/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.4.ufo.UNBOUNDED.pals+Problem12_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 17:52:48,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 17:52:48,942 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 17:52:48,947 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 17:52:48,948 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 17:52:48,969 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 17:52:48,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 17:52:48,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 17:52:48,970 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 17:52:48,973 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 17:52:48,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 17:52:48,974 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 17:52:48,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 17:52:48,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 17:52:48,975 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 17:52:48,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 17:52:48,975 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 17:52:48,976 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 17:52:48,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 17:52:48,976 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 17:52:48,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 17:52:48,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 17:52:48,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 17:52:48,977 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 17:52:48,977 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 17:52:48,977 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 17:52:48,977 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 17:52:48,977 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 17:52:48,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 17:52:48,978 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 17:52:48,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 17:52:48,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 17:52:48,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:52:48,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 17:52:48,979 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 17:52:48,979 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 17:52:48,980 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 17:52:48,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 17:52:48,980 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 17:52:48,980 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 17:52:48,980 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 17:52:48,980 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 17:52:48,980 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 17:52:48,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 17:52:49,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 17:52:49,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 17:52:49,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 17:52:49,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 17:52:49,211 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 17:52:49,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-12-15 17:52:50,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 17:52:50,515 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 17:52:50,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-12-15 17:52:50,543 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82d42e0f/66b7d8eb5b2c4c5098358a4a2b9431b4/FLAG6f3adf6be [2023-12-15 17:52:50,558 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82d42e0f/66b7d8eb5b2c4c5098358a4a2b9431b4 [2023-12-15 17:52:50,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 17:52:50,561 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 17:52:50,563 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 17:52:50,563 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 17:52:50,566 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 17:52:50,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:52:50" (1/1) ... [2023-12-15 17:52:50,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60311f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:50, skipping insertion in model container [2023-12-15 17:52:50,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 05:52:50" (1/1) ... [2023-12-15 17:52:50,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 17:52:50,878 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.4.ufo.UNBOUNDED.pals+Problem12_label08.c[8712,8725] [2023-12-15 17:52:50,903 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.4.ufo.UNBOUNDED.pals+Problem12_label08.c[12219,12232] [2023-12-15 17:52:51,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:52:51,447 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 17:52:51,477 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.4.ufo.UNBOUNDED.pals+Problem12_label08.c[8712,8725] [2023-12-15 17:52:51,481 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.4.ufo.UNBOUNDED.pals+Problem12_label08.c[12219,12232] [2023-12-15 17:52:51,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 17:52:51,774 INFO L206 MainTranslator]: Completed translation [2023-12-15 17:52:51,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51 WrapperNode [2023-12-15 17:52:51,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 17:52:51,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 17:52:51,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 17:52:51,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 17:52:51,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:51,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,047 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5035 [2023-12-15 17:52:52,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 17:52:52,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 17:52:52,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 17:52:52,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 17:52:52,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,088 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,228 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 17:52:52,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,341 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,372 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,421 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 17:52:52,422 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 17:52:52,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 17:52:52,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 17:52:52,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (1/1) ... [2023-12-15 17:52:52,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 17:52:52,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:52:52,457 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 17:52:52,489 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 17:52:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 17:52:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 17:52:52,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 17:52:52,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 17:52:52,567 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 17:52:52,568 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 17:52:55,577 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 17:52:55,631 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 17:52:55,632 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-15 17:52:55,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:52:55 BoogieIcfgContainer [2023-12-15 17:52:55,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 17:52:55,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 17:52:55,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 17:52:55,636 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 17:52:55,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 05:52:50" (1/3) ... [2023-12-15 17:52:55,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdb0292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:52:55, skipping insertion in model container [2023-12-15 17:52:55,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 05:52:51" (2/3) ... [2023-12-15 17:52:55,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bdb0292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 05:52:55, skipping insertion in model container [2023-12-15 17:52:55,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 05:52:55" (3/3) ... [2023-12-15 17:52:55,639 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label08.c [2023-12-15 17:52:55,651 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 17:52:55,651 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-15 17:52:55,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 17:52:55,712 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;@542c39ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 17:52:55,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-15 17:52:55,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states 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 17:52:55,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-15 17:52:55,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:55,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:55,725 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:55,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:55,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1324896968, now seen corresponding path program 1 times [2023-12-15 17:52:55,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:55,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538431677] [2023-12-15 17:52:55,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:55,862 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 17:52:55,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:55,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538431677] [2023-12-15 17:52:55,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538431677] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:52:55,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:52:55,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:52:55,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632198999] [2023-12-15 17:52:55,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:52:55,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-15 17:52:55,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:55,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-15 17:52:55,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:52:55,904 INFO L87 Difference]: Start difference. First operand has 822 states, 819 states have (on average 1.9768009768009769) internal successors, (1619), 821 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:55,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:55,967 INFO L93 Difference]: Finished difference Result 1616 states and 3185 transitions. [2023-12-15 17:52:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-15 17:52:55,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-15 17:52:55,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:55,980 INFO L225 Difference]: With dead ends: 1616 [2023-12-15 17:52:55,980 INFO L226 Difference]: Without dead ends: 818 [2023-12-15 17:52:55,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-15 17:52:55,987 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:55,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1547 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:52:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-15 17:52:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-15 17:52:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8970588235294117) internal successors, (1548), 817 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states 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 17:52:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1548 transitions. [2023-12-15 17:52:56,033 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1548 transitions. Word has length 19 [2023-12-15 17:52:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:56,033 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1548 transitions. [2023-12-15 17:52:56,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1548 transitions. [2023-12-15 17:52:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-15 17:52:56,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:56,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:56,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 17:52:56,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:56,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:56,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1690206650, now seen corresponding path program 1 times [2023-12-15 17:52:56,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:56,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927312102] [2023-12-15 17:52:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:56,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:56,200 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 17:52:56,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:56,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927312102] [2023-12-15 17:52:56,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927312102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:52:56,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:52:56,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:52:56,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699689772] [2023-12-15 17:52:56,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:52:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:52:56,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:56,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:52:56,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:52:56,202 INFO L87 Difference]: Start difference. First operand 818 states and 1548 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:56,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:56,255 INFO L93 Difference]: Finished difference Result 858 states and 1610 transitions. [2023-12-15 17:52:56,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:52:56,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-12-15 17:52:56,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:56,258 INFO L225 Difference]: With dead ends: 858 [2023-12-15 17:52:56,258 INFO L226 Difference]: Without dead ends: 818 [2023-12-15 17:52:56,259 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 17:52:56,260 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 0 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:56,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4608 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:52:56,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2023-12-15 17:52:56,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2023-12-15 17:52:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 816 states have (on average 1.8688725490196079) internal successors, (1525), 817 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states 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 17:52:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1525 transitions. [2023-12-15 17:52:56,272 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1525 transitions. Word has length 19 [2023-12-15 17:52:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:56,273 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1525 transitions. [2023-12-15 17:52:56,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:56,273 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1525 transitions. [2023-12-15 17:52:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 17:52:56,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:56,274 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] [2023-12-15 17:52:56,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 17:52:56,274 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:56,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1083043719, now seen corresponding path program 1 times [2023-12-15 17:52:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:56,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014010913] [2023-12-15 17:52:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:56,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:56,350 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 17:52:56,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:56,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014010913] [2023-12-15 17:52:56,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014010913] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:52:56,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:52:56,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-15 17:52:56,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846711453] [2023-12-15 17:52:56,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:52:56,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:52:56,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:56,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:52:56,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:52:56,352 INFO L87 Difference]: Start difference. First operand 818 states and 1525 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:58,884 INFO L93 Difference]: Finished difference Result 2322 states and 4398 transitions. [2023-12-15 17:52:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:52:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-12-15 17:52:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:58,890 INFO L225 Difference]: With dead ends: 2322 [2023-12-15 17:52:58,890 INFO L226 Difference]: Without dead ends: 1569 [2023-12-15 17:52:58,892 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 17:52:58,893 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 926 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:58,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 198 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-15 17:52:58,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2023-12-15 17:52:58,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1569. [2023-12-15 17:52:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1567 states have (on average 1.8276962348436503) internal successors, (2864), 1568 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states 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 17:52:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2864 transitions. [2023-12-15 17:52:58,916 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2864 transitions. Word has length 29 [2023-12-15 17:52:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:58,916 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2864 transitions. [2023-12-15 17:52:58,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:58,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2864 transitions. [2023-12-15 17:52:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-15 17:52:58,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:58,917 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, 1, 1, 1] [2023-12-15 17:52:58,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 17:52:58,918 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:58,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1827910901, now seen corresponding path program 1 times [2023-12-15 17:52:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591045017] [2023-12-15 17:52:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:59,104 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 17:52:59,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:59,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591045017] [2023-12-15 17:52:59,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591045017] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:52:59,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:52:59,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:52:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809126915] [2023-12-15 17:52:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:52:59,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:52:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:52:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:52:59,106 INFO L87 Difference]: Start difference. First operand 1569 states and 2864 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:59,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:59,304 INFO L93 Difference]: Finished difference Result 1865 states and 3336 transitions. [2023-12-15 17:52:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-15 17:52:59,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-12-15 17:52:59,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:59,309 INFO L225 Difference]: With dead ends: 1865 [2023-12-15 17:52:59,310 INFO L226 Difference]: Without dead ends: 1828 [2023-12-15 17:52:59,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-15 17:52:59,315 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 6269 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6269 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:59,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6269 Valid, 2107 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 17:52:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2023-12-15 17:52:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1604. [2023-12-15 17:52:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1602 states have (on average 1.822721598002497) internal successors, (2920), 1603 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states 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 17:52:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2920 transitions. [2023-12-15 17:52:59,340 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2920 transitions. Word has length 41 [2023-12-15 17:52:59,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:59,340 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2920 transitions. [2023-12-15 17:52:59,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2920 transitions. [2023-12-15 17:52:59,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-15 17:52:59,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:59,345 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, 1, 1, 1, 1, 1] [2023-12-15 17:52:59,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 17:52:59,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:59,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:59,346 INFO L85 PathProgramCache]: Analyzing trace with hash -143781275, now seen corresponding path program 1 times [2023-12-15 17:52:59,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:59,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610904285] [2023-12-15 17:52:59,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:59,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:59,415 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 17:52:59,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:59,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610904285] [2023-12-15 17:52:59,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610904285] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:52:59,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:52:59,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:52:59,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546050804] [2023-12-15 17:52:59,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:52:59,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:52:59,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:59,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:52:59,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:52:59,416 INFO L87 Difference]: Start difference. First operand 1604 states and 2920 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:59,470 INFO L93 Difference]: Finished difference Result 1737 states and 3131 transitions. [2023-12-15 17:52:59,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:52:59,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-15 17:52:59,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:59,475 INFO L225 Difference]: With dead ends: 1737 [2023-12-15 17:52:59,475 INFO L226 Difference]: Without dead ends: 1665 [2023-12-15 17:52:59,478 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 17:52:59,479 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1474 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1569 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 17:52:59,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1569 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:52:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2023-12-15 17:52:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1661. [2023-12-15 17:52:59,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.8131404460518386) internal successors, (3008), 1660 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states 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 17:52:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 3008 transitions. [2023-12-15 17:52:59,504 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 3008 transitions. Word has length 43 [2023-12-15 17:52:59,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:59,505 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 3008 transitions. [2023-12-15 17:52:59,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:59,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 3008 transitions. [2023-12-15 17:52:59,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-12-15 17:52:59,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:59,508 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, 1, 1, 1, 1, 1] [2023-12-15 17:52:59,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 17:52:59,508 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:59,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash -141636323, now seen corresponding path program 1 times [2023-12-15 17:52:59,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:59,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858512816] [2023-12-15 17:52:59,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:59,668 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 17:52:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858512816] [2023-12-15 17:52:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858512816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:52:59,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:52:59,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:52:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070550644] [2023-12-15 17:52:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:52:59,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:52:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:52:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:52:59,670 INFO L87 Difference]: Start difference. First operand 1661 states and 3008 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:59,757 INFO L93 Difference]: Finished difference Result 1792 states and 3212 transitions. [2023-12-15 17:52:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:52:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-12-15 17:52:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:59,762 INFO L225 Difference]: With dead ends: 1792 [2023-12-15 17:52:59,762 INFO L226 Difference]: Without dead ends: 1663 [2023-12-15 17:52:59,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-15 17:52:59,763 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 1491 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:52:59,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1734 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:52:59,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2023-12-15 17:52:59,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2023-12-15 17:52:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.8119349005424954) internal successors, (3006), 1660 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states 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 17:52:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 3006 transitions. [2023-12-15 17:52:59,805 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 3006 transitions. Word has length 43 [2023-12-15 17:52:59,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:59,805 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 3006 transitions. [2023-12-15 17:52:59,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:59,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 3006 transitions. [2023-12-15 17:52:59,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-15 17:52:59,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:59,806 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, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:59,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 17:52:59,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:59,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash -224171133, now seen corresponding path program 1 times [2023-12-15 17:52:59,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:59,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544581715] [2023-12-15 17:52:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:59,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:52:59,930 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 17:52:59,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:52:59,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544581715] [2023-12-15 17:52:59,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544581715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:52:59,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:52:59,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 17:52:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233604327] [2023-12-15 17:52:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:52:59,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:52:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:52:59,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:52:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:52:59,932 INFO L87 Difference]: Start difference. First operand 1661 states and 3006 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:59,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:52:59,961 INFO L93 Difference]: Finished difference Result 1669 states and 3015 transitions. [2023-12-15 17:52:59,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:52:59,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-12-15 17:52:59,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:52:59,967 INFO L225 Difference]: With dead ends: 1669 [2023-12-15 17:52:59,967 INFO L226 Difference]: Without dead ends: 1667 [2023-12-15 17:52:59,967 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 17:52:59,967 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4555 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 17:52:59,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4555 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:52:59,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2023-12-15 17:52:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1665. [2023-12-15 17:52:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1663 states have (on average 1.809380637402285) internal successors, (3009), 1664 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states 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 17:52:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 3009 transitions. [2023-12-15 17:52:59,990 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 3009 transitions. Word has length 44 [2023-12-15 17:52:59,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:52:59,990 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 3009 transitions. [2023-12-15 17:52:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:52:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 3009 transitions. [2023-12-15 17:52:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 17:52:59,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:52:59,991 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:52:59,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 17:52:59,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:52:59,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:52:59,991 INFO L85 PathProgramCache]: Analyzing trace with hash 339171325, now seen corresponding path program 1 times [2023-12-15 17:52:59,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:52:59,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210088009] [2023-12-15 17:52:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:52:59,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:52:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:00,020 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 17:53:00,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:00,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210088009] [2023-12-15 17:53:00,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210088009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:00,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:00,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:53:00,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464285374] [2023-12-15 17:53:00,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:00,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:53:00,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:00,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:53:00,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:53:00,021 INFO L87 Difference]: Start difference. First operand 1665 states and 3009 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 17:53:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:00,054 INFO L93 Difference]: Finished difference Result 1915 states and 3389 transitions. [2023-12-15 17:53:00,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:53:00,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2023-12-15 17:53:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:00,061 INFO L225 Difference]: With dead ends: 1915 [2023-12-15 17:53:00,061 INFO L226 Difference]: Without dead ends: 1782 [2023-12-15 17:53:00,062 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 17:53:00,062 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1485 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1620 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 17:53:00,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1620 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2023-12-15 17:53:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1780. [2023-12-15 17:53:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1778 states have (on average 1.7885264341957254) internal successors, (3180), 1779 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states 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 17:53:00,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 3180 transitions. [2023-12-15 17:53:00,093 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 3180 transitions. Word has length 45 [2023-12-15 17:53:00,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:00,093 INFO L495 AbstractCegarLoop]: Abstraction has 1780 states and 3180 transitions. [2023-12-15 17:53:00,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 17:53:00,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 3180 transitions. [2023-12-15 17:53:00,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 17:53:00,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:00,094 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:00,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 17:53:00,094 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:00,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:00,095 INFO L85 PathProgramCache]: Analyzing trace with hash -286484739, now seen corresponding path program 1 times [2023-12-15 17:53:00,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:00,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653741673] [2023-12-15 17:53:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:00,125 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 17:53:00,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:00,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653741673] [2023-12-15 17:53:00,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653741673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:00,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:00,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:53:00,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233436728] [2023-12-15 17:53:00,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:00,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:53:00,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:00,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:53:00,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:53:00,127 INFO L87 Difference]: Start difference. First operand 1780 states and 3180 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 17:53:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:00,154 INFO L93 Difference]: Finished difference Result 2244 states and 3874 transitions. [2023-12-15 17:53:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:53:00,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2023-12-15 17:53:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:00,162 INFO L225 Difference]: With dead ends: 2244 [2023-12-15 17:53:00,164 INFO L226 Difference]: Without dead ends: 1996 [2023-12-15 17:53:00,166 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 17:53:00,168 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 1483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1622 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 17:53:00,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1622 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2023-12-15 17:53:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1994. [2023-12-15 17:53:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1992 states have (on average 1.752008032128514) internal successors, (3490), 1993 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states 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 17:53:00,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 3490 transitions. [2023-12-15 17:53:00,199 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 3490 transitions. Word has length 45 [2023-12-15 17:53:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:00,200 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 3490 transitions. [2023-12-15 17:53:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 17:53:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 3490 transitions. [2023-12-15 17:53:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-15 17:53:00,201 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:00,201 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:00,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 17:53:00,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:00,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash 602248701, now seen corresponding path program 1 times [2023-12-15 17:53:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037134994] [2023-12-15 17:53:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:00,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:00,234 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 17:53:00,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:00,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037134994] [2023-12-15 17:53:00,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037134994] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:00,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:00,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:53:00,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651492885] [2023-12-15 17:53:00,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:00,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:53:00,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:00,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:53:00,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:53:00,236 INFO L87 Difference]: Start difference. First operand 1994 states and 3490 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 17:53:00,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:00,279 INFO L93 Difference]: Finished difference Result 2854 states and 4748 transitions. [2023-12-15 17:53:00,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:53:00,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 45 [2023-12-15 17:53:00,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:00,286 INFO L225 Difference]: With dead ends: 2854 [2023-12-15 17:53:00,286 INFO L226 Difference]: Without dead ends: 2392 [2023-12-15 17:53:00,287 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 17:53:00,288 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 1481 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1624 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 17:53:00,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1624 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:00,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2392 states. [2023-12-15 17:53:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2392 to 2390. [2023-12-15 17:53:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2388 states have (on average 1.6943048576214406) internal successors, (4046), 2389 states have internal predecessors, (4046), 0 states have call successors, (0), 0 states 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 17:53:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 4046 transitions. [2023-12-15 17:53:00,384 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 4046 transitions. Word has length 45 [2023-12-15 17:53:00,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:00,384 INFO L495 AbstractCegarLoop]: Abstraction has 2390 states and 4046 transitions. [2023-12-15 17:53:00,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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 17:53:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 4046 transitions. [2023-12-15 17:53:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-15 17:53:00,385 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:00,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:00,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 17:53:00,385 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:00,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:00,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1358107618, now seen corresponding path program 1 times [2023-12-15 17:53:00,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:00,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910962421] [2023-12-15 17:53:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:00,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:00,408 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 17:53:00,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:00,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910962421] [2023-12-15 17:53:00,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910962421] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:00,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:00,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:53:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144259689] [2023-12-15 17:53:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:00,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:53:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:00,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:53:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:53:00,409 INFO L87 Difference]: Start difference. First operand 2390 states and 4046 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 17:53:00,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:00,448 INFO L93 Difference]: Finished difference Result 3293 states and 5380 transitions. [2023-12-15 17:53:00,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:53:00,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 47 [2023-12-15 17:53:00,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:00,455 INFO L225 Difference]: With dead ends: 3293 [2023-12-15 17:53:00,455 INFO L226 Difference]: Without dead ends: 2794 [2023-12-15 17:53:00,456 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 17:53:00,457 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 1484 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1621 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 17:53:00,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1621 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:00,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2023-12-15 17:53:00,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2792. [2023-12-15 17:53:00,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2792 states, 2790 states have (on average 1.6544802867383512) internal successors, (4616), 2791 states have internal predecessors, (4616), 0 states have call successors, (0), 0 states 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 17:53:00,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 4616 transitions. [2023-12-15 17:53:00,508 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 4616 transitions. Word has length 47 [2023-12-15 17:53:00,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:00,508 INFO L495 AbstractCegarLoop]: Abstraction has 2792 states and 4616 transitions. [2023-12-15 17:53:00,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 17:53:00,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 4616 transitions. [2023-12-15 17:53:00,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 17:53:00,509 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:00,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:00,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 17:53:00,509 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:00,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:00,509 INFO L85 PathProgramCache]: Analyzing trace with hash 445025325, now seen corresponding path program 1 times [2023-12-15 17:53:00,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:00,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964601984] [2023-12-15 17:53:00,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:00,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-15 17:53:00,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:00,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964601984] [2023-12-15 17:53:00,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964601984] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:00,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:00,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:53:00,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221127968] [2023-12-15 17:53:00,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:00,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:53:00,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:53:00,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:53:00,599 INFO L87 Difference]: Start difference. First operand 2792 states and 4616 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 17:53:00,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:00,743 INFO L93 Difference]: Finished difference Result 8098 states and 12229 transitions. [2023-12-15 17:53:00,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:53:00,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 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 61 [2023-12-15 17:53:00,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:00,762 INFO L225 Difference]: With dead ends: 8098 [2023-12-15 17:53:00,762 INFO L226 Difference]: Without dead ends: 6840 [2023-12-15 17:53:00,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:53:00,767 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4653 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:00,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 3347 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2023-12-15 17:53:00,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 4048. [2023-12-15 17:53:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 4046 states have (on average 1.5818091942659416) internal successors, (6400), 4047 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states 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 17:53:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 6400 transitions. [2023-12-15 17:53:00,886 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 6400 transitions. Word has length 61 [2023-12-15 17:53:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:00,886 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 6400 transitions. [2023-12-15 17:53:00,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states 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 17:53:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 6400 transitions. [2023-12-15 17:53:00,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 17:53:00,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:00,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:00,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 17:53:00,887 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:00,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -180630739, now seen corresponding path program 1 times [2023-12-15 17:53:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:00,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704506206] [2023-12-15 17:53:00,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:00,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:00,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-15 17:53:00,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:00,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704506206] [2023-12-15 17:53:00,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704506206] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:00,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:00,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:53:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277522723] [2023-12-15 17:53:00,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:53:00,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:00,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:53:00,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:53:00,953 INFO L87 Difference]: Start difference. First operand 4048 states and 6400 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:01,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:01,100 INFO L93 Difference]: Finished difference Result 9354 states and 14013 transitions. [2023-12-15 17:53:01,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:53:01,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2023-12-15 17:53:01,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:01,111 INFO L225 Difference]: With dead ends: 9354 [2023-12-15 17:53:01,111 INFO L226 Difference]: Without dead ends: 8096 [2023-12-15 17:53:01,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:53:01,115 INFO L413 NwaCegarLoop]: 1571 mSDtfsCounter, 4681 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:01,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 3284 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:01,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8096 states. [2023-12-15 17:53:01,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8096 to 5936. [2023-12-15 17:53:01,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5936 states, 5934 states have (on average 1.5261206605999327) internal successors, (9056), 5935 states have internal predecessors, (9056), 0 states have call successors, (0), 0 states 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 17:53:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5936 states to 5936 states and 9056 transitions. [2023-12-15 17:53:01,283 INFO L78 Accepts]: Start accepts. Automaton has 5936 states and 9056 transitions. Word has length 61 [2023-12-15 17:53:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:01,283 INFO L495 AbstractCegarLoop]: Abstraction has 5936 states and 9056 transitions. [2023-12-15 17:53:01,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5936 states and 9056 transitions. [2023-12-15 17:53:01,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-15 17:53:01,285 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:01,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:01,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 17:53:01,285 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:01,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash 708102701, now seen corresponding path program 1 times [2023-12-15 17:53:01,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:01,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856709417] [2023-12-15 17:53:01,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:01,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:01,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-15 17:53:01,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:01,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856709417] [2023-12-15 17:53:01,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856709417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:01,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:01,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:53:01,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830016993] [2023-12-15 17:53:01,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:01,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:53:01,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:53:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:53:01,359 INFO L87 Difference]: Start difference. First operand 5936 states and 9056 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 17:53:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:01,560 INFO L93 Difference]: Finished difference Result 10610 states and 15797 transitions. [2023-12-15 17:53:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:53:01,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 61 [2023-12-15 17:53:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:01,578 INFO L225 Difference]: With dead ends: 10610 [2023-12-15 17:53:01,578 INFO L226 Difference]: Without dead ends: 9352 [2023-12-15 17:53:01,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:53:01,584 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4663 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:01,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4663 Valid, 3316 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2023-12-15 17:53:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 7192. [2023-12-15 17:53:01,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7192 states, 7190 states have (on average 1.5076495132127956) internal successors, (10840), 7191 states have internal predecessors, (10840), 0 states have call successors, (0), 0 states 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 17:53:01,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7192 states to 7192 states and 10840 transitions. [2023-12-15 17:53:01,779 INFO L78 Accepts]: Start accepts. Automaton has 7192 states and 10840 transitions. Word has length 61 [2023-12-15 17:53:01,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:01,779 INFO L495 AbstractCegarLoop]: Abstraction has 7192 states and 10840 transitions. [2023-12-15 17:53:01,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 17:53:01,780 INFO L276 IsEmpty]: Start isEmpty. Operand 7192 states and 10840 transitions. [2023-12-15 17:53:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 17:53:01,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:01,781 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:01,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 17:53:01,781 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:01,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:01,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1949780395, now seen corresponding path program 1 times [2023-12-15 17:53:01,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:01,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826571803] [2023-12-15 17:53:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:01,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:01,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:01,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:01,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826571803] [2023-12-15 17:53:01,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826571803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:01,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:01,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:53:01,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021646779] [2023-12-15 17:53:01,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:01,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:53:01,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:01,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:53:01,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:53:01,836 INFO L87 Difference]: Start difference. First operand 7192 states and 10840 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:01,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:01,918 INFO L93 Difference]: Finished difference Result 11245 states and 16692 transitions. [2023-12-15 17:53:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:53:01,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 17:53:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:01,925 INFO L225 Difference]: With dead ends: 11245 [2023-12-15 17:53:01,925 INFO L226 Difference]: Without dead ends: 5587 [2023-12-15 17:53:01,930 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 17:53:01,931 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 42 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3062 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 17:53:01,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3062 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2023-12-15 17:53:02,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 5585. [2023-12-15 17:53:02,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5585 states, 5583 states have (on average 1.537703743507075) internal successors, (8585), 5584 states have internal predecessors, (8585), 0 states have call successors, (0), 0 states 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 17:53:02,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5585 states to 5585 states and 8585 transitions. [2023-12-15 17:53:02,023 INFO L78 Accepts]: Start accepts. Automaton has 5585 states and 8585 transitions. Word has length 63 [2023-12-15 17:53:02,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:02,023 INFO L495 AbstractCegarLoop]: Abstraction has 5585 states and 8585 transitions. [2023-12-15 17:53:02,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:02,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5585 states and 8585 transitions. [2023-12-15 17:53:02,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-15 17:53:02,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:02,024 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:02,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 17:53:02,024 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:02,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash 4586514, now seen corresponding path program 1 times [2023-12-15 17:53:02,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:02,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361325279] [2023-12-15 17:53:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:02,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:02,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:53:02,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:02,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361325279] [2023-12-15 17:53:02,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361325279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:02,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:02,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-15 17:53:02,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781702427] [2023-12-15 17:53:02,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:02,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-15 17:53:02,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:02,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-15 17:53:02,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-15 17:53:02,092 INFO L87 Difference]: Start difference. First operand 5585 states and 8585 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:53:02,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:02,276 INFO L93 Difference]: Finished difference Result 9179 states and 13774 transitions. [2023-12-15 17:53:02,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-15 17:53:02,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2023-12-15 17:53:02,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:02,286 INFO L225 Difference]: With dead ends: 9179 [2023-12-15 17:53:02,286 INFO L226 Difference]: Without dead ends: 8281 [2023-12-15 17:53:02,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-15 17:53:02,288 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 4657 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4657 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:02,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4657 Valid, 3368 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2023-12-15 17:53:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 6481. [2023-12-15 17:53:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6481 states, 6479 states have (on average 1.5226115141225498) internal successors, (9865), 6480 states have internal predecessors, (9865), 0 states have call successors, (0), 0 states 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 17:53:02,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6481 states to 6481 states and 9865 transitions. [2023-12-15 17:53:02,408 INFO L78 Accepts]: Start accepts. Automaton has 6481 states and 9865 transitions. Word has length 63 [2023-12-15 17:53:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:02,408 INFO L495 AbstractCegarLoop]: Abstraction has 6481 states and 9865 transitions. [2023-12-15 17:53:02,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 17:53:02,408 INFO L276 IsEmpty]: Start isEmpty. Operand 6481 states and 9865 transitions. [2023-12-15 17:53:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-15 17:53:02,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:02,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:02,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 17:53:02,409 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:02,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1055056157, now seen corresponding path program 1 times [2023-12-15 17:53:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:02,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830491822] [2023-12-15 17:53:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:02,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:02,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830491822] [2023-12-15 17:53:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830491822] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:02,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:02,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:53:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040412142] [2023-12-15 17:53:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:02,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:53:02,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:02,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:53:02,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:53:02,459 INFO L87 Difference]: Start difference. First operand 6481 states and 9865 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:02,512 INFO L93 Difference]: Finished difference Result 8949 states and 13387 transitions. [2023-12-15 17:53:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:53:02,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2023-12-15 17:53:02,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:02,517 INFO L225 Difference]: With dead ends: 8949 [2023-12-15 17:53:02,518 INFO L226 Difference]: Without dead ends: 4019 [2023-12-15 17:53:02,522 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 17:53:02,522 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 37 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3047 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 17:53:02,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3047 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:02,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2023-12-15 17:53:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 4017. [2023-12-15 17:53:02,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 4015 states have (on average 1.5693648816936487) internal successors, (6301), 4016 states have internal predecessors, (6301), 0 states have call successors, (0), 0 states 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 17:53:02,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 6301 transitions. [2023-12-15 17:53:02,584 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 6301 transitions. Word has length 64 [2023-12-15 17:53:02,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:02,584 INFO L495 AbstractCegarLoop]: Abstraction has 4017 states and 6301 transitions. [2023-12-15 17:53:02,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:02,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 6301 transitions. [2023-12-15 17:53:02,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-15 17:53:02,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:02,585 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:02,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 17:53:02,585 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:02,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:02,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1300219787, now seen corresponding path program 1 times [2023-12-15 17:53:02,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:02,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503421529] [2023-12-15 17:53:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:02,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:02,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:02,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503421529] [2023-12-15 17:53:02,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503421529] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:02,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:02,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:53:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125060850] [2023-12-15 17:53:02,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:02,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:53:02,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:02,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:53:02,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:53:02,633 INFO L87 Difference]: Start difference. First operand 4017 states and 6301 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 17:53:02,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:02,667 INFO L93 Difference]: Finished difference Result 5253 states and 8041 transitions. [2023-12-15 17:53:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:53:02,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-12-15 17:53:02,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:02,671 INFO L225 Difference]: With dead ends: 5253 [2023-12-15 17:53:02,671 INFO L226 Difference]: Without dead ends: 2787 [2023-12-15 17:53:02,674 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 17:53:02,674 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 34 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3032 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 17:53:02,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3032 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2023-12-15 17:53:02,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2785. [2023-12-15 17:53:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2785 states, 2783 states have (on average 1.6316924182536832) internal successors, (4541), 2784 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states 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 17:53:02,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4541 transitions. [2023-12-15 17:53:02,713 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4541 transitions. Word has length 66 [2023-12-15 17:53:02,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:02,713 INFO L495 AbstractCegarLoop]: Abstraction has 2785 states and 4541 transitions. [2023-12-15 17:53:02,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 17:53:02,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4541 transitions. [2023-12-15 17:53:02,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-15 17:53:02,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:02,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:02,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 17:53:02,714 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:02,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 925871993, now seen corresponding path program 1 times [2023-12-15 17:53:02,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:02,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595615799] [2023-12-15 17:53:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:02,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:02,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:02,766 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:02,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:02,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595615799] [2023-12-15 17:53:02,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595615799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:02,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:02,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:53:02,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345746108] [2023-12-15 17:53:02,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:02,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 17:53:02,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:02,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 17:53:02,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 17:53:02,768 INFO L87 Difference]: Start difference. First operand 2785 states and 4541 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:02,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:02,793 INFO L93 Difference]: Finished difference Result 3405 states and 5401 transitions. [2023-12-15 17:53:02,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 17:53:02,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-12-15 17:53:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:02,797 INFO L225 Difference]: With dead ends: 3405 [2023-12-15 17:53:02,797 INFO L226 Difference]: Without dead ends: 2171 [2023-12-15 17:53:02,798 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 17:53:02,798 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 31 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3017 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 17:53:02,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3017 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 17:53:02,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2023-12-15 17:53:02,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 2169. [2023-12-15 17:53:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2167 states have (on average 1.694508537148131) internal successors, (3672), 2168 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states 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 17:53:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 3672 transitions. [2023-12-15 17:53:02,825 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 3672 transitions. Word has length 68 [2023-12-15 17:53:02,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:02,825 INFO L495 AbstractCegarLoop]: Abstraction has 2169 states and 3672 transitions. [2023-12-15 17:53:02,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:02,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 3672 transitions. [2023-12-15 17:53:02,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-15 17:53:02,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:02,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:02,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 17:53:02,826 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:02,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:02,826 INFO L85 PathProgramCache]: Analyzing trace with hash -324175641, now seen corresponding path program 1 times [2023-12-15 17:53:02,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:02,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113034374] [2023-12-15 17:53:02,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:02,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:03,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:03,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113034374] [2023-12-15 17:53:03,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113034374] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:53:03,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665073049] [2023-12-15 17:53:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:03,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:03,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:53:03,886 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 17:53:03,919 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 17:53:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:03,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-15 17:53:03,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:53:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:53:04,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:53:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-15 17:53:04,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665073049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:53:04,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:53:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-12-15 17:53:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509432877] [2023-12-15 17:53:04,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:53:04,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-15 17:53:04,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-15 17:53:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-12-15 17:53:04,204 INFO L87 Difference]: Start difference. First operand 2169 states and 3672 transitions. Second operand has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:06,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:06,097 INFO L93 Difference]: Finished difference Result 6492 states and 9419 transitions. [2023-12-15 17:53:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-15 17:53:06,097 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-12-15 17:53:06,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:06,105 INFO L225 Difference]: With dead ends: 6492 [2023-12-15 17:53:06,105 INFO L226 Difference]: Without dead ends: 5874 [2023-12-15 17:53:06,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1055 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=689, Invalid=2971, Unknown=0, NotChecked=0, Total=3660 [2023-12-15 17:53:06,107 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 15831 mSDsluCounter, 6270 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15831 SdHoareTripleChecker+Valid, 7776 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:06,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15831 Valid, 7776 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-15 17:53:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5874 states. [2023-12-15 17:53:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5874 to 5630. [2023-12-15 17:53:06,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 5628 states have (on average 1.4305259417199716) internal successors, (8051), 5629 states have internal predecessors, (8051), 0 states have call successors, (0), 0 states 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 17:53:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 8051 transitions. [2023-12-15 17:53:06,215 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 8051 transitions. Word has length 70 [2023-12-15 17:53:06,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:06,215 INFO L495 AbstractCegarLoop]: Abstraction has 5630 states and 8051 transitions. [2023-12-15 17:53:06,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.88888888888889) internal successors, (196), 18 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 8051 transitions. [2023-12-15 17:53:06,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 17:53:06,216 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:06,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:06,227 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 17:53:06,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:06,422 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:06,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2128128912, now seen corresponding path program 1 times [2023-12-15 17:53:06,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:06,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252223953] [2023-12-15 17:53:06,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:06,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:07,898 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:07,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:07,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252223953] [2023-12-15 17:53:07,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252223953] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:53:07,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482085070] [2023-12-15 17:53:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:07,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:07,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:53:07,902 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 17:53:07,903 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 17:53:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:08,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-15 17:53:08,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:53:08,287 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:08,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:53:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:09,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482085070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:53:09,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:53:09,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2023-12-15 17:53:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137718567] [2023-12-15 17:53:09,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:53:09,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-15 17:53:09,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-15 17:53:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2023-12-15 17:53:09,012 INFO L87 Difference]: Start difference. First operand 5630 states and 8051 transitions. Second operand has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:10,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:10,539 INFO L93 Difference]: Finished difference Result 23284 states and 30570 transitions. [2023-12-15 17:53:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-15 17:53:10,540 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-15 17:53:10,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:10,564 INFO L225 Difference]: With dead ends: 23284 [2023-12-15 17:53:10,564 INFO L226 Difference]: Without dead ends: 19698 [2023-12-15 17:53:10,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=565, Invalid=2515, Unknown=0, NotChecked=0, Total=3080 [2023-12-15 17:53:10,570 INFO L413 NwaCegarLoop]: 1497 mSDtfsCounter, 20453 mSDsluCounter, 8006 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20453 SdHoareTripleChecker+Valid, 9503 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:10,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20453 Valid, 9503 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:53:10,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19698 states. [2023-12-15 17:53:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19698 to 17580. [2023-12-15 17:53:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17580 states, 17578 states have (on average 1.3247809762202754) internal successors, (23287), 17579 states have internal predecessors, (23287), 0 states have call successors, (0), 0 states 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 17:53:10,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17580 states to 17580 states and 23287 transitions. [2023-12-15 17:53:10,983 INFO L78 Accepts]: Start accepts. Automaton has 17580 states and 23287 transitions. Word has length 71 [2023-12-15 17:53:10,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:10,983 INFO L495 AbstractCegarLoop]: Abstraction has 17580 states and 23287 transitions. [2023-12-15 17:53:10,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.5) internal successors, (182), 27 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:10,984 INFO L276 IsEmpty]: Start isEmpty. Operand 17580 states and 23287 transitions. [2023-12-15 17:53:10,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-15 17:53:10,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:10,985 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:11,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-15 17:53:11,189 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,SelfDestructingSolverStorable20 [2023-12-15 17:53:11,189 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:11,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000624, now seen corresponding path program 1 times [2023-12-15 17:53:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496639497] [2023-12-15 17:53:11,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:11,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:11,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496639497] [2023-12-15 17:53:11,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496639497] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:53:11,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097559867] [2023-12-15 17:53:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:11,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:11,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:53:11,399 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 17:53:11,400 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 17:53:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:11,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-15 17:53:11,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:53:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:12,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:53:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:13,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097559867] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:53:13,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:53:13,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 28 [2023-12-15 17:53:13,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759163146] [2023-12-15 17:53:13,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:53:13,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-15 17:53:13,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:13,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-15 17:53:13,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=664, Unknown=0, NotChecked=0, Total=756 [2023-12-15 17:53:13,199 INFO L87 Difference]: Start difference. First operand 17580 states and 23287 transitions. Second operand has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 17:53:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:15,192 INFO L93 Difference]: Finished difference Result 35020 states and 45536 transitions. [2023-12-15 17:53:15,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-15 17:53:15,194 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2023-12-15 17:53:15,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:15,222 INFO L225 Difference]: With dead ends: 35020 [2023-12-15 17:53:15,222 INFO L226 Difference]: Without dead ends: 19773 [2023-12-15 17:53:15,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=763, Invalid=3269, Unknown=0, NotChecked=0, Total=4032 [2023-12-15 17:53:15,239 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 11521 mSDsluCounter, 13678 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11521 SdHoareTripleChecker+Valid, 15172 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:15,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11521 Valid, 15172 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:53:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19773 states. [2023-12-15 17:53:15,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19773 to 12174. [2023-12-15 17:53:15,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12174 states, 12172 states have (on average 1.333963194216234) internal successors, (16237), 12173 states have internal predecessors, (16237), 0 states have call successors, (0), 0 states 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 17:53:15,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12174 states to 12174 states and 16237 transitions. [2023-12-15 17:53:15,560 INFO L78 Accepts]: Start accepts. Automaton has 12174 states and 16237 transitions. Word has length 71 [2023-12-15 17:53:15,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:15,560 INFO L495 AbstractCegarLoop]: Abstraction has 12174 states and 16237 transitions. [2023-12-15 17:53:15,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.285714285714286) internal successors, (176), 28 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 17:53:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12174 states and 16237 transitions. [2023-12-15 17:53:15,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-15 17:53:15,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:15,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:15,581 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 17:53:15,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:15,770 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:15,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:15,771 INFO L85 PathProgramCache]: Analyzing trace with hash -530731481, now seen corresponding path program 1 times [2023-12-15 17:53:15,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:15,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6161209] [2023-12-15 17:53:15,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:15,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:16,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:16,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:16,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6161209] [2023-12-15 17:53:16,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6161209] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:53:16,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027521193] [2023-12-15 17:53:16,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:16,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:16,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:53:16,164 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 17:53:16,184 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 17:53:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:16,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-15 17:53:16,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:53:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:16,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:53:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:17,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027521193] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:53:17,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:53:17,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 31 [2023-12-15 17:53:17,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396193952] [2023-12-15 17:53:17,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:53:17,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-15 17:53:17,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:17,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-15 17:53:17,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2023-12-15 17:53:17,405 INFO L87 Difference]: Start difference. First operand 12174 states and 16237 transitions. Second operand has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:19,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:19,869 INFO L93 Difference]: Finished difference Result 39419 states and 50496 transitions. [2023-12-15 17:53:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-15 17:53:19,869 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-15 17:53:19,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:19,905 INFO L225 Difference]: With dead ends: 39419 [2023-12-15 17:53:19,905 INFO L226 Difference]: Without dead ends: 29493 [2023-12-15 17:53:19,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=796, Invalid=3236, Unknown=0, NotChecked=0, Total=4032 [2023-12-15 17:53:19,920 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 19738 mSDsluCounter, 8056 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19738 SdHoareTripleChecker+Valid, 9568 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:19,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19738 Valid, 9568 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:53:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29493 states. [2023-12-15 17:53:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29493 to 16037. [2023-12-15 17:53:20,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16037 states, 16035 states have (on average 1.2936700966635486) internal successors, (20744), 16036 states have internal predecessors, (20744), 0 states have call successors, (0), 0 states 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 17:53:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16037 states to 16037 states and 20744 transitions. [2023-12-15 17:53:20,513 INFO L78 Accepts]: Start accepts. Automaton has 16037 states and 20744 transitions. Word has length 72 [2023-12-15 17:53:20,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:20,513 INFO L495 AbstractCegarLoop]: Abstraction has 16037 states and 20744 transitions. [2023-12-15 17:53:20,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.32258064516129) internal successors, (196), 31 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 17:53:20,513 INFO L276 IsEmpty]: Start isEmpty. Operand 16037 states and 20744 transitions. [2023-12-15 17:53:20,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-15 17:53:20,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:20,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:20,529 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 17:53:20,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:20,719 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:20,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2033955118, now seen corresponding path program 1 times [2023-12-15 17:53:20,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:20,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462019437] [2023-12-15 17:53:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:21,276 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 17:53:21,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:21,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462019437] [2023-12-15 17:53:21,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462019437] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:53:21,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074844672] [2023-12-15 17:53:21,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:21,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:21,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:53:21,278 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 17:53:21,308 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 17:53:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:21,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-15 17:53:21,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:53:22,864 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 17:53:22,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:53:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:24,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074844672] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:53:24,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:53:24,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 43 [2023-12-15 17:53:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117914959] [2023-12-15 17:53:24,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:53:24,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-15 17:53:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-15 17:53:24,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1584, Unknown=0, NotChecked=0, Total=1806 [2023-12-15 17:53:24,589 INFO L87 Difference]: Start difference. First operand 16037 states and 20744 transitions. Second operand has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 17:53:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:40,029 INFO L93 Difference]: Finished difference Result 38268 states and 47988 transitions. [2023-12-15 17:53:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-12-15 17:53:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2023-12-15 17:53:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:40,060 INFO L225 Difference]: With dead ends: 38268 [2023-12-15 17:53:40,060 INFO L226 Difference]: Without dead ends: 29714 [2023-12-15 17:53:40,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11203 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=6000, Invalid=23070, Unknown=0, NotChecked=0, Total=29070 [2023-12-15 17:53:40,072 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 12169 mSDsluCounter, 16022 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12169 SdHoareTripleChecker+Valid, 17567 SdHoareTripleChecker+Invalid, 1964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:40,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12169 Valid, 17567 Invalid, 1964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-15 17:53:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29714 states. [2023-12-15 17:53:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29714 to 22110. [2023-12-15 17:53:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22110 states, 22108 states have (on average 1.2729328749773838) internal successors, (28142), 22109 states have internal predecessors, (28142), 0 states have call successors, (0), 0 states 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 17:53:41,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22110 states to 22110 states and 28142 transitions. [2023-12-15 17:53:41,078 INFO L78 Accepts]: Start accepts. Automaton has 22110 states and 28142 transitions. Word has length 73 [2023-12-15 17:53:41,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:41,078 INFO L495 AbstractCegarLoop]: Abstraction has 22110 states and 28142 transitions. [2023-12-15 17:53:41,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.651162790697675) internal successors, (200), 43 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 17:53:41,078 INFO L276 IsEmpty]: Start isEmpty. Operand 22110 states and 28142 transitions. [2023-12-15 17:53:41,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-15 17:53:41,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:41,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:41,086 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 17:53:41,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-15 17:53:41,288 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:41,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash -101681833, now seen corresponding path program 1 times [2023-12-15 17:53:41,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:41,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609209160] [2023-12-15 17:53:41,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:41,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:41,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:41,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609209160] [2023-12-15 17:53:41,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609209160] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-15 17:53:41,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278190695] [2023-12-15 17:53:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:41,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:41,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 17:53:41,692 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 17:53:41,694 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 17:53:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:41,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-15 17:53:41,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-15 17:53:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:42,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-15 17:53:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:43,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278190695] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-15 17:53:43,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-15 17:53:43,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 32 [2023-12-15 17:53:43,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015281181] [2023-12-15 17:53:43,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-15 17:53:43,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-15 17:53:43,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:43,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-15 17:53:43,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=870, Unknown=0, NotChecked=0, Total=992 [2023-12-15 17:53:43,112 INFO L87 Difference]: Start difference. First operand 22110 states and 28142 transitions. Second operand has 32 states, 32 states have (on average 5.59375) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 17:53:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 17:53:46,504 INFO L93 Difference]: Finished difference Result 57878 states and 72071 transitions. [2023-12-15 17:53:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-15 17:53:46,505 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.59375) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-12-15 17:53:46,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 17:53:46,558 INFO L225 Difference]: With dead ends: 57878 [2023-12-15 17:53:46,558 INFO L226 Difference]: Without dead ends: 48564 [2023-12-15 17:53:46,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=630, Invalid=2232, Unknown=0, NotChecked=0, Total=2862 [2023-12-15 17:53:46,571 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 14516 mSDsluCounter, 15269 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14516 SdHoareTripleChecker+Valid, 16788 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:46,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14516 Valid, 16788 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:53:46,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48564 states. [2023-12-15 17:53:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48564 to 31168. [2023-12-15 17:53:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31168 states, 31166 states have (on average 1.2558236539819034) internal successors, (39139), 31167 states have internal predecessors, (39139), 0 states have call successors, (0), 0 states 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 17:53:48,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31168 states to 31168 states and 39139 transitions. [2023-12-15 17:53:48,122 INFO L78 Accepts]: Start accepts. Automaton has 31168 states and 39139 transitions. Word has length 74 [2023-12-15 17:53:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 17:53:48,123 INFO L495 AbstractCegarLoop]: Abstraction has 31168 states and 39139 transitions. [2023-12-15 17:53:48,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.59375) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 17:53:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 31168 states and 39139 transitions. [2023-12-15 17:53:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-12-15 17:53:48,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 17:53:48,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:53:48,131 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 17:53:48,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-15 17:53:48,348 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 17:53:48,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 17:53:48,348 INFO L85 PathProgramCache]: Analyzing trace with hash -740338265, now seen corresponding path program 1 times [2023-12-15 17:53:48,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 17:53:48,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289627396] [2023-12-15 17:53:48,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 17:53:48,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 17:53:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 17:53:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 17:53:48,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 17:53:48,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289627396] [2023-12-15 17:53:48,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289627396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 17:53:48,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 17:53:48,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 17:53:48,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156828037] [2023-12-15 17:53:48,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 17:53:48,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 17:53:48,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 17:53:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 17:53:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 17:53:48,674 INFO L87 Difference]: Start difference. First operand 31168 states and 39139 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-15 17:53:49,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 17:53:49,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 17:53:49,502 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 433 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-15 17:53:49,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 119 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-15 17:53:49,504 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-15 17:53:49,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 17:53:49,505 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (31168states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (12727 states constructed, input type IntersectNwa). [2023-12-15 17:53:49,506 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-15 17:53:49,508 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 17:53:49,511 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 17:53:49,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 05:53:49 BoogieIcfgContainer [2023-12-15 17:53:49,512 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 17:53:49,513 INFO L158 Benchmark]: Toolchain (without parser) took 58952.03ms. Allocated memory was 189.8MB in the beginning and 1.7GB in the end (delta: 1.5GB). Free memory was 111.6MB in the beginning and 883.2MB in the end (delta: -771.6MB). Peak memory consumption was 695.2MB. Max. memory is 8.0GB. [2023-12-15 17:53:49,513 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 139.3MB in the beginning and 139.2MB in the end (delta: 89.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 17:53:49,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1212.30ms. Allocated memory was 189.8MB in the beginning and 249.6MB in the end (delta: 59.8MB). Free memory was 111.5MB in the beginning and 156.0MB in the end (delta: -44.6MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. [2023-12-15 17:53:49,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 271.84ms. Allocated memory is still 249.6MB. Free memory was 156.0MB in the beginning and 136.6MB in the end (delta: 19.4MB). Peak memory consumption was 73.9MB. Max. memory is 8.0GB. [2023-12-15 17:53:49,514 INFO L158 Benchmark]: Boogie Preprocessor took 373.26ms. Allocated memory is still 249.6MB. Free memory was 136.6MB in the beginning and 93.6MB in the end (delta: 43.0MB). Peak memory consumption was 63.4MB. Max. memory is 8.0GB. [2023-12-15 17:53:49,516 INFO L158 Benchmark]: RCFGBuilder took 3209.81ms. Allocated memory was 249.6MB in the beginning and 672.1MB in the end (delta: 422.6MB). Free memory was 93.6MB in the beginning and 464.9MB in the end (delta: -371.2MB). Peak memory consumption was 162.5MB. Max. memory is 8.0GB. [2023-12-15 17:53:49,516 INFO L158 Benchmark]: TraceAbstraction took 53878.94ms. Allocated memory was 672.1MB in the beginning and 1.7GB in the end (delta: 983.6MB). Free memory was 463.8MB in the beginning and 883.2MB in the end (delta: -419.4MB). Peak memory consumption was 564.2MB. Max. memory is 8.0GB. [2023-12-15 17:53:49,521 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 139.3MB in the beginning and 139.2MB in the end (delta: 89.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1212.30ms. Allocated memory was 189.8MB in the beginning and 249.6MB in the end (delta: 59.8MB). Free memory was 111.5MB in the beginning and 156.0MB in the end (delta: -44.6MB). Peak memory consumption was 44.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 271.84ms. Allocated memory is still 249.6MB. Free memory was 156.0MB in the beginning and 136.6MB in the end (delta: 19.4MB). Peak memory consumption was 73.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 373.26ms. Allocated memory is still 249.6MB. Free memory was 136.6MB in the beginning and 93.6MB in the end (delta: 43.0MB). Peak memory consumption was 63.4MB. Max. memory is 8.0GB. * RCFGBuilder took 3209.81ms. Allocated memory was 249.6MB in the beginning and 672.1MB in the end (delta: 422.6MB). Free memory was 93.6MB in the beginning and 464.9MB in the end (delta: -371.2MB). Peak memory consumption was 162.5MB. Max. memory is 8.0GB. * TraceAbstraction took 53878.94ms. Allocated memory was 672.1MB in the beginning and 1.7GB in the end (delta: 983.6MB). Free memory was 463.8MB in the beginning and 883.2MB in the end (delta: -419.4MB). Peak memory consumption was 564.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 469]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 469). Cancelled while NwaCegarLoop was constructing difference of abstraction (31168states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (12727 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 364]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 364). Cancelled while NwaCegarLoop was constructing difference of abstraction (31168states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (12727 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 822 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 53.8s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 129553 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 129553 mSDsluCounter, 124771 SdHoareTripleChecker+Invalid, 5.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87548 mSDsCounter, 1166 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9122 IncrementalHoareTripleChecker+Invalid, 10288 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1166 mSolverCounterUnsat, 37223 mSDtfsCounter, 9122 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1314 GetRequests, 795 SyntacticMatches, 1 SemanticMatches, 518 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15370 ImplicationChecksByTransitivity, 21.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31168occurred in iteration=25, InterpolantAutomatonStates: 383, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 57577 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 1887 NumberOfCodeBlocks, 1887 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2280 ConstructedInterpolants, 0 QuantifiedInterpolants, 27160 SizeOfPredicates, 40 NumberOfNonLiveVariables, 2117 ConjunctsInSsa, 116 ConjunctsInUnsatCore, 38 InterpolantComputations, 20 PerfectInterpolantSequences, 282/376 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