./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.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.3.1.ufo.UNBOUNDED.pals+Problem12_label01.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 3a476794b18ee3dc86c949acac0694757499ecd42c9edf7d0e83ac67cafd5af8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:32:55,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:32:55,581 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:32:55,588 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:32:55,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:32:55,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:32:55,615 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:32:55,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:32:55,616 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:32:55,617 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:32:55,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:32:55,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:32:55,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:32:55,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:32:55,623 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:32:55,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:32:55,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:32:55,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:32:55,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:32:55,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:32:55,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:32:55,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:32:55,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:32:55,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:32:55,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:32:55,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:32:55,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:32:55,627 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:32:55,627 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:32:55,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:32:55,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:32:55,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:32:55,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:32:55,628 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:32:55,628 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:32:55,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:32:55,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:32:55,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:32:55,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:32:55,632 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:32:55,632 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:32:55,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:32:55,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a476794b18ee3dc86c949acac0694757499ecd42c9edf7d0e83ac67cafd5af8 [2024-11-16 09:32:55,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:32:55,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:32:55,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:32:55,900 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:32:55,901 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:32:55,902 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-16 09:32:57,395 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:32:57,843 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:32:57,845 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-16 09:32:57,885 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fafab0c4a/ef913a42849a4e6abeed3d0360e912ff/FLAGde3337315 [2024-11-16 09:32:57,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fafab0c4a/ef913a42849a4e6abeed3d0360e912ff [2024-11-16 09:32:57,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:32:57,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:32:57,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:32:57,910 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:32:57,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:32:57,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:32:57" (1/1) ... [2024-11-16 09:32:57,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495767ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:57, skipping insertion in model container [2024-11-16 09:32:57,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:32:57" (1/1) ... [2024-11-16 09:32:58,028 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:32:58,371 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.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2024-11-16 09:32:58,459 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.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2024-11-16 09:32:59,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:32:59,101 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:32:59,133 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.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[6487,6500] [2024-11-16 09:32:59,140 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.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c[12042,12055] [2024-11-16 09:32:59,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:32:59,534 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:32:59,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59 WrapperNode [2024-11-16 09:32:59,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:32:59,536 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:32:59,536 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:32:59,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:32:59,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:32:59,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:32:59,944 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4982 [2024-11-16 09:32:59,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:32:59,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:32:59,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:32:59,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:32:59,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:32:59,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:33:00,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:33:00,209 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 09:33:00,209 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:33:00,209 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:33:00,315 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:33:00,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:33:00,392 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:33:00,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:33:00,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:33:00,451 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:33:00,452 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:33:00,452 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:33:00,453 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (1/1) ... [2024-11-16 09:33:00,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:33:00,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:00,490 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 09:33:00,496 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 09:33:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:33:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:33:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:33:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:33:00,710 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:33:00,712 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:33:04,773 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L1989: havoc calculate_output_#t~ret29#1; [2024-11-16 09:33:04,774 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3468: havoc calculate_output2_#t~ret30#1; [2024-11-16 09:33:04,775 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L4958: havoc calculate_output3_#t~ret31#1; [2024-11-16 09:33:04,977 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-16 09:33:04,977 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:33:05,025 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:33:05,026 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:33:05,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:05 BoogieIcfgContainer [2024-11-16 09:33:05,027 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:33:05,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:33:05,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:33:05,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:33:05,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:32:57" (1/3) ... [2024-11-16 09:33:05,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1f1374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:05, skipping insertion in model container [2024-11-16 09:33:05,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:32:59" (2/3) ... [2024-11-16 09:33:05,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a1f1374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:33:05, skipping insertion in model container [2024-11-16 09:33:05,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:33:05" (3/3) ... [2024-11-16 09:33:05,039 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label01.c [2024-11-16 09:33:05,059 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:33:05,059 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:33:05,162 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:33:05,170 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;@4a62a6f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:33:05,171 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:33:05,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 881 states, 878 states have (on average 1.898633257403189) internal successors, (1667), 880 states have internal predecessors, (1667), 0 states have call successors, (0), 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 09:33:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 09:33:05,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:05,192 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] [2024-11-16 09:33:05,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:05,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1430645132, now seen corresponding path program 1 times [2024-11-16 09:33:05,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:05,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032321033] [2024-11-16 09:33:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:05,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:05,452 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 09:33:05,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032321033] [2024-11-16 09:33:05,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032321033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:05,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:05,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 09:33:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251099275] [2024-11-16 09:33:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:05,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 09:33:05,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:05,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 09:33:05,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 09:33:05,491 INFO L87 Difference]: Start difference. First operand has 881 states, 878 states have (on average 1.898633257403189) internal successors, (1667), 880 states have internal predecessors, (1667), 0 states have call successors, (0), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 09:33:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:05,584 INFO L93 Difference]: Finished difference Result 1736 states and 3290 transitions. [2024-11-16 09:33:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 09:33:05,586 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 09:33:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:05,610 INFO L225 Difference]: With dead ends: 1736 [2024-11-16 09:33:05,611 INFO L226 Difference]: Without dead ends: 813 [2024-11-16 09:33:05,616 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 09:33:05,619 INFO L432 NwaCegarLoop]: 1596 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, 1596 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 09:33:05,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-16 09:33:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2024-11-16 09:33:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 811 states have (on average 1.8890258939580764) internal successors, (1532), 812 states have internal predecessors, (1532), 0 states have call successors, (0), 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 09:33:05,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1532 transitions. [2024-11-16 09:33:05,727 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1532 transitions. Word has length 22 [2024-11-16 09:33:05,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:05,728 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1532 transitions. [2024-11-16 09:33:05,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 09:33:05,729 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1532 transitions. [2024-11-16 09:33:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 09:33:05,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:05,732 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] [2024-11-16 09:33:05,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:33:05,732 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:05,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash 920110955, now seen corresponding path program 1 times [2024-11-16 09:33:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:05,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884795697] [2024-11-16 09:33:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:05,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:05,981 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 09:33:05,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:05,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884795697] [2024-11-16 09:33:05,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884795697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:05,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:05,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:05,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135270170] [2024-11-16 09:33:05,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:05,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:05,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:05,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:05,990 INFO L87 Difference]: Start difference. First operand 813 states and 1532 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 09:33:06,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:06,099 INFO L93 Difference]: Finished difference Result 852 states and 1589 transitions. [2024-11-16 09:33:06,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:06,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 09:33:06,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:06,104 INFO L225 Difference]: With dead ends: 852 [2024-11-16 09:33:06,104 INFO L226 Difference]: Without dead ends: 813 [2024-11-16 09:33:06,105 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 09:33:06,106 INFO L432 NwaCegarLoop]: 1530 mSDtfsCounter, 0 mSDsluCounter, 4569 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6099 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:06,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6099 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:33:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2024-11-16 09:33:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2024-11-16 09:33:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 811 states have (on average 1.8692971639950677) internal successors, (1516), 812 states have internal predecessors, (1516), 0 states have call successors, (0), 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 09:33:06,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1516 transitions. [2024-11-16 09:33:06,143 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1516 transitions. Word has length 22 [2024-11-16 09:33:06,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:06,143 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1516 transitions. [2024-11-16 09:33:06,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 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 09:33:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1516 transitions. [2024-11-16 09:33:06,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 09:33:06,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:06,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:06,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:33:06,149 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:06,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:06,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1481333562, now seen corresponding path program 1 times [2024-11-16 09:33:06,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:06,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489537226] [2024-11-16 09:33:06,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:06,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:06,295 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 09:33:06,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:06,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489537226] [2024-11-16 09:33:06,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489537226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:06,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:06,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:06,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789273870] [2024-11-16 09:33:06,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:06,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:06,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:06,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:06,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:06,298 INFO L87 Difference]: Start difference. First operand 813 states and 1516 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:06,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:06,431 INFO L93 Difference]: Finished difference Result 1023 states and 1834 transitions. [2024-11-16 09:33:06,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:33:06,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-16 09:33:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:06,436 INFO L225 Difference]: With dead ends: 1023 [2024-11-16 09:33:06,436 INFO L226 Difference]: Without dead ends: 988 [2024-11-16 09:33:06,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:06,438 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 4668 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4668 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:06,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4668 Valid, 1812 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 09:33:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2024-11-16 09:33:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 845. [2024-11-16 09:33:06,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.856465005931198) internal successors, (1565), 844 states have internal predecessors, (1565), 0 states have call successors, (0), 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 09:33:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1565 transitions. [2024-11-16 09:33:06,503 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1565 transitions. Word has length 37 [2024-11-16 09:33:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:06,503 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1565 transitions. [2024-11-16 09:33:06,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:06,504 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1565 transitions. [2024-11-16 09:33:06,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-16 09:33:06,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:06,507 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] [2024-11-16 09:33:06,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:33:06,507 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:06,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:06,508 INFO L85 PathProgramCache]: Analyzing trace with hash 361982440, now seen corresponding path program 1 times [2024-11-16 09:33:06,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:06,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959465509] [2024-11-16 09:33:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:06,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:06,711 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 09:33:06,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:06,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959465509] [2024-11-16 09:33:06,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959465509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:06,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:06,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:06,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767192893] [2024-11-16 09:33:06,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:06,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:06,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:06,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:06,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:06,713 INFO L87 Difference]: Start difference. First operand 845 states and 1565 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:06,795 INFO L93 Difference]: Finished difference Result 915 states and 1669 transitions. [2024-11-16 09:33:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:06,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-16 09:33:06,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:06,799 INFO L225 Difference]: With dead ends: 915 [2024-11-16 09:33:06,800 INFO L226 Difference]: Without dead ends: 848 [2024-11-16 09:33:06,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:33:06,803 INFO L432 NwaCegarLoop]: 1511 mSDtfsCounter, 4438 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 1609 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:06,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 1609 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:06,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-16 09:33:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 845. [2024-11-16 09:33:06,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 843 states have (on average 1.8552787663107948) internal successors, (1564), 844 states have internal predecessors, (1564), 0 states have call successors, (0), 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 09:33:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1564 transitions. [2024-11-16 09:33:06,823 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1564 transitions. Word has length 39 [2024-11-16 09:33:06,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:06,824 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 1564 transitions. [2024-11-16 09:33:06,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1564 transitions. [2024-11-16 09:33:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 09:33:06,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:06,825 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] [2024-11-16 09:33:06,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:33:06,825 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:06,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:06,825 INFO L85 PathProgramCache]: Analyzing trace with hash 60372957, now seen corresponding path program 1 times [2024-11-16 09:33:06,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:06,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426870701] [2024-11-16 09:33:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:06,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:06,905 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 09:33:06,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:06,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426870701] [2024-11-16 09:33:06,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426870701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:06,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:06,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:06,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738834461] [2024-11-16 09:33:06,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:06,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:06,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:06,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:06,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:06,908 INFO L87 Difference]: Start difference. First operand 845 states and 1564 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:06,943 INFO L93 Difference]: Finished difference Result 967 states and 1746 transitions. [2024-11-16 09:33:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-16 09:33:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:06,947 INFO L225 Difference]: With dead ends: 967 [2024-11-16 09:33:06,947 INFO L226 Difference]: Without dead ends: 900 [2024-11-16 09:33:06,948 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 09:33:06,949 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 1472 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:06,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1558 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:06,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2024-11-16 09:33:06,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 895. [2024-11-16 09:33:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 893 states have (on average 1.832026875699888) internal successors, (1636), 894 states have internal predecessors, (1636), 0 states have call successors, (0), 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 09:33:06,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1636 transitions. [2024-11-16 09:33:06,968 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1636 transitions. Word has length 40 [2024-11-16 09:33:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:06,968 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1636 transitions. [2024-11-16 09:33:06,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1636 transitions. [2024-11-16 09:33:06,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:06,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:06,969 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] [2024-11-16 09:33:06,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:33:06,970 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:06,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1296615530, now seen corresponding path program 1 times [2024-11-16 09:33:06,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:06,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393429340] [2024-11-16 09:33:06,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:06,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:07,017 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 09:33:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:07,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393429340] [2024-11-16 09:33:07,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393429340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:07,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:07,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:07,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335362541] [2024-11-16 09:33:07,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:07,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:07,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:07,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:07,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:07,020 INFO L87 Difference]: Start difference. First operand 895 states and 1636 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:07,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:07,045 INFO L93 Difference]: Finished difference Result 1113 states and 1954 transitions. [2024-11-16 09:33:07,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:07,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:07,050 INFO L225 Difference]: With dead ends: 1113 [2024-11-16 09:33:07,050 INFO L226 Difference]: Without dead ends: 996 [2024-11-16 09:33:07,050 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 09:33:07,051 INFO L432 NwaCegarLoop]: 1545 mSDtfsCounter, 1481 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 1603 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 09:33:07,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 1603 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:07,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2024-11-16 09:33:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 993. [2024-11-16 09:33:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 991 states have (on average 1.7911200807265388) internal successors, (1775), 992 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 09:33:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1775 transitions. [2024-11-16 09:33:07,073 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1775 transitions. Word has length 41 [2024-11-16 09:33:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:07,073 INFO L471 AbstractCegarLoop]: Abstraction has 993 states and 1775 transitions. [2024-11-16 09:33:07,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1775 transitions. [2024-11-16 09:33:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:07,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:07,074 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] [2024-11-16 09:33:07,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:33:07,075 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:07,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash -906749014, now seen corresponding path program 1 times [2024-11-16 09:33:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:07,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983473460] [2024-11-16 09:33:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:07,114 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 09:33:07,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:07,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983473460] [2024-11-16 09:33:07,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983473460] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:07,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:07,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:07,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484372198] [2024-11-16 09:33:07,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:07,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:07,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:07,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:07,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:07,117 INFO L87 Difference]: Start difference. First operand 993 states and 1775 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:07,146 INFO L93 Difference]: Finished difference Result 1391 states and 2343 transitions. [2024-11-16 09:33:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:07,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:07,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:07,151 INFO L225 Difference]: With dead ends: 1391 [2024-11-16 09:33:07,151 INFO L226 Difference]: Without dead ends: 1176 [2024-11-16 09:33:07,152 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 09:33:07,153 INFO L432 NwaCegarLoop]: 1543 mSDtfsCounter, 1479 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 1605 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 09:33:07,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 1605 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2024-11-16 09:33:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1173. [2024-11-16 09:33:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1173 states, 1171 states have (on average 1.725875320239112) internal successors, (2021), 1172 states have internal predecessors, (2021), 0 states have call successors, (0), 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 09:33:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 2021 transitions. [2024-11-16 09:33:07,181 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 2021 transitions. Word has length 41 [2024-11-16 09:33:07,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:07,182 INFO L471 AbstractCegarLoop]: Abstraction has 1173 states and 2021 transitions. [2024-11-16 09:33:07,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:07,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 2021 transitions. [2024-11-16 09:33:07,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-16 09:33:07,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:07,183 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] [2024-11-16 09:33:07,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:33:07,183 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:07,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1431026069, now seen corresponding path program 1 times [2024-11-16 09:33:07,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:07,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918029943] [2024-11-16 09:33:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:07,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:07,400 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 09:33:07,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:07,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918029943] [2024-11-16 09:33:07,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918029943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:07,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:07,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:33:07,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690171688] [2024-11-16 09:33:07,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:07,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:33:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:07,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:33:07,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:07,402 INFO L87 Difference]: Start difference. First operand 1173 states and 2021 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:07,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:07,476 INFO L93 Difference]: Finished difference Result 1200 states and 2055 transitions. [2024-11-16 09:33:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 09:33:07,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-16 09:33:07,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:07,482 INFO L225 Difference]: With dead ends: 1200 [2024-11-16 09:33:07,483 INFO L226 Difference]: Without dead ends: 1197 [2024-11-16 09:33:07,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:33:07,485 INFO L432 NwaCegarLoop]: 1510 mSDtfsCounter, 0 mSDsluCounter, 9047 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10557 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:07,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10557 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2024-11-16 09:33:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2024-11-16 09:33:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1195 states have (on average 1.707949790794979) internal successors, (2041), 1196 states have internal predecessors, (2041), 0 states have call successors, (0), 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 09:33:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 2041 transitions. [2024-11-16 09:33:07,511 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 2041 transitions. Word has length 41 [2024-11-16 09:33:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:07,512 INFO L471 AbstractCegarLoop]: Abstraction has 1197 states and 2041 transitions. [2024-11-16 09:33:07,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 2041 transitions. [2024-11-16 09:33:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 09:33:07,513 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:07,513 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] [2024-11-16 09:33:07,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:33:07,513 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:07,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:07,513 INFO L85 PathProgramCache]: Analyzing trace with hash 422057994, now seen corresponding path program 1 times [2024-11-16 09:33:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078147733] [2024-11-16 09:33:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:07,553 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 09:33:07,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:07,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078147733] [2024-11-16 09:33:07,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078147733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:07,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:07,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:07,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802278720] [2024-11-16 09:33:07,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:07,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:07,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:07,556 INFO L87 Difference]: Start difference. First operand 1197 states and 2041 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:07,583 INFO L93 Difference]: Finished difference Result 1655 states and 2682 transitions. [2024-11-16 09:33:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:07,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-16 09:33:07,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:07,589 INFO L225 Difference]: With dead ends: 1655 [2024-11-16 09:33:07,589 INFO L226 Difference]: Without dead ends: 1403 [2024-11-16 09:33:07,590 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 09:33:07,591 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 1480 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1604 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 09:33:07,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1604 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:07,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2024-11-16 09:33:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1400. [2024-11-16 09:33:07,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1398 states have (on average 1.65379113018598) internal successors, (2312), 1399 states have internal predecessors, (2312), 0 states have call successors, (0), 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 09:33:07,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2312 transitions. [2024-11-16 09:33:07,622 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2312 transitions. Word has length 43 [2024-11-16 09:33:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:07,622 INFO L471 AbstractCegarLoop]: Abstraction has 1400 states and 2312 transitions. [2024-11-16 09:33:07,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:07,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2312 transitions. [2024-11-16 09:33:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 09:33:07,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:07,623 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 09:33:07,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:33:07,623 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:07,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:07,623 INFO L85 PathProgramCache]: Analyzing trace with hash 658466105, now seen corresponding path program 1 times [2024-11-16 09:33:07,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:07,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438620136] [2024-11-16 09:33:07,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:07,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:07,740 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 09:33:07,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:07,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438620136] [2024-11-16 09:33:07,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438620136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:07,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:07,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:07,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603238124] [2024-11-16 09:33:07,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:07,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 09:33:07,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:07,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 09:33:07,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 09:33:07,745 INFO L87 Difference]: Start difference. First operand 1400 states and 2312 transitions. Second operand has 4 states, 4 states have (on average 12.5) 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 09:33:13,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:13,122 INFO L93 Difference]: Finished difference Result 3659 states and 6625 transitions. [2024-11-16 09:33:13,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 09:33:13,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) 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 09:33:13,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:13,132 INFO L225 Difference]: With dead ends: 3659 [2024-11-16 09:33:13,132 INFO L226 Difference]: Without dead ends: 2904 [2024-11-16 09:33:13,133 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 09:33:13,134 INFO L432 NwaCegarLoop]: 752 mSDtfsCounter, 2369 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2369 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:13,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2369 Valid, 775 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-16 09:33:13,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2024-11-16 09:33:13,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2904. [2024-11-16 09:33:13,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2902 states have (on average 1.5258442453480359) internal successors, (4428), 2903 states have internal predecessors, (4428), 0 states have call successors, (0), 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 09:33:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4428 transitions. [2024-11-16 09:33:13,191 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 4428 transitions. Word has length 50 [2024-11-16 09:33:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:13,191 INFO L471 AbstractCegarLoop]: Abstraction has 2904 states and 4428 transitions. [2024-11-16 09:33:13,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) 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 09:33:13,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 4428 transitions. [2024-11-16 09:33:13,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:13,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:13,193 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] [2024-11-16 09:33:13,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:33:13,193 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:13,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1397666540, now seen corresponding path program 1 times [2024-11-16 09:33:13,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:13,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681232244] [2024-11-16 09:33:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:13,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:13,310 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:33:13,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681232244] [2024-11-16 09:33:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681232244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:13,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:13,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49901389] [2024-11-16 09:33:13,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:13,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:13,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:13,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:13,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:13,311 INFO L87 Difference]: Start difference. First operand 2904 states and 4428 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:13,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:13,413 INFO L93 Difference]: Finished difference Result 4908 states and 7156 transitions. [2024-11-16 09:33:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:13,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 09:33:13,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:13,428 INFO L225 Difference]: With dead ends: 4908 [2024-11-16 09:33:13,428 INFO L226 Difference]: Without dead ends: 4289 [2024-11-16 09:33:13,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:13,432 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 3068 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3068 SdHoareTripleChecker+Valid, 3178 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:13,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3068 Valid, 3178 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4289 states. [2024-11-16 09:33:13,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4289 to 3520. [2024-11-16 09:33:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3520 states, 3518 states have (on average 1.495167708925526) internal successors, (5260), 3519 states have internal predecessors, (5260), 0 states have call successors, (0), 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 09:33:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 5260 transitions. [2024-11-16 09:33:13,513 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 5260 transitions. Word has length 58 [2024-11-16 09:33:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:13,514 INFO L471 AbstractCegarLoop]: Abstraction has 3520 states and 5260 transitions. [2024-11-16 09:33:13,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 5260 transitions. [2024-11-16 09:33:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-16 09:33:13,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:13,515 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] [2024-11-16 09:33:13,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:33:13,515 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:13,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash -805698004, now seen corresponding path program 1 times [2024-11-16 09:33:13,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:13,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276427403] [2024-11-16 09:33:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:13,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 09:33:13,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:13,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276427403] [2024-11-16 09:33:13,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276427403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:13,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:13,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:13,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565118182] [2024-11-16 09:33:13,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:13,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:13,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:13,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:13,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:13,616 INFO L87 Difference]: Start difference. First operand 3520 states and 5260 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:13,726 INFO L93 Difference]: Finished difference Result 5524 states and 7988 transitions. [2024-11-16 09:33:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:13,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-16 09:33:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:13,742 INFO L225 Difference]: With dead ends: 5524 [2024-11-16 09:33:13,742 INFO L226 Difference]: Without dead ends: 4905 [2024-11-16 09:33:13,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:13,745 INFO L432 NwaCegarLoop]: 1560 mSDtfsCounter, 3073 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3073 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:13,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3073 Valid, 3167 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:13,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2024-11-16 09:33:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 4448. [2024-11-16 09:33:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 4446 states have (on average 1.4619883040935673) internal successors, (6500), 4447 states have internal predecessors, (6500), 0 states have call successors, (0), 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 09:33:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 6500 transitions. [2024-11-16 09:33:13,925 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 6500 transitions. Word has length 58 [2024-11-16 09:33:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:13,925 INFO L471 AbstractCegarLoop]: Abstraction has 4448 states and 6500 transitions. [2024-11-16 09:33:13,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 6500 transitions. [2024-11-16 09:33:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:13,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:13,927 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] [2024-11-16 09:33:13,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 09:33:13,928 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:13,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:13,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1122141838, now seen corresponding path program 1 times [2024-11-16 09:33:13,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717610238] [2024-11-16 09:33:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:13,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:14,042 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 09:33:14,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:14,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717610238] [2024-11-16 09:33:14,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717610238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:14,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:14,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:14,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742605662] [2024-11-16 09:33:14,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:14,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:14,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:14,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:14,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:14,044 INFO L87 Difference]: Start difference. First operand 4448 states and 6500 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:14,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:14,117 INFO L93 Difference]: Finished difference Result 6040 states and 8679 transitions. [2024-11-16 09:33:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:14,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 09:33:14,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:14,138 INFO L225 Difference]: With dead ends: 6040 [2024-11-16 09:33:14,139 INFO L226 Difference]: Without dead ends: 3877 [2024-11-16 09:33:14,143 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 09:33:14,144 INFO L432 NwaCegarLoop]: 1542 mSDtfsCounter, 35 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3043 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 09:33:14,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3877 states. [2024-11-16 09:33:14,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3877 to 3874. [2024-11-16 09:33:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 3872 states have (on average 1.4798553719008265) internal successors, (5730), 3873 states have internal predecessors, (5730), 0 states have call successors, (0), 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 09:33:14,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 5730 transitions. [2024-11-16 09:33:14,267 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 5730 transitions. Word has length 60 [2024-11-16 09:33:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:14,268 INFO L471 AbstractCegarLoop]: Abstraction has 3874 states and 5730 transitions. [2024-11-16 09:33:14,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 5730 transitions. [2024-11-16 09:33:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-16 09:33:14,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:14,269 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] [2024-11-16 09:33:14,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:33:14,270 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:14,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:14,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1252169204, now seen corresponding path program 1 times [2024-11-16 09:33:14,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:14,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109981289] [2024-11-16 09:33:14,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:14,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:14,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:14,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109981289] [2024-11-16 09:33:14,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109981289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:14,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:14,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 09:33:14,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131123484] [2024-11-16 09:33:14,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:14,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 09:33:14,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:14,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 09:33:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 09:33:14,401 INFO L87 Difference]: Start difference. First operand 3874 states and 5730 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:14,541 INFO L93 Difference]: Finished difference Result 5230 states and 7586 transitions. [2024-11-16 09:33:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 09:33:14,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-16 09:33:14,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:14,560 INFO L225 Difference]: With dead ends: 5230 [2024-11-16 09:33:14,560 INFO L226 Difference]: Without dead ends: 4779 [2024-11-16 09:33:14,563 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:33:14,564 INFO L432 NwaCegarLoop]: 1556 mSDtfsCounter, 3065 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 3204 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:14,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3065 Valid, 3204 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:14,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2024-11-16 09:33:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4322. [2024-11-16 09:33:14,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4322 states, 4320 states have (on average 1.4671296296296297) internal successors, (6338), 4321 states have internal predecessors, (6338), 0 states have call successors, (0), 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 09:33:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4322 states to 4322 states and 6338 transitions. [2024-11-16 09:33:14,701 INFO L78 Accepts]: Start accepts. Automaton has 4322 states and 6338 transitions. Word has length 60 [2024-11-16 09:33:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:14,702 INFO L471 AbstractCegarLoop]: Abstraction has 4322 states and 6338 transitions. [2024-11-16 09:33:14,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4322 states and 6338 transitions. [2024-11-16 09:33:14,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 09:33:14,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:14,704 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] [2024-11-16 09:33:14,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:33:14,704 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:14,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:14,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1545598382, now seen corresponding path program 1 times [2024-11-16 09:33:14,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:14,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655111149] [2024-11-16 09:33:14,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:14,800 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 09:33:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655111149] [2024-11-16 09:33:14,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655111149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:14,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:14,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196142679] [2024-11-16 09:33:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:14,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:14,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:14,803 INFO L87 Difference]: Start difference. First operand 4322 states and 6338 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:14,847 INFO L93 Difference]: Finished difference Result 5336 states and 7710 transitions. [2024-11-16 09:33:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:14,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-16 09:33:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:14,854 INFO L225 Difference]: With dead ends: 5336 [2024-11-16 09:33:14,854 INFO L226 Difference]: Without dead ends: 3317 [2024-11-16 09:33:14,856 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 09:33:14,857 INFO L432 NwaCegarLoop]: 1535 mSDtfsCounter, 28 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3028 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 09:33:14,857 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2024-11-16 09:33:14,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 3314. [2024-11-16 09:33:14,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3314 states, 3312 states have (on average 1.4951690821256038) internal successors, (4952), 3313 states have internal predecessors, (4952), 0 states have call successors, (0), 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 09:33:14,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3314 states to 3314 states and 4952 transitions. [2024-11-16 09:33:14,905 INFO L78 Accepts]: Start accepts. Automaton has 3314 states and 4952 transitions. Word has length 62 [2024-11-16 09:33:14,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:14,906 INFO L471 AbstractCegarLoop]: Abstraction has 3314 states and 4952 transitions. [2024-11-16 09:33:14,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:14,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3314 states and 4952 transitions. [2024-11-16 09:33:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 09:33:14,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:14,907 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] [2024-11-16 09:33:14,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:33:14,907 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:14,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 585202352, now seen corresponding path program 1 times [2024-11-16 09:33:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:14,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129985734] [2024-11-16 09:33:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:14,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:14,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:14,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129985734] [2024-11-16 09:33:14,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129985734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:33:14,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:33:14,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 09:33:14,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015415340] [2024-11-16 09:33:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:33:14,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 09:33:14,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:14,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 09:33:14,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 09:33:14,990 INFO L87 Difference]: Start difference. First operand 3314 states and 4952 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:15,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:15,018 INFO L93 Difference]: Finished difference Result 3824 states and 5631 transitions. [2024-11-16 09:33:15,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 09:33:15,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-16 09:33:15,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:15,023 INFO L225 Difference]: With dead ends: 3824 [2024-11-16 09:33:15,023 INFO L226 Difference]: Without dead ends: 2813 [2024-11-16 09:33:15,024 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 09:33:15,025 INFO L432 NwaCegarLoop]: 1528 mSDtfsCounter, 23 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3013 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 09:33:15,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3013 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 09:33:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2024-11-16 09:33:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2810. [2024-11-16 09:33:15,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 2808 states have (on average 1.51994301994302) internal successors, (4268), 2809 states have internal predecessors, (4268), 0 states have call successors, (0), 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 09:33:15,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 4268 transitions. [2024-11-16 09:33:15,061 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 4268 transitions. Word has length 64 [2024-11-16 09:33:15,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:15,062 INFO L471 AbstractCegarLoop]: Abstraction has 2810 states and 4268 transitions. [2024-11-16 09:33:15,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:15,062 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 4268 transitions. [2024-11-16 09:33:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 09:33:15,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:15,063 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:15,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 09:33:15,063 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:15,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:15,064 INFO L85 PathProgramCache]: Analyzing trace with hash 65408791, now seen corresponding path program 1 times [2024-11-16 09:33:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:15,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877059293] [2024-11-16 09:33:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:15,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877059293] [2024-11-16 09:33:15,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877059293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:15,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708770657] [2024-11-16 09:33:15,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:15,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:15,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:15,471 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 09:33:15,472 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 09:33:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:15,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 09:33:15,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:16,073 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:16,073 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:16,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:16,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708770657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:16,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:16,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-16 09:33:16,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805706432] [2024-11-16 09:33:16,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:16,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 09:33:16,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:16,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 09:33:16,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-16 09:33:16,760 INFO L87 Difference]: Start difference. First operand 2810 states and 4268 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:17,235 INFO L93 Difference]: Finished difference Result 3881 states and 5687 transitions. [2024-11-16 09:33:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 09:33:17,235 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 09:33:17,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:17,242 INFO L225 Difference]: With dead ends: 3881 [2024-11-16 09:33:17,242 INFO L226 Difference]: Without dead ends: 3374 [2024-11-16 09:33:17,245 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2024-11-16 09:33:17,245 INFO L432 NwaCegarLoop]: 1497 mSDtfsCounter, 16773 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16773 SdHoareTripleChecker+Valid, 6213 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:17,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16773 Valid, 6213 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 09:33:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2024-11-16 09:33:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3350. [2024-11-16 09:33:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3348 states have (on average 1.4817801672640383) internal successors, (4961), 3349 states have internal predecessors, (4961), 0 states have call successors, (0), 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 09:33:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 4961 transitions. [2024-11-16 09:33:17,304 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 4961 transitions. Word has length 66 [2024-11-16 09:33:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:17,305 INFO L471 AbstractCegarLoop]: Abstraction has 3350 states and 4961 transitions. [2024-11-16 09:33:17,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 4961 transitions. [2024-11-16 09:33:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-16 09:33:17,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:17,306 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:17,325 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 09:33:17,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 09:33:17,507 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:17,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:17,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2079770871, now seen corresponding path program 1 times [2024-11-16 09:33:17,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:17,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864399414] [2024-11-16 09:33:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:17,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:17,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864399414] [2024-11-16 09:33:17,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864399414] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:17,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299983899] [2024-11-16 09:33:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:17,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:17,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:17,818 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 09:33:17,820 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 09:33:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:17,949 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 09:33:17,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:22,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:24,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299983899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:24,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:24,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 17, 20] total 44 [2024-11-16 09:33:24,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768855574] [2024-11-16 09:33:24,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:24,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 09:33:24,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 09:33:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1564, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 09:33:24,724 INFO L87 Difference]: Start difference. First operand 3350 states and 4961 transitions. Second operand has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:32,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:32,698 INFO L93 Difference]: Finished difference Result 10001 states and 13581 transitions. [2024-11-16 09:33:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-16 09:33:32,698 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-16 09:33:32,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:32,714 INFO L225 Difference]: With dead ends: 10001 [2024-11-16 09:33:32,714 INFO L226 Difference]: Without dead ends: 8954 [2024-11-16 09:33:32,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4699 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=3071, Invalid=11691, Unknown=0, NotChecked=0, Total=14762 [2024-11-16 09:33:32,721 INFO L432 NwaCegarLoop]: 1518 mSDtfsCounter, 21163 mSDsluCounter, 20472 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21163 SdHoareTripleChecker+Valid, 21990 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:32,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21163 Valid, 21990 Invalid, 1647 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 09:33:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8954 states. [2024-11-16 09:33:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8954 to 5690. [2024-11-16 09:33:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5688 states have (on average 1.4006680731364276) internal successors, (7967), 5689 states have internal predecessors, (7967), 0 states have call successors, (0), 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 09:33:32,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 7967 transitions. [2024-11-16 09:33:32,878 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 7967 transitions. Word has length 66 [2024-11-16 09:33:32,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:32,878 INFO L471 AbstractCegarLoop]: Abstraction has 5690 states and 7967 transitions. [2024-11-16 09:33:32,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 4.0) internal successors, (176), 44 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 09:33:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 7967 transitions. [2024-11-16 09:33:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 09:33:32,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:32,880 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:33:32,903 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 09:33:33,084 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,SelfDestructingSolverStorable17 [2024-11-16 09:33:33,085 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:33,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:33,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1699220583, now seen corresponding path program 1 times [2024-11-16 09:33:33,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:33,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488680000] [2024-11-16 09:33:33,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:33,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:34,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488680000] [2024-11-16 09:33:34,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488680000] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844189220] [2024-11-16 09:33:34,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:34,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:34,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:34,742 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 09:33:34,744 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 09:33:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:34,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 09:33:34,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:36,852 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:38,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844189220] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:38,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:38,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 21] total 57 [2024-11-16 09:33:38,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587434227] [2024-11-16 09:33:38,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:38,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-16 09:33:38,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-16 09:33:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2885, Unknown=0, NotChecked=0, Total=3192 [2024-11-16 09:33:38,250 INFO L87 Difference]: Start difference. First operand 5690 states and 7967 transitions. Second operand has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 57 states have internal predecessors, (180), 0 states have call successors, (0), 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 09:33:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:50,616 INFO L93 Difference]: Finished difference Result 12737 states and 16982 transitions. [2024-11-16 09:33:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-16 09:33:50,617 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 57 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-16 09:33:50,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:50,639 INFO L225 Difference]: With dead ends: 12737 [2024-11-16 09:33:50,639 INFO L226 Difference]: Without dead ends: 10934 [2024-11-16 09:33:50,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6579 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=4780, Invalid=19400, Unknown=0, NotChecked=0, Total=24180 [2024-11-16 09:33:50,656 INFO L432 NwaCegarLoop]: 1555 mSDtfsCounter, 30347 mSDsluCounter, 28037 mSDsCounter, 0 mSdLazyCounter, 3122 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30347 SdHoareTripleChecker+Valid, 29592 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:50,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30347 Valid, 29592 Invalid, 3239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 3122 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 09:33:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10934 states. [2024-11-16 09:33:50,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10934 to 5474. [2024-11-16 09:33:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5474 states, 5472 states have (on average 1.403143274853801) internal successors, (7678), 5473 states have internal predecessors, (7678), 0 states have call successors, (0), 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 09:33:50,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5474 states to 5474 states and 7678 transitions. [2024-11-16 09:33:50,896 INFO L78 Accepts]: Start accepts. Automaton has 5474 states and 7678 transitions. Word has length 67 [2024-11-16 09:33:50,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:50,896 INFO L471 AbstractCegarLoop]: Abstraction has 5474 states and 7678 transitions. [2024-11-16 09:33:50,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 57 states have internal predecessors, (180), 0 states have call successors, (0), 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 09:33:50,897 INFO L276 IsEmpty]: Start isEmpty. Operand 5474 states and 7678 transitions. [2024-11-16 09:33:50,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 09:33:50,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:50,898 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] [2024-11-16 09:33:50,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 09:33:51,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:51,103 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:51,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2033078427, now seen corresponding path program 1 times [2024-11-16 09:33:51,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:51,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788535330] [2024-11-16 09:33:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:51,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:33:51,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:51,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788535330] [2024-11-16 09:33:51,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788535330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:51,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205900797] [2024-11-16 09:33:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:51,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:51,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:51,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:33:51,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 09:33:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:51,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 09:33:51,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:51,788 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 09:33:51,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205900797] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:51,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:51,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2024-11-16 09:33:51,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127596212] [2024-11-16 09:33:51,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:51,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-16 09:33:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:51,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-16 09:33:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-16 09:33:51,926 INFO L87 Difference]: Start difference. First operand 5474 states and 7678 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 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 09:33:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:33:53,065 INFO L93 Difference]: Finished difference Result 12756 states and 16852 transitions. [2024-11-16 09:33:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-16 09:33:53,066 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-16 09:33:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:33:53,075 INFO L225 Difference]: With dead ends: 12756 [2024-11-16 09:33:53,075 INFO L226 Difference]: Without dead ends: 9585 [2024-11-16 09:33:53,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=371, Invalid=1269, Unknown=0, NotChecked=0, Total=1640 [2024-11-16 09:33:53,081 INFO L432 NwaCegarLoop]: 1519 mSDtfsCounter, 13919 mSDsluCounter, 6300 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13919 SdHoareTripleChecker+Valid, 7819 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:33:53,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13919 Valid, 7819 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 09:33:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9585 states. [2024-11-16 09:33:53,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9585 to 9492. [2024-11-16 09:33:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9492 states, 9490 states have (on average 1.2998946259220232) internal successors, (12336), 9491 states have internal predecessors, (12336), 0 states have call successors, (0), 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 09:33:53,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9492 states to 9492 states and 12336 transitions. [2024-11-16 09:33:53,528 INFO L78 Accepts]: Start accepts. Automaton has 9492 states and 12336 transitions. Word has length 68 [2024-11-16 09:33:53,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:33:53,528 INFO L471 AbstractCegarLoop]: Abstraction has 9492 states and 12336 transitions. [2024-11-16 09:33:53,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.3125) internal successors, (181), 16 states have internal predecessors, (181), 0 states have call successors, (0), 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 09:33:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 9492 states and 12336 transitions. [2024-11-16 09:33:53,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:33:53,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:33:53,529 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] [2024-11-16 09:33:53,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 09:33:53,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:53,730 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:33:53,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:33:53,730 INFO L85 PathProgramCache]: Analyzing trace with hash -731290903, now seen corresponding path program 1 times [2024-11-16 09:33:53,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:33:53,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137511045] [2024-11-16 09:33:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:53,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:33:53,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:55,065 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 09:33:55,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:33:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137511045] [2024-11-16 09:33:55,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137511045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:33:55,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715840302] [2024-11-16 09:33:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:33:55,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:33:55,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:33:55,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:33:55,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 09:33:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:33:55,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 09:33:55,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:33:56,810 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 09:33:56,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:33:59,167 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 09:33:59,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715840302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:33:59,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:33:59,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 18] total 52 [2024-11-16 09:33:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409249774] [2024-11-16 09:33:59,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:33:59,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-16 09:33:59,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:33:59,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-16 09:33:59,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=2418, Unknown=0, NotChecked=0, Total=2652 [2024-11-16 09:33:59,170 INFO L87 Difference]: Start difference. First operand 9492 states and 12336 transitions. Second operand has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 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 09:34:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:34:06,581 INFO L93 Difference]: Finished difference Result 15401 states and 19535 transitions. [2024-11-16 09:34:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-16 09:34:06,581 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 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 09:34:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:34:06,589 INFO L225 Difference]: With dead ends: 15401 [2024-11-16 09:34:06,589 INFO L226 Difference]: Without dead ends: 11296 [2024-11-16 09:34:06,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2590 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=1848, Invalid=9072, Unknown=0, NotChecked=0, Total=10920 [2024-11-16 09:34:06,594 INFO L432 NwaCegarLoop]: 1505 mSDtfsCounter, 24891 mSDsluCounter, 29485 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24891 SdHoareTripleChecker+Valid, 30990 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:34:06,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24891 Valid, 30990 Invalid, 2433 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 09:34:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11296 states. [2024-11-16 09:34:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11296 to 8074. [2024-11-16 09:34:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8074 states, 8072 states have (on average 1.3204905847373638) internal successors, (10659), 8073 states have internal predecessors, (10659), 0 states have call successors, (0), 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 09:34:06,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 10659 transitions. [2024-11-16 09:34:06,966 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 10659 transitions. Word has length 69 [2024-11-16 09:34:06,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:34:06,966 INFO L471 AbstractCegarLoop]: Abstraction has 8074 states and 10659 transitions. [2024-11-16 09:34:06,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.423076923076923) internal successors, (178), 52 states have internal predecessors, (178), 0 states have call successors, (0), 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 09:34:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 10659 transitions. [2024-11-16 09:34:06,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-16 09:34:06,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:34:06,971 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:34:06,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 09:34:07,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:07,172 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:34:07,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:34:07,173 INFO L85 PathProgramCache]: Analyzing trace with hash 621848533, now seen corresponding path program 1 times [2024-11-16 09:34:07,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:34:07,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327194914] [2024-11-16 09:34:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:07,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:34:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:07,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:34:07,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327194914] [2024-11-16 09:34:07,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327194914] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:34:07,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981165301] [2024-11-16 09:34:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:34:07,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:34:07,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:34:07,975 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:34:07,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 09:34:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:34:08,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 09:34:08,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:34:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:09,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:34:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:34:11,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981165301] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:34:11,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:34:11,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 17] total 47 [2024-11-16 09:34:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719411344] [2024-11-16 09:34:11,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:34:11,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-16 09:34:11,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:34:11,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-16 09:34:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1971, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 09:34:11,842 INFO L87 Difference]: Start difference. First operand 8074 states and 10659 transitions. Second operand has 47 states, 47 states have (on average 6.48936170212766) internal successors, (305), 47 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)