/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/loop-invgen/up.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:50:04,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:50:04,101 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:50:04,104 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:50:04,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:50:04,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:50:04,126 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:50:04,126 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:50:04,127 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:50:04,130 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:50:04,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:50:04,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:50:04,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:50:04,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:50:04,132 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:50:04,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:50:04,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:50:04,133 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:50:04,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:50:04,133 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:50:04,133 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:50:04,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:50:04,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:50:04,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:50:04,134 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:50:04,134 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:50:04,134 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:50:04,134 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:50:04,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:50:04,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:50:04,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:50:04,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:50:04,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:50:04,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:50:04,136 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:50:04,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:50:04,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:50:04,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:50:04,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:50:04,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:50:04,137 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:50:04,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:50:04,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:50:04,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:50:04,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:50:04,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:50:04,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:50:04,339 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:50:04,339 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:50:04,340 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/up.i [2023-12-16 04:50:05,315 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:50:05,467 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:50:05,467 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i [2023-12-16 04:50:05,474 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b477de19/1a5daffaee4e41dfb92a1fad8433f374/FLAG50d3c6458 [2023-12-16 04:50:05,487 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b477de19/1a5daffaee4e41dfb92a1fad8433f374 [2023-12-16 04:50:05,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:50:05,490 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:50:05,493 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:50:05,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:50:05,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:50:05,499 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52cc5efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05, skipping insertion in model container [2023-12-16 04:50:05,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,517 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:50:05,632 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2023-12-16 04:50:05,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:50:05,648 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:50:05,657 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/up.i[893,906] [2023-12-16 04:50:05,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:50:05,671 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:50:05,671 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05 WrapperNode [2023-12-16 04:50:05,671 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:50:05,672 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:50:05,672 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:50:05,672 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:50:05,677 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,682 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,692 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-12-16 04:50:05,692 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:50:05,693 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:50:05,693 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:50:05,693 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:50:05,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,706 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]. [2023-12-16 04:50:05,706 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,711 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:50:05,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:50:05,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:50:05,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:50:05,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (1/1) ... [2023-12-16 04:50:05,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:50:05,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:05,738 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) [2023-12-16 04:50:05,749 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 [2023-12-16 04:50:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:50:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:50:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:50:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:50:05,819 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:50:05,821 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:50:05,975 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:50:05,994 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:50:05,994 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 04:50:05,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:50:05 BoogieIcfgContainer [2023-12-16 04:50:05,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:50:06,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:50:06,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:50:06,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:50:06,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:50:05" (1/3) ... [2023-12-16 04:50:06,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25db588a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:50:06, skipping insertion in model container [2023-12-16 04:50:06,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:50:05" (2/3) ... [2023-12-16 04:50:06,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25db588a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:50:06, skipping insertion in model container [2023-12-16 04:50:06,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:50:05" (3/3) ... [2023-12-16 04:50:06,014 INFO L112 eAbstractionObserver]: Analyzing ICFG up.i [2023-12-16 04:50:06,042 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:50:06,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:50:06,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:50:06,128 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;@343095, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:50:06,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:50:06,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:06,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-16 04:50:06,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:06,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-16 04:50:06,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:06,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2070081356, now seen corresponding path program 1 times [2023-12-16 04:50:06,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:06,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185020065] [2023-12-16 04:50:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:06,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185020065] [2023-12-16 04:50:06,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185020065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:06,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:50:06,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-16 04:50:06,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3600050] [2023-12-16 04:50:06,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:06,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:50:06,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:06,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:50:06,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:50:06,456 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:06,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:06,563 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2023-12-16 04:50:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:50:06,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-12-16 04:50:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:06,583 INFO L225 Difference]: With dead ends: 22 [2023-12-16 04:50:06,583 INFO L226 Difference]: Without dead ends: 9 [2023-12-16 04:50:06,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:50:06,589 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:06,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 21 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-16 04:50:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-12-16 04:50:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-12-16 04:50:06,628 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-12-16 04:50:06,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:06,629 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-12-16 04:50:06,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-12-16 04:50:06,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-16 04:50:06,629 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:06,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:50:06,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:50:06,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:06,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:06,630 INFO L85 PathProgramCache]: Analyzing trace with hash -200541263, now seen corresponding path program 1 times [2023-12-16 04:50:06,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:06,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689248667] [2023-12-16 04:50:06,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:06,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:06,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:06,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689248667] [2023-12-16 04:50:06,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689248667] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:06,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987559222] [2023-12-16 04:50:06,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:06,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:06,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:06,831 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) [2023-12-16 04:50:06,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:50:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:06,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:50:06,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:06,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:50:06,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987559222] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:50:06,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:50:06,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-12-16 04:50:06,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392304951] [2023-12-16 04:50:06,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:50:06,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:50:06,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:06,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:50:06,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:50:06,962 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:06,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:06,986 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-12-16 04:50:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:50:06,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2023-12-16 04:50:06,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:06,988 INFO L225 Difference]: With dead ends: 19 [2023-12-16 04:50:06,988 INFO L226 Difference]: Without dead ends: 17 [2023-12-16 04:50:06,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:50:06,991 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:06,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:06,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-12-16 04:50:06,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2023-12-16 04:50:06,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-12-16 04:50:06,997 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2023-12-16 04:50:06,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:06,997 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-12-16 04:50:06,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:06,998 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-12-16 04:50:06,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-16 04:50:06,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:06,998 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:50:07,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 04:50:07,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:07,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:07,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:07,204 INFO L85 PathProgramCache]: Analyzing trace with hash -20437016, now seen corresponding path program 1 times [2023-12-16 04:50:07,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:07,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941853906] [2023-12-16 04:50:07,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:07,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:07,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:07,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941853906] [2023-12-16 04:50:07,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941853906] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:07,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072901937] [2023-12-16 04:50:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:07,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:07,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:07,272 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) [2023-12-16 04:50:07,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:50:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-16 04:50:07,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:07,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:07,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:07,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072901937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:07,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:07,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-12-16 04:50:07,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854866246] [2023-12-16 04:50:07,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:07,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 04:50:07,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:07,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 04:50:07,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:50:07,406 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:07,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:07,448 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-12-16 04:50:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-16 04:50:07,449 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 10 [2023-12-16 04:50:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:07,449 INFO L225 Difference]: With dead ends: 22 [2023-12-16 04:50:07,449 INFO L226 Difference]: Without dead ends: 12 [2023-12-16 04:50:07,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:50:07,450 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:07,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:07,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-16 04:50:07,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-12-16 04:50:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:07,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-12-16 04:50:07,453 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2023-12-16 04:50:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:07,453 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-12-16 04:50:07,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:07,453 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-12-16 04:50:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-16 04:50:07,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:07,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:50:07,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:07,675 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,SelfDestructingSolverStorable2 [2023-12-16 04:50:07,678 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:07,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:07,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1449494067, now seen corresponding path program 2 times [2023-12-16 04:50:07,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:07,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513086522] [2023-12-16 04:50:07,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:07,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:07,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:07,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:07,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513086522] [2023-12-16 04:50:07,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513086522] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:07,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4290974] [2023-12-16 04:50:07,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:50:07,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:07,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:07,749 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) [2023-12-16 04:50:07,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:50:07,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:50:07,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:07,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:50:07,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:07,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:07,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:07,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4290974] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:07,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:07,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-12-16 04:50:07,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650576744] [2023-12-16 04:50:07,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:07,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-16 04:50:07,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-16 04:50:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-16 04:50:07,858 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:07,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:07,892 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-12-16 04:50:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-16 04:50:07,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 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 11 [2023-12-16 04:50:07,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:07,893 INFO L225 Difference]: With dead ends: 23 [2023-12-16 04:50:07,893 INFO L226 Difference]: Without dead ends: 21 [2023-12-16 04:50:07,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:50:07,893 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:07,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:07,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-16 04:50:07,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2023-12-16 04:50:07,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-12-16 04:50:07,896 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2023-12-16 04:50:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:07,896 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-12-16 04:50:07,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-12-16 04:50:07,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-16 04:50:07,897 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:07,897 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-16 04:50:07,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 04:50:08,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:08,102 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:08,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:08,103 INFO L85 PathProgramCache]: Analyzing trace with hash -271735732, now seen corresponding path program 3 times [2023-12-16 04:50:08,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:08,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517306318] [2023-12-16 04:50:08,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:08,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:08,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:08,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517306318] [2023-12-16 04:50:08,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517306318] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:08,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913976192] [2023-12-16 04:50:08,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:50:08,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:08,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:08,184 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) [2023-12-16 04:50:08,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:50:08,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 04:50:08,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:08,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-16 04:50:08,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:08,291 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:08,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913976192] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:08,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:08,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-12-16 04:50:08,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132012242] [2023-12-16 04:50:08,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:08,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:50:08,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:08,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:50:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:50:08,349 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:08,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:08,399 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2023-12-16 04:50:08,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:50:08,399 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 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 14 [2023-12-16 04:50:08,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:08,399 INFO L225 Difference]: With dead ends: 29 [2023-12-16 04:50:08,400 INFO L226 Difference]: Without dead ends: 16 [2023-12-16 04:50:08,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:50:08,400 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:08,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-12-16 04:50:08,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-12-16 04:50:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:08,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-12-16 04:50:08,409 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2023-12-16 04:50:08,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:08,410 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-12-16 04:50:08,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:08,410 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-12-16 04:50:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-16 04:50:08,410 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:08,410 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-12-16 04:50:08,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-16 04:50:08,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:08,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:08,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1672117169, now seen corresponding path program 4 times [2023-12-16 04:50:08,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:08,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736817623] [2023-12-16 04:50:08,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:08,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736817623] [2023-12-16 04:50:08,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736817623] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:08,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394048578] [2023-12-16 04:50:08,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:50:08,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:08,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:08,691 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) [2023-12-16 04:50:08,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:50:08,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:50:08,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:08,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 04:50:08,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:08,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394048578] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:08,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:08,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2023-12-16 04:50:08,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276766896] [2023-12-16 04:50:08,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:08,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-16 04:50:08,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:08,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-16 04:50:08,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-16 04:50:08,783 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:08,823 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-12-16 04:50:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-16 04:50:08,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 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 15 [2023-12-16 04:50:08,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:08,824 INFO L225 Difference]: With dead ends: 27 [2023-12-16 04:50:08,824 INFO L226 Difference]: Without dead ends: 25 [2023-12-16 04:50:08,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:50:08,825 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:08,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:08,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-12-16 04:50:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2023-12-16 04:50:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-12-16 04:50:08,828 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2023-12-16 04:50:08,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:08,828 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-12-16 04:50:08,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:08,828 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-12-16 04:50:08,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 04:50:08,829 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:08,829 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2023-12-16 04:50:08,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:09,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:09,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:09,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1016702952, now seen corresponding path program 5 times [2023-12-16 04:50:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:09,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728386355] [2023-12-16 04:50:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:09,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:09,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728386355] [2023-12-16 04:50:09,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728386355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:09,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309095838] [2023-12-16 04:50:09,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:50:09,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:09,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:09,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:09,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:50:09,142 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-16 04:50:09,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:09,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-16 04:50:09,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:09,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:09,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309095838] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:09,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:09,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-16 04:50:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287390043] [2023-12-16 04:50:09,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:09,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 04:50:09,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 04:50:09,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:50:09,261 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:09,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:09,319 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-12-16 04:50:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:50:09,320 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 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 18 [2023-12-16 04:50:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:09,320 INFO L225 Difference]: With dead ends: 36 [2023-12-16 04:50:09,320 INFO L226 Difference]: Without dead ends: 20 [2023-12-16 04:50:09,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2023-12-16 04:50:09,321 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:09,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 49 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:09,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-12-16 04:50:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-12-16 04:50:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:09,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-12-16 04:50:09,323 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2023-12-16 04:50:09,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:09,323 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-12-16 04:50:09,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:09,324 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-12-16 04:50:09,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-16 04:50:09,324 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:09,324 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2023-12-16 04:50:09,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 04:50:09,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:09,529 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:09,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:09,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1036141773, now seen corresponding path program 6 times [2023-12-16 04:50:09,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:09,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349037953] [2023-12-16 04:50:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:09,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:09,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:09,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349037953] [2023-12-16 04:50:09,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349037953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:09,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869631274] [2023-12-16 04:50:09,588 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 04:50:09,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:09,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:09,589 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:09,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:50:09,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-16 04:50:09,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:09,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:50:09,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:09,645 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:09,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:09,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869631274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:09,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:09,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2023-12-16 04:50:09,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699942179] [2023-12-16 04:50:09,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:09,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-16 04:50:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:09,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-16 04:50:09,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-16 04:50:09,686 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2023-12-16 04:50:09,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:09,732 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-12-16 04:50:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:50:09,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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 19 [2023-12-16 04:50:09,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:09,733 INFO L225 Difference]: With dead ends: 31 [2023-12-16 04:50:09,733 INFO L226 Difference]: Without dead ends: 29 [2023-12-16 04:50:09,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:50:09,734 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:09,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 22 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:09,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-12-16 04:50:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2023-12-16 04:50:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 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) [2023-12-16 04:50:09,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-12-16 04:50:09,736 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2023-12-16 04:50:09,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:09,736 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-12-16 04:50:09,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 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) [2023-12-16 04:50:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-12-16 04:50:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-16 04:50:09,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:09,750 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-12-16 04:50:09,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:09,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:09,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:09,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:09,955 INFO L85 PathProgramCache]: Analyzing trace with hash -225576628, now seen corresponding path program 7 times [2023-12-16 04:50:09,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:09,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968534282] [2023-12-16 04:50:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:10,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:10,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968534282] [2023-12-16 04:50:10,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968534282] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:10,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792223457] [2023-12-16 04:50:10,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 04:50:10,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:10,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:10,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:10,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:50:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:10,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-16 04:50:10,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:10,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:10,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792223457] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:10,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:10,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2023-12-16 04:50:10,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682144506] [2023-12-16 04:50:10,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:10,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 04:50:10,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:10,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 04:50:10,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:50:10,252 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:10,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:10,336 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2023-12-16 04:50:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-16 04:50:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 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 [2023-12-16 04:50:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:10,337 INFO L225 Difference]: With dead ends: 43 [2023-12-16 04:50:10,337 INFO L226 Difference]: Without dead ends: 24 [2023-12-16 04:50:10,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2023-12-16 04:50:10,338 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 56 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 [2023-12-16 04:50:10,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 56 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:10,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-16 04:50:10,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-16 04:50:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 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) [2023-12-16 04:50:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-12-16 04:50:10,340 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2023-12-16 04:50:10,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:10,340 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-12-16 04:50:10,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:10,340 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-12-16 04:50:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 04:50:10,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:10,341 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2023-12-16 04:50:10,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:10,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-16 04:50:10,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:10,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:10,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1029465167, now seen corresponding path program 8 times [2023-12-16 04:50:10,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:10,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530285455] [2023-12-16 04:50:10,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:10,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:10,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:10,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530285455] [2023-12-16 04:50:10,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530285455] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:10,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350074713] [2023-12-16 04:50:10,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:50:10,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:10,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:10,612 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:10,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:50:10,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:50:10,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:10,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 04:50:10,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:10,673 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:10,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:10,720 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:10,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350074713] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:10,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:10,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2023-12-16 04:50:10,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474140041] [2023-12-16 04:50:10,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:10,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-16 04:50:10,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:10,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-16 04:50:10,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-16 04:50:10,721 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:10,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:10,774 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2023-12-16 04:50:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-16 04:50:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 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 [2023-12-16 04:50:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:10,775 INFO L225 Difference]: With dead ends: 35 [2023-12-16 04:50:10,775 INFO L226 Difference]: Without dead ends: 33 [2023-12-16 04:50:10,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 10 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:50:10,776 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:10,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:10,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-16 04:50:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2023-12-16 04:50:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:10,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2023-12-16 04:50:10,778 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2023-12-16 04:50:10,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:10,778 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2023-12-16 04:50:10,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2023-12-16 04:50:10,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-16 04:50:10,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:10,779 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2023-12-16 04:50:10,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-16 04:50:10,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 04:50:10,984 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:10,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:10,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1569490920, now seen corresponding path program 9 times [2023-12-16 04:50:10,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:10,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579933138] [2023-12-16 04:50:10,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:10,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:11,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:11,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579933138] [2023-12-16 04:50:11,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579933138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:11,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936156359] [2023-12-16 04:50:11,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:50:11,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:11,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:11,132 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:11,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:50:11,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-12-16 04:50:11,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:11,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-16 04:50:11,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:11,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:11,382 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:11,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936156359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:11,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:11,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2023-12-16 04:50:11,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23807337] [2023-12-16 04:50:11,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:11,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 04:50:11,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:11,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 04:50:11,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:50:11,384 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:11,480 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2023-12-16 04:50:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 04:50:11,480 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 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 [2023-12-16 04:50:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:11,481 INFO L225 Difference]: With dead ends: 50 [2023-12-16 04:50:11,481 INFO L226 Difference]: Without dead ends: 28 [2023-12-16 04:50:11,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=659, Unknown=0, NotChecked=0, Total=870 [2023-12-16 04:50:11,482 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:11,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 79 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:11,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-12-16 04:50:11,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-12-16 04:50:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-12-16 04:50:11,489 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2023-12-16 04:50:11,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:11,489 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-12-16 04:50:11,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-12-16 04:50:11,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-16 04:50:11,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:11,489 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2023-12-16 04:50:11,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:11,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-16 04:50:11,694 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:11,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash 194015181, now seen corresponding path program 10 times [2023-12-16 04:50:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:11,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729989460] [2023-12-16 04:50:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:11,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 15 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:11,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729989460] [2023-12-16 04:50:11,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729989460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:11,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939157999] [2023-12-16 04:50:11,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:50:11,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:11,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:11,772 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:11,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:50:11,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:50:11,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:11,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 04:50:11,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:11,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:11,928 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:11,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939157999] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:11,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:11,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-12-16 04:50:11,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48016771] [2023-12-16 04:50:11,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:11,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:50:11,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:11,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:50:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:50:11,929 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:11,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:11,988 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2023-12-16 04:50:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-16 04:50:11,989 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 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 27 [2023-12-16 04:50:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:11,989 INFO L225 Difference]: With dead ends: 39 [2023-12-16 04:50:11,989 INFO L226 Difference]: Without dead ends: 37 [2023-12-16 04:50:11,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 12 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2023-12-16 04:50:11,990 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:11,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 17 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:11,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-12-16 04:50:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2023-12-16 04:50:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2023-12-16 04:50:11,992 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2023-12-16 04:50:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:11,992 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2023-12-16 04:50:11,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:11,992 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2023-12-16 04:50:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-16 04:50:11,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:11,993 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2023-12-16 04:50:12,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:12,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 04:50:12,197 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:12,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:12,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1114902964, now seen corresponding path program 11 times [2023-12-16 04:50:12,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:12,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62794911] [2023-12-16 04:50:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:12,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:12,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62794911] [2023-12-16 04:50:12,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62794911] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639440589] [2023-12-16 04:50:12,334 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:50:12,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:12,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:12,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:12,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-16 04:50:12,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-16 04:50:12,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:12,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-16 04:50:12,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:12,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:12,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639440589] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:12,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:12,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2023-12-16 04:50:12,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16871463] [2023-12-16 04:50:12,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:12,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 04:50:12,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:12,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 04:50:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2023-12-16 04:50:12,629 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:12,732 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2023-12-16 04:50:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 04:50:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-12-16 04:50:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:12,732 INFO L225 Difference]: With dead ends: 57 [2023-12-16 04:50:12,732 INFO L226 Difference]: Without dead ends: 32 [2023-12-16 04:50:12,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 37 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=268, Invalid=854, Unknown=0, NotChecked=0, Total=1122 [2023-12-16 04:50:12,733 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:12,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 72 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:12,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-16 04:50:12,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-12-16 04:50:12,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:12,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2023-12-16 04:50:12,736 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2023-12-16 04:50:12,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:12,736 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2023-12-16 04:50:12,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 25 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:12,736 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2023-12-16 04:50:12,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-16 04:50:12,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:12,736 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1] [2023-12-16 04:50:12,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-16 04:50:12,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 04:50:12,941 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:12,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:12,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1977572273, now seen corresponding path program 12 times [2023-12-16 04:50:12,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:12,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336360983] [2023-12-16 04:50:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:12,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:13,034 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336360983] [2023-12-16 04:50:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336360983] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:13,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8862454] [2023-12-16 04:50:13,035 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 04:50:13,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:13,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:13,036 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:13,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-16 04:50:13,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-12-16 04:50:13,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:13,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 04:50:13,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:13,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:13,224 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:13,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8862454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:13,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:13,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-12-16 04:50:13,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105903423] [2023-12-16 04:50:13,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:13,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-16 04:50:13,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:13,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-16 04:50:13,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:50:13,227 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:13,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:13,306 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2023-12-16 04:50:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-16 04:50:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 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 31 [2023-12-16 04:50:13,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:13,308 INFO L225 Difference]: With dead ends: 43 [2023-12-16 04:50:13,308 INFO L226 Difference]: Without dead ends: 41 [2023-12-16 04:50:13,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 14 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=272, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:50:13,309 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:13,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 23 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-12-16 04:50:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2023-12-16 04:50:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2023-12-16 04:50:13,313 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2023-12-16 04:50:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:13,313 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2023-12-16 04:50:13,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2023-12-16 04:50:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-16 04:50:13,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:13,314 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2023-12-16 04:50:13,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:13,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-16 04:50:13,523 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:13,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash -205994008, now seen corresponding path program 13 times [2023-12-16 04:50:13,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:13,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910605860] [2023-12-16 04:50:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:13,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:13,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:13,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:13,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910605860] [2023-12-16 04:50:13,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910605860] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:13,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861250608] [2023-12-16 04:50:13,713 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 04:50:13,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:13,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:13,714 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:13,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-16 04:50:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:13,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-16 04:50:13,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:13,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:14,024 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:14,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861250608] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:14,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:14,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2023-12-16 04:50:14,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784467347] [2023-12-16 04:50:14,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:14,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 04:50:14,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 04:50:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2023-12-16 04:50:14,026 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:14,143 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2023-12-16 04:50:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-16 04:50:14,143 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-16 04:50:14,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:14,143 INFO L225 Difference]: With dead ends: 64 [2023-12-16 04:50:14,143 INFO L226 Difference]: Without dead ends: 36 [2023-12-16 04:50:14,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 42 SyntacticMatches, 15 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 04:50:14,144 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:14,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-16 04:50:14,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-16 04:50:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:14,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2023-12-16 04:50:14,146 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2023-12-16 04:50:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:14,147 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2023-12-16 04:50:14,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.1724137931034484) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:14,147 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2023-12-16 04:50:14,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-16 04:50:14,147 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:14,147 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1] [2023-12-16 04:50:14,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-16 04:50:14,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:14,352 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:14,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:14,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1344076493, now seen corresponding path program 14 times [2023-12-16 04:50:14,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:14,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981729715] [2023-12-16 04:50:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:14,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:14,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981729715] [2023-12-16 04:50:14,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981729715] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:14,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898170988] [2023-12-16 04:50:14,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:50:14,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:14,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:14,470 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:14,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-16 04:50:14,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:50:14,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:14,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 04:50:14,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:14,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:14,632 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:14,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898170988] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:14,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:14,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2023-12-16 04:50:14,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047712887] [2023-12-16 04:50:14,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:14,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:50:14,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:14,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:50:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:50:14,634 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:14,710 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2023-12-16 04:50:14,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-16 04:50:14,710 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 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 35 [2023-12-16 04:50:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:14,710 INFO L225 Difference]: With dead ends: 47 [2023-12-16 04:50:14,710 INFO L226 Difference]: Without dead ends: 45 [2023-12-16 04:50:14,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 16 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:50:14,711 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:14,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:14,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-16 04:50:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2023-12-16 04:50:14,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2023-12-16 04:50:14,713 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2023-12-16 04:50:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:14,713 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2023-12-16 04:50:14,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2023-12-16 04:50:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-16 04:50:14,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:14,714 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1] [2023-12-16 04:50:14,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-16 04:50:14,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 04:50:14,919 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:14,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:14,919 INFO L85 PathProgramCache]: Analyzing trace with hash -592477364, now seen corresponding path program 15 times [2023-12-16 04:50:14,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:14,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868465510] [2023-12-16 04:50:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:14,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:15,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868465510] [2023-12-16 04:50:15,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868465510] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:15,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828659334] [2023-12-16 04:50:15,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:50:15,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:15,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:15,129 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:15,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-16 04:50:15,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-12-16 04:50:15,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:15,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-16 04:50:15,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:15,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828659334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:15,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:15,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2023-12-16 04:50:15,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647665492] [2023-12-16 04:50:15,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 04:50:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 04:50:15,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2023-12-16 04:50:15,501 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 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) [2023-12-16 04:50:15,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:15,652 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2023-12-16 04:50:15,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-16 04:50:15,653 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 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 38 [2023-12-16 04:50:15,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:15,653 INFO L225 Difference]: With dead ends: 71 [2023-12-16 04:50:15,653 INFO L226 Difference]: Without dead ends: 40 [2023-12-16 04:50:15,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 17 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=403, Invalid=1319, Unknown=0, NotChecked=0, Total=1722 [2023-12-16 04:50:15,654 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:15,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 110 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:15,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-16 04:50:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-16 04:50:15,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2023-12-16 04:50:15,662 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2023-12-16 04:50:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:15,662 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2023-12-16 04:50:15,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 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) [2023-12-16 04:50:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2023-12-16 04:50:15,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-16 04:50:15,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:15,664 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1] [2023-12-16 04:50:15,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-16 04:50:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-16 04:50:15,872 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:15,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash 876985265, now seen corresponding path program 16 times [2023-12-16 04:50:15,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:15,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730546184] [2023-12-16 04:50:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:15,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:15,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:15,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730546184] [2023-12-16 04:50:15,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730546184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:15,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181713274] [2023-12-16 04:50:15,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:50:15,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:15,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:15,990 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:15,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-16 04:50:16,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:50:16,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:16,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 04:50:16,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:16,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:16,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181713274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:16,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:16,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2023-12-16 04:50:16,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688716690] [2023-12-16 04:50:16,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:16,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-16 04:50:16,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:16,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-16 04:50:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2023-12-16 04:50:16,307 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:16,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:16,443 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2023-12-16 04:50:16,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-16 04:50:16,443 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 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 39 [2023-12-16 04:50:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:16,443 INFO L225 Difference]: With dead ends: 51 [2023-12-16 04:50:16,443 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 04:50:16,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 65 SyntacticMatches, 18 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2023-12-16 04:50:16,444 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 26 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:16,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 21 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:16,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 04:50:16,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2023-12-16 04:50:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:16,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2023-12-16 04:50:16,446 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 39 [2023-12-16 04:50:16,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:16,446 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2023-12-16 04:50:16,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:16,447 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2023-12-16 04:50:16,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-16 04:50:16,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:16,447 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1] [2023-12-16 04:50:16,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:16,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 04:50:16,652 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:16,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash -13211672, now seen corresponding path program 17 times [2023-12-16 04:50:16,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:16,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484778917] [2023-12-16 04:50:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:16,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:16,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:16,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484778917] [2023-12-16 04:50:16,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484778917] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:16,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178074820] [2023-12-16 04:50:16,975 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:50:16,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:16,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:16,977 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:16,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-16 04:50:17,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-12-16 04:50:17,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:17,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-16 04:50:17,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:17,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:17,459 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:17,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178074820] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:17,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:17,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 34 [2023-12-16 04:50:17,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216852345] [2023-12-16 04:50:17,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:17,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-16 04:50:17,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:17,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-16 04:50:17,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 04:50:17,461 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 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) [2023-12-16 04:50:17,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:17,615 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2023-12-16 04:50:17,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-16 04:50:17,615 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 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 42 [2023-12-16 04:50:17,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:17,615 INFO L225 Difference]: With dead ends: 78 [2023-12-16 04:50:17,615 INFO L226 Difference]: Without dead ends: 44 [2023-12-16 04:50:17,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 52 SyntacticMatches, 19 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=481, Invalid=1589, Unknown=0, NotChecked=0, Total=2070 [2023-12-16 04:50:17,616 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:17,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:17,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-12-16 04:50:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-12-16 04:50:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2023-12-16 04:50:17,619 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2023-12-16 04:50:17,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:17,619 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2023-12-16 04:50:17,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2) internal successors, (77), 34 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) [2023-12-16 04:50:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2023-12-16 04:50:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-16 04:50:17,619 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:17,619 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1] [2023-12-16 04:50:17,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-16 04:50:17,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:17,827 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:17,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1233132083, now seen corresponding path program 18 times [2023-12-16 04:50:17,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:17,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803993747] [2023-12-16 04:50:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:17,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:18,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:18,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803993747] [2023-12-16 04:50:18,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803993747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:18,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496893363] [2023-12-16 04:50:18,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 04:50:18,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:18,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:18,004 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:18,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-16 04:50:18,053 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-12-16 04:50:18,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:18,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 04:50:18,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:18,115 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:18,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:18,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496893363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:18,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:18,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2023-12-16 04:50:18,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063363567] [2023-12-16 04:50:18,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:18,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 04:50:18,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 04:50:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:50:18,266 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:18,379 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2023-12-16 04:50:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-16 04:50:18,380 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 43 [2023-12-16 04:50:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:18,380 INFO L225 Difference]: With dead ends: 55 [2023-12-16 04:50:18,380 INFO L226 Difference]: Without dead ends: 53 [2023-12-16 04:50:18,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 20 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=250, Invalid=452, Unknown=0, NotChecked=0, Total=702 [2023-12-16 04:50:18,381 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:18,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:50:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-16 04:50:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2023-12-16 04:50:18,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:18,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2023-12-16 04:50:18,383 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 43 [2023-12-16 04:50:18,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:18,383 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2023-12-16 04:50:18,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2023-12-16 04:50:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-16 04:50:18,384 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:18,384 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-12-16 04:50:18,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-16 04:50:18,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:18,589 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:18,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:18,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1377781684, now seen corresponding path program 19 times [2023-12-16 04:50:18,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:18,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522669546] [2023-12-16 04:50:18,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:18,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:18,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:18,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522669546] [2023-12-16 04:50:18,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522669546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:18,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779662103] [2023-12-16 04:50:18,863 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 04:50:18,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:18,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:18,864 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:18,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-16 04:50:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:18,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-16 04:50:18,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:19,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779662103] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:19,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:19,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2023-12-16 04:50:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333086584] [2023-12-16 04:50:19,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:19,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-16 04:50:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:19,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-16 04:50:19,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2023-12-16 04:50:19,402 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:19,606 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2023-12-16 04:50:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-16 04:50:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 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 46 [2023-12-16 04:50:19,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:19,606 INFO L225 Difference]: With dead ends: 85 [2023-12-16 04:50:19,606 INFO L226 Difference]: Without dead ends: 48 [2023-12-16 04:50:19,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 57 SyntacticMatches, 21 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=566, Invalid=1884, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 04:50:19,607 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:19,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-16 04:50:19,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-12-16 04:50:19,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2023-12-16 04:50:19,610 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2023-12-16 04:50:19,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:19,610 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2023-12-16 04:50:19,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.210526315789474) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:19,610 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2023-12-16 04:50:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-16 04:50:19,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:19,610 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2023-12-16 04:50:19,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:19,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-16 04:50:19,820 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:19,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:19,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2034320463, now seen corresponding path program 20 times [2023-12-16 04:50:19,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:19,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981500330] [2023-12-16 04:50:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:19,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 55 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:19,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981500330] [2023-12-16 04:50:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981500330] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:19,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085350090] [2023-12-16 04:50:19,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:50:19,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:19,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:19,998 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:19,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-16 04:50:20,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:50:20,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:20,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-16 04:50:20,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:20,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:20,339 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085350090] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:20,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:20,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2023-12-16 04:50:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522429323] [2023-12-16 04:50:20,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:20,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 04:50:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 04:50:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:50:20,340 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:20,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:20,483 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2023-12-16 04:50:20,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-16 04:50:20,485 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 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 47 [2023-12-16 04:50:20,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:20,485 INFO L225 Difference]: With dead ends: 59 [2023-12-16 04:50:20,485 INFO L226 Difference]: Without dead ends: 57 [2023-12-16 04:50:20,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 79 SyntacticMatches, 22 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2023-12-16 04:50:20,486 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 28 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:20,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:20,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-16 04:50:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2023-12-16 04:50:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2023-12-16 04:50:20,488 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2023-12-16 04:50:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:20,488 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2023-12-16 04:50:20,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2023-12-16 04:50:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-16 04:50:20,489 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:20,489 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1] [2023-12-16 04:50:20,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:20,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-16 04:50:20,698 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:20,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1847420904, now seen corresponding path program 21 times [2023-12-16 04:50:20,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:20,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314112052] [2023-12-16 04:50:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:20,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:20,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:20,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314112052] [2023-12-16 04:50:20,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314112052] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:20,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372389023] [2023-12-16 04:50:20,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:50:20,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:20,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:20,999 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:21,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-16 04:50:21,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-12-16 04:50:21,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:21,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 04:50:21,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:21,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:21,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372389023] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:21,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:21,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 40 [2023-12-16 04:50:21,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592649082] [2023-12-16 04:50:21,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:21,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-16 04:50:21,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:21,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-16 04:50:21,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 04:50:21,557 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:21,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:21,759 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2023-12-16 04:50:21,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-16 04:50:21,759 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-16 04:50:21,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:21,759 INFO L225 Difference]: With dead ends: 92 [2023-12-16 04:50:21,759 INFO L226 Difference]: Without dead ends: 52 [2023-12-16 04:50:21,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 62 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=658, Invalid=2204, Unknown=0, NotChecked=0, Total=2862 [2023-12-16 04:50:21,760 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:21,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-16 04:50:21,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-16 04:50:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2023-12-16 04:50:21,781 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2023-12-16 04:50:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:21,781 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2023-12-16 04:50:21,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2023-12-16 04:50:21,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-16 04:50:21,782 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:21,782 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1] [2023-12-16 04:50:21,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:21,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:21,990 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:21,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:21,991 INFO L85 PathProgramCache]: Analyzing trace with hash -674156339, now seen corresponding path program 22 times [2023-12-16 04:50:21,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:21,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814830168] [2023-12-16 04:50:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:22,196 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 66 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:22,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:22,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814830168] [2023-12-16 04:50:22,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814830168] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:22,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666267811] [2023-12-16 04:50:22,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:50:22,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:22,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:22,200 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:22,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-16 04:50:22,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:50:22,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:22,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 04:50:22,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:22,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:22,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666267811] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:22,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:22,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2023-12-16 04:50:22,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877051058] [2023-12-16 04:50:22,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:22,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 04:50:22,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:22,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 04:50:22,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:50:22,568 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:22,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:22,691 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2023-12-16 04:50:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-16 04:50:22,692 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 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 51 [2023-12-16 04:50:22,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:22,692 INFO L225 Difference]: With dead ends: 63 [2023-12-16 04:50:22,692 INFO L226 Difference]: Without dead ends: 61 [2023-12-16 04:50:22,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 86 SyntacticMatches, 24 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2023-12-16 04:50:22,693 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:22,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 21 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-16 04:50:22,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2023-12-16 04:50:22,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:22,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2023-12-16 04:50:22,695 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2023-12-16 04:50:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:22,695 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2023-12-16 04:50:22,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2023-12-16 04:50:22,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-16 04:50:22,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:22,696 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1] [2023-12-16 04:50:22,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:22,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:22,903 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:22,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash -519598772, now seen corresponding path program 23 times [2023-12-16 04:50:22,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:22,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140163342] [2023-12-16 04:50:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:23,267 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 188 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:23,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:23,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140163342] [2023-12-16 04:50:23,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140163342] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:23,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281479024] [2023-12-16 04:50:23,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:50:23,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:23,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:23,317 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:23,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-16 04:50:23,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2023-12-16 04:50:23,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:23,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-16 04:50:23,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:23,709 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:23,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:23,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281479024] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:23,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:23,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 43 [2023-12-16 04:50:23,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605492964] [2023-12-16 04:50:23,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:23,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-12-16 04:50:23,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:23,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-12-16 04:50:23,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2023-12-16 04:50:23,961 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:24,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:24,207 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2023-12-16 04:50:24,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-16 04:50:24,207 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 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 54 [2023-12-16 04:50:24,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:24,207 INFO L225 Difference]: With dead ends: 99 [2023-12-16 04:50:24,208 INFO L226 Difference]: Without dead ends: 56 [2023-12-16 04:50:24,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 67 SyntacticMatches, 25 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=757, Invalid=2549, Unknown=0, NotChecked=0, Total=3306 [2023-12-16 04:50:24,209 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:24,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 127 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:24,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-16 04:50:24,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-12-16 04:50:24,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2023-12-16 04:50:24,212 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2023-12-16 04:50:24,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:24,212 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2023-12-16 04:50:24,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.227272727272727) internal successors, (98), 43 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:24,212 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2023-12-16 04:50:24,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 04:50:24,212 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:24,212 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1] [2023-12-16 04:50:24,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:24,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-16 04:50:24,418 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:24,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1211259825, now seen corresponding path program 24 times [2023-12-16 04:50:24,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:24,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974600211] [2023-12-16 04:50:24,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:24,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:24,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974600211] [2023-12-16 04:50:24,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974600211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:24,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718628568] [2023-12-16 04:50:24,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 04:50:24,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:24,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:24,650 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:24,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-16 04:50:24,700 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2023-12-16 04:50:24,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:24,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-16 04:50:24,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:24,765 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718628568] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:24,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:24,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 18 [2023-12-16 04:50:24,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896303398] [2023-12-16 04:50:24,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:24,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 04:50:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:24,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 04:50:24,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2023-12-16 04:50:24,975 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:25,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:25,119 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2023-12-16 04:50:25,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-16 04:50:25,120 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 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 55 [2023-12-16 04:50:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:25,120 INFO L225 Difference]: With dead ends: 67 [2023-12-16 04:50:25,120 INFO L226 Difference]: Without dead ends: 65 [2023-12-16 04:50:25,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 93 SyntacticMatches, 26 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=379, Invalid=677, Unknown=0, NotChecked=0, Total=1056 [2023-12-16 04:50:25,121 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:25,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-12-16 04:50:25,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2023-12-16 04:50:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:25,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2023-12-16 04:50:25,124 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2023-12-16 04:50:25,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:25,124 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2023-12-16 04:50:25,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:25,124 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2023-12-16 04:50:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-16 04:50:25,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:25,125 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1] [2023-12-16 04:50:25,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:25,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-16 04:50:25,325 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:25,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1668954136, now seen corresponding path program 25 times [2023-12-16 04:50:25,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:25,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318850985] [2023-12-16 04:50:25,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:25,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 223 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:25,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318850985] [2023-12-16 04:50:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318850985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863729497] [2023-12-16 04:50:25,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 04:50:25,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:25,631 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:25,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-16 04:50:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:25,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-16 04:50:25,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:26,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:26,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863729497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:26,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:26,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2023-12-16 04:50:26,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699088027] [2023-12-16 04:50:26,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:26,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-16 04:50:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:26,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-16 04:50:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 04:50:26,485 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:26,715 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2023-12-16 04:50:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-16 04:50:26,716 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-16 04:50:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:26,716 INFO L225 Difference]: With dead ends: 106 [2023-12-16 04:50:26,716 INFO L226 Difference]: Without dead ends: 60 [2023-12-16 04:50:26,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 72 SyntacticMatches, 27 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=863, Invalid=2919, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 04:50:26,719 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:26,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-16 04:50:26,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-16 04:50:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2023-12-16 04:50:26,723 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2023-12-16 04:50:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:26,723 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2023-12-16 04:50:26,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.234042553191489) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2023-12-16 04:50:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-16 04:50:26,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:26,725 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1] [2023-12-16 04:50:26,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:26,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-16 04:50:26,930 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:26,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1154950195, now seen corresponding path program 26 times [2023-12-16 04:50:26,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:26,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256161971] [2023-12-16 04:50:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:26,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 91 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:27,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:27,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256161971] [2023-12-16 04:50:27,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256161971] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:27,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14472403] [2023-12-16 04:50:27,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:50:27,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:27,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:27,185 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:27,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-16 04:50:27,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:50:27,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:27,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-16 04:50:27,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:27,298 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:27,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14472403] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:27,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:27,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2023-12-16 04:50:27,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636051278] [2023-12-16 04:50:27,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:27,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-16 04:50:27,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:27,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-16 04:50:27,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:50:27,517 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:27,680 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2023-12-16 04:50:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-16 04:50:27,681 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-16 04:50:27,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:27,681 INFO L225 Difference]: With dead ends: 71 [2023-12-16 04:50:27,681 INFO L226 Difference]: Without dead ends: 69 [2023-12-16 04:50:27,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 100 SyntacticMatches, 28 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=428, Invalid=762, Unknown=0, NotChecked=0, Total=1190 [2023-12-16 04:50:27,682 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 20 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:27,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 20 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:27,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-16 04:50:27,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2023-12-16 04:50:27,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:27,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2023-12-16 04:50:27,685 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 59 [2023-12-16 04:50:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:27,685 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2023-12-16 04:50:27,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2023-12-16 04:50:27,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-16 04:50:27,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:27,685 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1] [2023-12-16 04:50:27,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:27,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-16 04:50:27,904 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:27,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash -133430708, now seen corresponding path program 27 times [2023-12-16 04:50:27,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:27,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137275894] [2023-12-16 04:50:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:27,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 261 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:28,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137275894] [2023-12-16 04:50:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137275894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240999237] [2023-12-16 04:50:28,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:50:28,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:28,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:28,375 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:28,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-16 04:50:28,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-12-16 04:50:28,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:28,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-16 04:50:28,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:28,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:29,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240999237] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:29,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:29,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2023-12-16 04:50:29,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995291124] [2023-12-16 04:50:29,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:29,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-16 04:50:29,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:29,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-16 04:50:29,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2023-12-16 04:50:29,261 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 50 states, 50 states have (on average 2.24) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:29,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:29,560 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2023-12-16 04:50:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-16 04:50:29,561 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.24) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 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 62 [2023-12-16 04:50:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:29,561 INFO L225 Difference]: With dead ends: 113 [2023-12-16 04:50:29,561 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 04:50:29,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 77 SyntacticMatches, 29 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1779 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=976, Invalid=3314, Unknown=0, NotChecked=0, Total=4290 [2023-12-16 04:50:29,562 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:29,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 04:50:29,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-12-16 04:50:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:29,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2023-12-16 04:50:29,565 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2023-12-16 04:50:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:29,565 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2023-12-16 04:50:29,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.24) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:29,566 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2023-12-16 04:50:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-16 04:50:29,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:29,566 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1] [2023-12-16 04:50:29,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:29,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-16 04:50:29,771 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:29,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash 629709745, now seen corresponding path program 28 times [2023-12-16 04:50:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:29,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884835291] [2023-12-16 04:50:29,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:29,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 105 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:30,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:30,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884835291] [2023-12-16 04:50:30,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884835291] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:30,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841586345] [2023-12-16 04:50:30,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:50:30,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:30,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:30,037 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:30,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-16 04:50:30,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:50:30,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:30,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 04:50:30,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:30,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:30,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841586345] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:30,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:30,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2023-12-16 04:50:30,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424662209] [2023-12-16 04:50:30,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:30,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 04:50:30,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:30,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 04:50:30,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=259, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:50:30,408 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:30,582 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2023-12-16 04:50:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-16 04:50:30,582 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-16 04:50:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:30,583 INFO L225 Difference]: With dead ends: 75 [2023-12-16 04:50:30,583 INFO L226 Difference]: Without dead ends: 73 [2023-12-16 04:50:30,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 107 SyntacticMatches, 30 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=480, Invalid=852, Unknown=0, NotChecked=0, Total=1332 [2023-12-16 04:50:30,584 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:30,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:30,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-12-16 04:50:30,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2023-12-16 04:50:30,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2023-12-16 04:50:30,587 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2023-12-16 04:50:30,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:30,587 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2023-12-16 04:50:30,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:30,587 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2023-12-16 04:50:30,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 04:50:30,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:30,588 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2023-12-16 04:50:30,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:30,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:30,793 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:30,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:30,793 INFO L85 PathProgramCache]: Analyzing trace with hash -729315352, now seen corresponding path program 29 times [2023-12-16 04:50:30,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:30,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440460939] [2023-12-16 04:50:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:30,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 302 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:31,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:31,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440460939] [2023-12-16 04:50:31,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440460939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:31,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752732660] [2023-12-16 04:50:31,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:50:31,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:31,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:31,240 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:31,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-16 04:50:31,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-12-16 04:50:31,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:31,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-16 04:50:31,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:31,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:32,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752732660] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:32,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:32,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 52 [2023-12-16 04:50:32,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899239708] [2023-12-16 04:50:32,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:32,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-12-16 04:50:32,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:32,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-12-16 04:50:32,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2023-12-16 04:50:32,172 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:32,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:32,502 INFO L93 Difference]: Finished difference Result 120 states and 122 transitions. [2023-12-16 04:50:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-16 04:50:32,502 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 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 66 [2023-12-16 04:50:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:32,502 INFO L225 Difference]: With dead ends: 120 [2023-12-16 04:50:32,502 INFO L226 Difference]: Without dead ends: 68 [2023-12-16 04:50:32,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 82 SyntacticMatches, 31 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1096, Invalid=3734, Unknown=0, NotChecked=0, Total=4830 [2023-12-16 04:50:32,504 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:32,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 182 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:32,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-16 04:50:32,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-12-16 04:50:32,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:32,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2023-12-16 04:50:32,507 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2023-12-16 04:50:32,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:32,507 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2023-12-16 04:50:32,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2452830188679247) internal successors, (119), 52 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:32,508 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2023-12-16 04:50:32,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-16 04:50:32,508 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:32,508 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1] [2023-12-16 04:50:32,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:32,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-16 04:50:32,714 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:32,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1436477133, now seen corresponding path program 30 times [2023-12-16 04:50:32,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:32,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340745514] [2023-12-16 04:50:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:32,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 120 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:32,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:32,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340745514] [2023-12-16 04:50:32,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340745514] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:32,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012286612] [2023-12-16 04:50:32,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 04:50:32,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:32,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:32,982 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:33,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-16 04:50:33,042 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2023-12-16 04:50:33,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:33,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 04:50:33,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:33,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:33,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012286612] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:33,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:33,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 21 [2023-12-16 04:50:33,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345920532] [2023-12-16 04:50:33,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:33,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-16 04:50:33,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:33,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-16 04:50:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2023-12-16 04:50:33,392 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 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) [2023-12-16 04:50:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:33,582 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2023-12-16 04:50:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-16 04:50:33,582 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 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 67 [2023-12-16 04:50:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:33,583 INFO L225 Difference]: With dead ends: 79 [2023-12-16 04:50:33,583 INFO L226 Difference]: Without dead ends: 77 [2023-12-16 04:50:33,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 114 SyntacticMatches, 32 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=535, Invalid=947, Unknown=0, NotChecked=0, Total=1482 [2023-12-16 04:50:33,583 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:33,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-16 04:50:33,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2023-12-16 04:50:33,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 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) [2023-12-16 04:50:33,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2023-12-16 04:50:33,586 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 67 [2023-12-16 04:50:33,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:33,587 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2023-12-16 04:50:33,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 21 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) [2023-12-16 04:50:33,587 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2023-12-16 04:50:33,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-16 04:50:33,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:33,587 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 1, 1, 1, 1, 1] [2023-12-16 04:50:33,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-12-16 04:50:33,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:33,792 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:33,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:33,793 INFO L85 PathProgramCache]: Analyzing trace with hash -959047860, now seen corresponding path program 31 times [2023-12-16 04:50:33,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:33,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990342355] [2023-12-16 04:50:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:33,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:34,288 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 346 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:34,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:34,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990342355] [2023-12-16 04:50:34,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990342355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:34,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599896505] [2023-12-16 04:50:34,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 04:50:34,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:34,290 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:34,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-16 04:50:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:34,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-16 04:50:34,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:34,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:35,287 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:35,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599896505] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:35,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:35,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 55 [2023-12-16 04:50:35,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161404438] [2023-12-16 04:50:35,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:35,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-16 04:50:35,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:35,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-16 04:50:35,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2023-12-16 04:50:35,290 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 56 states, 56 states have (on average 2.25) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:35,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:35,611 INFO L93 Difference]: Finished difference Result 127 states and 129 transitions. [2023-12-16 04:50:35,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-16 04:50:35,611 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.25) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 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 [2023-12-16 04:50:35,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:35,611 INFO L225 Difference]: With dead ends: 127 [2023-12-16 04:50:35,611 INFO L226 Difference]: Without dead ends: 72 [2023-12-16 04:50:35,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 87 SyntacticMatches, 33 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2257 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1223, Invalid=4179, Unknown=0, NotChecked=0, Total=5402 [2023-12-16 04:50:35,614 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:35,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 174 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:35,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-12-16 04:50:35,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2023-12-16 04:50:35,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 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) [2023-12-16 04:50:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2023-12-16 04:50:35,619 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 70 [2023-12-16 04:50:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:35,619 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2023-12-16 04:50:35,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.25) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2023-12-16 04:50:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 04:50:35,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:35,623 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1] [2023-12-16 04:50:35,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-16 04:50:35,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:35,829 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:35,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:35,829 INFO L85 PathProgramCache]: Analyzing trace with hash 497646513, now seen corresponding path program 32 times [2023-12-16 04:50:35,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:35,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062114605] [2023-12-16 04:50:35,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:35,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 136 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062114605] [2023-12-16 04:50:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062114605] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800582510] [2023-12-16 04:50:36,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:50:36,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:36,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:36,126 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:36,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-16 04:50:36,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:50:36,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:36,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-16 04:50:36,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:36,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:36,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800582510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:36,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:36,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 22 [2023-12-16 04:50:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219410778] [2023-12-16 04:50:36,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:36,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-16 04:50:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-16 04:50:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2023-12-16 04:50:36,552 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 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) [2023-12-16 04:50:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:36,739 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2023-12-16 04:50:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-16 04:50:36,739 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 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 71 [2023-12-16 04:50:36,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:36,740 INFO L225 Difference]: With dead ends: 83 [2023-12-16 04:50:36,740 INFO L226 Difference]: Without dead ends: 81 [2023-12-16 04:50:36,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 34 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=593, Invalid=1047, Unknown=0, NotChecked=0, Total=1640 [2023-12-16 04:50:36,740 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 40 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:36,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 17 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:36,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-16 04:50:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2023-12-16 04:50:36,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 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) [2023-12-16 04:50:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2023-12-16 04:50:36,750 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 71 [2023-12-16 04:50:36,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:36,750 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2023-12-16 04:50:36,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 22 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) [2023-12-16 04:50:36,751 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2023-12-16 04:50:36,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-16 04:50:36,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:36,752 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1, 1, 1] [2023-12-16 04:50:36,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:36,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-12-16 04:50:36,958 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:36,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:36,959 INFO L85 PathProgramCache]: Analyzing trace with hash -835016728, now seen corresponding path program 33 times [2023-12-16 04:50:36,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:36,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005259549] [2023-12-16 04:50:36,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:36,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 393 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:37,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:37,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005259549] [2023-12-16 04:50:37,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005259549] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:37,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303435225] [2023-12-16 04:50:37,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:50:37,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:37,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:37,533 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:37,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-16 04:50:37,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-12-16 04:50:37,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:37,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-16 04:50:37,601 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:38,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:38,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303435225] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:38,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:38,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 58 [2023-12-16 04:50:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807159532] [2023-12-16 04:50:38,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-16 04:50:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-16 04:50:38,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2023-12-16 04:50:38,621 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 59 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 58 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) [2023-12-16 04:50:39,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:39,014 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2023-12-16 04:50:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-16 04:50:39,015 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 58 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) Word has length 74 [2023-12-16 04:50:39,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:39,015 INFO L225 Difference]: With dead ends: 134 [2023-12-16 04:50:39,015 INFO L226 Difference]: Without dead ends: 76 [2023-12-16 04:50:39,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 92 SyntacticMatches, 35 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2517 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1357, Invalid=4649, Unknown=0, NotChecked=0, Total=6006 [2023-12-16 04:50:39,016 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:39,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 213 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:39,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-12-16 04:50:39,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-12-16 04:50:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 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) [2023-12-16 04:50:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2023-12-16 04:50:39,019 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2023-12-16 04:50:39,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:39,019 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2023-12-16 04:50:39,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 58 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) [2023-12-16 04:50:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2023-12-16 04:50:39,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-16 04:50:39,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:39,020 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1] [2023-12-16 04:50:39,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-16 04:50:39,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-12-16 04:50:39,225 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:39,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash 172708301, now seen corresponding path program 34 times [2023-12-16 04:50:39,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:39,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762245791] [2023-12-16 04:50:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:39,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 153 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762245791] [2023-12-16 04:50:39,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762245791] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:39,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72943908] [2023-12-16 04:50:39,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:50:39,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:39,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:39,527 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:39,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-16 04:50:39,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:50:39,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:39,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 04:50:39,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:39,676 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:39,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:40,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72943908] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:40,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:40,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2023-12-16 04:50:40,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371057742] [2023-12-16 04:50:40,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:40,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-16 04:50:40,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:40,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-16 04:50:40,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2023-12-16 04:50:40,007 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:40,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:40,215 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2023-12-16 04:50:40,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-16 04:50:40,215 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2023-12-16 04:50:40,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:40,216 INFO L225 Difference]: With dead ends: 87 [2023-12-16 04:50:40,216 INFO L226 Difference]: Without dead ends: 85 [2023-12-16 04:50:40,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 128 SyntacticMatches, 36 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2023-12-16 04:50:40,216 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 44 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:40,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 23 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-12-16 04:50:40,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2023-12-16 04:50:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2023-12-16 04:50:40,220 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 75 [2023-12-16 04:50:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:40,220 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2023-12-16 04:50:40,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.2916666666666665) internal successors, (79), 23 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2023-12-16 04:50:40,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-16 04:50:40,221 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:40,221 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1, 1, 1] [2023-12-16 04:50:40,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:40,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-16 04:50:40,426 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:40,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:40,426 INFO L85 PathProgramCache]: Analyzing trace with hash -213005236, now seen corresponding path program 35 times [2023-12-16 04:50:40,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:40,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739454046] [2023-12-16 04:50:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:40,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 443 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:41,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739454046] [2023-12-16 04:50:41,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739454046] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175946072] [2023-12-16 04:50:41,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:50:41,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:41,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:41,043 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:41,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-16 04:50:41,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-12-16 04:50:41,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:41,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-16 04:50:41,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:41,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:42,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175946072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:42,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:42,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 61 [2023-12-16 04:50:42,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523236517] [2023-12-16 04:50:42,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:42,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-16 04:50:42,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:42,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-16 04:50:42,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2023-12-16 04:50:42,261 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 62 states, 62 states have (on average 2.2580645161290325) internal successors, (140), 61 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:42,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:42,545 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2023-12-16 04:50:42,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-16 04:50:42,546 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.2580645161290325) internal successors, (140), 61 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-12-16 04:50:42,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:42,546 INFO L225 Difference]: With dead ends: 141 [2023-12-16 04:50:42,546 INFO L226 Difference]: Without dead ends: 80 [2023-12-16 04:50:42,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 97 SyntacticMatches, 37 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2791 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1498, Invalid=5144, Unknown=0, NotChecked=0, Total=6642 [2023-12-16 04:50:42,547 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:42,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 166 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-16 04:50:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-16 04:50:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2023-12-16 04:50:42,555 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 78 [2023-12-16 04:50:42,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:42,555 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2023-12-16 04:50:42,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.2580645161290325) internal successors, (140), 61 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2023-12-16 04:50:42,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-16 04:50:42,556 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:42,556 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1] [2023-12-16 04:50:42,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:42,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:42,761 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:42,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash 24968113, now seen corresponding path program 36 times [2023-12-16 04:50:42,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:42,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088342786] [2023-12-16 04:50:42,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:42,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:42,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 171 proven. 514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:43,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088342786] [2023-12-16 04:50:43,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088342786] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:43,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68411844] [2023-12-16 04:50:43,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 04:50:43,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:43,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:43,143 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:43,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-16 04:50:43,209 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2023-12-16 04:50:43,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:43,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-16 04:50:43,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:43,309 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:43,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68411844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:43,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:43,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 24 [2023-12-16 04:50:43,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026928223] [2023-12-16 04:50:43,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:43,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-16 04:50:43,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-16 04:50:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2023-12-16 04:50:43,678 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:43,902 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2023-12-16 04:50:43,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-16 04:50:43,902 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 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 79 [2023-12-16 04:50:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:43,902 INFO L225 Difference]: With dead ends: 91 [2023-12-16 04:50:43,902 INFO L226 Difference]: Without dead ends: 89 [2023-12-16 04:50:43,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 135 SyntacticMatches, 38 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=718, Invalid=1262, Unknown=0, NotChecked=0, Total=1980 [2023-12-16 04:50:43,903 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 46 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:43,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 19 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-12-16 04:50:43,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2023-12-16 04:50:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:43,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2023-12-16 04:50:43,907 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2023-12-16 04:50:43,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:43,907 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2023-12-16 04:50:43,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 24 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:43,907 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2023-12-16 04:50:43,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-16 04:50:43,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:43,908 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1, 1, 1] [2023-12-16 04:50:43,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:44,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-16 04:50:44,113 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:44,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:44,114 INFO L85 PathProgramCache]: Analyzing trace with hash 800532456, now seen corresponding path program 37 times [2023-12-16 04:50:44,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:44,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409722674] [2023-12-16 04:50:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:44,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:44,721 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 496 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:44,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:44,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409722674] [2023-12-16 04:50:44,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409722674] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:44,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45531856] [2023-12-16 04:50:44,721 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 04:50:44,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:44,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:44,723 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:44,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-16 04:50:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:44,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 04:50:44,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:45,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:45,885 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:45,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45531856] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:45,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:45,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 64 [2023-12-16 04:50:45,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299036141] [2023-12-16 04:50:45,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:45,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-16 04:50:45,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:45,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-16 04:50:45,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2023-12-16 04:50:45,887 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 65 states, 65 states have (on average 2.2615384615384615) internal successors, (147), 64 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) [2023-12-16 04:50:46,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:46,382 INFO L93 Difference]: Finished difference Result 148 states and 150 transitions. [2023-12-16 04:50:46,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-16 04:50:46,382 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.2615384615384615) internal successors, (147), 64 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) Word has length 82 [2023-12-16 04:50:46,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:46,382 INFO L225 Difference]: With dead ends: 148 [2023-12-16 04:50:46,382 INFO L226 Difference]: Without dead ends: 84 [2023-12-16 04:50:46,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 102 SyntacticMatches, 39 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3079 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1646, Invalid=5664, Unknown=0, NotChecked=0, Total=7310 [2023-12-16 04:50:46,384 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 8 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:46,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 251 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:50:46,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-12-16 04:50:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-12-16 04:50:46,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:46,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2023-12-16 04:50:46,388 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2023-12-16 04:50:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:46,388 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2023-12-16 04:50:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.2615384615384615) internal successors, (147), 64 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) [2023-12-16 04:50:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2023-12-16 04:50:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-16 04:50:46,388 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:46,389 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1] [2023-12-16 04:50:46,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:46,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-16 04:50:46,594 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:46,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:46,595 INFO L85 PathProgramCache]: Analyzing trace with hash 709237965, now seen corresponding path program 38 times [2023-12-16 04:50:46,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:46,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811548740] [2023-12-16 04:50:46,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:46,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 190 proven. 571 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:46,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811548740] [2023-12-16 04:50:46,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811548740] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:46,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23201143] [2023-12-16 04:50:46,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:50:46,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:46,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:46,974 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:46,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-16 04:50:47,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:50:47,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:47,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-16 04:50:47,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:47,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:47,625 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:47,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23201143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:47,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:47,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2023-12-16 04:50:47,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32522156] [2023-12-16 04:50:47,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:47,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-16 04:50:47,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:47,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-16 04:50:47,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2023-12-16 04:50:47,627 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:47,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:47,825 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2023-12-16 04:50:47,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-16 04:50:47,825 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 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 83 [2023-12-16 04:50:47,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:47,827 INFO L225 Difference]: With dead ends: 95 [2023-12-16 04:50:47,827 INFO L226 Difference]: Without dead ends: 93 [2023-12-16 04:50:47,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 142 SyntacticMatches, 40 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=785, Invalid=1377, Unknown=0, NotChecked=0, Total=2162 [2023-12-16 04:50:47,828 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 46 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:47,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 21 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:47,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-16 04:50:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2023-12-16 04:50:47,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2023-12-16 04:50:47,836 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 83 [2023-12-16 04:50:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:47,836 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2023-12-16 04:50:47,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2023-12-16 04:50:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-16 04:50:47,837 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:47,837 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 1, 1, 1, 1, 1] [2023-12-16 04:50:47,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:48,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-16 04:50:48,042 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:48,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1968906572, now seen corresponding path program 39 times [2023-12-16 04:50:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:48,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677645992] [2023-12-16 04:50:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 552 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:48,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:48,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677645992] [2023-12-16 04:50:48,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677645992] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:48,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801209585] [2023-12-16 04:50:48,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:50:48,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:48,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:48,846 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:48,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-16 04:50:48,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-12-16 04:50:48,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:48,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-16 04:50:48,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:49,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:50,265 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:50,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801209585] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:50,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:50,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 67 [2023-12-16 04:50:50,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210040913] [2023-12-16 04:50:50,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:50,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-16 04:50:50,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:50,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-16 04:50:50,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2023-12-16 04:50:50,267 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 68 states, 68 states have (on average 2.264705882352941) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:50,753 INFO L93 Difference]: Finished difference Result 155 states and 157 transitions. [2023-12-16 04:50:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-16 04:50:50,753 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.264705882352941) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 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 86 [2023-12-16 04:50:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:50,754 INFO L225 Difference]: With dead ends: 155 [2023-12-16 04:50:50,754 INFO L226 Difference]: Without dead ends: 88 [2023-12-16 04:50:50,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 107 SyntacticMatches, 41 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3381 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1801, Invalid=6209, Unknown=0, NotChecked=0, Total=8010 [2023-12-16 04:50:50,755 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:50,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 230 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:50,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-12-16 04:50:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-12-16 04:50:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2023-12-16 04:50:50,759 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2023-12-16 04:50:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:50,759 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2023-12-16 04:50:50,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.264705882352941) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2023-12-16 04:50:50,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-16 04:50:50,760 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:50,760 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1] [2023-12-16 04:50:50,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:50,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-12-16 04:50:50,961 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:50,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:50,961 INFO L85 PathProgramCache]: Analyzing trace with hash -202695759, now seen corresponding path program 40 times [2023-12-16 04:50:50,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:50,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225769539] [2023-12-16 04:50:50,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:51,362 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 210 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:51,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:51,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225769539] [2023-12-16 04:50:51,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225769539] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:51,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304152085] [2023-12-16 04:50:51,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:50:51,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:51,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:51,364 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:51,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-16 04:50:51,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:50:51,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:51,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 04:50:51,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:51,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:51,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304152085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:51,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:51,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2023-12-16 04:50:51,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292537296] [2023-12-16 04:50:51,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:51,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-16 04:50:51,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-16 04:50:51,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2023-12-16 04:50:51,845 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:52,013 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2023-12-16 04:50:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-16 04:50:52,013 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-12-16 04:50:52,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:52,014 INFO L225 Difference]: With dead ends: 99 [2023-12-16 04:50:52,014 INFO L226 Difference]: Without dead ends: 97 [2023-12-16 04:50:52,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 149 SyntacticMatches, 42 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=855, Invalid=1497, Unknown=0, NotChecked=0, Total=2352 [2023-12-16 04:50:52,014 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 27 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:52,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 24 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-12-16 04:50:52,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2023-12-16 04:50:52,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:52,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2023-12-16 04:50:52,019 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 87 [2023-12-16 04:50:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:52,019 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2023-12-16 04:50:52,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.3703703703703702) internal successors, (91), 26 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2023-12-16 04:50:52,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-16 04:50:52,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:52,019 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1] [2023-12-16 04:50:52,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:52,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:52,225 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:52,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash 219482088, now seen corresponding path program 41 times [2023-12-16 04:50:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:52,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187586603] [2023-12-16 04:50:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:52,763 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 611 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:52,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:52,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187586603] [2023-12-16 04:50:52,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187586603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:52,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348573177] [2023-12-16 04:50:52,763 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:50:52,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:52,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:52,764 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:52,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-16 04:50:52,852 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-12-16 04:50:52,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:52,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-16 04:50:52,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:53,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:54,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348573177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:54,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:54,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 70 [2023-12-16 04:50:54,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62481927] [2023-12-16 04:50:54,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:54,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-12-16 04:50:54,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:54,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-12-16 04:50:54,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2023-12-16 04:50:54,137 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 71 states, 71 states have (on average 2.267605633802817) internal successors, (161), 70 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:54,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:54,700 INFO L93 Difference]: Finished difference Result 162 states and 164 transitions. [2023-12-16 04:50:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-16 04:50:54,701 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.267605633802817) internal successors, (161), 70 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-12-16 04:50:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:54,701 INFO L225 Difference]: With dead ends: 162 [2023-12-16 04:50:54,701 INFO L226 Difference]: Without dead ends: 92 [2023-12-16 04:50:54,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 112 SyntacticMatches, 43 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3697 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1963, Invalid=6779, Unknown=0, NotChecked=0, Total=8742 [2023-12-16 04:50:54,702 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:54,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 285 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:50:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-16 04:50:54,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-12-16 04:50:54,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:54,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2023-12-16 04:50:54,707 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 90 [2023-12-16 04:50:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:54,707 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2023-12-16 04:50:54,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.267605633802817) internal successors, (161), 70 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2023-12-16 04:50:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-16 04:50:54,707 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:54,707 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1] [2023-12-16 04:50:54,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-16 04:50:54,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:54,912 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:54,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1957119949, now seen corresponding path program 42 times [2023-12-16 04:50:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:54,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482779737] [2023-12-16 04:50:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:54,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:55,327 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 231 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:55,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482779737] [2023-12-16 04:50:55,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482779737] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:55,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166592762] [2023-12-16 04:50:55,327 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 04:50:55,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:55,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:55,328 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:55,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-12-16 04:50:55,405 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2023-12-16 04:50:55,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:50:55,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-16 04:50:55,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:55,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:55,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166592762] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:55,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:55,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 27 [2023-12-16 04:50:55,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026002316] [2023-12-16 04:50:55,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:55,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-16 04:50:55,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:55,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-16 04:50:55,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2023-12-16 04:50:55,967 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 27 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:56,245 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2023-12-16 04:50:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-16 04:50:56,246 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 27 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2023-12-16 04:50:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:56,246 INFO L225 Difference]: With dead ends: 103 [2023-12-16 04:50:56,246 INFO L226 Difference]: Without dead ends: 101 [2023-12-16 04:50:56,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 156 SyntacticMatches, 44 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=928, Invalid=1622, Unknown=0, NotChecked=0, Total=2550 [2023-12-16 04:50:56,247 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:56,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:56,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-16 04:50:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2023-12-16 04:50:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2023-12-16 04:50:56,252 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 91 [2023-12-16 04:50:56,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:56,252 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2023-12-16 04:50:56,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 27 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:56,252 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2023-12-16 04:50:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-16 04:50:56,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:56,253 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2023-12-16 04:50:56,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:56,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-16 04:50:56,458 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:56,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:56,458 INFO L85 PathProgramCache]: Analyzing trace with hash 384177740, now seen corresponding path program 43 times [2023-12-16 04:50:56,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:56,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851903759] [2023-12-16 04:50:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:56,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 673 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:57,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:50:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851903759] [2023-12-16 04:50:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851903759] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:50:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22125900] [2023-12-16 04:50:57,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 04:50:57,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:50:57,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:50:57,303 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:50:57,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-12-16 04:50:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:50:57,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 04:50:57,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:50:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:58,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:50:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:50:58,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22125900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:50:58,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:50:58,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 73 [2023-12-16 04:50:58,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842776202] [2023-12-16 04:50:58,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:50:58,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-12-16 04:50:58,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:50:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-12-16 04:50:58,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2023-12-16 04:50:58,955 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 74 states, 74 states have (on average 2.27027027027027) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:59,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:50:59,524 INFO L93 Difference]: Finished difference Result 169 states and 171 transitions. [2023-12-16 04:50:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-16 04:50:59,524 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.27027027027027) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 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 94 [2023-12-16 04:50:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:50:59,525 INFO L225 Difference]: With dead ends: 169 [2023-12-16 04:50:59,525 INFO L226 Difference]: Without dead ends: 96 [2023-12-16 04:50:59,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 117 SyntacticMatches, 45 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4027 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2132, Invalid=7374, Unknown=0, NotChecked=0, Total=9506 [2023-12-16 04:50:59,526 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:50:59,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 208 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:50:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-12-16 04:50:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-12-16 04:50:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2023-12-16 04:50:59,530 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 94 [2023-12-16 04:50:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:50:59,531 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2023-12-16 04:50:59,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.27027027027027) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:50:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2023-12-16 04:50:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-16 04:50:59,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:50:59,531 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1] [2023-12-16 04:50:59,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-12-16 04:50:59,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-12-16 04:50:59,732 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:50:59,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:50:59,732 INFO L85 PathProgramCache]: Analyzing trace with hash -371467343, now seen corresponding path program 44 times [2023-12-16 04:50:59,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:50:59,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967526498] [2023-12-16 04:50:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:50:59,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:50:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 253 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:00,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:00,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967526498] [2023-12-16 04:51:00,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967526498] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:00,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392851001] [2023-12-16 04:51:00,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:51:00,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:00,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:00,194 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:00,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-16 04:51:00,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:51:00,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:00,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-16 04:51:00,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:00,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:00,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392851001] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:00,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:00,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 28 [2023-12-16 04:51:00,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536240211] [2023-12-16 04:51:00,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-16 04:51:00,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-16 04:51:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2023-12-16 04:51:00,954 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 28 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:01,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:01,197 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2023-12-16 04:51:01,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-16 04:51:01,198 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 28 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2023-12-16 04:51:01,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:01,198 INFO L225 Difference]: With dead ends: 107 [2023-12-16 04:51:01,198 INFO L226 Difference]: Without dead ends: 105 [2023-12-16 04:51:01,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 163 SyntacticMatches, 46 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2023-12-16 04:51:01,201 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:01,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 21 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:51:01,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-12-16 04:51:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2023-12-16 04:51:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2023-12-16 04:51:01,207 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 95 [2023-12-16 04:51:01,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:01,207 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2023-12-16 04:51:01,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 28 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:01,207 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2023-12-16 04:51:01,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-16 04:51:01,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:01,208 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 1, 1, 1, 1, 1] [2023-12-16 04:51:01,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-12-16 04:51:01,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-12-16 04:51:01,413 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:01,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:01,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1751926760, now seen corresponding path program 45 times [2023-12-16 04:51:01,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:01,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110034527] [2023-12-16 04:51:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:01,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 738 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:02,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:02,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110034527] [2023-12-16 04:51:02,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110034527] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:02,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868837642] [2023-12-16 04:51:02,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:51:02,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:02,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:02,185 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:02,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-12-16 04:51:02,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2023-12-16 04:51:02,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:02,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-16 04:51:02,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:03,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:03,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:03,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:03,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868837642] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:03,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:03,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 76 [2023-12-16 04:51:03,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077054791] [2023-12-16 04:51:03,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:03,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-12-16 04:51:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:03,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-12-16 04:51:03,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2023-12-16 04:51:03,910 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 77 states, 77 states have (on average 2.272727272727273) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:04,584 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions. [2023-12-16 04:51:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-16 04:51:04,584 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.272727272727273) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 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 98 [2023-12-16 04:51:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:04,585 INFO L225 Difference]: With dead ends: 176 [2023-12-16 04:51:04,585 INFO L226 Difference]: Without dead ends: 100 [2023-12-16 04:51:04,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 122 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4371 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2308, Invalid=7994, Unknown=0, NotChecked=0, Total=10302 [2023-12-16 04:51:04,586 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 8 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:04,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 338 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:51:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-12-16 04:51:04,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-12-16 04:51:04,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:04,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2023-12-16 04:51:04,591 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2023-12-16 04:51:04,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:04,592 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2023-12-16 04:51:04,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.272727272727273) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:04,592 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2023-12-16 04:51:04,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-16 04:51:04,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:04,592 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1] [2023-12-16 04:51:04,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-12-16 04:51:04,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:04,799 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:04,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:04,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1769549107, now seen corresponding path program 46 times [2023-12-16 04:51:04,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:04,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82021066] [2023-12-16 04:51:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:04,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 276 proven. 829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:05,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:05,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82021066] [2023-12-16 04:51:05,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82021066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:05,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254613712] [2023-12-16 04:51:05,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-16 04:51:05,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:05,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:05,392 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:05,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-12-16 04:51:05,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-16 04:51:05,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:05,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-16 04:51:05,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:05,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:05,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:06,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254613712] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:06,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:06,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2023-12-16 04:51:06,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009075179] [2023-12-16 04:51:06,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:06,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-16 04:51:06,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:06,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-16 04:51:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=511, Unknown=0, NotChecked=0, Total=870 [2023-12-16 04:51:06,110 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 29 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:06,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:06,433 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2023-12-16 04:51:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-12-16 04:51:06,434 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 29 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-12-16 04:51:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:06,434 INFO L225 Difference]: With dead ends: 111 [2023-12-16 04:51:06,434 INFO L226 Difference]: Without dead ends: 109 [2023-12-16 04:51:06,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 170 SyntacticMatches, 48 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1083, Invalid=1887, Unknown=0, NotChecked=0, Total=2970 [2023-12-16 04:51:06,435 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 30 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:06,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 32 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:51:06,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-16 04:51:06,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-12-16 04:51:06,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2023-12-16 04:51:06,440 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 99 [2023-12-16 04:51:06,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:06,441 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2023-12-16 04:51:06,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.433333333333333) internal successors, (103), 29 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:06,441 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2023-12-16 04:51:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-16 04:51:06,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:06,441 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 1, 1, 1, 1, 1] [2023-12-16 04:51:06,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2023-12-16 04:51:06,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-16 04:51:06,651 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:06,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:06,651 INFO L85 PathProgramCache]: Analyzing trace with hash -204035252, now seen corresponding path program 47 times [2023-12-16 04:51:06,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:06,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993405231] [2023-12-16 04:51:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:06,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 806 proven. 370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:07,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:07,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993405231] [2023-12-16 04:51:07,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993405231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:07,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292493828] [2023-12-16 04:51:07,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-16 04:51:07,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:07,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:07,650 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:07,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-16 04:51:07,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-12-16 04:51:07,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:07,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-16 04:51:07,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:08,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292493828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:09,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 79 [2023-12-16 04:51:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734563580] [2023-12-16 04:51:09,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:09,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-12-16 04:51:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-12-16 04:51:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2023-12-16 04:51:09,593 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 80 states, 80 states have (on average 2.275) internal successors, (182), 79 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:10,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:10,373 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2023-12-16 04:51:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-16 04:51:10,374 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.275) internal successors, (182), 79 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2023-12-16 04:51:10,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:10,374 INFO L225 Difference]: With dead ends: 183 [2023-12-16 04:51:10,374 INFO L226 Difference]: Without dead ends: 104 [2023-12-16 04:51:10,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 127 SyntacticMatches, 49 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4729 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2491, Invalid=8639, Unknown=0, NotChecked=0, Total=11130 [2023-12-16 04:51:10,375 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:10,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 320 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:51:10,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-12-16 04:51:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-12-16 04:51:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2023-12-16 04:51:10,380 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 102 [2023-12-16 04:51:10,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:10,380 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2023-12-16 04:51:10,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.275) internal successors, (182), 79 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:10,381 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2023-12-16 04:51:10,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-16 04:51:10,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:10,381 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1] [2023-12-16 04:51:10,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-12-16 04:51:10,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-12-16 04:51:10,587 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:10,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash 708262833, now seen corresponding path program 48 times [2023-12-16 04:51:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:10,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489778570] [2023-12-16 04:51:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:10,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 300 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:11,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:11,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489778570] [2023-12-16 04:51:11,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489778570] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:11,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417153658] [2023-12-16 04:51:11,141 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-16 04:51:11,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:11,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:11,142 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:11,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-12-16 04:51:11,230 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2023-12-16 04:51:11,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:11,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-16 04:51:11,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:11,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417153658] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:11,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:11,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 30 [2023-12-16 04:51:11,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330855570] [2023-12-16 04:51:11,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-16 04:51:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-16 04:51:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2023-12-16 04:51:11,922 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:12,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:12,301 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2023-12-16 04:51:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-16 04:51:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-12-16 04:51:12,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:12,302 INFO L225 Difference]: With dead ends: 115 [2023-12-16 04:51:12,302 INFO L226 Difference]: Without dead ends: 113 [2023-12-16 04:51:12,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 177 SyntacticMatches, 50 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1165, Invalid=2027, Unknown=0, NotChecked=0, Total=3192 [2023-12-16 04:51:12,302 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 33 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:12,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:51:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-16 04:51:12,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2023-12-16 04:51:12,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:12,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2023-12-16 04:51:12,308 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 103 [2023-12-16 04:51:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:12,308 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2023-12-16 04:51:12,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 30 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:12,308 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2023-12-16 04:51:12,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-16 04:51:12,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:12,308 INFO L195 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 1, 1, 1, 1, 1] [2023-12-16 04:51:12,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-12-16 04:51:12,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-16 04:51:12,509 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:12,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:12,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1311447064, now seen corresponding path program 49 times [2023-12-16 04:51:12,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:12,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521313603] [2023-12-16 04:51:12,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:12,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 877 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:13,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521313603] [2023-12-16 04:51:13,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521313603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337080346] [2023-12-16 04:51:13,226 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-16 04:51:13,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:13,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:13,227 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:13,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-12-16 04:51:13,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:13,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-16 04:51:13,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:13,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:13,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:14,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:14,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337080346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:14,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:14,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 82 [2023-12-16 04:51:14,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972119680] [2023-12-16 04:51:14,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:14,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-12-16 04:51:14,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:14,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-12-16 04:51:14,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2023-12-16 04:51:14,526 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 83 states, 83 states have (on average 2.2771084337349397) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:14,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:14,976 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2023-12-16 04:51:14,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-16 04:51:14,976 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.2771084337349397) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 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 106 [2023-12-16 04:51:14,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:14,994 INFO L225 Difference]: With dead ends: 190 [2023-12-16 04:51:14,995 INFO L226 Difference]: Without dead ends: 108 [2023-12-16 04:51:14,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 132 SyntacticMatches, 51 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2681, Invalid=9309, Unknown=0, NotChecked=0, Total=11990 [2023-12-16 04:51:14,995 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:14,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 265 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:51:14,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-12-16 04:51:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-12-16 04:51:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:15,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2023-12-16 04:51:15,001 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2023-12-16 04:51:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:15,001 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2023-12-16 04:51:15,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.2771084337349397) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2023-12-16 04:51:15,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-12-16 04:51:15,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:15,002 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1] [2023-12-16 04:51:15,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-12-16 04:51:15,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2023-12-16 04:51:15,213 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:15,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:15,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1426276915, now seen corresponding path program 50 times [2023-12-16 04:51:15,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:15,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107990202] [2023-12-16 04:51:15,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:15,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:15,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 325 proven. 976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:15,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:15,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107990202] [2023-12-16 04:51:15,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107990202] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:15,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924439928] [2023-12-16 04:51:15,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:51:15,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:15,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:15,652 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:15,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-16 04:51:15,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:51:15,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:15,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-16 04:51:15,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:15,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:16,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924439928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:16,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:16,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 31 [2023-12-16 04:51:16,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99707515] [2023-12-16 04:51:16,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:16,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-16 04:51:16,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:16,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-16 04:51:16,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2023-12-16 04:51:16,182 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 32 states, 32 states have (on average 3.46875) internal successors, (111), 31 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:16,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:16,397 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2023-12-16 04:51:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-16 04:51:16,397 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 31 states have internal predecessors, (111), 0 states have call successors, (0), 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 107 [2023-12-16 04:51:16,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:16,398 INFO L225 Difference]: With dead ends: 119 [2023-12-16 04:51:16,398 INFO L226 Difference]: Without dead ends: 117 [2023-12-16 04:51:16,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 184 SyntacticMatches, 52 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1580 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1250, Invalid=2172, Unknown=0, NotChecked=0, Total=3422 [2023-12-16 04:51:16,399 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 58 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:16,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 19 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:51:16,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-16 04:51:16,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2023-12-16 04:51:16,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2023-12-16 04:51:16,404 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 107 [2023-12-16 04:51:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:16,405 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2023-12-16 04:51:16,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 31 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2023-12-16 04:51:16,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-16 04:51:16,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:16,405 INFO L195 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1, 1, 1] [2023-12-16 04:51:16,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-12-16 04:51:16,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:16,611 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:16,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash -99295156, now seen corresponding path program 51 times [2023-12-16 04:51:16,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:16,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489675558] [2023-12-16 04:51:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:16,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:51:17,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 951 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:17,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:51:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489675558] [2023-12-16 04:51:17,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489675558] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:51:17,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673792417] [2023-12-16 04:51:17,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:51:17,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:51:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:51:17,838 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:51:17,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-12-16 04:51:17,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2023-12-16 04:51:17,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:51:17,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-16 04:51:17,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:51:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:18,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:51:19,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:51:19,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673792417] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:51:19,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-16 04:51:19,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 85 [2023-12-16 04:51:19,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812456137] [2023-12-16 04:51:19,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-16 04:51:19,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-12-16 04:51:19,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:51:19,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-12-16 04:51:19,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2023-12-16 04:51:19,415 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 86 states, 86 states have (on average 2.2790697674418605) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:51:20,135 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2023-12-16 04:51:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-16 04:51:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.2790697674418605) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 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 110 [2023-12-16 04:51:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:51:20,136 INFO L225 Difference]: With dead ends: 197 [2023-12-16 04:51:20,136 INFO L226 Difference]: Without dead ends: 112 [2023-12-16 04:51:20,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 137 SyntacticMatches, 53 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5487 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2878, Invalid=10004, Unknown=0, NotChecked=0, Total=12882 [2023-12-16 04:51:20,137 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 8 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:51:20,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 341 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:51:20,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-12-16 04:51:20,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2023-12-16 04:51:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2023-12-16 04:51:20,143 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2023-12-16 04:51:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:51:20,143 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2023-12-16 04:51:20,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.2790697674418605) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:51:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2023-12-16 04:51:20,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-12-16 04:51:20,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:51:20,143 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1] [2023-12-16 04:51:20,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-12-16 04:51:20,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2023-12-16 04:51:20,344 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:51:20,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:51:20,344 INFO L85 PathProgramCache]: Analyzing trace with hash -840614991, now seen corresponding path program 52 times [2023-12-16 04:51:20,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:51:20,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204137232] [2023-12-16 04:51:20,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:51:20,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:51:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-16 04:51:20,598 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 [2023-12-16 04:51:20,602 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,602 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,603 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,603 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,603 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,603 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,603 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,603 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,603 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,604 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,604 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,604 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,604 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,604 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,604 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,604 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,605 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,605 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,605 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,605 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,605 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,605 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,605 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,605 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,606 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,606 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,606 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,606 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,606 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,606 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,606 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,606 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,607 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,607 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,607 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,607 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,607 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,607 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,607 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,607 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,608 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,608 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,608 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,608 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,608 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,608 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,608 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,608 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,609 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,609 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,609 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,609 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,609 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,609 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,609 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,610 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,610 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,610 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,610 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,610 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,610 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,610 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,610 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,610 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,611 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,611 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,611 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,611 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,611 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,611 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,611 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,611 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,611 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,612 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,612 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,612 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,612 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,612 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,612 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,612 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,612 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,612 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,613 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,613 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,613 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,613 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,613 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,613 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,613 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,613 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,613 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,614 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,614 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,614 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,614 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,614 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,614 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,614 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,614 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,614 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,615 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,615 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,615 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,615 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,615 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,615 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,615 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,615 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,615 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,616 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,616 WARN L250 erpolLogProxyWrapper]: Unable to check validity of interpolant: cancelled [2023-12-16 04:51:20,618 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:51:20,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-16 04:51:20,618 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 112 with TraceHistMax 27,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 110 interpolants. [2023-12-16 04:51:20,627 INFO L445 BasicCegarLoop]: Path program histogram: [52, 1, 1] [2023-12-16 04:51:20,629 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:51:20,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:51:20 BoogieIcfgContainer [2023-12-16 04:51:20,630 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:51:20,630 INFO L158 Benchmark]: Toolchain (without parser) took 75139.83ms. Allocated memory was 166.7MB in the beginning and 433.1MB in the end (delta: 266.3MB). Free memory was 122.8MB in the beginning and 153.9MB in the end (delta: -31.1MB). Peak memory consumption was 242.3MB. Max. memory is 8.0GB. [2023-12-16 04:51:20,630 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 166.7MB. Free memory was 124.9MB in the beginning and 124.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:51:20,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.04ms. Allocated memory is still 166.7MB. Free memory was 122.8MB in the beginning and 112.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:51:20,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.43ms. Allocated memory is still 166.7MB. Free memory was 112.0MB in the beginning and 110.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:51:20,631 INFO L158 Benchmark]: Boogie Preprocessor took 18.55ms. Allocated memory is still 166.7MB. Free memory was 110.6MB in the beginning and 108.8MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 04:51:20,631 INFO L158 Benchmark]: RCFGBuilder took 282.31ms. Allocated memory is still 166.7MB. Free memory was 108.8MB in the beginning and 99.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:51:20,631 INFO L158 Benchmark]: TraceAbstraction took 74623.74ms. Allocated memory was 166.7MB in the beginning and 433.1MB in the end (delta: 266.3MB). Free memory was 98.4MB in the beginning and 153.9MB in the end (delta: -55.5MB). Peak memory consumption was 218.2MB. Max. memory is 8.0GB. [2023-12-16 04:51:20,631 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 166.7MB. Free memory was 124.9MB in the beginning and 124.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 178.04ms. Allocated memory is still 166.7MB. Free memory was 122.8MB in the beginning and 112.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.43ms. Allocated memory is still 166.7MB. Free memory was 112.0MB in the beginning and 110.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.55ms. Allocated memory is still 166.7MB. Free memory was 110.6MB in the beginning and 108.8MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 282.31ms. Allocated memory is still 166.7MB. Free memory was 108.8MB in the beginning and 99.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 74623.74ms. Allocated memory was 166.7MB in the beginning and 433.1MB in the end (delta: 266.3MB). Free memory was 98.4MB in the beginning and 153.9MB in the end (delta: -55.5MB). Peak memory consumption was 218.2MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 19). Cancelled while NwaCegarLoop was analyzing trace of length 112 with TraceHistMax 27,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while NestedInterpolantsBuilder was constructing predicates for 110 interpolants. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.5s, OverallIterations: 54, TraceHistogramMax: 27, PathProgramHistogramMax: 52, EmptinessCheckTime: 0.0s, AutomataDifference: 12.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 926 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 926 mSDsluCounter, 4787 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4248 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11557 IncrementalHoareTripleChecker+Invalid, 11633 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 539 mSDtfsCounter, 11557 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8319 GetRequests, 4443 SyntacticMatches, 1428 SemanticMatches, 2448 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69010 ImplicationChecksByTransitivity, 38.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=53, InterpolantAutomatonStates: 1692, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 53 MinimizatonAttempts, 156 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 46.5s InterpolantComputationTime, 6090 NumberOfCodeBlocks, 6090 NumberOfCodeBlocksAsserted, 464 NumberOfCheckSat, 8969 ConstructedInterpolants, 0 QuantifiedInterpolants, 35176 SizeOfPredicates, 156 NumberOfNonLiveVariables, 12038 ConjunctsInSsa, 1664 ConjunctsInUnsatCore, 156 InterpolantComputations, 2 PerfectInterpolantSequences, 36906/73436 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