./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7faac2784283dee994e5ed7918d7d85d1512ca1f167512880a4c4b876443c5f9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:39:14,746 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:39:14,820 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:39:14,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:39:14,826 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:39:14,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:39:14,856 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:39:14,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:39:14,857 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:39:14,857 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:39:14,858 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:39:14,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:39:14,859 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:39:14,861 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:39:14,861 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:39:14,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:39:14,862 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:39:14,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:39:14,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:39:14,863 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:39:14,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:39:14,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:39:14,864 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:39:14,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:39:14,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:39:14,865 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:39:14,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:39:14,865 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:39:14,866 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:39:14,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:39:14,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:39:14,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:39:14,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:39:14,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:39:14,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:39:14,868 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:39:14,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:39:14,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:39:14,868 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:39:14,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:39:14,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:39:14,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:39:14,869 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7faac2784283dee994e5ed7918d7d85d1512ca1f167512880a4c4b876443c5f9 [2024-11-16 09:39:15,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:39:15,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:39:15,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:39:15,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:39:15,162 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:39:15,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-11-16 09:39:16,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:39:17,082 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:39:17,084 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-11-16 09:39:17,126 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687b6ff2b/0f1a5297c67b43eaa121fc3f4ff99d2e/FLAGa8c470821 [2024-11-16 09:39:17,143 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/687b6ff2b/0f1a5297c67b43eaa121fc3f4ff99d2e [2024-11-16 09:39:17,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:39:17,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:39:17,151 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:39:17,152 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:39:17,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:39:17,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:39:17" (1/1) ... [2024-11-16 09:39:17,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee89e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:17, skipping insertion in model container [2024-11-16 09:39:17,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:39:17" (1/1) ... [2024-11-16 09:39:17,278 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:39:17,656 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8786,8799] [2024-11-16 09:39:17,724 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[16076,16089] [2024-11-16 09:39:18,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:39:18,427 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:39:18,460 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[8786,8799] [2024-11-16 09:39:18,473 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c[16076,16089] [2024-11-16 09:39:18,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:39:18,932 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:39:18,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18 WrapperNode [2024-11-16 09:39:18,933 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:39:18,934 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:39:18,934 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:39:18,934 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:39:18,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,272 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5035 [2024-11-16 09:39:19,273 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:39:19,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:39:19,274 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:39:19,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:39:19,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,509 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]. [2024-11-16 09:39:19,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,656 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,761 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:39:19,764 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:39:19,765 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:39:19,765 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:39:19,766 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (1/1) ... [2024-11-16 09:39:19,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:39:19,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:39:19,800 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) [2024-11-16 09:39:19,802 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 [2024-11-16 09:39:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:39:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:39:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:39:19,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:39:19,969 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:39:19,971 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:39:24,177 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L5024: havoc calculate_output3_#t~ret35#1; [2024-11-16 09:39:24,177 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L2055: havoc calculate_output_#t~ret33#1; [2024-11-16 09:39:24,177 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3534: havoc calculate_output2_#t~ret34#1; [2024-11-16 09:39:24,439 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-11-16 09:39:24,439 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:39:24,473 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:39:24,476 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:39:24,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:39:24 BoogieIcfgContainer [2024-11-16 09:39:24,477 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:39:24,479 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:39:24,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:39:24,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:39:24,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:39:17" (1/3) ... [2024-11-16 09:39:24,486 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7bee94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:39:24, skipping insertion in model container [2024-11-16 09:39:24,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:39:18" (2/3) ... [2024-11-16 09:39:24,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7bee94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:39:24, skipping insertion in model container [2024-11-16 09:39:24,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:39:24" (3/3) ... [2024-11-16 09:39:24,489 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label02.c [2024-11-16 09:39:24,505 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:39:24,506 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:39:24,601 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:39:24,609 INFO L333 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, 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;@1b1bf08a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:39:24,609 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:39:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 892 states, 889 states have (on average 1.8987626546681664) internal successors, (1688), 891 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 09:39:24,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:24,631 INFO L215 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] [2024-11-16 09:39:24,632 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:24,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:24,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1707604068, now seen corresponding path program 1 times [2024-11-16 09:39:24,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:24,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131116216] [2024-11-16 09:39:24,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:24,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:24,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131116216] [2024-11-16 09:39:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131116216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:39:24,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002815894] [2024-11-16 09:39:24,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:24,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:39:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:24,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:39:24,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:39:24,918 INFO L87 Difference]: Start difference. First operand has 892 states, 889 states have (on average 1.8987626546681664) internal successors, (1688), 891 states have internal predecessors, (1688), 0 states have call successors, (0), 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 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:25,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:25,011 INFO L93 Difference]: Finished difference Result 1751 states and 3318 transitions. [2024-11-16 09:39:25,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:39:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-16 09:39:25,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:25,039 INFO L225 Difference]: With dead ends: 1751 [2024-11-16 09:39:25,040 INFO L226 Difference]: Without dead ends: 824 [2024-11-16 09:39:25,049 INFO L431 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 [2024-11-16 09:39:25,052 INFO L432 NwaCegarLoop]: 1617 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:25,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:25,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-16 09:39:25,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2024-11-16 09:39:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 822 states have (on average 1.889294403892944) internal successors, (1553), 823 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1553 transitions. [2024-11-16 09:39:25,144 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1553 transitions. Word has length 24 [2024-11-16 09:39:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:25,145 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1553 transitions. [2024-11-16 09:39:25,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1553 transitions. [2024-11-16 09:39:25,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-16 09:39:25,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:25,149 INFO L215 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] [2024-11-16 09:39:25,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:39:25,150 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:25,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:25,150 INFO L85 PathProgramCache]: Analyzing trace with hash 710531715, now seen corresponding path program 1 times [2024-11-16 09:39:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:25,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80386202] [2024-11-16 09:39:25,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:25,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:25,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:25,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:25,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80386202] [2024-11-16 09:39:25,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80386202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:25,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:25,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:39:25,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819846368] [2024-11-16 09:39:25,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:25,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:39:25,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:25,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:39:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:39:25,451 INFO L87 Difference]: Start difference. First operand 824 states and 1553 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:25,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:25,589 INFO L93 Difference]: Finished difference Result 867 states and 1617 transitions. [2024-11-16 09:39:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:39:25,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-16 09:39:25,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:25,594 INFO L225 Difference]: With dead ends: 867 [2024-11-16 09:39:25,594 INFO L226 Difference]: Without dead ends: 824 [2024-11-16 09:39:25,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:39:25,596 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 0 mSDsluCounter, 4625 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6176 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:25,597 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6176 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-16 09:39:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2024-11-16 09:39:25,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 822 states have (on average 1.8613138686131387) internal successors, (1530), 823 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1530 transitions. [2024-11-16 09:39:25,620 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1530 transitions. Word has length 24 [2024-11-16 09:39:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:25,620 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 1530 transitions. [2024-11-16 09:39:25,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1530 transitions. [2024-11-16 09:39:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-16 09:39:25,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:25,622 INFO L215 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] [2024-11-16 09:39:25,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:39:25,623 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:25,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:25,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1553013747, now seen corresponding path program 1 times [2024-11-16 09:39:25,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:25,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313052724] [2024-11-16 09:39:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:25,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:25,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:25,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313052724] [2024-11-16 09:39:25,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313052724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:25,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:25,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:25,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235710658] [2024-11-16 09:39:25,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:25,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:25,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:25,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:25,831 INFO L87 Difference]: Start difference. First operand 824 states and 1530 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:26,047 INFO L93 Difference]: Finished difference Result 1136 states and 2010 transitions. [2024-11-16 09:39:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 09:39:26,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2024-11-16 09:39:26,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:26,052 INFO L225 Difference]: With dead ends: 1136 [2024-11-16 09:39:26,053 INFO L226 Difference]: Without dead ends: 1097 [2024-11-16 09:39:26,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:39:26,054 INFO L432 NwaCegarLoop]: 1526 mSDtfsCounter, 6247 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6247 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:26,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6247 Valid, 2362 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2024-11-16 09:39:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 860. [2024-11-16 09:39:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8484848484848484) internal successors, (1586), 859 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1586 transitions. [2024-11-16 09:39:26,078 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1586 transitions. Word has length 46 [2024-11-16 09:39:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:26,079 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1586 transitions. [2024-11-16 09:39:26,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1586 transitions. [2024-11-16 09:39:26,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 09:39:26,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:26,081 INFO L215 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, 1] [2024-11-16 09:39:26,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:39:26,081 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:26,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash 196801391, now seen corresponding path program 1 times [2024-11-16 09:39:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:26,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578123075] [2024-11-16 09:39:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:26,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:26,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578123075] [2024-11-16 09:39:26,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578123075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:26,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:26,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:26,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340818550] [2024-11-16 09:39:26,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:26,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:26,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:26,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:26,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:26,359 INFO L87 Difference]: Start difference. First operand 860 states and 1586 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:26,488 INFO L93 Difference]: Finished difference Result 938 states and 1704 transitions. [2024-11-16 09:39:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:26,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-16 09:39:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:26,492 INFO L225 Difference]: With dead ends: 938 [2024-11-16 09:39:26,492 INFO L226 Difference]: Without dead ends: 863 [2024-11-16 09:39:26,493 INFO L431 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 [2024-11-16 09:39:26,494 INFO L432 NwaCegarLoop]: 1524 mSDtfsCounter, 4458 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4458 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:26,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4458 Valid, 1692 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:26,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-11-16 09:39:26,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 860. [2024-11-16 09:39:26,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 858 states have (on average 1.8473193473193472) internal successors, (1585), 859 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1585 transitions. [2024-11-16 09:39:26,511 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1585 transitions. Word has length 48 [2024-11-16 09:39:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:26,511 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1585 transitions. [2024-11-16 09:39:26,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1585 transitions. [2024-11-16 09:39:26,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-16 09:39:26,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:26,513 INFO L215 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, 1, 1] [2024-11-16 09:39:26,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:39:26,513 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:26,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:26,514 INFO L85 PathProgramCache]: Analyzing trace with hash -765272266, now seen corresponding path program 1 times [2024-11-16 09:39:26,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:26,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111014510] [2024-11-16 09:39:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:26,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:26,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111014510] [2024-11-16 09:39:26,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111014510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:26,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:26,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:26,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459069205] [2024-11-16 09:39:26,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:26,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:26,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:26,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:26,584 INFO L87 Difference]: Start difference. First operand 860 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:26,612 INFO L93 Difference]: Finished difference Result 998 states and 1795 transitions. [2024-11-16 09:39:26,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:26,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-16 09:39:26,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:26,618 INFO L225 Difference]: With dead ends: 998 [2024-11-16 09:39:26,619 INFO L226 Difference]: Without dead ends: 923 [2024-11-16 09:39:26,621 INFO L431 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 [2024-11-16 09:39:26,622 INFO L432 NwaCegarLoop]: 1536 mSDtfsCounter, 1478 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 1591 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 [2024-11-16 09:39:26,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 1591 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:26,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2024-11-16 09:39:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 920. [2024-11-16 09:39:26,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 918 states have (on average 1.8246187363834423) internal successors, (1675), 919 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1675 transitions. [2024-11-16 09:39:26,645 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1675 transitions. Word has length 49 [2024-11-16 09:39:26,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:26,646 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1675 transitions. [2024-11-16 09:39:26,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,647 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1675 transitions. [2024-11-16 09:39:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:26,648 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:26,648 INFO L215 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, 1, 1, 1] [2024-11-16 09:39:26,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:39:26,649 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:26,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1807690319, now seen corresponding path program 1 times [2024-11-16 09:39:26,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:26,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826782594] [2024-11-16 09:39:26,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:26,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:26,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:26,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826782594] [2024-11-16 09:39:26,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826782594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:26,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573501775] [2024-11-16 09:39:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:26,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:26,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:26,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:26,716 INFO L87 Difference]: Start difference. First operand 920 states and 1675 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:26,744 INFO L93 Difference]: Finished difference Result 1065 states and 1895 transitions. [2024-11-16 09:39:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:26,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:26,750 INFO L225 Difference]: With dead ends: 1065 [2024-11-16 09:39:26,750 INFO L226 Difference]: Without dead ends: 990 [2024-11-16 09:39:26,751 INFO L431 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 [2024-11-16 09:39:26,753 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 1490 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:26,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1635 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:26,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2024-11-16 09:39:26,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 987. [2024-11-16 09:39:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 985 states have (on average 1.8020304568527918) internal successors, (1775), 986 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1775 transitions. [2024-11-16 09:39:26,779 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1775 transitions. Word has length 50 [2024-11-16 09:39:26,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:26,779 INFO L471 AbstractCegarLoop]: Abstraction has 987 states and 1775 transitions. [2024-11-16 09:39:26,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,779 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1775 transitions. [2024-11-16 09:39:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:26,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:26,781 INFO L215 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, 1, 1, 1] [2024-11-16 09:39:26,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:39:26,781 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:26,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:26,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1485867249, now seen corresponding path program 1 times [2024-11-16 09:39:26,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:26,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073677159] [2024-11-16 09:39:26,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:26,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:26,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073677159] [2024-11-16 09:39:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073677159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:26,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:26,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:26,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878290799] [2024-11-16 09:39:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:26,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:26,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:26,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:26,850 INFO L87 Difference]: Start difference. First operand 987 states and 1775 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:26,921 INFO L93 Difference]: Finished difference Result 1361 states and 2337 transitions. [2024-11-16 09:39:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:26,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:26,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:26,926 INFO L225 Difference]: With dead ends: 1361 [2024-11-16 09:39:26,926 INFO L226 Difference]: Without dead ends: 1162 [2024-11-16 09:39:26,926 INFO L431 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 [2024-11-16 09:39:26,927 INFO L432 NwaCegarLoop]: 1576 mSDtfsCounter, 1488 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:26,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1641 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:26,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2024-11-16 09:39:26,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1159. [2024-11-16 09:39:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1157 states have (on average 1.7519446845289541) internal successors, (2027), 1158 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2027 transitions. [2024-11-16 09:39:26,949 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2027 transitions. Word has length 50 [2024-11-16 09:39:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:26,949 INFO L471 AbstractCegarLoop]: Abstraction has 1159 states and 2027 transitions. [2024-11-16 09:39:26,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2027 transitions. [2024-11-16 09:39:26,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:26,950 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:26,951 INFO L215 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, 1, 1, 1] [2024-11-16 09:39:26,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:39:26,951 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:26,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:26,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1471417393, now seen corresponding path program 1 times [2024-11-16 09:39:26,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:26,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033910193] [2024-11-16 09:39:26,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:26,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:27,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:27,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033910193] [2024-11-16 09:39:27,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033910193] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:27,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:27,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:27,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500490285] [2024-11-16 09:39:27,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:27,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:27,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:27,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:27,004 INFO L87 Difference]: Start difference. First operand 1159 states and 2027 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:27,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:27,046 INFO L93 Difference]: Finished difference Result 1853 states and 3051 transitions. [2024-11-16 09:39:27,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:27,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:27,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:27,053 INFO L225 Difference]: With dead ends: 1853 [2024-11-16 09:39:27,053 INFO L226 Difference]: Without dead ends: 1482 [2024-11-16 09:39:27,054 INFO L431 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 [2024-11-16 09:39:27,055 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 1486 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:27,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1643 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:27,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2024-11-16 09:39:27,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1479. [2024-11-16 09:39:27,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 1.6811103588354772) internal successors, (2483), 1478 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:27,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2483 transitions. [2024-11-16 09:39:27,084 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2483 transitions. Word has length 50 [2024-11-16 09:39:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:27,085 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 2483 transitions. [2024-11-16 09:39:27,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2483 transitions. [2024-11-16 09:39:27,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:27,086 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:27,086 INFO L215 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, 1, 1, 1] [2024-11-16 09:39:27,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:39:27,087 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:27,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:27,087 INFO L85 PathProgramCache]: Analyzing trace with hash -731947151, now seen corresponding path program 1 times [2024-11-16 09:39:27,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:27,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222932197] [2024-11-16 09:39:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:27,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:27,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:27,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222932197] [2024-11-16 09:39:27,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222932197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:27,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:27,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:27,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998295213] [2024-11-16 09:39:27,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:27,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:27,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:27,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:27,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:27,145 INFO L87 Difference]: Start difference. First operand 1479 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:27,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:27,185 INFO L93 Difference]: Finished difference Result 2765 states and 4335 transitions. [2024-11-16 09:39:27,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:27,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:27,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:27,193 INFO L225 Difference]: With dead ends: 2765 [2024-11-16 09:39:27,193 INFO L226 Difference]: Without dead ends: 2074 [2024-11-16 09:39:27,195 INFO L431 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 [2024-11-16 09:39:27,195 INFO L432 NwaCegarLoop]: 1572 mSDtfsCounter, 1484 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:27,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1645 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2024-11-16 09:39:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2071. [2024-11-16 09:39:27,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 2069 states have (on average 1.5944900918318028) internal successors, (3299), 2070 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 3299 transitions. [2024-11-16 09:39:27,241 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 3299 transitions. Word has length 50 [2024-11-16 09:39:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:27,241 INFO L471 AbstractCegarLoop]: Abstraction has 2071 states and 3299 transitions. [2024-11-16 09:39:27,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:27,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 3299 transitions. [2024-11-16 09:39:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:39:27,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:27,242 INFO L215 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, 1, 1, 1] [2024-11-16 09:39:27,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:39:27,243 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:27,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:27,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1256224206, now seen corresponding path program 1 times [2024-11-16 09:39:27,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:27,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520396423] [2024-11-16 09:39:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:27,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:27,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:27,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520396423] [2024-11-16 09:39:27,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520396423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:27,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:39:27,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747522079] [2024-11-16 09:39:27,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:27,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:39:27,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:39:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:39:27,387 INFO L87 Difference]: Start difference. First operand 2071 states and 3299 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:27,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:27,436 INFO L93 Difference]: Finished difference Result 2170 states and 3429 transitions. [2024-11-16 09:39:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:39:27,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-16 09:39:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:27,444 INFO L225 Difference]: With dead ends: 2170 [2024-11-16 09:39:27,444 INFO L226 Difference]: Without dead ends: 2167 [2024-11-16 09:39:27,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:39:27,445 INFO L432 NwaCegarLoop]: 1527 mSDtfsCounter, 0 mSDsluCounter, 4572 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6099 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:27,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6099 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:27,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2024-11-16 09:39:27,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 2167. [2024-11-16 09:39:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2165 states have (on average 1.5644341801385682) internal successors, (3387), 2166 states have internal predecessors, (3387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3387 transitions. [2024-11-16 09:39:27,487 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3387 transitions. Word has length 50 [2024-11-16 09:39:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:27,488 INFO L471 AbstractCegarLoop]: Abstraction has 2167 states and 3387 transitions. [2024-11-16 09:39:27,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3387 transitions. [2024-11-16 09:39:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 09:39:27,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:27,489 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:27,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:39:27,490 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:27,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash -39833182, now seen corresponding path program 1 times [2024-11-16 09:39:27,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:27,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013258625] [2024-11-16 09:39:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:27,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:27,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013258625] [2024-11-16 09:39:27,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013258625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:27,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:27,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:27,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656264535] [2024-11-16 09:39:27,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:27,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 09:39:27,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:27,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 09:39:27,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:39:27,653 INFO L87 Difference]: Start difference. First operand 2167 states and 3387 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:32,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:32,977 INFO L93 Difference]: Finished difference Result 4426 states and 7700 transitions. [2024-11-16 09:39:32,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 09:39:32,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-16 09:39:32,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:32,990 INFO L225 Difference]: With dead ends: 4426 [2024-11-16 09:39:32,990 INFO L226 Difference]: Without dead ends: 3671 [2024-11-16 09:39:32,992 INFO L431 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 [2024-11-16 09:39:32,993 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 2373 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2373 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:32,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2373 Valid, 807 Invalid, 6399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-16 09:39:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2024-11-16 09:39:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3671. [2024-11-16 09:39:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3669 states have (on average 1.4622512946306896) internal successors, (5365), 3670 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5365 transitions. [2024-11-16 09:39:33,120 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5365 transitions. Word has length 65 [2024-11-16 09:39:33,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:33,121 INFO L471 AbstractCegarLoop]: Abstraction has 3671 states and 5365 transitions. [2024-11-16 09:39:33,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5365 transitions. [2024-11-16 09:39:33,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:39:33,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:33,123 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:33,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:39:33,123 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:33,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:33,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2040269213, now seen corresponding path program 1 times [2024-11-16 09:39:33,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:33,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336551521] [2024-11-16 09:39:33,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:33,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:39:33,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:33,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336551521] [2024-11-16 09:39:33,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336551521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:33,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:33,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:33,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521737269] [2024-11-16 09:39:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:33,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:33,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:33,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:33,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:33,280 INFO L87 Difference]: Start difference. First operand 3671 states and 5365 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:33,482 INFO L93 Difference]: Finished difference Result 9118 states and 12911 transitions. [2024-11-16 09:39:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:33,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:39:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:33,518 INFO L225 Difference]: With dead ends: 9118 [2024-11-16 09:39:33,519 INFO L226 Difference]: Without dead ends: 8123 [2024-11-16 09:39:33,525 INFO L431 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 [2024-11-16 09:39:33,526 INFO L432 NwaCegarLoop]: 1585 mSDtfsCounter, 4665 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 3423 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:33,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4665 Valid, 3423 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:33,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8123 states. [2024-11-16 09:39:33,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8123 to 4863. [2024-11-16 09:39:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4863 states, 4861 states have (on average 1.4394157580744702) internal successors, (6997), 4862 states have internal predecessors, (6997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4863 states to 4863 states and 6997 transitions. [2024-11-16 09:39:33,660 INFO L78 Accepts]: Start accepts. Automaton has 4863 states and 6997 transitions. Word has length 69 [2024-11-16 09:39:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:33,661 INFO L471 AbstractCegarLoop]: Abstraction has 4863 states and 6997 transitions. [2024-11-16 09:39:33,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4863 states and 6997 transitions. [2024-11-16 09:39:33,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:39:33,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:33,665 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:33,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:39:33,665 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:33,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:33,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1038859485, now seen corresponding path program 1 times [2024-11-16 09:39:33,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:33,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754181015] [2024-11-16 09:39:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:33,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:33,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:39:33,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754181015] [2024-11-16 09:39:33,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754181015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:33,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:33,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:33,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673063047] [2024-11-16 09:39:33,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:33,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:33,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:33,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:33,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:33,803 INFO L87 Difference]: Start difference. First operand 4863 states and 6997 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:34,030 INFO L93 Difference]: Finished difference Result 10494 states and 14807 transitions. [2024-11-16 09:39:34,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:34,031 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:39:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:34,057 INFO L225 Difference]: With dead ends: 10494 [2024-11-16 09:39:34,058 INFO L226 Difference]: Without dead ends: 9115 [2024-11-16 09:39:34,063 INFO L431 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 [2024-11-16 09:39:34,064 INFO L432 NwaCegarLoop]: 1586 mSDtfsCounter, 4667 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:34,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3397 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9115 states. [2024-11-16 09:39:34,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9115 to 6735. [2024-11-16 09:39:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6735 states, 6733 states have (on average 1.4194267042922917) internal successors, (9557), 6734 states have internal predecessors, (9557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6735 states to 6735 states and 9557 transitions. [2024-11-16 09:39:34,268 INFO L78 Accepts]: Start accepts. Automaton has 6735 states and 9557 transitions. Word has length 69 [2024-11-16 09:39:34,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:34,269 INFO L471 AbstractCegarLoop]: Abstraction has 6735 states and 9557 transitions. [2024-11-16 09:39:34,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:34,269 INFO L276 IsEmpty]: Start isEmpty. Operand 6735 states and 9557 transitions. [2024-11-16 09:39:34,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:39:34,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:34,271 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:34,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:39:34,271 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:34,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1024409629, now seen corresponding path program 1 times [2024-11-16 09:39:34,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154355768] [2024-11-16 09:39:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:34,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 09:39:34,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:34,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154355768] [2024-11-16 09:39:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154355768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:34,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:34,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:34,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406816786] [2024-11-16 09:39:34,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:34,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:34,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:34,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:34,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:34,485 INFO L87 Difference]: Start difference. First operand 6735 states and 9557 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-11-16 09:39:34,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:34,795 INFO L93 Difference]: Finished difference Result 11870 states and 16695 transitions. [2024-11-16 09:39:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:34,796 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 69 [2024-11-16 09:39:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:34,817 INFO L225 Difference]: With dead ends: 11870 [2024-11-16 09:39:34,817 INFO L226 Difference]: Without dead ends: 10491 [2024-11-16 09:39:34,823 INFO L431 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 [2024-11-16 09:39:34,825 INFO L432 NwaCegarLoop]: 1583 mSDtfsCounter, 4691 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4691 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:34,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4691 Valid, 3378 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:34,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10491 states. [2024-11-16 09:39:35,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10491 to 8111. [2024-11-16 09:39:35,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8111 states, 8109 states have (on average 1.4113947465778764) internal successors, (11445), 8110 states have internal predecessors, (11445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8111 states to 8111 states and 11445 transitions. [2024-11-16 09:39:35,116 INFO L78 Accepts]: Start accepts. Automaton has 8111 states and 11445 transitions. Word has length 69 [2024-11-16 09:39:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:35,117 INFO L471 AbstractCegarLoop]: Abstraction has 8111 states and 11445 transitions. [2024-11-16 09:39:35,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2024-11-16 09:39:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 8111 states and 11445 transitions. [2024-11-16 09:39:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:39:35,120 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:35,120 INFO L215 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, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:35,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:39:35,121 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:35,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1178954915, now seen corresponding path program 1 times [2024-11-16 09:39:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400088118] [2024-11-16 09:39:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:35,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:35,254 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-16 09:39:35,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:35,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400088118] [2024-11-16 09:39:35,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400088118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:35,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:35,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:39:35,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98849208] [2024-11-16 09:39:35,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:35,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:39:35,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:39:35,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:39:35,257 INFO L87 Difference]: Start difference. First operand 8111 states and 11445 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:35,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:35,533 INFO L93 Difference]: Finished difference Result 13246 states and 18583 transitions. [2024-11-16 09:39:35,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 09:39:35,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-16 09:39:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:35,555 INFO L225 Difference]: With dead ends: 13246 [2024-11-16 09:39:35,555 INFO L226 Difference]: Without dead ends: 11867 [2024-11-16 09:39:35,562 INFO L431 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 [2024-11-16 09:39:35,563 INFO L432 NwaCegarLoop]: 1584 mSDtfsCounter, 4681 mSDsluCounter, 1820 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:35,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 3404 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:39:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2024-11-16 09:39:35,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 9487. [2024-11-16 09:39:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9487 states, 9485 states have (on average 1.4056931997891406) internal successors, (13333), 9486 states have internal predecessors, (13333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:35,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9487 states to 9487 states and 13333 transitions. [2024-11-16 09:39:35,856 INFO L78 Accepts]: Start accepts. Automaton has 9487 states and 13333 transitions. Word has length 69 [2024-11-16 09:39:35,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:35,857 INFO L471 AbstractCegarLoop]: Abstraction has 9487 states and 13333 transitions. [2024-11-16 09:39:35,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 9487 states and 13333 transitions. [2024-11-16 09:39:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 09:39:35,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:35,859 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:39:35,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:39:35,859 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:35,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:35,860 INFO L85 PathProgramCache]: Analyzing trace with hash 188019967, now seen corresponding path program 1 times [2024-11-16 09:39:35,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:35,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506166600] [2024-11-16 09:39:35,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:35,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:35,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:35,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506166600] [2024-11-16 09:39:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506166600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:35,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:35,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:35,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591122130] [2024-11-16 09:39:35,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:35,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:35,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:35,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:35,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:35,949 INFO L87 Difference]: Start difference. First operand 9487 states and 13333 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:36,093 INFO L93 Difference]: Finished difference Result 16685 states and 23217 transitions. [2024-11-16 09:39:36,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:36,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 09:39:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:36,110 INFO L225 Difference]: With dead ends: 16685 [2024-11-16 09:39:36,110 INFO L226 Difference]: Without dead ends: 9490 [2024-11-16 09:39:36,120 INFO L431 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 [2024-11-16 09:39:36,120 INFO L432 NwaCegarLoop]: 1558 mSDtfsCounter, 36 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:36,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3076 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9490 states. [2024-11-16 09:39:36,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9490 to 9487. [2024-11-16 09:39:36,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9487 states, 9485 states have (on average 1.392619926199262) internal successors, (13209), 9486 states have internal predecessors, (13209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9487 states to 9487 states and 13209 transitions. [2024-11-16 09:39:36,325 INFO L78 Accepts]: Start accepts. Automaton has 9487 states and 13209 transitions. Word has length 71 [2024-11-16 09:39:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:36,325 INFO L471 AbstractCegarLoop]: Abstraction has 9487 states and 13209 transitions. [2024-11-16 09:39:36,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 9487 states and 13209 transitions. [2024-11-16 09:39:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 09:39:36,327 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:36,327 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-16 09:39:36,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 09:39:36,327 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:36,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:36,328 INFO L85 PathProgramCache]: Analyzing trace with hash -94054337, now seen corresponding path program 1 times [2024-11-16 09:39:36,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:36,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057556095] [2024-11-16 09:39:36,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:36,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:36,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:36,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057556095] [2024-11-16 09:39:36,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057556095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:36,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:36,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:36,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235226030] [2024-11-16 09:39:36,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:36,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:36,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:36,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:36,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:36,417 INFO L87 Difference]: Start difference. First operand 9487 states and 13209 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:36,493 INFO L93 Difference]: Finished difference Result 12240 states and 16973 transitions. [2024-11-16 09:39:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:36,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-16 09:39:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:36,502 INFO L225 Difference]: With dead ends: 12240 [2024-11-16 09:39:36,502 INFO L226 Difference]: Without dead ends: 5045 [2024-11-16 09:39:36,510 INFO L431 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 [2024-11-16 09:39:36,511 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 32 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:36,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3073 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:36,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5045 states. [2024-11-16 09:39:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5045 to 5035. [2024-11-16 09:39:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5035 states, 5033 states have (on average 1.4228094575799721) internal successors, (7161), 5034 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5035 states to 5035 states and 7161 transitions. [2024-11-16 09:39:36,600 INFO L78 Accepts]: Start accepts. Automaton has 5035 states and 7161 transitions. Word has length 71 [2024-11-16 09:39:36,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:36,601 INFO L471 AbstractCegarLoop]: Abstraction has 5035 states and 7161 transitions. [2024-11-16 09:39:36,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 5035 states and 7161 transitions. [2024-11-16 09:39:36,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:39:36,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:36,603 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:36,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 09:39:36,603 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:36,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:36,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1636853377, now seen corresponding path program 1 times [2024-11-16 09:39:36,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:36,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039853920] [2024-11-16 09:39:36,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:36,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:36,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:36,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039853920] [2024-11-16 09:39:36,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039853920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:36,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:36,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:36,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494988464] [2024-11-16 09:39:36,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:36,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:36,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:36,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:36,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:36,693 INFO L87 Difference]: Start difference. First operand 5035 states and 7161 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:36,738 INFO L93 Difference]: Finished difference Result 6405 states and 9013 transitions. [2024-11-16 09:39:36,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:36,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-16 09:39:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:36,747 INFO L225 Difference]: With dead ends: 6405 [2024-11-16 09:39:36,747 INFO L226 Difference]: Without dead ends: 3674 [2024-11-16 09:39:36,750 INFO L431 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 [2024-11-16 09:39:36,751 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 30 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:36,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3052 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:36,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2024-11-16 09:39:36,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3671. [2024-11-16 09:39:36,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3669 states have (on average 1.4420823112564731) internal successors, (5291), 3670 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 5291 transitions. [2024-11-16 09:39:36,854 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 5291 transitions. Word has length 73 [2024-11-16 09:39:36,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:36,854 INFO L471 AbstractCegarLoop]: Abstraction has 3671 states and 5291 transitions. [2024-11-16 09:39:36,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 5291 transitions. [2024-11-16 09:39:36,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-16 09:39:36,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:36,856 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:36,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 09:39:36,856 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:36,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:36,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1090931768, now seen corresponding path program 1 times [2024-11-16 09:39:36,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:36,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914154694] [2024-11-16 09:39:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:36,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:36,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:36,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:36,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914154694] [2024-11-16 09:39:36,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914154694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:39:36,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:39:36,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:39:36,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188455509] [2024-11-16 09:39:36,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:39:36,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:39:36,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:36,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:39:36,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:39:36,941 INFO L87 Difference]: Start difference. First operand 3671 states and 5291 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:36,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:36,974 INFO L93 Difference]: Finished difference Result 4359 states and 6208 transitions. [2024-11-16 09:39:36,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:39:36,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-16 09:39:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:36,980 INFO L225 Difference]: With dead ends: 4359 [2024-11-16 09:39:36,980 INFO L226 Difference]: Without dead ends: 2992 [2024-11-16 09:39:36,982 INFO L431 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 [2024-11-16 09:39:36,983 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 27 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:36,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3037 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:39:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2992 states. [2024-11-16 09:39:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2992 to 2989. [2024-11-16 09:39:37,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2987 states have (on average 1.4620020087043857) internal successors, (4367), 2988 states have internal predecessors, (4367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 4367 transitions. [2024-11-16 09:39:37,025 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 4367 transitions. Word has length 75 [2024-11-16 09:39:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:37,026 INFO L471 AbstractCegarLoop]: Abstraction has 2989 states and 4367 transitions. [2024-11-16 09:39:37,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 4367 transitions. [2024-11-16 09:39:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 09:39:37,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:37,027 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:37,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 09:39:37,027 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:37,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:37,028 INFO L85 PathProgramCache]: Analyzing trace with hash -86744529, now seen corresponding path program 1 times [2024-11-16 09:39:37,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:37,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132876854] [2024-11-16 09:39:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:37,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:37,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:37,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132876854] [2024-11-16 09:39:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132876854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:39:37,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960100294] [2024-11-16 09:39:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:37,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:37,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:39:37,375 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) [2024-11-16 09:39:37,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:39:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:37,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 09:39:37,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:39:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:38,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:39:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:40,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960100294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:39:40,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:39:40,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 33 [2024-11-16 09:39:40,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906107138] [2024-11-16 09:39:40,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:39:40,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 09:39:40,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:40,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 09:39:40,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=904, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 09:39:40,439 INFO L87 Difference]: Start difference. First operand 2989 states and 4367 transitions. Second operand has 33 states, 33 states have (on average 6.393939393939394) internal successors, (211), 33 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:44,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:44,690 INFO L93 Difference]: Finished difference Result 6596 states and 9124 transitions. [2024-11-16 09:39:44,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-16 09:39:44,690 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.393939393939394) internal successors, (211), 33 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 09:39:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:44,700 INFO L225 Difference]: With dead ends: 6596 [2024-11-16 09:39:44,700 INFO L226 Difference]: Without dead ends: 5911 [2024-11-16 09:39:44,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2034 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1482, Invalid=6000, Unknown=0, NotChecked=0, Total=7482 [2024-11-16 09:39:44,706 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 20308 mSDsluCounter, 9481 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20308 SdHoareTripleChecker+Valid, 10978 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:44,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20308 Valid, 10978 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:39:44,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5911 states. [2024-11-16 09:39:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5911 to 5876. [2024-11-16 09:39:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 5874 states have (on average 1.3791283622744297) internal successors, (8101), 5875 states have internal predecessors, (8101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:44,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 8101 transitions. [2024-11-16 09:39:44,831 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 8101 transitions. Word has length 77 [2024-11-16 09:39:44,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:44,831 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 8101 transitions. [2024-11-16 09:39:44,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.393939393939394) internal successors, (211), 33 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:44,832 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 8101 transitions. [2024-11-16 09:39:44,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-16 09:39:44,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:44,833 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:44,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 09:39:45,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:45,034 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:45,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:45,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1510630993, now seen corresponding path program 1 times [2024-11-16 09:39:45,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:45,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932218310] [2024-11-16 09:39:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:45,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:45,387 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:45,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932218310] [2024-11-16 09:39:45,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932218310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:39:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034853202] [2024-11-16 09:39:45,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:45,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:45,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:39:45,389 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) [2024-11-16 09:39:45,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 09:39:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:45,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 09:39:45,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:39:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:45,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:39:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:46,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034853202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:39:46,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:39:46,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-16 09:39:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894627268] [2024-11-16 09:39:46,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:39:46,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 09:39:46,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:46,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 09:39:46,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2024-11-16 09:39:46,484 INFO L87 Difference]: Start difference. First operand 5876 states and 8101 transitions. Second operand has 26 states, 26 states have (on average 7.346153846153846) internal successors, (191), 25 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:39:47,889 INFO L93 Difference]: Finished difference Result 20833 states and 27649 transitions. [2024-11-16 09:39:47,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 09:39:47,890 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.346153846153846) internal successors, (191), 25 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-16 09:39:47,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:39:47,920 INFO L225 Difference]: With dead ends: 20833 [2024-11-16 09:39:47,920 INFO L226 Difference]: Without dead ends: 17261 [2024-11-16 09:39:47,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=629, Invalid=2341, Unknown=0, NotChecked=0, Total=2970 [2024-11-16 09:39:47,927 INFO L432 NwaCegarLoop]: 1521 mSDtfsCounter, 15598 mSDsluCounter, 6717 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15598 SdHoareTripleChecker+Valid, 8238 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:39:47,928 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15598 Valid, 8238 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 09:39:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17261 states. [2024-11-16 09:39:48,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17261 to 17023. [2024-11-16 09:39:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17023 states, 17021 states have (on average 1.3059749720932965) internal successors, (22229), 17022 states have internal predecessors, (22229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17023 states to 17023 states and 22229 transitions. [2024-11-16 09:39:48,386 INFO L78 Accepts]: Start accepts. Automaton has 17023 states and 22229 transitions. Word has length 77 [2024-11-16 09:39:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:39:48,386 INFO L471 AbstractCegarLoop]: Abstraction has 17023 states and 22229 transitions. [2024-11-16 09:39:48,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.346153846153846) internal successors, (191), 25 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:39:48,387 INFO L276 IsEmpty]: Start isEmpty. Operand 17023 states and 22229 transitions. [2024-11-16 09:39:48,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-16 09:39:48,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:39:48,389 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:39:48,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 09:39:48,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-16 09:39:48,590 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:39:48,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:39:48,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1994964022, now seen corresponding path program 1 times [2024-11-16 09:39:48,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:39:48,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904562504] [2024-11-16 09:39:48,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:48,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:39:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:51,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:39:51,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904562504] [2024-11-16 09:39:51,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904562504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:39:51,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097676043] [2024-11-16 09:39:51,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:39:51,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:39:51,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:39:51,050 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) [2024-11-16 09:39:51,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 09:39:51,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:39:51,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-16 09:39:51,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:39:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:55,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:39:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:39:59,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097676043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:39:59,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:39:59,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 20] total 62 [2024-11-16 09:39:59,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140582900] [2024-11-16 09:39:59,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:39:59,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-16 09:39:59,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:39:59,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-16 09:39:59,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=3457, Unknown=0, NotChecked=0, Total=3782 [2024-11-16 09:39:59,634 INFO L87 Difference]: Start difference. First operand 17023 states and 22229 transitions. Second operand has 62 states, 62 states have (on average 3.5) internal successors, (217), 62 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)