263 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:03,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-25 23:05:03,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:03,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1229362658, now seen corresponding path program 1 times [2023-12-25 23:05:03,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:03,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228604691] [2023-12-25 23:05:03,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:03,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:03,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:03,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228604691] [2023-12-25 23:05:03,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228604691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:03,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:03,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 23:05:03,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216836791] [2023-12-25 23:05:03,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:03,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:05:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:03,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:05:03,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:05:03,607 INFO L87 Difference]: Start difference. First operand 94 states and 144 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:04,006 INFO L93 Difference]: Finished difference Result 475 states and 747 transitions. [2023-12-25 23:05:04,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-25 23:05:04,006 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2023-12-25 23:05:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:04,009 INFO L225 Difference]: With dead ends: 475 [2023-12-25 23:05:04,009 INFO L226 Difference]: Without dead ends: 403 [2023-12-25 23:05:04,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2023-12-25 23:05:04,010 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1100 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:04,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1651 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-12-25 23:05:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 124. [2023-12-25 23:05:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.5447154471544715) internal successors, (190), 123 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 190 transitions. [2023-12-25 23:05:04,016 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 190 transitions. Word has length 70 [2023-12-25 23:05:04,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:04,017 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 190 transitions. [2023-12-25 23:05:04,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 190 transitions. [2023-12-25 23:05:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-25 23:05:04,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:04,021 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:05:04,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-25 23:05:04,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:04,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:04,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1329696452, now seen corresponding path program 1 times [2023-12-25 23:05:04,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:04,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064141453] [2023-12-25 23:05:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:04,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:04,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:04,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:04,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064141453] [2023-12-25 23:05:04,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064141453] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:04,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:04,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:05:04,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939529722] [2023-12-25 23:05:04,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:04,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:05:04,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:04,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:05:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:05:04,359 INFO L87 Difference]: Start difference. First operand 124 states and 190 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:04,439 INFO L93 Difference]: Finished difference Result 436 states and 676 transitions. [2023-12-25 23:05:04,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:05:04,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2023-12-25 23:05:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:04,443 INFO L225 Difference]: With dead ends: 436 [2023-12-25 23:05:04,443 INFO L226 Difference]: Without dead ends: 334 [2023-12-25 23:05:04,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:05:04,444 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 803 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:04,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 635 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-12-25 23:05:04,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 139. [2023-12-25 23:05:04,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.5217391304347827) internal successors, (210), 138 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:04,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 210 transitions. [2023-12-25 23:05:04,451 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 210 transitions. Word has length 71 [2023-12-25 23:05:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:04,452 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 210 transitions. [2023-12-25 23:05:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 210 transitions. [2023-12-25 23:05:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-25 23:05:04,452 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:04,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:04,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-25 23:05:04,453 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:04,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:04,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1694687856, now seen corresponding path program 1 times [2023-12-25 23:05:04,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:04,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721779546] [2023-12-25 23:05:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:04,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:04,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721779546] [2023-12-25 23:05:04,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721779546] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:04,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:04,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-25 23:05:04,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646252797] [2023-12-25 23:05:04,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:04,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-25 23:05:04,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:04,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-25 23:05:04,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-25 23:05:04,898 INFO L87 Difference]: Start difference. First operand 139 states and 210 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:05,085 INFO L93 Difference]: Finished difference Result 470 states and 737 transitions. [2023-12-25 23:05:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-25 23:05:05,086 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-12-25 23:05:05,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:05,087 INFO L225 Difference]: With dead ends: 470 [2023-12-25 23:05:05,088 INFO L226 Difference]: Without dead ends: 368 [2023-12-25 23:05:05,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-12-25 23:05:05,089 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 650 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:05,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1020 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-25 23:05:05,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 186. [2023-12-25 23:05:05,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.5297297297297296) internal successors, (283), 185 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 283 transitions. [2023-12-25 23:05:05,102 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 283 transitions. Word has length 72 [2023-12-25 23:05:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:05,103 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 283 transitions. [2023-12-25 23:05:05,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 9 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 283 transitions. [2023-12-25 23:05:05,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-25 23:05:05,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:05,103 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:05:05,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-25 23:05:05,104 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:05,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:05,104 INFO L85 PathProgramCache]: Analyzing trace with hash 844344288, now seen corresponding path program 1 times [2023-12-25 23:05:05,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:05,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258666421] [2023-12-25 23:05:05,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:05,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:05,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:05,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258666421] [2023-12-25 23:05:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258666421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:05,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-25 23:05:05,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869679527] [2023-12-25 23:05:05,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:05,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:05:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:05,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:05:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:05:05,427 INFO L87 Difference]: Start difference. First operand 186 states and 283 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:05,485 INFO L93 Difference]: Finished difference Result 394 states and 607 transitions. [2023-12-25 23:05:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:05:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-12-25 23:05:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:05,486 INFO L225 Difference]: With dead ends: 394 [2023-12-25 23:05:05,486 INFO L226 Difference]: Without dead ends: 292 [2023-12-25 23:05:05,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:05:05,487 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 320 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:05,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 600 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-12-25 23:05:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 192. [2023-12-25 23:05:05,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.5235602094240839) internal successors, (291), 191 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 291 transitions. [2023-12-25 23:05:05,493 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 291 transitions. Word has length 73 [2023-12-25 23:05:05,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:05,493 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 291 transitions. [2023-12-25 23:05:05,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:05,493 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 291 transitions. [2023-12-25 23:05:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-25 23:05:05,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:05,493 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:05:05,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-25 23:05:05,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:05,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash 866976542, now seen corresponding path program 1 times [2023-12-25 23:05:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:05,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711980498] [2023-12-25 23:05:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:05,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711980498] [2023-12-25 23:05:05,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711980498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:05,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:05,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-25 23:05:05,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446909864] [2023-12-25 23:05:05,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:05,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-25 23:05:05,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:05,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-25 23:05:05,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-25 23:05:05,761 INFO L87 Difference]: Start difference. First operand 192 states and 291 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:05,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:05,769 INFO L93 Difference]: Finished difference Result 300 states and 459 transitions. [2023-12-25 23:05:05,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-25 23:05:05,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-12-25 23:05:05,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:05,770 INFO L225 Difference]: With dead ends: 300 [2023-12-25 23:05:05,771 INFO L226 Difference]: Without dead ends: 165 [2023-12-25 23:05:05,771 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 [2023-12-25 23:05:05,771 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 108 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:05,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 253 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:05,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-25 23:05:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 145. [2023-12-25 23:05:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.5) internal successors, (216), 144 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) [2023-12-25 23:05:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 216 transitions. [2023-12-25 23:05:05,776 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 216 transitions. Word has length 73 [2023-12-25 23:05:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:05,777 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 216 transitions. [2023-12-25 23:05:05,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 216 transitions. [2023-12-25 23:05:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-25 23:05:05,777 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:05,777 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:05:05,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-25 23:05:05,778 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:05,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1588141818, now seen corresponding path program 1 times [2023-12-25 23:05:05,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:05,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76512844] [2023-12-25 23:05:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:05,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:06,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:06,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76512844] [2023-12-25 23:05:06,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76512844] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:06,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:06,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:05:06,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164419698] [2023-12-25 23:05:06,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:06,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:05:06,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:06,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:05:06,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:05:06,140 INFO L87 Difference]: Start difference. First operand 145 states and 216 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:06,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:06,380 INFO L93 Difference]: Finished difference Result 554 states and 846 transitions. [2023-12-25 23:05:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:05:06,380 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-12-25 23:05:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:06,381 INFO L225 Difference]: With dead ends: 554 [2023-12-25 23:05:06,382 INFO L226 Difference]: Without dead ends: 446 [2023-12-25 23:05:06,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:05:06,382 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 887 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:06,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1171 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2023-12-25 23:05:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 160. [2023-12-25 23:05:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.4968553459119496) internal successors, (238), 159 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 238 transitions. [2023-12-25 23:05:06,390 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 238 transitions. Word has length 73 [2023-12-25 23:05:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:06,390 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 238 transitions. [2023-12-25 23:05:06,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 238 transitions. [2023-12-25 23:05:06,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-25 23:05:06,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:06,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:06,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-25 23:05:06,391 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:06,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:06,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2057603684, now seen corresponding path program 1 times [2023-12-25 23:05:06,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:06,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368114416] [2023-12-25 23:05:06,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:06,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:07,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:07,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:07,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368114416] [2023-12-25 23:05:07,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368114416] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:05:07,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374268843] [2023-12-25 23:05:07,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:07,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:05:07,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:05:07,065 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) [2023-12-25 23:05:07,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-25 23:05:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:07,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-25 23:05:07,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:05:07,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:07,476 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:05:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:08,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374268843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:05:08,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:05:08,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 15] total 37 [2023-12-25 23:05:08,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368450011] [2023-12-25 23:05:08,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:05:08,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-25 23:05:08,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:08,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-25 23:05:08,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1265, Unknown=0, NotChecked=0, Total=1406 [2023-12-25 23:05:08,097 INFO L87 Difference]: Start difference. First operand 160 states and 238 transitions. Second operand has 38 states, 38 states have (on average 5.5) internal successors, (209), 37 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:27,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:27,957 INFO L93 Difference]: Finished difference Result 4755 states and 7306 transitions. [2023-12-25 23:05:27,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 319 states. [2023-12-25 23:05:27,958 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.5) internal successors, (209), 37 states have internal predecessors, (209), 0 states have call successors, (0), 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 73 [2023-12-25 23:05:27,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:27,968 INFO L225 Difference]: With dead ends: 4755 [2023-12-25 23:05:27,968 INFO L226 Difference]: Without dead ends: 4340 [2023-12-25 23:05:27,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53644 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=16845, Invalid=108117, Unknown=0, NotChecked=0, Total=124962 [2023-12-25 23:05:27,993 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 17282 mSDsluCounter, 9686 mSDsCounter, 0 mSdLazyCounter, 2504 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17282 SdHoareTripleChecker+Valid, 10053 SdHoareTripleChecker+Invalid, 2647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:27,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17282 Valid, 10053 Invalid, 2647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2504 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-25 23:05:27,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2023-12-25 23:05:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 505. [2023-12-25 23:05:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.492063492063492) internal successors, (752), 504 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 752 transitions. [2023-12-25 23:05:28,026 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 752 transitions. Word has length 73 [2023-12-25 23:05:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:28,027 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 752 transitions. [2023-12-25 23:05:28,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 5.5) internal successors, (209), 37 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:28,027 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 752 transitions. [2023-12-25 23:05:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 23:05:28,028 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:28,028 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:28,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-25 23:05:28,236 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,SelfDestructingSolverStorable12 [2023-12-25 23:05:28,237 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:28,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash -8850942, now seen corresponding path program 1 times [2023-12-25 23:05:28,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:28,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855891636] [2023-12-25 23:05:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:28,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:28,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:28,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855891636] [2023-12-25 23:05:28,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855891636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:28,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:28,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:05:28,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314457202] [2023-12-25 23:05:28,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:28,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:05:28,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:28,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:05:28,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:05:28,414 INFO L87 Difference]: Start difference. First operand 505 states and 752 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:28,500 INFO L93 Difference]: Finished difference Result 1120 states and 1670 transitions. [2023-12-25 23:05:28,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:05:28,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 23:05:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:28,502 INFO L225 Difference]: With dead ends: 1120 [2023-12-25 23:05:28,502 INFO L226 Difference]: Without dead ends: 666 [2023-12-25 23:05:28,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:05:28,503 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 434 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:28,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 398 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:28,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-25 23:05:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 502. [2023-12-25 23:05:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 501 states have (on average 1.4910179640718564) internal successors, (747), 501 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 747 transitions. [2023-12-25 23:05:28,529 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 747 transitions. Word has length 74 [2023-12-25 23:05:28,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:28,529 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 747 transitions. [2023-12-25 23:05:28,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:28,529 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 747 transitions. [2023-12-25 23:05:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 23:05:28,530 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:28,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:28,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-25 23:05:28,530 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:28,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:28,531 INFO L85 PathProgramCache]: Analyzing trace with hash -2056265180, now seen corresponding path program 1 times [2023-12-25 23:05:28,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:28,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42041549] [2023-12-25 23:05:28,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:28,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:28,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:28,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42041549] [2023-12-25 23:05:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42041549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:05:28,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916530789] [2023-12-25 23:05:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:28,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:05:28,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:05:28,849 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) [2023-12-25 23:05:28,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-25 23:05:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:28,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-25 23:05:28,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:05:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:29,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:05:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:29,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916530789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:05:29,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:05:29,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 14] total 34 [2023-12-25 23:05:29,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366946249] [2023-12-25 23:05:29,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:05:29,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-25 23:05:29,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:29,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-25 23:05:29,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2023-12-25 23:05:29,790 INFO L87 Difference]: Start difference. First operand 502 states and 747 transitions. Second operand has 35 states, 35 states have (on average 6.057142857142857) internal successors, (212), 34 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:31,621 INFO L93 Difference]: Finished difference Result 3415 states and 5174 transitions. [2023-12-25 23:05:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-25 23:05:31,621 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.057142857142857) internal successors, (212), 34 states have internal predecessors, (212), 0 states have call successors, (0), 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 74 [2023-12-25 23:05:31,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:31,629 INFO L225 Difference]: With dead ends: 3415 [2023-12-25 23:05:31,629 INFO L226 Difference]: Without dead ends: 3063 [2023-12-25 23:05:31,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2208 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1721, Invalid=6469, Unknown=0, NotChecked=0, Total=8190 [2023-12-25 23:05:31,631 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 2561 mSDsluCounter, 4633 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 4833 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:31,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2561 Valid, 4833 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-25 23:05:31,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2023-12-25 23:05:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 555. [2023-12-25 23:05:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 1.4909747292418774) internal successors, (826), 554 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 826 transitions. [2023-12-25 23:05:31,690 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 826 transitions. Word has length 74 [2023-12-25 23:05:31,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:31,690 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 826 transitions. [2023-12-25 23:05:31,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.057142857142857) internal successors, (212), 34 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 826 transitions. [2023-12-25 23:05:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 23:05:31,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:31,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:31,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-25 23:05:31,897 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,SelfDestructingSolverStorable14 [2023-12-25 23:05:31,897 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:31,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:31,898 INFO L85 PathProgramCache]: Analyzing trace with hash -7004980, now seen corresponding path program 1 times [2023-12-25 23:05:31,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:31,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371891067] [2023-12-25 23:05:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:31,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:32,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:32,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371891067] [2023-12-25 23:05:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371891067] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:32,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:32,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-25 23:05:32,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059181118] [2023-12-25 23:05:32,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:32,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-25 23:05:32,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:32,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-25 23:05:32,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-25 23:05:32,272 INFO L87 Difference]: Start difference. First operand 555 states and 826 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:33,358 INFO L93 Difference]: Finished difference Result 3990 states and 6011 transitions. [2023-12-25 23:05:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-25 23:05:33,359 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 23:05:33,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:33,367 INFO L225 Difference]: With dead ends: 3990 [2023-12-25 23:05:33,367 INFO L226 Difference]: Without dead ends: 3565 [2023-12-25 23:05:33,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=510, Invalid=1746, Unknown=0, NotChecked=0, Total=2256 [2023-12-25 23:05:33,368 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1565 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:33,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 2424 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:05:33,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2023-12-25 23:05:33,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 770. [2023-12-25 23:05:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.4785435630689208) internal successors, (1137), 769 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1137 transitions. [2023-12-25 23:05:33,423 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1137 transitions. Word has length 74 [2023-12-25 23:05:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:33,423 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 1137 transitions. [2023-12-25 23:05:33,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 12 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1137 transitions. [2023-12-25 23:05:33,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 23:05:33,424 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:33,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:33,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-25 23:05:33,424 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:33,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:33,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1036911020, now seen corresponding path program 1 times [2023-12-25 23:05:33,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:33,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914900685] [2023-12-25 23:05:33,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:33,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:33,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:33,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:33,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914900685] [2023-12-25 23:05:33,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914900685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:33,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:33,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:05:33,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004341984] [2023-12-25 23:05:33,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:33,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:05:33,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:33,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:05:33,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:05:33,585 INFO L87 Difference]: Start difference. First operand 770 states and 1137 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:33,913 INFO L93 Difference]: Finished difference Result 2972 states and 4354 transitions. [2023-12-25 23:05:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-25 23:05:33,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 23:05:33,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:33,928 INFO L225 Difference]: With dead ends: 2972 [2023-12-25 23:05:33,928 INFO L226 Difference]: Without dead ends: 2293 [2023-12-25 23:05:33,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-12-25 23:05:33,929 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 1298 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:33,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1298 Valid, 1242 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:05:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2023-12-25 23:05:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 785. [2023-12-25 23:05:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 784 states have (on average 1.469387755102041) internal successors, (1152), 784 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:33,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1152 transitions. [2023-12-25 23:05:33,981 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1152 transitions. Word has length 74 [2023-12-25 23:05:33,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:33,981 INFO L495 AbstractCegarLoop]: Abstraction has 785 states and 1152 transitions. [2023-12-25 23:05:33,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1152 transitions. [2023-12-25 23:05:33,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-25 23:05:33,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:33,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:05:33,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-25 23:05:33,983 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:33,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:33,984 INFO L85 PathProgramCache]: Analyzing trace with hash 740503398, now seen corresponding path program 1 times [2023-12-25 23:05:33,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:33,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536050521] [2023-12-25 23:05:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:34,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:34,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536050521] [2023-12-25 23:05:34,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536050521] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:05:34,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:05:34,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:05:34,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710108769] [2023-12-25 23:05:34,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:05:34,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:05:34,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:34,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:05:34,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:05:34,070 INFO L87 Difference]: Start difference. First operand 785 states and 1152 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:34,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:34,146 INFO L93 Difference]: Finished difference Result 1547 states and 2279 transitions. [2023-12-25 23:05:34,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:05:34,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2023-12-25 23:05:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:34,149 INFO L225 Difference]: With dead ends: 1547 [2023-12-25 23:05:34,149 INFO L226 Difference]: Without dead ends: 872 [2023-12-25 23:05:34,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:05:34,150 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 420 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:34,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 399 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:05:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-12-25 23:05:34,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 696. [2023-12-25 23:05:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 1.4733812949640288) internal successors, (1024), 695 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:34,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1024 transitions. [2023-12-25 23:05:34,192 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1024 transitions. Word has length 74 [2023-12-25 23:05:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:05:34,192 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 1024 transitions. [2023-12-25 23:05:34,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1024 transitions. [2023-12-25 23:05:34,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 23:05:34,193 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:05:34,194 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-25 23:05:34,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-25 23:05:34,194 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:05:34,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:05:34,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1184891896, now seen corresponding path program 1 times [2023-12-25 23:05:34,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:05:34,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849964591] [2023-12-25 23:05:34,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:34,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:05:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:34,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:05:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849964591] [2023-12-25 23:05:34,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849964591] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:05:34,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633664379] [2023-12-25 23:05:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:05:34,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:05:34,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:05:34,835 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) [2023-12-25 23:05:34,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-25 23:05:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:05:34,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 95 conjunts are in the unsatisfiable core [2023-12-25 23:05:34,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:05:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:35,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:05:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:05:37,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633664379] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:05:37,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:05:37,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 26] total 60 [2023-12-25 23:05:37,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619026549] [2023-12-25 23:05:37,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:05:37,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-25 23:05:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:05:37,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-25 23:05:37,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=3396, Unknown=0, NotChecked=0, Total=3660 [2023-12-25 23:05:37,044 INFO L87 Difference]: Start difference. First operand 696 states and 1024 transitions. Second operand has 61 states, 61 states have (on average 3.3442622950819674) internal successors, (204), 60 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:05:59,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:05:59,835 INFO L93 Difference]: Finished difference Result 19149 states and 29090 transitions. [2023-12-25 23:05:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2023-12-25 23:05:59,835 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.3442622950819674) internal successors, (204), 60 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-25 23:05:59,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:05:59,865 INFO L225 Difference]: With dead ends: 19149 [2023-12-25 23:05:59,865 INFO L226 Difference]: Without dead ends: 17521 [2023-12-25 23:05:59,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27542 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=9832, Invalid=58028, Unknown=0, NotChecked=0, Total=67860 [2023-12-25 23:05:59,873 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 11634 mSDsluCounter, 26333 mSDsCounter, 0 mSdLazyCounter, 7296 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11634 SdHoareTripleChecker+Valid, 27105 SdHoareTripleChecker+Invalid, 7370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 7296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-25 23:05:59,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11634 Valid, 27105 Invalid, 7370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 7296 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-25 23:05:59,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17521 states. [2023-12-25 23:06:00,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17521 to 1361. [2023-12-25 23:06:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1360 states have (on average 1.464705882352941) internal successors, (1992), 1360 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1992 transitions. [2023-12-25 23:06:00,050 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1992 transitions. Word has length 75 [2023-12-25 23:06:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:00,050 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1992 transitions. [2023-12-25 23:06:00,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.3442622950819674) internal successors, (204), 60 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:00,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1992 transitions. [2023-12-25 23:06:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 23:06:00,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:00,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:00,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-25 23:06:00,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:06:00,270 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:00,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash 984464516, now seen corresponding path program 1 times [2023-12-25 23:06:00,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:00,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091927347] [2023-12-25 23:06:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:00,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:00,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:00,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:00,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091927347] [2023-12-25 23:06:00,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091927347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:00,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:06:00,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-25 23:06:00,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471593626] [2023-12-25 23:06:00,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:00,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:06:00,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:00,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:06:00,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-25 23:06:00,560 INFO L87 Difference]: Start difference. First operand 1361 states and 1992 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:00,825 INFO L93 Difference]: Finished difference Result 3471 states and 5080 transitions. [2023-12-25 23:06:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-25 23:06:00,826 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-25 23:06:00,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:00,829 INFO L225 Difference]: With dead ends: 3471 [2023-12-25 23:06:00,829 INFO L226 Difference]: Without dead ends: 2287 [2023-12-25 23:06:00,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-12-25 23:06:00,831 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 408 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:00,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 1010 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:06:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2287 states. [2023-12-25 23:06:00,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2287 to 1397. [2023-12-25 23:06:00,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1396 states have (on average 1.4570200573065903) internal successors, (2034), 1396 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:00,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2034 transitions. [2023-12-25 23:06:00,933 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2034 transitions. Word has length 75 [2023-12-25 23:06:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:00,934 INFO L495 AbstractCegarLoop]: Abstraction has 1397 states and 2034 transitions. [2023-12-25 23:06:00,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2034 transitions. [2023-12-25 23:06:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-25 23:06:00,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:00,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:00,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-25 23:06:00,935 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:00,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:00,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1573555030, now seen corresponding path program 1 times [2023-12-25 23:06:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:00,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456542349] [2023-12-25 23:06:00,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:00,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:01,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:01,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456542349] [2023-12-25 23:06:01,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456542349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:01,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:06:01,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:06:01,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300262655] [2023-12-25 23:06:01,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:01,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:06:01,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:01,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:06:01,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:06:01,065 INFO L87 Difference]: Start difference. First operand 1397 states and 2034 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:01,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:01,201 INFO L93 Difference]: Finished difference Result 2930 states and 4274 transitions. [2023-12-25 23:06:01,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:06:01,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-12-25 23:06:01,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:01,204 INFO L225 Difference]: With dead ends: 2930 [2023-12-25 23:06:01,204 INFO L226 Difference]: Without dead ends: 1662 [2023-12-25 23:06:01,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:06:01,205 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 425 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:01,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 421 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:06:01,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2023-12-25 23:06:01,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1358. [2023-12-25 23:06:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1357 states have (on average 1.4502579218865144) internal successors, (1968), 1357 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1968 transitions. [2023-12-25 23:06:01,311 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1968 transitions. Word has length 75 [2023-12-25 23:06:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:01,311 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 1968 transitions. [2023-12-25 23:06:01,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:01,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1968 transitions. [2023-12-25 23:06:01,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 23:06:01,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:01,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:01,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-25 23:06:01,313 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:01,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:01,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1477123580, now seen corresponding path program 1 times [2023-12-25 23:06:01,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:01,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432782204] [2023-12-25 23:06:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:01,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:01,458 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:01,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:01,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432782204] [2023-12-25 23:06:01,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432782204] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:01,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:06:01,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-25 23:06:01,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408577385] [2023-12-25 23:06:01,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:01,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-25 23:06:01,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:01,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-25 23:06:01,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-25 23:06:01,460 INFO L87 Difference]: Start difference. First operand 1358 states and 1968 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:01,634 INFO L93 Difference]: Finished difference Result 2813 states and 4129 transitions. [2023-12-25 23:06:01,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 23:06:01,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-25 23:06:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:01,637 INFO L225 Difference]: With dead ends: 2813 [2023-12-25 23:06:01,638 INFO L226 Difference]: Without dead ends: 2026 [2023-12-25 23:06:01,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:06:01,640 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 718 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:01,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 807 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:06:01,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-12-25 23:06:01,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1361. [2023-12-25 23:06:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1360 states have (on average 1.4470588235294117) internal successors, (1968), 1360 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1968 transitions. [2023-12-25 23:06:01,751 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1968 transitions. Word has length 76 [2023-12-25 23:06:01,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:01,751 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1968 transitions. [2023-12-25 23:06:01,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:01,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1968 transitions. [2023-12-25 23:06:01,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 23:06:01,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:01,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:01,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-25 23:06:01,753 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:01,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:01,754 INFO L85 PathProgramCache]: Analyzing trace with hash -138218860, now seen corresponding path program 1 times [2023-12-25 23:06:01,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:01,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746046221] [2023-12-25 23:06:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:01,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746046221] [2023-12-25 23:06:02,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746046221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:02,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:06:02,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-12-25 23:06:02,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126315753] [2023-12-25 23:06:02,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:02,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-25 23:06:02,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:02,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-25 23:06:02,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-12-25 23:06:02,157 INFO L87 Difference]: Start difference. First operand 1361 states and 1968 transitions. Second operand has 16 states, 16 states have (on average 4.75) internal successors, (76), 15 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:02,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:02,607 INFO L93 Difference]: Finished difference Result 2926 states and 4313 transitions. [2023-12-25 23:06:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-25 23:06:02,609 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 15 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-25 23:06:02,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:02,612 INFO L225 Difference]: With dead ends: 2926 [2023-12-25 23:06:02,612 INFO L226 Difference]: Without dead ends: 1857 [2023-12-25 23:06:02,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2023-12-25 23:06:02,613 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 570 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:02,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 2381 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:06:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2023-12-25 23:06:02,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1288. [2023-12-25 23:06:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 1.4537684537684539) internal successors, (1871), 1287 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1871 transitions. [2023-12-25 23:06:02,715 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1871 transitions. Word has length 76 [2023-12-25 23:06:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:02,715 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1871 transitions. [2023-12-25 23:06:02,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.75) internal successors, (76), 15 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1871 transitions. [2023-12-25 23:06:02,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-25 23:06:02,716 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:02,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:02,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-25 23:06:02,716 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:02,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1855369268, now seen corresponding path program 1 times [2023-12-25 23:06:02,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:02,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070296097] [2023-12-25 23:06:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:02,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:02,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:02,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070296097] [2023-12-25 23:06:02,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070296097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:02,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:06:02,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:06:02,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070732753] [2023-12-25 23:06:02,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:02,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:06:02,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:06:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:06:02,807 INFO L87 Difference]: Start difference. First operand 1288 states and 1871 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:02,923 INFO L93 Difference]: Finished difference Result 2669 states and 3868 transitions. [2023-12-25 23:06:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:06:02,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-25 23:06:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:02,925 INFO L225 Difference]: With dead ends: 2669 [2023-12-25 23:06:02,925 INFO L226 Difference]: Without dead ends: 1426 [2023-12-25 23:06:02,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:06:02,927 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 379 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:02,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 384 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:06:02,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2023-12-25 23:06:03,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1278. [2023-12-25 23:06:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1277 states have (on average 1.4502740798747062) internal successors, (1852), 1277 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1852 transitions. [2023-12-25 23:06:03,011 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1852 transitions. Word has length 76 [2023-12-25 23:06:03,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:03,012 INFO L495 AbstractCegarLoop]: Abstraction has 1278 states and 1852 transitions. [2023-12-25 23:06:03,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:03,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1852 transitions. [2023-12-25 23:06:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 23:06:03,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:03,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:03,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-25 23:06:03,013 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:03,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:03,014 INFO L85 PathProgramCache]: Analyzing trace with hash -687435372, now seen corresponding path program 1 times [2023-12-25 23:06:03,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:03,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002184499] [2023-12-25 23:06:03,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:03,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:03,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:03,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002184499] [2023-12-25 23:06:03,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002184499] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:06:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502663685] [2023-12-25 23:06:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:03,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:06:03,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:06:03,423 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) [2023-12-25 23:06:03,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-25 23:06:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:03,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-25 23:06:03,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:06:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:03,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 23:06:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502663685] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 23:06:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 23 [2023-12-25 23:06:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173884422] [2023-12-25 23:06:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:03,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-25 23:06:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:03,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-25 23:06:03,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2023-12-25 23:06:03,696 INFO L87 Difference]: Start difference. First operand 1278 states and 1852 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:03,924 INFO L93 Difference]: Finished difference Result 2121 states and 3049 transitions. [2023-12-25 23:06:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-25 23:06:03,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-25 23:06:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:03,926 INFO L225 Difference]: With dead ends: 2121 [2023-12-25 23:06:03,926 INFO L226 Difference]: Without dead ends: 1409 [2023-12-25 23:06:03,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2023-12-25 23:06:03,927 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 654 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:03,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 768 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:06:03,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2023-12-25 23:06:04,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1277. [2023-12-25 23:06:04,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 1.4498432601880877) internal successors, (1850), 1276 states have internal predecessors, (1850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1850 transitions. [2023-12-25 23:06:04,010 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1850 transitions. Word has length 77 [2023-12-25 23:06:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:04,010 INFO L495 AbstractCegarLoop]: Abstraction has 1277 states and 1850 transitions. [2023-12-25 23:06:04,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1850 transitions. [2023-12-25 23:06:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 23:06:04,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:04,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:04,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-25 23:06:04,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:06:04,216 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:04,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1321520736, now seen corresponding path program 1 times [2023-12-25 23:06:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:04,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478964861] [2023-12-25 23:06:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:04,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:04,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478964861] [2023-12-25 23:06:04,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478964861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:04,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:06:04,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-25 23:06:04,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800350050] [2023-12-25 23:06:04,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:04,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-25 23:06:04,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-25 23:06:04,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-25 23:06:04,578 INFO L87 Difference]: Start difference. First operand 1277 states and 1850 transitions. Second operand has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:04,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:04,887 INFO L93 Difference]: Finished difference Result 2341 states and 3432 transitions. [2023-12-25 23:06:04,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-25 23:06:04,887 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-25 23:06:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:04,889 INFO L225 Difference]: With dead ends: 2341 [2023-12-25 23:06:04,889 INFO L226 Difference]: Without dead ends: 1551 [2023-12-25 23:06:04,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2023-12-25 23:06:04,890 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1011 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:04,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 1082 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:06:04,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2023-12-25 23:06:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1233. [2023-12-25 23:06:04,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 1.4521103896103895) internal successors, (1789), 1232 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1789 transitions. [2023-12-25 23:06:04,972 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1789 transitions. Word has length 77 [2023-12-25 23:06:04,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:04,972 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1789 transitions. [2023-12-25 23:06:04,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:04,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1789 transitions. [2023-12-25 23:06:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 23:06:04,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:04,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:04,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-25 23:06:04,973 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:04,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:04,974 INFO L85 PathProgramCache]: Analyzing trace with hash 593330536, now seen corresponding path program 1 times [2023-12-25 23:06:04,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:04,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711176665] [2023-12-25 23:06:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:04,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:05,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:05,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:05,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711176665] [2023-12-25 23:06:05,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711176665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:05,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:06:05,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-25 23:06:05,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214593350] [2023-12-25 23:06:05,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:05,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-25 23:06:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:05,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-25 23:06:05,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:06:05,171 INFO L87 Difference]: Start difference. First operand 1233 states and 1789 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:05,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:05,367 INFO L93 Difference]: Finished difference Result 2154 states and 3197 transitions. [2023-12-25 23:06:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-25 23:06:05,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-25 23:06:05,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:05,369 INFO L225 Difference]: With dead ends: 2154 [2023-12-25 23:06:05,369 INFO L226 Difference]: Without dead ends: 1495 [2023-12-25 23:06:05,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-25 23:06:05,370 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 360 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:05,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 961 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 23:06:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2023-12-25 23:06:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1209. [2023-12-25 23:06:05,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 1.4528145695364238) internal successors, (1755), 1208 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:05,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1755 transitions. [2023-12-25 23:06:05,444 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1755 transitions. Word has length 77 [2023-12-25 23:06:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:05,444 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1755 transitions. [2023-12-25 23:06:05,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1755 transitions. [2023-12-25 23:06:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-25 23:06:05,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:05,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:05,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-25 23:06:05,445 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:05,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 407499948, now seen corresponding path program 1 times [2023-12-25 23:06:05,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:05,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754872661] [2023-12-25 23:06:05,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:05,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:05,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:05,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754872661] [2023-12-25 23:06:05,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754872661] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:05,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:06:05,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-25 23:06:05,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762214175] [2023-12-25 23:06:05,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:05,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 23:06:05,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 23:06:05,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-25 23:06:05,539 INFO L87 Difference]: Start difference. First operand 1209 states and 1755 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:05,633 INFO L93 Difference]: Finished difference Result 1786 states and 2616 transitions. [2023-12-25 23:06:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 23:06:05,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-25 23:06:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:05,635 INFO L225 Difference]: With dead ends: 1786 [2023-12-25 23:06:05,635 INFO L226 Difference]: Without dead ends: 1101 [2023-12-25 23:06:05,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-25 23:06:05,636 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 343 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:05,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 379 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 23:06:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2023-12-25 23:06:05,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1099. [2023-12-25 23:06:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 1098 states have (on average 1.481785063752277) internal successors, (1627), 1098 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:05,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1627 transitions. [2023-12-25 23:06:05,707 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1627 transitions. Word has length 77 [2023-12-25 23:06:05,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:05,707 INFO L495 AbstractCegarLoop]: Abstraction has 1099 states and 1627 transitions. [2023-12-25 23:06:05,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:05,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1627 transitions. [2023-12-25 23:06:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 23:06:05,708 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:05,709 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:05,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-25 23:06:05,709 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:05,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:05,710 INFO L85 PathProgramCache]: Analyzing trace with hash 208126392, now seen corresponding path program 1 times [2023-12-25 23:06:05,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:05,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236054439] [2023-12-25 23:06:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:05,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:06,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236054439] [2023-12-25 23:06:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236054439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 23:06:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 23:06:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-25 23:06:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33726700] [2023-12-25 23:06:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 23:06:06,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 23:06:06,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:06:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 23:06:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-12-25 23:06:06,174 INFO L87 Difference]: Start difference. First operand 1099 states and 1627 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:06,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 23:06:06,654 INFO L93 Difference]: Finished difference Result 1852 states and 2720 transitions. [2023-12-25 23:06:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 23:06:06,654 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-25 23:06:06,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 23:06:06,655 INFO L225 Difference]: With dead ends: 1852 [2023-12-25 23:06:06,655 INFO L226 Difference]: Without dead ends: 1499 [2023-12-25 23:06:06,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2023-12-25 23:06:06,660 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 1215 mSDsluCounter, 1866 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-25 23:06:06,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 2073 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-25 23:06:06,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2023-12-25 23:06:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1107. [2023-12-25 23:06:06,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 1.4792043399638337) internal successors, (1636), 1106 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1636 transitions. [2023-12-25 23:06:06,736 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1636 transitions. Word has length 78 [2023-12-25 23:06:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 23:06:06,736 INFO L495 AbstractCegarLoop]: Abstraction has 1107 states and 1636 transitions. [2023-12-25 23:06:06,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 13 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:06:06,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1636 transitions. [2023-12-25 23:06:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-25 23:06:06,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 23:06:06,737 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:06:06,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-25 23:06:06,737 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 23:06:06,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 23:06:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash 270166006, now seen corresponding path program 1 times [2023-12-25 23:06:06,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-25 23:06:06,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110792164] [2023-12-25 23:06:06,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:06,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-25 23:06:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:06:07,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-25 23:06:07,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110792164] [2023-12-25 23:06:07,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110792164] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-25 23:06:07,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57077384] [2023-12-25 23:06:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 23:06:07,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-25 23:06:07,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 23:06:07,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-25 23:06:07,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-25 23:06:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 23:06:07,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 109 conjunts are in the unsatisfiable core [2023-12-25 23:06:07,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 23:06:20,576 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 23:06:35,478 WARN L293 SmtUtils]: Spent 9.46s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:06:52,356 WARN L293 SmtUtils]: Spent 6.22s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:07:42,226 WARN L293 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 44 DAG size of output: 41 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:08:16,352 WARN L293 SmtUtils]: Spent 13.85s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:08:24,643 WARN L293 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 23:08:54,230 WARN L293 SmtUtils]: Spent 10.99s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:09:19,635 WARN L293 SmtUtils]: Spent 8.98s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:09:43,293 WARN L293 SmtUtils]: Spent 10.30s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:09:56,058 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 23:10:15,465 WARN L293 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:10:59,507 WARN L854 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~var_29~0#1| 1) (<= |c_ULTIMATE.start_main_#t~nondet51#1| 255) (<= 0 |c_ULTIMATE.start_main_#t~nondet51#1|) (let ((.cse1 (mod |c_ULTIMATE.start_main_#t~nondet51#1| 64))) (let ((.cse2 (* .cse1 4))) (let ((.cse0 (+ .cse2 (* |c_ULTIMATE.start_main_#t~nondet51#1| 1021)))) (<= (+ (* 1024 (div (+ (* 256 (div .cse0 256)) 251 (* (- 1) |c_ULTIMATE.start_main_#t~nondet51#1|) (* (- 4) .cse1)) 1024)) (* 256 (div (+ |c_ULTIMATE.start_main_#t~nondet51#1| .cse2) 256)) 1024) .cse0)))) (= |c_ULTIMATE.start_main_~mask_SORT_3~0#1| 1)) is different from false [2023-12-25 23:11:26,620 WARN L293 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:12:40,614 WARN L293 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-25 23:13:34,406 WARN L293 SmtUtils]: Spent 7.45s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:14:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:14:02,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 23:16:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-25 23:16:34,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57077384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 23:16:34,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-25 23:16:34,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26, 28] total 71 [2023-12-25 23:16:34,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401740640] [2023-12-25 23:16:34,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-25 23:16:34,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-12-25 23:16:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-25 23:16:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-12-25 23:16:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=4408, Unknown=25, NotChecked=138, Total=5112 [2023-12-25 23:16:34,193 INFO L87 Difference]: Start difference. First operand 1107 states and 1636 transitions. Second operand has 72 states, 72 states have (on average 3.111111111111111) internal successors, (224), 71 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 23:17:11,045 WARN L293 SmtUtils]: Spent 25.99s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:17:36,873 WARN L293 SmtUtils]: Spent 16.53s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:17:38,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 23:18:06,847 WARN L293 SmtUtils]: Spent 14.39s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:18:08,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 23:18:09,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 23:18:11,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 23:18:57,152 WARN L293 SmtUtils]: Spent 18.78s on a formula simplification that was a NOOP. DAG size: 78 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-25 23:19:01,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 23:19:02,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 23:19:04,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 23:19:09,034 WARN L854 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~var_29~0#1| 1) (= |c_ULTIMATE.start_main_~var_14~0#1| 0) (<= |c_ULTIMATE.start_main_~var_59~0#1| 255) (let ((.cse1 (mod |c_ULTIMATE.start_main_~var_65~0#1| 64))) (let ((.cse2 (* .cse1 4))) (let ((.cse0 (+ .cse2 (* |c_ULTIMATE.start_main_~var_65~0#1| 1021)))) (<= (+ (* (div (+ 251 (* (- 1) |c_ULTIMATE.start_main_~var_65~0#1|) (* 256 (div .cse0 256)) (* .cse1 (- 4))) 1024) 1024) (* 256 (div (+ |c_ULTIMATE.start_main_~var_65~0#1| .cse2) 256)) 1024) .cse0)))) (= |c_ULTIMATE.start_main_~state_20~0#1| 0) (<= 0 (+ (* (div (+ (* (- 1) |c_ULTIMATE.start_main_~var_26_arg_1~0#1|) 63) 256) 256) |c_ULTIMATE.start_main_~var_26_arg_1~0#1|)) (= (+ |c_ULTIMATE.start_main_~var_52~0#1| 1) 0) (= |c_ULTIMATE.start_main_~var_64_arg_1~0#1| (mod (+ 255 (* (div |c_ULTIMATE.start_main_~var_64_arg_0~0#1| 4) 255)) 256)) (<= (+ |c_ULTIMATE.start_main_~var_65~0#1| 1) 0) (= (+ |c_ULTIMATE.start_main_~var_63_arg_0~0#1| (mod (div |c_ULTIMATE.start_main_~var_59~0#1| 4) 256) 1) 0) (<= |c_ULTIMATE.start_main_~var_64_arg_0~0#1| 255) (= (mod |c_ULTIMATE.start_main_~var_65~0#1| 256) |c_ULTIMATE.start_main_#t~nondet48#1|) (<= 0 |c_ULTIMATE.start_main_~var_59~0#1|) (<= 0 |c_ULTIMATE.start_main_~var_64_arg_0~0#1|) (<= 0 (+ |c_ULTIMATE.start_main_~var_65~0#1| 256)) (= |c_ULTIMATE.start_main_~mask_SORT_3~0#1| 1) (<= 0 (+ (* 256 (div (+ (* (- 1) |c_ULTIMATE.start_main_~state_24~0#1|) 63) 256)) |c_ULTIMATE.start_main_~state_24~0#1|)) (= |c_ULTIMATE.start_main_~var_65~0#1| |c_ULTIMATE.start_main_~var_67_arg_0~0#1|)) is different from false Received shutdown request... [2023-12-25 23:19:20,511 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 23:19:20,511 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-25 23:19:21,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-25 23:19:21,717 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-25 23:19:21,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-25 23:19:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-25 23:19:21,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 592.8s TimeCoverageRelationStatistics Valid=870, Invalid=6083, Unknown=27, NotChecked=330, Total=7310 [2023-12-25 23:19:21,728 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 355 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-12-25 23:19:21,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 903 Invalid, 1607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1440 Invalid, 0 Unknown, 165 Unchecked, 15.6s Time] [2023-12-25 23:19:21,729 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 23:19:21,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-25 23:19:21,730 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (1107states) and FLOYD_HOARE automaton (currently 18 states, 72 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-25 23:19:21,733 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 23:19:21,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 23:19:21,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 11:19:21 BoogieIcfgContainer [2023-12-25 23:19:21,735 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 23:19:21,736 INFO L158 Benchmark]: Toolchain (without parser) took 862026.37ms. Allocated memory was 182.5MB in the beginning and 822.1MB in the end (delta: 639.6MB). Free memory was 118.1MB in the beginning and 432.5MB in the end (delta: -314.4MB). Peak memory consumption was 325.9MB. Max. memory is 8.0GB. [2023-12-25 23:19:21,742 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 23:19:21,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.91ms. Allocated memory was 182.5MB in the beginning and 262.1MB in the end (delta: 79.7MB). Free memory was 117.9MB in the beginning and 226.9MB in the end (delta: -109.0MB). Peak memory consumption was 19.5MB. Max. memory is 8.0GB. [2023-12-25 23:19:21,745 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.76ms. Allocated memory is still 262.1MB. Free memory was 226.8MB in the beginning and 224.1MB in the end (delta: 2.7MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. [2023-12-25 23:19:21,745 INFO L158 Benchmark]: Boogie Preprocessor took 59.11ms. Allocated memory is still 262.1MB. Free memory was 224.1MB in the beginning and 218.3MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-12-25 23:19:21,745 INFO L158 Benchmark]: RCFGBuilder took 663.45ms. Allocated memory is still 262.1MB. Free memory was 218.3MB in the beginning and 171.1MB in the end (delta: 47.2MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. [2023-12-25 23:19:21,745 INFO L158 Benchmark]: TraceAbstraction took 860942.30ms. Allocated memory was 262.1MB in the beginning and 822.1MB in the end (delta: 559.9MB). Free memory was 170.1MB in the beginning and 432.5MB in the end (delta: -262.4MB). Peak memory consumption was 297.5MB. Max. memory is 8.0GB. [2023-12-25 23:19:21,745 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 182.5MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 270.91ms. Allocated memory was 182.5MB in the beginning and 262.1MB in the end (delta: 79.7MB). Free memory was 117.9MB in the beginning and 226.9MB in the end (delta: -109.0MB). Peak memory consumption was 19.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 77.76ms. Allocated memory is still 262.1MB. Free memory was 226.8MB in the beginning and 224.1MB in the end (delta: 2.7MB). Peak memory consumption was 10.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 59.11ms. Allocated memory is still 262.1MB. Free memory was 224.1MB in the beginning and 218.3MB in the end (delta: 5.7MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * RCFGBuilder took 663.45ms. Allocated memory is still 262.1MB. Free memory was 218.3MB in the beginning and 171.1MB in the end (delta: 47.2MB). Peak memory consumption was 47.2MB. Max. memory is 8.0GB. * TraceAbstraction took 860942.30ms. Allocated memory was 262.1MB in the beginning and 822.1MB in the end (delta: 559.9MB). Free memory was 170.1MB in the beginning and 432.5MB in the end (delta: -262.4MB). Peak memory consumption was 297.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was constructing difference of abstraction (1107states) and FLOYD_HOARE automaton (currently 18 states, 72 states before enhancement),while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 860.9s, OverallIterations: 30, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 218.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 49068 SdHoareTripleChecker+Valid, 25.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49068 mSDsluCounter, 66301 SdHoareTripleChecker+Invalid, 23.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 165 IncrementalHoareTripleChecker+Unchecked, 60455 mSDsCounter, 258 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15087 IncrementalHoareTripleChecker+Invalid, 15510 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 258 mSolverCounterUnsat, 5846 mSDtfsCounter, 15087 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1743 GetRequests, 590 SyntacticMatches, 3 SemanticMatches, 1149 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 86981 ImplicationChecksByTransitivity, 632.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1397occurred in iteration=20, InterpolantAutomatonStates: 877, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 29 MinimizatonAttempts, 32480 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 638.3s InterpolantComputationTime, 2314 NumberOfCodeBlocks, 2314 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2575 ConstructedInterpolants, 0 QuantifiedInterpolants, 18172 SizeOfPredicates, 117 NumberOfNonLiveVariables, 2114 ConjunctsInSsa, 325 ConjunctsInUnsatCore, 39 InterpolantComputations, 26 PerfectInterpolantSequences, 328/404 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown