/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/loops-crafted-1/loopv3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 04:56:10,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 04:56:10,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 04:56:10,674 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 04:56:10,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 04:56:10,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 04:56:10,696 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 04:56:10,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 04:56:10,697 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 04:56:10,700 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 04:56:10,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 04:56:10,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 04:56:10,700 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 04:56:10,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 04:56:10,701 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 04:56:10,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 04:56:10,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 04:56:10,702 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 04:56:10,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 04:56:10,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 04:56:10,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 04:56:10,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 04:56:10,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 04:56:10,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 04:56:10,704 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 04:56:10,704 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 04:56:10,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 04:56:10,704 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 04:56:10,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 04:56:10,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 04:56:10,706 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 04:56:10,706 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 04:56:10,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:56:10,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 04:56:10,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 04:56:10,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 04:56:10,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 04:56:10,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 04:56:10,707 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 04:56:10,707 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 04:56:10,707 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 04:56:10,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 04:56:10,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 04:56:10,707 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 04:56:10,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 04:56:10,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 04:56:10,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 04:56:10,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 04:56:10,881 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 04:56:10,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c [2023-12-21 04:56:12,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 04:56:12,224 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 04:56:12,225 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c [2023-12-21 04:56:12,231 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f324191b/45e96e33e70e4810af87bd30fd32f4f8/FLAGdb0a930f1 [2023-12-21 04:56:12,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f324191b/45e96e33e70e4810af87bd30fd32f4f8 [2023-12-21 04:56:12,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 04:56:12,245 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 04:56:12,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 04:56:12,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 04:56:12,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 04:56:12,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cf2124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12, skipping insertion in model container [2023-12-21 04:56:12,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,268 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 04:56:12,395 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2023-12-21 04:56:12,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:56:12,412 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 04:56:12,421 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2023-12-21 04:56:12,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 04:56:12,433 INFO L206 MainTranslator]: Completed translation [2023-12-21 04:56:12,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12 WrapperNode [2023-12-21 04:56:12,434 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 04:56:12,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 04:56:12,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 04:56:12,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 04:56:12,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,455 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2023-12-21 04:56:12,455 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 04:56:12,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 04:56:12,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 04:56:12,456 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 04:56:12,462 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,463 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,476 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]. [2023-12-21 04:56:12,476 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,482 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 04:56:12,483 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 04:56:12,483 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 04:56:12,483 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 04:56:12,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (1/1) ... [2023-12-21 04:56:12,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 04:56:12,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:12,501 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) [2023-12-21 04:56:12,509 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 [2023-12-21 04:56:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 04:56:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 04:56:12,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 04:56:12,525 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 04:56:12,564 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 04:56:12,565 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 04:56:12,674 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 04:56:12,697 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 04:56:12,698 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 04:56:12,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:56:12 BoogieIcfgContainer [2023-12-21 04:56:12,698 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 04:56:12,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 04:56:12,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 04:56:12,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 04:56:12,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:56:12" (1/3) ... [2023-12-21 04:56:12,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aaa9ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:56:12, skipping insertion in model container [2023-12-21 04:56:12,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:56:12" (2/3) ... [2023-12-21 04:56:12,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aaa9ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:56:12, skipping insertion in model container [2023-12-21 04:56:12,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:56:12" (3/3) ... [2023-12-21 04:56:12,704 INFO L112 eAbstractionObserver]: Analyzing ICFG loopv3.c [2023-12-21 04:56:12,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 04:56:12,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 04:56:12,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 04:56:12,753 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;@5922ea86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 04:56:12,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 04:56:12,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) [2023-12-21 04:56:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-21 04:56:12,763 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:12,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-21 04:56:12,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:12,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:12,771 INFO L85 PathProgramCache]: Analyzing trace with hash 63386408, now seen corresponding path program 1 times [2023-12-21 04:56:12,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:12,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964959445] [2023-12-21 04:56:12,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:12,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:12,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:12,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964959445] [2023-12-21 04:56:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964959445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:56:12,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:56:12,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 04:56:12,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722715205] [2023-12-21 04:56:12,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:56:12,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 04:56:12,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:12,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 04:56:12,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 04:56:12,909 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:12,937 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2023-12-21 04:56:12,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 04:56:12,939 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-21 04:56:12,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:12,945 INFO L225 Difference]: With dead ends: 15 [2023-12-21 04:56:12,945 INFO L226 Difference]: Without dead ends: 7 [2023-12-21 04:56:12,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 04:56:12,951 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:12,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:56:12,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-12-21 04:56:12,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-12-21 04:56:12,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-12-21 04:56:12,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 5 [2023-12-21 04:56:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:12,972 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-12-21 04:56:12,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2023-12-21 04:56:12,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-21 04:56:12,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:12,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-21 04:56:12,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 04:56:12,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:12,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash 63088498, now seen corresponding path program 1 times [2023-12-21 04:56:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:12,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027788310] [2023-12-21 04:56:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:12,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:12,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:13,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:13,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:13,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027788310] [2023-12-21 04:56:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027788310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 04:56:13,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 04:56:13,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 04:56:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796064687] [2023-12-21 04:56:13,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 04:56:13,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 04:56:13,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 04:56:13,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:56:13,096 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:13,113 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2023-12-21 04:56:13,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 04:56:13,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-12-21 04:56:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:13,114 INFO L225 Difference]: With dead ends: 13 [2023-12-21 04:56:13,115 INFO L226 Difference]: Without dead ends: 9 [2023-12-21 04:56:13,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 04:56:13,116 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:13,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:56:13,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-21 04:56:13,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-21 04:56:13,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-12-21 04:56:13,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 5 [2023-12-21 04:56:13,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:13,120 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-12-21 04:56:13,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-12-21 04:56:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-21 04:56:13,121 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:13,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-21 04:56:13,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 04:56:13,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:13,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash 550694231, now seen corresponding path program 1 times [2023-12-21 04:56:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305085344] [2023-12-21 04:56:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:13,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:13,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305085344] [2023-12-21 04:56:13,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305085344] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025865313] [2023-12-21 04:56:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:13,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:13,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:13,243 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) [2023-12-21 04:56:13,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 04:56:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:13,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 04:56:13,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:13,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:13,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:13,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:13,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025865313] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:13,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:13,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-12-21 04:56:13,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106977311] [2023-12-21 04:56:13,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:13,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 04:56:13,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:13,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 04:56:13,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-21 04:56:13,374 INFO L87 Difference]: Start difference. First operand 8 states and 9 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) [2023-12-21 04:56:13,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:13,419 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2023-12-21 04:56:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 04:56:13,423 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 7 [2023-12-21 04:56:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:13,426 INFO L225 Difference]: With dead ends: 18 [2023-12-21 04:56:13,426 INFO L226 Difference]: Without dead ends: 14 [2023-12-21 04:56:13,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-12-21 04:56:13,427 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:13,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:56:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-12-21 04:56:13,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-12-21 04:56:13,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:13,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2023-12-21 04:56:13,430 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 7 [2023-12-21 04:56:13,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:13,430 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2023-12-21 04:56:13,430 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) [2023-12-21 04:56:13,430 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2023-12-21 04:56:13,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-21 04:56:13,432 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:13,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-12-21 04:56:13,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 04:56:13,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:13,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:13,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:13,639 INFO L85 PathProgramCache]: Analyzing trace with hash -788486024, now seen corresponding path program 1 times [2023-12-21 04:56:13,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:13,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526846036] [2023-12-21 04:56:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:13,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:13,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526846036] [2023-12-21 04:56:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526846036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462971945] [2023-12-21 04:56:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:13,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:13,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:13,739 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) [2023-12-21 04:56:13,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 04:56:13,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:13,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 04:56:13,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:13,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:13,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462971945] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:13,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:13,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-12-21 04:56:13,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319339636] [2023-12-21 04:56:13,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:13,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 04:56:13,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:13,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 04:56:13,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2023-12-21 04:56:13,886 INFO L87 Difference]: Start difference. First operand 14 states and 18 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) [2023-12-21 04:56:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:13,941 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2023-12-21 04:56:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 04:56:13,942 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 9 [2023-12-21 04:56:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:13,943 INFO L225 Difference]: With dead ends: 28 [2023-12-21 04:56:13,943 INFO L226 Difference]: Without dead ends: 24 [2023-12-21 04:56:13,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2023-12-21 04:56:13,943 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:13,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 12 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 04:56:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-21 04:56:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2023-12-21 04:56:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 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) [2023-12-21 04:56:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2023-12-21 04:56:13,950 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 9 [2023-12-21 04:56:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:13,951 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2023-12-21 04:56:13,951 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) [2023-12-21 04:56:13,951 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2023-12-21 04:56:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 04:56:13,951 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:13,951 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2023-12-21 04:56:13,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 04:56:14,156 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,SelfDestructingSolverStorable3 [2023-12-21 04:56:14,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:14,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:14,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1746265072, now seen corresponding path program 2 times [2023-12-21 04:56:14,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:14,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576916198] [2023-12-21 04:56:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:14,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:14,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:14,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576916198] [2023-12-21 04:56:14,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576916198] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:14,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373585190] [2023-12-21 04:56:14,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:56:14,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:14,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:14,308 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) [2023-12-21 04:56:14,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 04:56:14,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:56:14,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:56:14,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 04:56:14,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:14,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373585190] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:14,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-12-21 04:56:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572824461] [2023-12-21 04:56:14,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:14,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 04:56:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:14,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 04:56:14,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=268, Unknown=0, NotChecked=0, Total=506 [2023-12-21 04:56:14,595 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 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) [2023-12-21 04:56:14,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:14,669 INFO L93 Difference]: Finished difference Result 60 states and 90 transitions. [2023-12-21 04:56:14,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 04:56:14,670 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 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) Word has length 17 [2023-12-21 04:56:14,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:14,671 INFO L225 Difference]: With dead ends: 60 [2023-12-21 04:56:14,672 INFO L226 Difference]: Without dead ends: 56 [2023-12-21 04:56:14,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=238, Invalid=268, Unknown=0, NotChecked=0, Total=506 [2023-12-21 04:56:14,674 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:14,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:56:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-12-21 04:56:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2023-12-21 04:56:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 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) [2023-12-21 04:56:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2023-12-21 04:56:14,684 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2023-12-21 04:56:14,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:14,685 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2023-12-21 04:56:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 22 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) [2023-12-21 04:56:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2023-12-21 04:56:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 04:56:14,685 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:14,685 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1, 1, 1] [2023-12-21 04:56:14,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 04:56:14,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:14,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:14,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash 174531214, now seen corresponding path program 1 times [2023-12-21 04:56:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:14,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203444817] [2023-12-21 04:56:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:14,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:15,003 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:15,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:15,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203444817] [2023-12-21 04:56:15,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203444817] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:15,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049421213] [2023-12-21 04:56:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:15,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:15,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:15,004 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) [2023-12-21 04:56:15,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 04:56:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:15,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 04:56:15,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:15,154 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:15,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:15,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049421213] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:15,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-12-21 04:56:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437541239] [2023-12-21 04:56:15,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:15,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 04:56:15,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:15,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 04:56:15,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=434, Unknown=0, NotChecked=0, Total=812 [2023-12-21 04:56:15,271 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 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) [2023-12-21 04:56:15,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:15,345 INFO L93 Difference]: Finished difference Result 118 states and 178 transitions. [2023-12-21 04:56:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 04:56:15,346 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 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) Word has length 21 [2023-12-21 04:56:15,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:15,346 INFO L225 Difference]: With dead ends: 118 [2023-12-21 04:56:15,346 INFO L226 Difference]: Without dead ends: 114 [2023-12-21 04:56:15,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=434, Unknown=0, NotChecked=0, Total=812 [2023-12-21 04:56:15,347 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:15,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:56:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-21 04:56:15,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 42. [2023-12-21 04:56:15,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 41 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) [2023-12-21 04:56:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2023-12-21 04:56:15,354 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 21 [2023-12-21 04:56:15,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:15,354 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2023-12-21 04:56:15,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 28 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) [2023-12-21 04:56:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2023-12-21 04:56:15,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-21 04:56:15,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:15,355 INFO L195 NwaCegarLoop]: trace histogram [14, 10, 4, 1, 1, 1, 1, 1] [2023-12-21 04:56:15,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 04:56:15,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:15,560 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:15,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash -114266064, now seen corresponding path program 2 times [2023-12-21 04:56:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:15,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78264333] [2023-12-21 04:56:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:15,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:15,771 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:15,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78264333] [2023-12-21 04:56:15,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78264333] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:15,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515448482] [2023-12-21 04:56:15,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:56:15,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:15,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:15,780 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) [2023-12-21 04:56:15,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 04:56:15,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:56:15,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:56:15,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 04:56:15,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:16,030 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:16,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:16,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515448482] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:16,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:16,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2023-12-21 04:56:16,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193223849] [2023-12-21 04:56:16,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:16,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-12-21 04:56:16,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:16,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-12-21 04:56:16,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=1172, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 04:56:16,325 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 46 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) [2023-12-21 04:56:16,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:16,471 INFO L93 Difference]: Finished difference Result 264 states and 400 transitions. [2023-12-21 04:56:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 04:56:16,472 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 46 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) Word has length 33 [2023-12-21 04:56:16,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:16,474 INFO L225 Difference]: With dead ends: 264 [2023-12-21 04:56:16,474 INFO L226 Difference]: Without dead ends: 260 [2023-12-21 04:56:16,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=990, Invalid=1172, Unknown=0, NotChecked=0, Total=2162 [2023-12-21 04:56:16,476 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:16,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:56:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-21 04:56:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 66. [2023-12-21 04:56:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.476923076923077) internal successors, (96), 65 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) [2023-12-21 04:56:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 96 transitions. [2023-12-21 04:56:16,497 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 96 transitions. Word has length 33 [2023-12-21 04:56:16,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:16,497 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 96 transitions. [2023-12-21 04:56:16,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 46 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) [2023-12-21 04:56:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 96 transitions. [2023-12-21 04:56:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-21 04:56:16,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:16,498 INFO L195 NwaCegarLoop]: trace histogram [18, 12, 6, 1, 1, 1, 1, 1] [2023-12-21 04:56:16,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 04:56:16,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:16,711 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:16,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1105070284, now seen corresponding path program 3 times [2023-12-21 04:56:16,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:16,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425673902] [2023-12-21 04:56:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:16,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:17,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:17,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425673902] [2023-12-21 04:56:17,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425673902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:17,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349044724] [2023-12-21 04:56:17,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:56:17,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:17,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:17,025 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) [2023-12-21 04:56:17,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 04:56:17,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2023-12-21 04:56:17,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:56:17,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 04:56:17,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:17,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:17,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349044724] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:17,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:17,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2023-12-21 04:56:17,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183703551] [2023-12-21 04:56:17,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:17,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 04:56:17,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 04:56:17,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1558, Invalid=1864, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 04:56:17,823 INFO L87 Difference]: Start difference. First operand 66 states and 96 transitions. Second operand has 59 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 58 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:18,031 INFO L93 Difference]: Finished difference Result 508 states and 768 transitions. [2023-12-21 04:56:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 04:56:18,032 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 58 states have internal predecessors, (117), 0 states have call successors, (0), 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 41 [2023-12-21 04:56:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:18,033 INFO L225 Difference]: With dead ends: 508 [2023-12-21 04:56:18,033 INFO L226 Difference]: Without dead ends: 504 [2023-12-21 04:56:18,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1558, Invalid=1864, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 04:56:18,035 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:18,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 04:56:18,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-21 04:56:18,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 82. [2023-12-21 04:56:18,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 81 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:18,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 120 transitions. [2023-12-21 04:56:18,061 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 120 transitions. Word has length 41 [2023-12-21 04:56:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:18,061 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 120 transitions. [2023-12-21 04:56:18,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 1.9830508474576272) internal successors, (117), 58 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:18,061 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 120 transitions. [2023-12-21 04:56:18,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-21 04:56:18,062 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:18,063 INFO L195 NwaCegarLoop]: trace histogram [30, 22, 8, 1, 1, 1, 1, 1] [2023-12-21 04:56:18,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 04:56:18,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:18,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:18,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -787271048, now seen corresponding path program 4 times [2023-12-21 04:56:18,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:18,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899229722] [2023-12-21 04:56:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:18,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:18,859 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:18,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899229722] [2023-12-21 04:56:18,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899229722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:18,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867089468] [2023-12-21 04:56:18,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 04:56:18,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:18,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:18,860 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) [2023-12-21 04:56:18,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 04:56:18,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 04:56:18,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:56:18,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-21 04:56:18,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:19,452 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:19,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:20,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867089468] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:20,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2023-12-21 04:56:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160215200] [2023-12-21 04:56:20,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:20,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-12-21 04:56:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-12-21 04:56:20,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4030, Invalid=4900, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 04:56:20,459 INFO L87 Difference]: Start difference. First operand 82 states and 120 transitions. Second operand has 95 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 94 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) [2023-12-21 04:56:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:20,875 INFO L93 Difference]: Finished difference Result 1052 states and 1590 transitions. [2023-12-21 04:56:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 04:56:20,876 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 94 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 65 [2023-12-21 04:56:20,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:20,881 INFO L225 Difference]: With dead ends: 1052 [2023-12-21 04:56:20,881 INFO L226 Difference]: Without dead ends: 1048 [2023-12-21 04:56:20,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4030, Invalid=4900, Unknown=0, NotChecked=0, Total=8930 [2023-12-21 04:56:20,884 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:20,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 10 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:56:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-12-21 04:56:20,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 130. [2023-12-21 04:56:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 129 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:20,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2023-12-21 04:56:20,939 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 65 [2023-12-21 04:56:20,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:20,939 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2023-12-21 04:56:20,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.9894736842105263) internal successors, (189), 94 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) [2023-12-21 04:56:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2023-12-21 04:56:20,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 04:56:20,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:20,944 INFO L195 NwaCegarLoop]: trace histogram [36, 26, 10, 1, 1, 1, 1, 1] [2023-12-21 04:56:20,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 04:56:21,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:21,149 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:21,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1006131214, now seen corresponding path program 5 times [2023-12-21 04:56:21,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:21,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378164220] [2023-12-21 04:56:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:21,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378164220] [2023-12-21 04:56:22,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378164220] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836421571] [2023-12-21 04:56:22,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 04:56:22,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:22,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:22,085 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) [2023-12-21 04:56:22,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 04:56:22,166 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2023-12-21 04:56:22,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:56:22,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-21 04:56:22,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:23,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:23,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:24,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836421571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:24,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:24,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 112 [2023-12-21 04:56:24,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493846421] [2023-12-21 04:56:24,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:24,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-12-21 04:56:24,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:24,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-12-21 04:56:24,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5698, Invalid=6958, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 04:56:24,314 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand has 113 states, 113 states have (on average 1.991150442477876) internal successors, (225), 112 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:25,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:25,261 INFO L93 Difference]: Finished difference Result 2557 states and 3848 transitions. [2023-12-21 04:56:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-21 04:56:25,261 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.991150442477876) internal successors, (225), 112 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-12-21 04:56:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:25,270 INFO L225 Difference]: With dead ends: 2557 [2023-12-21 04:56:25,270 INFO L226 Difference]: Without dead ends: 2553 [2023-12-21 04:56:25,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5363 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=5698, Invalid=6958, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 04:56:25,273 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:25,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 04:56:25,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2023-12-21 04:56:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 306. [2023-12-21 04:56:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 1.4950819672131148) internal successors, (456), 305 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 456 transitions. [2023-12-21 04:56:25,480 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 456 transitions. Word has length 77 [2023-12-21 04:56:25,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:25,481 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 456 transitions. [2023-12-21 04:56:25,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.991150442477876) internal successors, (225), 112 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:25,481 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 456 transitions. [2023-12-21 04:56:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-12-21 04:56:25,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:25,482 INFO L195 NwaCegarLoop]: trace histogram [54, 33, 21, 1, 1, 1, 1, 1] [2023-12-21 04:56:25,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 04:56:25,687 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,SelfDestructingSolverStorable9 [2023-12-21 04:56:25,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:25,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash -355170858, now seen corresponding path program 6 times [2023-12-21 04:56:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736059487] [2023-12-21 04:56:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:27,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:27,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736059487] [2023-12-21 04:56:27,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736059487] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:27,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757455821] [2023-12-21 04:56:27,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-21 04:56:27,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:27,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:27,272 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) [2023-12-21 04:56:27,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 04:56:27,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2023-12-21 04:56:27,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:56:27,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-21 04:56:27,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:28,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:28,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:31,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 2916 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:31,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757455821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:31,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:31,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 166 [2023-12-21 04:56:31,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224316837] [2023-12-21 04:56:31,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:31,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2023-12-21 04:56:31,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2023-12-21 04:56:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12430, Invalid=15292, Unknown=0, NotChecked=0, Total=27722 [2023-12-21 04:56:31,523 INFO L87 Difference]: Start difference. First operand 306 states and 456 transitions. Second operand has 167 states, 167 states have (on average 1.9940119760479043) internal successors, (333), 166 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:34,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:34,607 INFO L93 Difference]: Finished difference Result 5260 states and 7912 transitions. [2023-12-21 04:56:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2023-12-21 04:56:34,608 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 1.9940119760479043) internal successors, (333), 166 states have internal predecessors, (333), 0 states have call successors, (0), 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 113 [2023-12-21 04:56:34,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:34,620 INFO L225 Difference]: With dead ends: 5260 [2023-12-21 04:56:34,620 INFO L226 Difference]: Without dead ends: 5256 [2023-12-21 04:56:34,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11933 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=12430, Invalid=15292, Unknown=0, NotChecked=0, Total=27722 [2023-12-21 04:56:34,623 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:34,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 20 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 04:56:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2023-12-21 04:56:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 226. [2023-12-21 04:56:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.4933333333333334) internal successors, (336), 225 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:34,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 336 transitions. [2023-12-21 04:56:34,981 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 336 transitions. Word has length 113 [2023-12-21 04:56:34,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:34,982 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 336 transitions. [2023-12-21 04:56:34,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 1.9940119760479043) internal successors, (333), 166 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:34,982 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 336 transitions. [2023-12-21 04:56:34,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 04:56:34,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:34,983 INFO L195 NwaCegarLoop]: trace histogram [70, 40, 30, 1, 1, 1, 1, 1] [2023-12-21 04:56:34,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 04:56:35,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:35,188 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:35,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:35,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1202445568, now seen corresponding path program 7 times [2023-12-21 04:56:35,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:35,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968363000] [2023-12-21 04:56:35,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:35,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:37,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:56:37,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968363000] [2023-12-21 04:56:37,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968363000] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:56:37,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000699380] [2023-12-21 04:56:37,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-21 04:56:37,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:56:37,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:56:37,913 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) [2023-12-21 04:56:37,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 04:56:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:56:37,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-21 04:56:37,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:56:40,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:40,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:56:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 4900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:56:44,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000699380] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:56:44,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:56:44,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72, 72] total 214 [2023-12-21 04:56:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098153009] [2023-12-21 04:56:44,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:56:44,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 215 states [2023-12-21 04:56:44,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:56:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 215 interpolants. [2023-12-21 04:56:44,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20590, Invalid=25420, Unknown=0, NotChecked=0, Total=46010 [2023-12-21 04:56:44,287 INFO L87 Difference]: Start difference. First operand 226 states and 336 transitions. Second operand has 215 states, 215 states have (on average 1.9953488372093022) internal successors, (429), 214 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:56:55,537 INFO L93 Difference]: Finished difference Result 8261 states and 12421 transitions. [2023-12-21 04:56:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2023-12-21 04:56:55,538 INFO L78 Accepts]: Start accepts. Automaton has has 215 states, 215 states have (on average 1.9953488372093022) internal successors, (429), 214 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-21 04:56:55,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:56:55,556 INFO L225 Difference]: With dead ends: 8261 [2023-12-21 04:56:55,556 INFO L226 Difference]: Without dead ends: 8257 [2023-12-21 04:56:55,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19949 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=20590, Invalid=25420, Unknown=0, NotChecked=0, Total=46010 [2023-12-21 04:56:55,561 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 04:56:55,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 04:56:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8257 states. [2023-12-21 04:56:57,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8257 to 566. [2023-12-21 04:56:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 1.497345132743363) internal successors, (846), 565 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 846 transitions. [2023-12-21 04:56:57,079 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 846 transitions. Word has length 145 [2023-12-21 04:56:57,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:56:57,079 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 846 transitions. [2023-12-21 04:56:57,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 215 states, 215 states have (on average 1.9953488372093022) internal successors, (429), 214 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:56:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 846 transitions. [2023-12-21 04:56:57,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 04:56:57,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:56:57,081 INFO L195 NwaCegarLoop]: trace histogram [82, 61, 21, 1, 1, 1, 1, 1] [2023-12-21 04:56:57,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 04:56:57,282 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,SelfDestructingSolverStorable11 [2023-12-21 04:56:57,282 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:56:57,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:56:57,283 INFO L85 PathProgramCache]: Analyzing trace with hash -509743726, now seen corresponding path program 8 times [2023-12-21 04:56:57,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:56:57,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742746941] [2023-12-21 04:56:57,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:56:57,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:56:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:57:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:57:00,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:57:00,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742746941] [2023-12-21 04:57:00,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742746941] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:57:00,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374057241] [2023-12-21 04:57:00,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 04:57:00,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:57:00,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:57:00,374 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) [2023-12-21 04:57:00,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 04:57:00,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 04:57:00,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:57:00,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 85 conjunts are in the unsatisfiable core [2023-12-21 04:57:00,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:57:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:57:03,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:57:08,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6724 backedges. 0 proven. 6724 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:57:08,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374057241] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:57:08,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:57:08,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84, 84] total 250 [2023-12-21 04:57:08,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084441469] [2023-12-21 04:57:08,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:57:08,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 251 states [2023-12-21 04:57:08,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:57:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2023-12-21 04:57:08,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28054, Invalid=34696, Unknown=0, NotChecked=0, Total=62750 [2023-12-21 04:57:08,377 INFO L87 Difference]: Start difference. First operand 566 states and 846 transitions. Second operand has 251 states, 251 states have (on average 1.99601593625498) internal successors, (501), 250 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:57:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 04:57:49,628 INFO L93 Difference]: Finished difference Result 17372 states and 26094 transitions. [2023-12-21 04:57:49,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2023-12-21 04:57:49,630 INFO L78 Accepts]: Start accepts. Automaton has has 251 states, 251 states have (on average 1.99601593625498) internal successors, (501), 250 states have internal predecessors, (501), 0 states have call successors, (0), 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 169 [2023-12-21 04:57:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 04:57:49,685 INFO L225 Difference]: With dead ends: 17372 [2023-12-21 04:57:49,685 INFO L226 Difference]: Without dead ends: 17368 [2023-12-21 04:57:49,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 249 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27305 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=28054, Invalid=34696, Unknown=0, NotChecked=0, Total=62750 [2023-12-21 04:57:49,695 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 04:57:49,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 04:57:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17368 states. [2023-12-21 04:57:52,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17368 to 338. [2023-12-21 04:57:52,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.4955489614243322) internal successors, (504), 337 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:57:52,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 504 transitions. [2023-12-21 04:57:52,307 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 504 transitions. Word has length 169 [2023-12-21 04:57:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 04:57:52,307 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 504 transitions. [2023-12-21 04:57:52,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 251 states, 251 states have (on average 1.99601593625498) internal successors, (501), 250 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 04:57:52,308 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 504 transitions. [2023-12-21 04:57:52,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2023-12-21 04:57:52,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 04:57:52,309 INFO L195 NwaCegarLoop]: trace histogram [138, 110, 28, 1, 1, 1, 1, 1] [2023-12-21 04:57:52,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-21 04:57:52,514 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,SelfDestructingSolverStorable12 [2023-12-21 04:57:52,514 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 04:57:52,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 04:57:52,515 INFO L85 PathProgramCache]: Analyzing trace with hash 792247404, now seen corresponding path program 9 times [2023-12-21 04:57:52,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 04:57:52,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751670508] [2023-12-21 04:57:52,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 04:57:52,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 04:57:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 04:58:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 0 proven. 19044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:58:00,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 04:58:00,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751670508] [2023-12-21 04:58:00,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751670508] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 04:58:00,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511963139] [2023-12-21 04:58:00,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 04:58:00,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 04:58:00,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 04:58:00,117 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) [2023-12-21 04:58:00,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 04:58:00,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 139 check-sat command(s) [2023-12-21 04:58:00,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 04:58:00,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 141 conjunts are in the unsatisfiable core [2023-12-21 04:58:00,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 04:58:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 0 proven. 19044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:58:05,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 04:58:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19044 backedges. 0 proven. 19044 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 04:58:18,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511963139] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 04:58:18,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 04:58:18,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [140, 140, 140] total 418 [2023-12-21 04:58:18,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831712813] [2023-12-21 04:58:18,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 04:58:18,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2023-12-21 04:58:18,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 04:58:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2023-12-21 04:58:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78118, Invalid=97024, Unknown=0, NotChecked=0, Total=175142 [2023-12-21 04:58:18,617 INFO L87 Difference]: Start difference. First operand 338 states and 504 transitions. Second operand has 419 states, 419 states have (on average 1.9976133651551313) internal successors, (837), 418 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:00:47,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:00:47,849 INFO L93 Difference]: Finished difference Result 23774 states and 35725 transitions. [2023-12-21 05:00:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2023-12-21 05:00:47,850 INFO L78 Accepts]: Start accepts. Automaton has has 419 states, 419 states have (on average 1.9976133651551313) internal successors, (837), 418 states have internal predecessors, (837), 0 states have call successors, (0), 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 281 [2023-12-21 05:00:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:00:47,878 INFO L225 Difference]: With dead ends: 23774 [2023-12-21 05:00:47,878 INFO L226 Difference]: Without dead ends: 23770 [2023-12-21 05:00:47,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 417 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76865 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=78118, Invalid=97024, Unknown=0, NotChecked=0, Total=175142 [2023-12-21 05:00:47,893 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 05:00:47,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 05:00:47,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23770 states. [2023-12-21 05:00:58,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23770 to 562. [2023-12-21 05:00:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 561 states have (on average 1.4973262032085561) internal successors, (840), 561 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:00:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 840 transitions. [2023-12-21 05:00:58,278 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 840 transitions. Word has length 281 [2023-12-21 05:00:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:00:58,279 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 840 transitions. [2023-12-21 05:00:58,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 419 states, 419 states have (on average 1.9976133651551313) internal successors, (837), 418 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:00:58,290 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 840 transitions. [2023-12-21 05:00:58,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2023-12-21 05:00:58,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:00:58,292 INFO L195 NwaCegarLoop]: trace histogram [150, 128, 22, 1, 1, 1, 1, 1] [2023-12-21 05:00:58,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 05:00:58,505 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,SelfDestructingSolverStorable13 [2023-12-21 05:00:58,505 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:00:58,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:00:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1496493088, now seen corresponding path program 10 times [2023-12-21 05:00:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:00:58,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327868129] [2023-12-21 05:00:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:00:58,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:00:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 05:01:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 0 proven. 22500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:01:08,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 05:01:08,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327868129] [2023-12-21 05:01:08,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327868129] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 05:01:08,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070539363] [2023-12-21 05:01:08,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 05:01:08,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 05:01:08,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 05:01:08,643 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) [2023-12-21 05:01:08,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 05:01:08,825 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 05:01:08,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 05:01:08,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 959 conjuncts, 153 conjunts are in the unsatisfiable core [2023-12-21 05:01:08,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 05:01:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 0 proven. 22500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:01:16,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 05:01:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 22500 backedges. 0 proven. 22500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 05:01:34,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070539363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 05:01:34,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 05:01:34,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [152, 152, 152] total 454 [2023-12-21 05:01:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830941538] [2023-12-21 05:01:34,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 05:01:34,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 455 states [2023-12-21 05:01:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 05:01:34,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 455 interpolants. [2023-12-21 05:01:34,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92110, Invalid=114460, Unknown=0, NotChecked=0, Total=206570 [2023-12-21 05:01:34,591 INFO L87 Difference]: Start difference. First operand 562 states and 840 transitions. Second operand has 455 states, 455 states have (on average 1.9978021978021978) internal successors, (909), 454 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:09:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 05:09:58,213 INFO L93 Difference]: Finished difference Result 38206 states and 57387 transitions. [2023-12-21 05:09:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 304 states. [2023-12-21 05:09:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 455 states, 455 states have (on average 1.9978021978021978) internal successors, (909), 454 states have internal predecessors, (909), 0 states have call successors, (0), 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 305 [2023-12-21 05:09:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 05:09:58,266 INFO L225 Difference]: With dead ends: 38206 [2023-12-21 05:09:58,266 INFO L226 Difference]: Without dead ends: 38202 [2023-12-21 05:09:58,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90749 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=92110, Invalid=114460, Unknown=0, NotChecked=0, Total=206570 [2023-12-21 05:09:58,285 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 05:09:58,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 05:09:58,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38202 states. [2023-12-21 05:10:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38202 to 610. [2023-12-21 05:10:19,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.4975369458128078) internal successors, (912), 609 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:19,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 912 transitions. [2023-12-21 05:10:19,702 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 912 transitions. Word has length 305 [2023-12-21 05:10:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 05:10:19,703 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 912 transitions. [2023-12-21 05:10:19,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 455 states, 455 states have (on average 1.9978021978021978) internal successors, (909), 454 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 05:10:19,703 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 912 transitions. [2023-12-21 05:10:19,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2023-12-21 05:10:19,709 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 05:10:19,709 INFO L195 NwaCegarLoop]: trace histogram [258, 214, 44, 1, 1, 1, 1, 1] [2023-12-21 05:10:19,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 05:10:19,915 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,SelfDestructingSolverStorable14 [2023-12-21 05:10:19,915 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 05:10:19,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 05:10:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash -624407132, now seen corresponding path program 11 times [2023-12-21 05:10:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 05:10:19,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014169831] [2023-12-21 05:10:19,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 05:10:19,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 05:10:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2023-12-21 05:10:43,527 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 05:10:43,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 05:10:43,527 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 522 with TraceHistMax 258,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 233 known predicates. [2023-12-21 05:10:43,530 INFO L445 BasicCegarLoop]: Path program histogram: [11, 2, 1, 1, 1] [2023-12-21 05:10:43,532 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 05:10:43,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 05:10:43 BoogieIcfgContainer [2023-12-21 05:10:43,533 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 05:10:43,533 INFO L158 Benchmark]: Toolchain (without parser) took 871288.24ms. Allocated memory was 300.9MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 263.3MB in the beginning and 1.1GB in the end (delta: -806.0MB). Peak memory consumption was 456.8MB. Max. memory is 8.0GB. [2023-12-21 05:10:43,533 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 208.7MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 05:10:43,533 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.01ms. Allocated memory is still 300.9MB. Free memory was 263.0MB in the beginning and 252.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 05:10:43,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.72ms. Allocated memory is still 300.9MB. Free memory was 252.0MB in the beginning and 250.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 05:10:43,534 INFO L158 Benchmark]: Boogie Preprocessor took 26.93ms. Allocated memory is still 300.9MB. Free memory was 250.9MB in the beginning and 249.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 05:10:43,534 INFO L158 Benchmark]: RCFGBuilder took 215.30ms. Allocated memory is still 300.9MB. Free memory was 248.8MB in the beginning and 239.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-12-21 05:10:43,534 INFO L158 Benchmark]: TraceAbstraction took 870833.30ms. Allocated memory was 300.9MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 238.9MB in the beginning and 1.1GB in the end (delta: -830.3MB). Peak memory consumption was 432.7MB. Max. memory is 8.0GB. [2023-12-21 05:10:43,544 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 [2023-12-21 05:10:43,544 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 208.7MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.01ms. Allocated memory is still 300.9MB. Free memory was 263.0MB in the beginning and 252.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 20.72ms. Allocated memory is still 300.9MB. Free memory was 252.0MB in the beginning and 250.9MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.93ms. Allocated memory is still 300.9MB. Free memory was 250.9MB in the beginning and 249.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 215.30ms. Allocated memory is still 300.9MB. Free memory was 248.8MB in the beginning and 239.4MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 870833.30ms. Allocated memory was 300.9MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 238.9MB in the beginning and 1.1GB in the end (delta: -830.3MB). Peak memory consumption was 432.7MB. 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: 14]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 14). Cancelled while NwaCegarLoop was analyzing trace of length 522 with TraceHistMax 258,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateComparison was comparing new predicate (quantifier-free) to 233 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 870.8s, OverallIterations: 16, TraceHistogramMax: 258, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 710.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 240 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 1785 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4697 IncrementalHoareTripleChecker+Invalid, 6482 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1785 mSolverCounterUnsat, 64 mSDtfsCounter, 4697 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3180 GetRequests, 1313 SyntacticMatches, 0 SemanticMatches, 1867 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238652 ImplicationChecksByTransitivity, 82.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=610occurred in iteration=15, InterpolantAutomatonStates: 1275, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 36.6s AutomataMinimizationTime, 15 MinimizatonAttempts, 94433 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 95.1s InterpolantComputationTime, 2576 NumberOfCodeBlocks, 2576 NumberOfCodeBlocksAsserted, 279 NumberOfCheckSat, 3818 ConstructedInterpolants, 0 QuantifiedInterpolants, 21084 SizeOfPredicates, 26 NumberOfNonLiveVariables, 4408 ConjunctsInSsa, 648 ConjunctsInUnsatCore, 41 InterpolantComputations, 2 PerfectInterpolantSequences, 0/176715 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