/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:50:06,693 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:50:06,762 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 17:50:06,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:50:06,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:50:06,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:50:06,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:50:06,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:50:06,788 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:50:06,791 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:50:06,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:50:06,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:50:06,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:50:06,793 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:50:06,793 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:50:06,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:50:06,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:50:06,793 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:50:06,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:50:06,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:50:06,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:50:06,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:50:06,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:50:06,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:50:06,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:50:06,795 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:50:06,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:50:06,796 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:50:06,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:50:06,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:50:06,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:50:06,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:50:06,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:50:06,797 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:50:06,797 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:50:06,797 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:50:06,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:50:06,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:50:06,798 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:50:06,798 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:50:06,798 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:50:06,798 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:50:06,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:50:06,799 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:50:06,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:50:06,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:50:07,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:50:07,000 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:50:07,001 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:50:07,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-15 17:50:08,029 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:50:08,416 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:50:08,417 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-15 17:50:08,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984494f75/50feabfd63f54d5586491f2d1758ffec/FLAGa61a96d30 [2023-12-15 17:50:08,457 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984494f75/50feabfd63f54d5586491f2d1758ffec [2023-12-15 17:50:08,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:50:08,459 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:50:08,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:50:08,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:50:08,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:50:08,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:50:08" (1/1) ... [2023-12-15 17:50:08,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a40a940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:08, skipping insertion in model container [2023-12-15 17:50:08,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:50:08" (1/1) ... [2023-12-15 17:50:08,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:50:08,774 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c[6450,6463] [2023-12-15 17:50:08,790 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c[7292,7305] [2023-12-15 17:50:09,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:50:09,283 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:50:09,310 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c[6450,6463] [2023-12-15 17:50:09,311 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c[7292,7305] [2023-12-15 17:50:09,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:50:09,603 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:50:09,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09 WrapperNode [2023-12-15 17:50:09,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:50:09,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:50:09,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:50:09,605 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:50:09,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:09,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:09,824 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4980 [2023-12-15 17:50:09,825 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:50:09,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:50:09,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:50:09,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:50:09,833 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:09,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:09,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:10,037 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]. [2023-12-15 17:50:10,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:10,037 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:10,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:10,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:10,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:10,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:10,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:50:10,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:50:10,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:50:10,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:50:10,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (1/1) ... [2023-12-15 17:50:10,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:50:10,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:50:10,255 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) [2023-12-15 17:50:10,271 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 [2023-12-15 17:50:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:50:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:50:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:50:10,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:50:10,372 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:50:10,374 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:50:13,250 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:50:13,293 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:50:13,293 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 17:50:13,293 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:50:13 BoogieIcfgContainer [2023-12-15 17:50:13,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:50:13,295 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:50:13,295 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:50:13,297 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:50:13,297 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:50:08" (1/3) ... [2023-12-15 17:50:13,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a96490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:50:13, skipping insertion in model container [2023-12-15 17:50:13,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:50:09" (2/3) ... [2023-12-15 17:50:13,298 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a96490 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:50:13, skipping insertion in model container [2023-12-15 17:50:13,298 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:50:13" (3/3) ... [2023-12-15 17:50:13,298 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label07.c [2023-12-15 17:50:13,309 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:50:13,309 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:50:13,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:50:13,351 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;@6d3e2456, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:50:13,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:50:13,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:13,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-15 17:50:13,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:13,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-15 17:50:13,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:13,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:13,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1085854336, now seen corresponding path program 1 times [2023-12-15 17:50:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:13,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24498820] [2023-12-15 17:50:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:13,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:13,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24498820] [2023-12-15 17:50:13,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24498820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:13,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:13,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:50:13,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901027634] [2023-12-15 17:50:13,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:13,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:13,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:13,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:13,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:13,510 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:16,560 INFO L93 Difference]: Finished difference Result 2351 states and 4652 transitions. [2023-12-15 17:50:16,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:16,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-15 17:50:16,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:16,584 INFO L225 Difference]: With dead ends: 2351 [2023-12-15 17:50:16,585 INFO L226 Difference]: Without dead ends: 1556 [2023-12-15 17:50:16,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:16,591 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 897 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2282 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 3280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:16,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 163 Invalid, 3280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2282 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-15 17:50:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-15 17:50:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2023-12-15 17:50:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.8655083655083655) internal successors, (2899), 1555 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2899 transitions. [2023-12-15 17:50:16,676 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2899 transitions. Word has length 6 [2023-12-15 17:50:16,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:16,676 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2899 transitions. [2023-12-15 17:50:16,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2899 transitions. [2023-12-15 17:50:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-15 17:50:16,677 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:16,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:16,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:50:16,678 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:16,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:16,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2107674030, now seen corresponding path program 1 times [2023-12-15 17:50:16,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:16,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379891832] [2023-12-15 17:50:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:16,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:16,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:16,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379891832] [2023-12-15 17:50:16,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379891832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:16,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:16,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:50:16,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778000782] [2023-12-15 17:50:16,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:50:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:50:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:50:16,903 INFO L87 Difference]: Start difference. First operand 1556 states and 2899 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:16,941 INFO L93 Difference]: Finished difference Result 1590 states and 2951 transitions. [2023-12-15 17:50:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:50:16,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-15 17:50:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:16,946 INFO L225 Difference]: With dead ends: 1590 [2023-12-15 17:50:16,946 INFO L226 Difference]: Without dead ends: 1556 [2023-12-15 17:50:16,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:50:16,948 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:16,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2023-12-15 17:50:16,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2023-12-15 17:50:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1554 states have (on average 1.8552123552123552) internal successors, (2883), 1555 states have internal predecessors, (2883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:16,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2883 transitions. [2023-12-15 17:50:16,971 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2883 transitions. Word has length 17 [2023-12-15 17:50:16,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:16,972 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2883 transitions. [2023-12-15 17:50:16,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:16,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2883 transitions. [2023-12-15 17:50:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-15 17:50:16,973 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:16,973 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:16,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:50:16,974 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:16,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:16,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1024653184, now seen corresponding path program 1 times [2023-12-15 17:50:16,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:16,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281634495] [2023-12-15 17:50:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:16,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281634495] [2023-12-15 17:50:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281634495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:17,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:17,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:50:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76284629] [2023-12-15 17:50:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:17,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:50:17,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:50:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:50:17,052 INFO L87 Difference]: Start difference. First operand 1556 states and 2883 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:17,123 INFO L93 Difference]: Finished difference Result 1742 states and 3177 transitions. [2023-12-15 17:50:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-15 17:50:17,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-12-15 17:50:17,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:17,129 INFO L225 Difference]: With dead ends: 1742 [2023-12-15 17:50:17,129 INFO L226 Difference]: Without dead ends: 1711 [2023-12-15 17:50:17,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:50:17,133 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:17,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:17,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2023-12-15 17:50:17,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1585. [2023-12-15 17:50:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1583 states have (on average 1.85028427037271) internal successors, (2929), 1584 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2929 transitions. [2023-12-15 17:50:17,165 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2929 transitions. Word has length 32 [2023-12-15 17:50:17,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:17,169 INFO L495 AbstractCegarLoop]: Abstraction has 1585 states and 2929 transitions. [2023-12-15 17:50:17,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2929 transitions. [2023-12-15 17:50:17,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 17:50:17,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:17,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:17,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:50:17,173 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:17,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1266889168, now seen corresponding path program 1 times [2023-12-15 17:50:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:17,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463106624] [2023-12-15 17:50:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:17,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463106624] [2023-12-15 17:50:17,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463106624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:17,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:17,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:50:17,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678209753] [2023-12-15 17:50:17,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:17,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:17,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:17,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:17,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:17,243 INFO L87 Difference]: Start difference. First operand 1585 states and 2929 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:17,271 INFO L93 Difference]: Finished difference Result 1694 states and 3100 transitions. [2023-12-15 17:50:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:17,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-15 17:50:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:17,276 INFO L225 Difference]: With dead ends: 1694 [2023-12-15 17:50:17,277 INFO L226 Difference]: Without dead ends: 1634 [2023-12-15 17:50:17,277 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 [2023-12-15 17:50:17,282 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:17,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2023-12-15 17:50:17,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 1630. [2023-12-15 17:50:17,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.8409090909090908) internal successors, (2997), 1629 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2997 transitions. [2023-12-15 17:50:17,311 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2997 transitions. Word has length 34 [2023-12-15 17:50:17,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:17,312 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2997 transitions. [2023-12-15 17:50:17,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2997 transitions. [2023-12-15 17:50:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-15 17:50:17,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:17,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:17,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:50:17,314 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:17,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:17,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1264744216, now seen corresponding path program 1 times [2023-12-15 17:50:17,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:17,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673977125] [2023-12-15 17:50:17,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:17,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:17,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:17,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673977125] [2023-12-15 17:50:17,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673977125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:17,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:17,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:50:17,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139029602] [2023-12-15 17:50:17,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:17,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:50:17,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:17,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:50:17,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:50:17,436 INFO L87 Difference]: Start difference. First operand 1630 states and 2997 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:17,491 INFO L93 Difference]: Finished difference Result 1737 states and 3161 transitions. [2023-12-15 17:50:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 17:50:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-12-15 17:50:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:17,496 INFO L225 Difference]: With dead ends: 1737 [2023-12-15 17:50:17,496 INFO L226 Difference]: Without dead ends: 1632 [2023-12-15 17:50:17,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:50:17,499 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 4420 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:17,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4420 Valid, 1588 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:17,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-12-15 17:50:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1630. [2023-12-15 17:50:17,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1628 states have (on average 1.8396805896805897) internal successors, (2995), 1629 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2995 transitions. [2023-12-15 17:50:17,528 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2995 transitions. Word has length 34 [2023-12-15 17:50:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:17,529 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2995 transitions. [2023-12-15 17:50:17,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2995 transitions. [2023-12-15 17:50:17,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-15 17:50:17,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:17,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:17,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:50:17,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:17,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash -680719856, now seen corresponding path program 1 times [2023-12-15 17:50:17,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:17,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429326865] [2023-12-15 17:50:17,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:17,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:17,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:17,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429326865] [2023-12-15 17:50:17,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429326865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:17,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:17,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:50:17,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241982925] [2023-12-15 17:50:17,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:17,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:50:17,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:17,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:50:17,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:50:17,625 INFO L87 Difference]: Start difference. First operand 1630 states and 2995 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:17,655 INFO L93 Difference]: Finished difference Result 1638 states and 3004 transitions. [2023-12-15 17:50:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:50:17,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-12-15 17:50:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:17,662 INFO L225 Difference]: With dead ends: 1638 [2023-12-15 17:50:17,662 INFO L226 Difference]: Without dead ends: 1636 [2023-12-15 17:50:17,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:50:17,664 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:17,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2023-12-15 17:50:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1634. [2023-12-15 17:50:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1632 states have (on average 1.8370098039215685) internal successors, (2998), 1633 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2998 transitions. [2023-12-15 17:50:17,692 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2998 transitions. Word has length 35 [2023-12-15 17:50:17,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:17,693 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2998 transitions. [2023-12-15 17:50:17,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2998 transitions. [2023-12-15 17:50:17,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-15 17:50:17,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:17,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:17,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:50:17,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:17,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash -665802232, now seen corresponding path program 1 times [2023-12-15 17:50:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:17,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751725286] [2023-12-15 17:50:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:17,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:17,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:17,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:17,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751725286] [2023-12-15 17:50:17,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751725286] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:17,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:17,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:50:17,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507884665] [2023-12-15 17:50:17,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:17,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:17,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:17,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:17,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:17,719 INFO L87 Difference]: Start difference. First operand 1634 states and 2998 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:17,744 INFO L93 Difference]: Finished difference Result 1836 states and 3298 transitions. [2023-12-15 17:50:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-15 17:50:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:17,750 INFO L225 Difference]: With dead ends: 1836 [2023-12-15 17:50:17,750 INFO L226 Difference]: Without dead ends: 1727 [2023-12-15 17:50:17,750 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 [2023-12-15 17:50:17,751 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:17,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-12-15 17:50:17,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1725. [2023-12-15 17:50:17,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1725 states, 1723 states have (on average 1.81601857225769) internal successors, (3129), 1724 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 3129 transitions. [2023-12-15 17:50:17,779 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 3129 transitions. Word has length 36 [2023-12-15 17:50:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:17,780 INFO L495 AbstractCegarLoop]: Abstraction has 1725 states and 3129 transitions. [2023-12-15 17:50:17,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 3129 transitions. [2023-12-15 17:50:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-15 17:50:17,780 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:17,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:17,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:50:17,780 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:17,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1554535672, now seen corresponding path program 1 times [2023-12-15 17:50:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:17,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864738525] [2023-12-15 17:50:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:17,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:17,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:17,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864738525] [2023-12-15 17:50:17,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864738525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:17,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:17,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:50:17,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496838987] [2023-12-15 17:50:17,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:17,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:17,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:17,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:17,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:17,807 INFO L87 Difference]: Start difference. First operand 1725 states and 3129 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:17,831 INFO L93 Difference]: Finished difference Result 2093 states and 3663 transitions. [2023-12-15 17:50:17,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:17,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-15 17:50:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:17,838 INFO L225 Difference]: With dead ends: 2093 [2023-12-15 17:50:17,838 INFO L226 Difference]: Without dead ends: 1893 [2023-12-15 17:50:17,839 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 [2023-12-15 17:50:17,840 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:17,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:17,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2023-12-15 17:50:17,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1891. [2023-12-15 17:50:17,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1891 states, 1889 states have (on average 1.7781895182636316) internal successors, (3359), 1890 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 3359 transitions. [2023-12-15 17:50:17,871 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 3359 transitions. Word has length 36 [2023-12-15 17:50:17,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:17,872 INFO L495 AbstractCegarLoop]: Abstraction has 1891 states and 3359 transitions. [2023-12-15 17:50:17,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 3359 transitions. [2023-12-15 17:50:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-15 17:50:17,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:17,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:17,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:50:17,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:17,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1381367059, now seen corresponding path program 1 times [2023-12-15 17:50:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296645241] [2023-12-15 17:50:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:17,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:17,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296645241] [2023-12-15 17:50:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296645241] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:17,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:17,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:50:17,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3457906] [2023-12-15 17:50:17,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:17,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:17,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:17,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:17,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:17,900 INFO L87 Difference]: Start difference. First operand 1891 states and 3359 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:17,927 INFO L93 Difference]: Finished difference Result 2282 states and 3933 transitions. [2023-12-15 17:50:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:17,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-12-15 17:50:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:17,933 INFO L225 Difference]: With dead ends: 2282 [2023-12-15 17:50:17,933 INFO L226 Difference]: Without dead ends: 2063 [2023-12-15 17:50:17,934 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 [2023-12-15 17:50:17,934 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:17,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-12-15 17:50:17,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2061. [2023-12-15 17:50:17,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2061 states, 2059 states have (on average 1.746964545896066) internal successors, (3597), 2060 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 3597 transitions. [2023-12-15 17:50:17,997 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 3597 transitions. Word has length 38 [2023-12-15 17:50:17,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:17,998 INFO L495 AbstractCegarLoop]: Abstraction has 2061 states and 3597 transitions. [2023-12-15 17:50:17,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:17,998 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 3597 transitions. [2023-12-15 17:50:17,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-15 17:50:17,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:17,998 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:17,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:50:17,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:17,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:17,999 INFO L85 PathProgramCache]: Analyzing trace with hash 514089809, now seen corresponding path program 1 times [2023-12-15 17:50:17,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:17,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483276524] [2023-12-15 17:50:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:18,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 17:50:18,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:18,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483276524] [2023-12-15 17:50:18,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483276524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:18,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:18,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:50:18,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560878955] [2023-12-15 17:50:18,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:18,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:50:18,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:18,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:50:18,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:50:18,074 INFO L87 Difference]: Start difference. First operand 2061 states and 3597 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2023-12-15 17:50:18,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:18,156 INFO L93 Difference]: Finished difference Result 3785 states and 6045 transitions. [2023-12-15 17:50:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 17:50:18,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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 50 [2023-12-15 17:50:18,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:18,166 INFO L225 Difference]: With dead ends: 3785 [2023-12-15 17:50:18,166 INFO L226 Difference]: Without dead ends: 3251 [2023-12-15 17:50:18,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:50:18,168 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 3051 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:18,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3138 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3251 states. [2023-12-15 17:50:18,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3251 to 2593. [2023-12-15 17:50:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2591 states have (on average 1.6769587032033964) internal successors, (4345), 2592 states have internal predecessors, (4345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 4345 transitions. [2023-12-15 17:50:18,216 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 4345 transitions. Word has length 50 [2023-12-15 17:50:18,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:18,216 INFO L495 AbstractCegarLoop]: Abstraction has 2593 states and 4345 transitions. [2023-12-15 17:50:18,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 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) [2023-12-15 17:50:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 4345 transitions. [2023-12-15 17:50:18,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-15 17:50:18,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:18,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:18,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:50:18,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:18,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:18,218 INFO L85 PathProgramCache]: Analyzing trace with hash -374643631, now seen corresponding path program 1 times [2023-12-15 17:50:18,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:18,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21736432] [2023-12-15 17:50:18,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:18,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 17:50:18,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:18,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21736432] [2023-12-15 17:50:18,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21736432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:18,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:18,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:50:18,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320304874] [2023-12-15 17:50:18,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:18,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:50:18,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:50:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:50:18,285 INFO L87 Difference]: Start difference. First operand 2593 states and 4345 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:18,370 INFO L93 Difference]: Finished difference Result 4317 states and 6793 transitions. [2023-12-15 17:50:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 17:50:18,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-12-15 17:50:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:18,392 INFO L225 Difference]: With dead ends: 4317 [2023-12-15 17:50:18,392 INFO L226 Difference]: Without dead ends: 3783 [2023-12-15 17:50:18,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:50:18,394 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:18,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:18,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2023-12-15 17:50:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3393. [2023-12-15 17:50:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3391 states have (on average 1.6092598053671483) internal successors, (5457), 3392 states have internal predecessors, (5457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 5457 transitions. [2023-12-15 17:50:18,459 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 5457 transitions. Word has length 50 [2023-12-15 17:50:18,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:18,460 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 5457 transitions. [2023-12-15 17:50:18,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 5457 transitions. [2023-12-15 17:50:18,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-15 17:50:18,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:18,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:18,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:50:18,461 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:18,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:18,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1477767, now seen corresponding path program 1 times [2023-12-15 17:50:18,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:18,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694428539] [2023-12-15 17:50:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:18,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:18,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:18,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694428539] [2023-12-15 17:50:18,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694428539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:18,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:18,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:50:18,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292338226] [2023-12-15 17:50:18,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:18,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:18,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:18,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:18,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:18,531 INFO L87 Difference]: Start difference. First operand 3393 states and 5457 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:18,570 INFO L93 Difference]: Finished difference Result 4756 states and 7407 transitions. [2023-12-15 17:50:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:18,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-15 17:50:18,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:18,575 INFO L225 Difference]: With dead ends: 4756 [2023-12-15 17:50:18,575 INFO L226 Difference]: Without dead ends: 2890 [2023-12-15 17:50:18,577 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 [2023-12-15 17:50:18,578 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:18,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:18,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2023-12-15 17:50:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888. [2023-12-15 17:50:18,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2886 states have (on average 1.6479556479556479) internal successors, (4756), 2887 states have internal predecessors, (4756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4756 transitions. [2023-12-15 17:50:18,644 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4756 transitions. Word has length 52 [2023-12-15 17:50:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:18,644 INFO L495 AbstractCegarLoop]: Abstraction has 2888 states and 4756 transitions. [2023-12-15 17:50:18,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4756 transitions. [2023-12-15 17:50:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-15 17:50:18,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:18,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:18,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:50:18,646 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:18,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:18,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1376481802, now seen corresponding path program 1 times [2023-12-15 17:50:18,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:18,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359384390] [2023-12-15 17:50:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:18,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:50:18,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:18,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359384390] [2023-12-15 17:50:18,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359384390] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:18,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:18,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 17:50:18,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610912062] [2023-12-15 17:50:18,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:18,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 17:50:18,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:18,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 17:50:18,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:50:18,710 INFO L87 Difference]: Start difference. First operand 2888 states and 4756 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:18,789 INFO L93 Difference]: Finished difference Result 4048 states and 6416 transitions. [2023-12-15 17:50:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 17:50:18,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2023-12-15 17:50:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:18,794 INFO L225 Difference]: With dead ends: 4048 [2023-12-15 17:50:18,794 INFO L226 Difference]: Without dead ends: 3662 [2023-12-15 17:50:18,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 17:50:18,796 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 3043 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:18,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3138 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3662 states. [2023-12-15 17:50:18,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3662 to 3272. [2023-12-15 17:50:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 3270 states have (on average 1.620795107033639) internal successors, (5300), 3271 states have internal predecessors, (5300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 5300 transitions. [2023-12-15 17:50:18,859 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 5300 transitions. Word has length 52 [2023-12-15 17:50:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:18,859 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 5300 transitions. [2023-12-15 17:50:18,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 5300 transitions. [2023-12-15 17:50:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-15 17:50:18,860 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:18,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:18,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:50:18,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:18,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:18,861 INFO L85 PathProgramCache]: Analyzing trace with hash 717664433, now seen corresponding path program 1 times [2023-12-15 17:50:18,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:18,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824727573] [2023-12-15 17:50:18,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:18,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:18,926 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:18,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824727573] [2023-12-15 17:50:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824727573] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:50:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313467426] [2023-12-15 17:50:18,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:18,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:18,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:18,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:18,927 INFO L87 Difference]: Start difference. First operand 3272 states and 5300 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:19,006 INFO L93 Difference]: Finished difference Result 4140 states and 6526 transitions. [2023-12-15 17:50:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:19,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2023-12-15 17:50:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:19,009 INFO L225 Difference]: With dead ends: 4140 [2023-12-15 17:50:19,010 INFO L226 Difference]: Without dead ends: 2410 [2023-12-15 17:50:19,011 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 [2023-12-15 17:50:19,011 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:19,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2023-12-15 17:50:19,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2408. [2023-12-15 17:50:19,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 2406 states have (on average 1.686616791354946) internal successors, (4058), 2407 states have internal predecessors, (4058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 4058 transitions. [2023-12-15 17:50:19,049 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 4058 transitions. Word has length 53 [2023-12-15 17:50:19,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:19,049 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 4058 transitions. [2023-12-15 17:50:19,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:19,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 4058 transitions. [2023-12-15 17:50:19,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-15 17:50:19,050 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:19,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:19,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:50:19,050 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:19,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:19,050 INFO L85 PathProgramCache]: Analyzing trace with hash -562231777, now seen corresponding path program 1 times [2023-12-15 17:50:19,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:19,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720193994] [2023-12-15 17:50:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:19,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:19,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:19,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720193994] [2023-12-15 17:50:19,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720193994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:19,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:19,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:50:19,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684008605] [2023-12-15 17:50:19,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:19,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:19,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:19,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:19,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:19,113 INFO L87 Difference]: Start difference. First operand 2408 states and 4058 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:19,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:19,137 INFO L93 Difference]: Finished difference Result 2844 states and 4663 transitions. [2023-12-15 17:50:19,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:19,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-15 17:50:19,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:19,140 INFO L225 Difference]: With dead ends: 2844 [2023-12-15 17:50:19,140 INFO L226 Difference]: Without dead ends: 1978 [2023-12-15 17:50:19,142 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 [2023-12-15 17:50:19,143 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:19,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:50:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2023-12-15 17:50:19,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1976. [2023-12-15 17:50:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1974 states have (on average 1.745694022289767) internal successors, (3446), 1975 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 3446 transitions. [2023-12-15 17:50:19,171 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 3446 transitions. Word has length 55 [2023-12-15 17:50:19,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:19,171 INFO L495 AbstractCegarLoop]: Abstraction has 1976 states and 3446 transitions. [2023-12-15 17:50:19,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 3446 transitions. [2023-12-15 17:50:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-15 17:50:19,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:19,172 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:19,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:50:19,172 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:19,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:19,172 INFO L85 PathProgramCache]: Analyzing trace with hash -165946099, now seen corresponding path program 1 times [2023-12-15 17:50:19,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:19,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835897658] [2023-12-15 17:50:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:19,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:21,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835897658] [2023-12-15 17:50:21,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835897658] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:50:21,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905826172] [2023-12-15 17:50:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:21,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:21,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:50:21,061 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) [2023-12-15 17:50:21,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-15 17:50:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:21,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 17:50:21,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:50:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:50:21,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:50:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:50:21,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905826172] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:50:21,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:50:21,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-15 17:50:21,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591743522] [2023-12-15 17:50:21,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:50:21,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 17:50:21,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:21,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 17:50:21,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-15 17:50:21,409 INFO L87 Difference]: Start difference. First operand 1976 states and 3446 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:23,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:23,850 INFO L93 Difference]: Finished difference Result 4219 states and 6394 transitions. [2023-12-15 17:50:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-15 17:50:23,850 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 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 57 [2023-12-15 17:50:23,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:23,855 INFO L225 Difference]: With dead ends: 4219 [2023-12-15 17:50:23,856 INFO L226 Difference]: Without dead ends: 3785 [2023-12-15 17:50:23,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-12-15 17:50:23,858 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 17255 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17255 SdHoareTripleChecker+Valid, 6286 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:23,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17255 Valid, 6286 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:50:23,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2023-12-15 17:50:23,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3597. [2023-12-15 17:50:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3595 states have (on average 1.5207232267037551) internal successors, (5467), 3596 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 5467 transitions. [2023-12-15 17:50:23,936 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 5467 transitions. Word has length 57 [2023-12-15 17:50:23,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:23,937 INFO L495 AbstractCegarLoop]: Abstraction has 3597 states and 5467 transitions. [2023-12-15 17:50:23,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 5467 transitions. [2023-12-15 17:50:23,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 17:50:23,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:23,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:23,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-15 17:50:24,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-15 17:50:24,144 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:24,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:24,144 INFO L85 PathProgramCache]: Analyzing trace with hash 451486466, now seen corresponding path program 1 times [2023-12-15 17:50:24,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:24,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428914177] [2023-12-15 17:50:24,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:24,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:24,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:24,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428914177] [2023-12-15 17:50:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428914177] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:50:24,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992445114] [2023-12-15 17:50:24,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:24,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:24,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:50:24,860 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) [2023-12-15 17:50:24,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-15 17:50:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:24,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:50:24,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:50:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:25,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:50:25,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:25,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992445114] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:50:25,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:50:25,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-12-15 17:50:25,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054005984] [2023-12-15 17:50:25,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:50:25,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-15 17:50:25,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:25,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-15 17:50:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-12-15 17:50:25,964 INFO L87 Difference]: Start difference. First operand 3597 states and 5467 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:26,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:26,741 INFO L93 Difference]: Finished difference Result 7715 states and 10657 transitions. [2023-12-15 17:50:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-15 17:50:26,742 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-15 17:50:26,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:26,750 INFO L225 Difference]: With dead ends: 7715 [2023-12-15 17:50:26,750 INFO L226 Difference]: Without dead ends: 5937 [2023-12-15 17:50:26,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-12-15 17:50:26,753 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 20613 mSDsluCounter, 7690 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20613 SdHoareTripleChecker+Valid, 9183 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:26,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20613 Valid, 9183 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:50:26,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5937 states. [2023-12-15 17:50:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5937 to 5551. [2023-12-15 17:50:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 5549 states have (on average 1.418453775455037) internal successors, (7871), 5550 states have internal predecessors, (7871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 7871 transitions. [2023-12-15 17:50:26,874 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 7871 transitions. Word has length 58 [2023-12-15 17:50:26,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:26,874 INFO L495 AbstractCegarLoop]: Abstraction has 5551 states and 7871 transitions. [2023-12-15 17:50:26,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 7871 transitions. [2023-12-15 17:50:26,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 17:50:26,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:26,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:26,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-15 17:50:27,075 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,SelfDestructingSolverStorable16 [2023-12-15 17:50:27,076 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:27,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:27,076 INFO L85 PathProgramCache]: Analyzing trace with hash -71117744, now seen corresponding path program 1 times [2023-12-15 17:50:27,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:27,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069112304] [2023-12-15 17:50:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:27,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:27,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:27,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069112304] [2023-12-15 17:50:27,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069112304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:50:27,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948652654] [2023-12-15 17:50:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:27,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:27,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:50:27,244 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) [2023-12-15 17:50:27,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-15 17:50:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:27,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:50:27,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:50:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:27,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:50:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:28,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948652654] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:50:28,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:50:28,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-12-15 17:50:28,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476342364] [2023-12-15 17:50:28,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:50:28,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-15 17:50:28,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:28,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-15 17:50:28,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-12-15 17:50:28,265 INFO L87 Difference]: Start difference. First operand 5551 states and 7871 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:28,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:28,803 INFO L93 Difference]: Finished difference Result 12512 states and 16567 transitions. [2023-12-15 17:50:28,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-15 17:50:28,803 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-15 17:50:28,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:28,814 INFO L225 Difference]: With dead ends: 12512 [2023-12-15 17:50:28,814 INFO L226 Difference]: Without dead ends: 9090 [2023-12-15 17:50:28,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-12-15 17:50:28,821 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 6258 mSDsluCounter, 6266 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6258 SdHoareTripleChecker+Valid, 7758 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:28,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6258 Valid, 7758 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:50:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9090 states. [2023-12-15 17:50:29,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9090 to 8852. [2023-12-15 17:50:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8852 states, 8850 states have (on average 1.3524293785310735) internal successors, (11969), 8851 states have internal predecessors, (11969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8852 states to 8852 states and 11969 transitions. [2023-12-15 17:50:29,123 INFO L78 Accepts]: Start accepts. Automaton has 8852 states and 11969 transitions. Word has length 58 [2023-12-15 17:50:29,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:29,123 INFO L495 AbstractCegarLoop]: Abstraction has 8852 states and 11969 transitions. [2023-12-15 17:50:29,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 8852 states and 11969 transitions. [2023-12-15 17:50:29,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-15 17:50:29,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:29,124 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:29,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-15 17:50:29,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-15 17:50:29,334 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:29,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:29,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2040527024, now seen corresponding path program 1 times [2023-12-15 17:50:29,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:29,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373323407] [2023-12-15 17:50:29,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:29,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:29,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373323407] [2023-12-15 17:50:29,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373323407] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:50:29,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691743564] [2023-12-15 17:50:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:29,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:29,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:50:29,592 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) [2023-12-15 17:50:29,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-15 17:50:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:29,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:50:29,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:50:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:30,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:50:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:30,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691743564] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:50:30,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:50:30,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-12-15 17:50:30,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324327383] [2023-12-15 17:50:30,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:50:30,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-15 17:50:30,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:30,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-15 17:50:30,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-12-15 17:50:30,671 INFO L87 Difference]: Start difference. First operand 8852 states and 11969 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:31,335 INFO L93 Difference]: Finished difference Result 15747 states and 20577 transitions. [2023-12-15 17:50:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-15 17:50:31,336 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-12-15 17:50:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:31,348 INFO L225 Difference]: With dead ends: 15747 [2023-12-15 17:50:31,348 INFO L226 Difference]: Without dead ends: 9546 [2023-12-15 17:50:31,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-12-15 17:50:31,357 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 13354 mSDsluCounter, 6150 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13354 SdHoareTripleChecker+Valid, 7650 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:31,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13354 Valid, 7650 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-15 17:50:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9546 states. [2023-12-15 17:50:31,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9546 to 8964. [2023-12-15 17:50:31,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8964 states, 8962 states have (on average 1.3401026556572193) internal successors, (12010), 8963 states have internal predecessors, (12010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:31,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8964 states to 8964 states and 12010 transitions. [2023-12-15 17:50:31,582 INFO L78 Accepts]: Start accepts. Automaton has 8964 states and 12010 transitions. Word has length 58 [2023-12-15 17:50:31,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:31,582 INFO L495 AbstractCegarLoop]: Abstraction has 8964 states and 12010 transitions. [2023-12-15 17:50:31,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:31,582 INFO L276 IsEmpty]: Start isEmpty. Operand 8964 states and 12010 transitions. [2023-12-15 17:50:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-15 17:50:31,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:31,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:31,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-15 17:50:31,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:31,799 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:31,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:31,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1495852459, now seen corresponding path program 1 times [2023-12-15 17:50:31,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:31,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890414556] [2023-12-15 17:50:31,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:31,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:32,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:32,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890414556] [2023-12-15 17:50:32,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890414556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:50:32,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571751817] [2023-12-15 17:50:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:32,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:32,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:50:32,386 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) [2023-12-15 17:50:32,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-15 17:50:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:32,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 17:50:32,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:50:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:33,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:50:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:33,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571751817] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:50:33,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:50:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2023-12-15 17:50:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478119914] [2023-12-15 17:50:33,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:50:33,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-15 17:50:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-15 17:50:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2023-12-15 17:50:33,649 INFO L87 Difference]: Start difference. First operand 8964 states and 12010 transitions. Second operand has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:38,693 INFO L93 Difference]: Finished difference Result 15824 states and 20495 transitions. [2023-12-15 17:50:38,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-15 17:50:38,693 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-15 17:50:38,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:38,704 INFO L225 Difference]: With dead ends: 15824 [2023-12-15 17:50:38,704 INFO L226 Difference]: Without dead ends: 11056 [2023-12-15 17:50:38,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3199 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2207, Invalid=9135, Unknown=0, NotChecked=0, Total=11342 [2023-12-15 17:50:38,711 INFO L413 NwaCegarLoop]: 1513 mSDtfsCounter, 10685 mSDsluCounter, 23119 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10685 SdHoareTripleChecker+Valid, 24632 SdHoareTripleChecker+Invalid, 1718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:38,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10685 Valid, 24632 Invalid, 1718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-15 17:50:38,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11056 states. [2023-12-15 17:50:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11056 to 6362. [2023-12-15 17:50:38,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 6360 states have (on average 1.3809748427672957) internal successors, (8783), 6361 states have internal predecessors, (8783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 8783 transitions. [2023-12-15 17:50:38,908 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 8783 transitions. Word has length 59 [2023-12-15 17:50:38,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:38,908 INFO L495 AbstractCegarLoop]: Abstraction has 6362 states and 8783 transitions. [2023-12-15 17:50:38,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.647058823529412) internal successors, (158), 34 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 8783 transitions. [2023-12-15 17:50:38,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-15 17:50:38,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:38,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:38,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-15 17:50:39,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:39,114 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:39,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:39,115 INFO L85 PathProgramCache]: Analyzing trace with hash 397062514, now seen corresponding path program 1 times [2023-12-15 17:50:39,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:39,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874249297] [2023-12-15 17:50:39,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:39,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:39,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:39,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:39,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874249297] [2023-12-15 17:50:39,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874249297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:50:39,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617094125] [2023-12-15 17:50:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:39,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:39,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:50:39,626 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) [2023-12-15 17:50:39,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-15 17:50:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:39,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 17:50:39,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:50:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:40,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:50:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:41,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617094125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:50:41,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:50:41,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-12-15 17:50:41,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592291181] [2023-12-15 17:50:41,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:50:41,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-15 17:50:41,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:41,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-15 17:50:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-12-15 17:50:41,105 INFO L87 Difference]: Start difference. First operand 6362 states and 8783 transitions. Second operand has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:42,368 INFO L93 Difference]: Finished difference Result 7692 states and 10427 transitions. [2023-12-15 17:50:42,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-15 17:50:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 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 60 [2023-12-15 17:50:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:42,373 INFO L225 Difference]: With dead ends: 7692 [2023-12-15 17:50:42,374 INFO L226 Difference]: Without dead ends: 5088 [2023-12-15 17:50:42,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=533, Invalid=1819, Unknown=0, NotChecked=0, Total=2352 [2023-12-15 17:50:42,377 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 9612 mSDsluCounter, 14847 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9612 SdHoareTripleChecker+Valid, 16340 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:42,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9612 Valid, 16340 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 17:50:42,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5088 states. [2023-12-15 17:50:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5088 to 4984. [2023-12-15 17:50:42,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4984 states, 4982 states have (on average 1.4213167402649538) internal successors, (7081), 4983 states have internal predecessors, (7081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4984 states to 4984 states and 7081 transitions. [2023-12-15 17:50:42,522 INFO L78 Accepts]: Start accepts. Automaton has 4984 states and 7081 transitions. Word has length 60 [2023-12-15 17:50:42,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:42,523 INFO L495 AbstractCegarLoop]: Abstraction has 4984 states and 7081 transitions. [2023-12-15 17:50:42,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.580645161290323) internal successors, (142), 31 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:42,523 INFO L276 IsEmpty]: Start isEmpty. Operand 4984 states and 7081 transitions. [2023-12-15 17:50:42,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-15 17:50:42,524 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:42,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:42,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-15 17:50:42,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:42,727 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:42,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:42,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1391138053, now seen corresponding path program 1 times [2023-12-15 17:50:42,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:42,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595161384] [2023-12-15 17:50:42,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:42,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:42,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:42,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595161384] [2023-12-15 17:50:42,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595161384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:42,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:42,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:50:42,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532982348] [2023-12-15 17:50:42,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:42,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:42,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:42,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:42,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:42,784 INFO L87 Difference]: Start difference. First operand 4984 states and 7081 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:45,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:45,394 INFO L93 Difference]: Finished difference Result 7990 states and 12704 transitions. [2023-12-15 17:50:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:45,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-12-15 17:50:45,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:45,401 INFO L225 Difference]: With dead ends: 7990 [2023-12-15 17:50:45,402 INFO L226 Difference]: Without dead ends: 6486 [2023-12-15 17:50:45,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:45,404 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 795 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:45,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 560 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-15 17:50:45,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6486 states. [2023-12-15 17:50:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6486 to 6486. [2023-12-15 17:50:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6486 states, 6484 states have (on average 1.3912708204811846) internal successors, (9021), 6485 states have internal predecessors, (9021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6486 states to 6486 states and 9021 transitions. [2023-12-15 17:50:45,561 INFO L78 Accepts]: Start accepts. Automaton has 6486 states and 9021 transitions. Word has length 79 [2023-12-15 17:50:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:45,561 INFO L495 AbstractCegarLoop]: Abstraction has 6486 states and 9021 transitions. [2023-12-15 17:50:45,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 6486 states and 9021 transitions. [2023-12-15 17:50:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-12-15 17:50:45,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:45,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:45,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 17:50:45,562 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:45,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:45,563 INFO L85 PathProgramCache]: Analyzing trace with hash 39025430, now seen corresponding path program 1 times [2023-12-15 17:50:45,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597865714] [2023-12-15 17:50:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:45,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:45,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597865714] [2023-12-15 17:50:45,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597865714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:50:45,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:50:45,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:50:45,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314421766] [2023-12-15 17:50:45,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:50:45,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:50:45,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:45,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:50:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:45,608 INFO L87 Difference]: Start difference. First operand 6486 states and 9021 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:50:48,289 INFO L93 Difference]: Finished difference Result 12498 states and 18525 transitions. [2023-12-15 17:50:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:50:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2023-12-15 17:50:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:50:48,300 INFO L225 Difference]: With dead ends: 12498 [2023-12-15 17:50:48,300 INFO L226 Difference]: Without dead ends: 9492 [2023-12-15 17:50:48,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:50:48,306 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 985 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:50:48,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 618 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 17:50:48,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2023-12-15 17:50:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 9490. [2023-12-15 17:50:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9490 states, 9488 states have (on average 1.3604553119730185) internal successors, (12908), 9489 states have internal predecessors, (12908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9490 states to 9490 states and 12908 transitions. [2023-12-15 17:50:48,496 INFO L78 Accepts]: Start accepts. Automaton has 9490 states and 12908 transitions. Word has length 81 [2023-12-15 17:50:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:50:48,497 INFO L495 AbstractCegarLoop]: Abstraction has 9490 states and 12908 transitions. [2023-12-15 17:50:48,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:50:48,497 INFO L276 IsEmpty]: Start isEmpty. Operand 9490 states and 12908 transitions. [2023-12-15 17:50:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-15 17:50:48,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:50:48,498 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:50:48,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 17:50:48,499 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:50:48,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:50:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash -572483718, now seen corresponding path program 1 times [2023-12-15 17:50:48,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:50:48,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005807298] [2023-12-15 17:50:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:48,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:50:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:49,109 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:50:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005807298] [2023-12-15 17:50:49,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005807298] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:50:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692235744] [2023-12-15 17:50:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:50:49,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:50:49,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:50:49,111 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) [2023-12-15 17:50:49,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-15 17:50:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:50:49,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-15 17:50:49,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:50:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 30 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:49,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:50:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 28 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:50:50,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692235744] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:50:50,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:50:50,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2023-12-15 17:50:50,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550170133] [2023-12-15 17:50:50,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:50:50,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-15 17:50:50,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:50:50,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-15 17:50:50,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2023-12-15 17:50:50,954 INFO L87 Difference]: Start difference. First operand 9490 states and 12908 transitions. Second operand has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:01,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:51:01,674 INFO L93 Difference]: Finished difference Result 16718 states and 21938 transitions. [2023-12-15 17:51:01,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-12-15 17:51:01,675 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2023-12-15 17:51:01,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:51:01,689 INFO L225 Difference]: With dead ends: 16718 [2023-12-15 17:51:01,689 INFO L226 Difference]: Without dead ends: 14032 [2023-12-15 17:51:01,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10828 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4645, Invalid=27575, Unknown=0, NotChecked=0, Total=32220 [2023-12-15 17:51:01,697 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 26011 mSDsluCounter, 14486 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26011 SdHoareTripleChecker+Valid, 16027 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:51:01,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26011 Valid, 16027 Invalid, 1787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-15 17:51:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14032 states. [2023-12-15 17:51:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14032 to 11736. [2023-12-15 17:51:02,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11736 states, 11734 states have (on average 1.3339014828702915) internal successors, (15652), 11735 states have internal predecessors, (15652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11736 states to 11736 states and 15652 transitions. [2023-12-15 17:51:02,018 INFO L78 Accepts]: Start accepts. Automaton has 11736 states and 15652 transitions. Word has length 97 [2023-12-15 17:51:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:51:02,018 INFO L495 AbstractCegarLoop]: Abstraction has 11736 states and 15652 transitions. [2023-12-15 17:51:02,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 7.277777777777778) internal successors, (262), 35 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:51:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 11736 states and 15652 transitions. [2023-12-15 17:51:02,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-15 17:51:02,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:51:02,020 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:02,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-15 17:51:02,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:51:02,222 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:51:02,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:51:02,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1983536696, now seen corresponding path program 1 times [2023-12-15 17:51:02,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:51:02,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099544191] [2023-12-15 17:51:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:51:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 13 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:51:02,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:51:02,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099544191] [2023-12-15 17:51:02,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099544191] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:51:02,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514797324] [2023-12-15 17:51:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:51:02,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:51:02,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:51:02,720 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) [2023-12-15 17:51:02,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-15 17:51:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:51:02,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-15 17:51:02,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:51:04,875 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:51:04,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-12-15 17:51:07,555 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:51:07,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-15 17:51:07,566 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 [2023-12-15 17:51:07,566 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 17:51:07,756 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,SelfDestructingSolverStorable24 [2023-12-15 17:51:07,757 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 98 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-4-3-3-1 context. [2023-12-15 17:51:07,758 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:51:07,762 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:51:07,764 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:51:07,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:51:07 BoogieIcfgContainer [2023-12-15 17:51:07,765 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:51:07,765 INFO L158 Benchmark]: Toolchain (without parser) took 59306.20ms. Allocated memory was 201.3MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 143.9MB in the beginning and 1.0GB in the end (delta: -873.9MB). Peak memory consumption was 364.8MB. Max. memory is 8.0GB. [2023-12-15 17:51:07,766 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 201.3MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:51:07,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1142.61ms. Allocated memory was 201.3MB in the beginning and 272.6MB in the end (delta: 71.3MB). Free memory was 143.9MB in the beginning and 197.1MB in the end (delta: -53.2MB). Peak memory consumption was 110.2MB. Max. memory is 8.0GB. [2023-12-15 17:51:07,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 220.60ms. Allocated memory is still 272.6MB. Free memory was 197.1MB in the beginning and 126.9MB in the end (delta: 70.2MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. [2023-12-15 17:51:07,766 INFO L158 Benchmark]: Boogie Preprocessor took 407.48ms. Allocated memory is still 272.6MB. Free memory was 126.9MB in the beginning and 146.6MB in the end (delta: -19.7MB). Peak memory consumption was 87.3MB. Max. memory is 8.0GB. [2023-12-15 17:51:07,766 INFO L158 Benchmark]: RCFGBuilder took 3059.64ms. Allocated memory was 272.6MB in the beginning and 748.7MB in the end (delta: 476.1MB). Free memory was 146.6MB in the beginning and 589.6MB in the end (delta: -443.0MB). Peak memory consumption was 227.9MB. Max. memory is 8.0GB. [2023-12-15 17:51:07,767 INFO L158 Benchmark]: TraceAbstraction took 54470.28ms. Allocated memory was 748.7MB in the beginning and 1.4GB in the end (delta: 691.0MB). Free memory was 589.1MB in the beginning and 1.0GB in the end (delta: -428.7MB). Peak memory consumption was 261.8MB. Max. memory is 8.0GB. [2023-12-15 17:51:07,767 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 201.3MB. Free memory is still 148.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1142.61ms. Allocated memory was 201.3MB in the beginning and 272.6MB in the end (delta: 71.3MB). Free memory was 143.9MB in the beginning and 197.1MB in the end (delta: -53.2MB). Peak memory consumption was 110.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 220.60ms. Allocated memory is still 272.6MB. Free memory was 197.1MB in the beginning and 126.9MB in the end (delta: 70.2MB). Peak memory consumption was 69.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 407.48ms. Allocated memory is still 272.6MB. Free memory was 126.9MB in the beginning and 146.6MB in the end (delta: -19.7MB). Peak memory consumption was 87.3MB. Max. memory is 8.0GB. * RCFGBuilder took 3059.64ms. Allocated memory was 272.6MB in the beginning and 748.7MB in the end (delta: 476.1MB). Free memory was 146.6MB in the beginning and 589.6MB in the end (delta: -443.0MB). Peak memory consumption was 227.9MB. Max. memory is 8.0GB. * TraceAbstraction took 54470.28ms. Allocated memory was 748.7MB in the beginning and 1.4GB in the end (delta: 691.0MB). Free memory was 589.1MB in the beginning and 1.0GB in the end (delta: -428.7MB). Peak memory consumption was 261.8MB. 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: 295]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 295). Cancelled while NwaCegarLoop was analyzing trace of length 98 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-4-3-3-1 context. - TimeoutResultAtElement [Line: 331]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 331). Cancelled while NwaCegarLoop was analyzing trace of length 98 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 3 xjuncts wrt. a ∧-4-3-3-1 context. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 809 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 54.4s, OverallIterations: 25, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 30.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130669 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130669 mSDsluCounter, 126324 SdHoareTripleChecker+Invalid, 9.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93175 mSDsCounter, 2576 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13037 IncrementalHoareTripleChecker+Invalid, 15613 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2576 mSolverCounterUnsat, 33149 mSDtfsCounter, 13037 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1363 GetRequests, 809 SyntacticMatches, 0 SemanticMatches, 554 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16618 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11736occurred in iteration=24, InterpolantAutomatonStates: 411, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.4s AutomataMinimizationTime, 24 MinimizatonAttempts, 10074 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 1634 NumberOfCodeBlocks, 1634 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2043 ConstructedInterpolants, 0 QuantifiedInterpolants, 25348 SizeOfPredicates, 42 NumberOfNonLiveVariables, 2167 ConjunctsInSsa, 127 ConjunctsInUnsatCore, 38 InterpolantComputations, 17 PerfectInterpolantSequences, 290/531 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