./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label19.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/eca-rers2012/Problem12_label19.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 8fb9a44013f129b42a7ee402f5ad064de240b9b8bfc3efdb0ecb991ba7dde0d1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:25:59,469 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:25:59,542 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:25:59,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:25:59,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:25:59,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:25:59,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:25:59,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:25:59,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:25:59,593 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:25:59,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:25:59,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:25:59,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:25:59,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:25:59,596 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:25:59,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:25:59,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:25:59,597 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:25:59,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:25:59,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:25:59,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:25:59,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:25:59,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:25:59,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:25:59,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:25:59,600 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:25:59,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:25:59,611 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:25:59,611 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:25:59,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:25:59,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:25:59,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:25:59,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:25:59,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:25:59,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:25:59,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:25:59,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:25:59,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:25:59,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:25:59,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:25:59,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:25:59,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:25:59,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fb9a44013f129b42a7ee402f5ad064de240b9b8bfc3efdb0ecb991ba7dde0d1 [2024-11-09 19:25:59,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:25:59,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:25:59,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:25:59,901 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:25:59,901 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:25:59,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label19.c [2024-11-09 19:26:01,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:26:01,854 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:26:01,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label19.c [2024-11-09 19:26:01,887 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4811b6fda/8e72897660644355917f6e5ea778cb42/FLAG358da41ed [2024-11-09 19:26:01,906 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4811b6fda/8e72897660644355917f6e5ea778cb42 [2024-11-09 19:26:01,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:26:01,911 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:26:01,912 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:26:01,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:26:01,918 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:26:01,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:26:01" (1/1) ... [2024-11-09 19:26:01,920 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34090724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:01, skipping insertion in model container [2024-11-09 19:26:01,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:26:01" (1/1) ... [2024-11-09 19:26:02,019 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:26:02,283 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/eca-rers2012/Problem12_label19.c[2130,2143] [2024-11-09 19:26:03,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:26:03,130 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:26:03,149 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/eca-rers2012/Problem12_label19.c[2130,2143] [2024-11-09 19:26:03,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:26:03,620 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:26:03,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03 WrapperNode [2024-11-09 19:26:03,621 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:26:03,622 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:26:03,623 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:26:03,623 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:26:03,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:03,689 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,005 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4760 [2024-11-09 19:26:04,005 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:26:04,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:26:04,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:26:04,006 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:26:04,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,260 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]. [2024-11-09 19:26:04,260 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,260 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,398 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,414 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:26:04,525 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:26:04,525 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:26:04,526 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:26:04,527 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (1/1) ... [2024-11-09 19:26:04,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:26:04,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:26:04,559 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) [2024-11-09 19:26:04,561 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 [2024-11-09 19:26:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:26:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:26:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:26:04,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:26:04,672 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:26:04,674 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:26:10,145 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:26:10,145 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2024-11-09 19:26:10,147 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:26:10,466 INFO L? ?]: Removed 2039 outVars from TransFormulas that were not future-live. [2024-11-09 19:26:10,466 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:26:10,510 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:26:10,511 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:26:10,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:26:10 BoogieIcfgContainer [2024-11-09 19:26:10,512 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:26:10,514 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:26:10,515 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:26:10,518 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:26:10,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:26:01" (1/3) ... [2024-11-09 19:26:10,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac9b228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:26:10, skipping insertion in model container [2024-11-09 19:26:10,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:26:03" (2/3) ... [2024-11-09 19:26:10,520 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac9b228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:26:10, skipping insertion in model container [2024-11-09 19:26:10,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:26:10" (3/3) ... [2024-11-09 19:26:10,523 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label19.c [2024-11-09 19:26:10,540 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:26:10,541 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:26:10,630 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:26:10,639 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;@23615e98, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:26:10,641 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:26:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 19:26:10,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:10,657 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:10,658 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:10,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:10,665 INFO L85 PathProgramCache]: Analyzing trace with hash 920354412, now seen corresponding path program 1 times [2024-11-09 19:26:10,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:10,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17095837] [2024-11-09 19:26:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:10,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:26:11,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:11,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17095837] [2024-11-09 19:26:11,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17095837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:11,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:11,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:11,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926769537] [2024-11-09 19:26:11,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:11,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:26:11,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:11,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:26:11,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:26:11,079 INFO L87 Difference]: Start difference. First operand has 821 states, 819 states have (on average 2.744810744810745) internal successors, (2248), 820 states have internal predecessors, (2248), 0 states have call successors, (0), 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 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:18,624 INFO L93 Difference]: Finished difference Result 3163 states and 8878 transitions. [2024-11-09 19:26:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 19:26:18,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-11-09 19:26:18,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:18,663 INFO L225 Difference]: With dead ends: 3163 [2024-11-09 19:26:18,663 INFO L226 Difference]: Without dead ends: 2270 [2024-11-09 19:26:18,671 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 [2024-11-09 19:26:18,676 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 4510 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 5774 mSolverCounterSat, 1719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4510 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 7493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1719 IncrementalHoareTripleChecker+Valid, 5774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:18,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4510 Valid, 241 Invalid, 7493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1719 Valid, 5774 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-09 19:26:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2024-11-09 19:26:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2261. [2024-11-09 19:26:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2260 states have (on average 2.436725663716814) internal successors, (5507), 2260 states have internal predecessors, (5507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 5507 transitions. [2024-11-09 19:26:18,820 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 5507 transitions. Word has length 16 [2024-11-09 19:26:18,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:18,821 INFO L471 AbstractCegarLoop]: Abstraction has 2261 states and 5507 transitions. [2024-11-09 19:26:18,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 5507 transitions. [2024-11-09 19:26:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-09 19:26:18,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:18,830 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:18,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:26:18,831 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:18,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:18,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2133659950, now seen corresponding path program 1 times [2024-11-09 19:26:18,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:18,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149010310] [2024-11-09 19:26:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:18,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:26:19,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:19,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149010310] [2024-11-09 19:26:19,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149010310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:19,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:19,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144661348] [2024-11-09 19:26:19,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:19,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:26:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:26:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:26:19,467 INFO L87 Difference]: Start difference. First operand 2261 states and 5507 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:24,513 INFO L93 Difference]: Finished difference Result 6062 states and 15115 transitions. [2024-11-09 19:26:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:26:24,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2024-11-09 19:26:24,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:24,529 INFO L225 Difference]: With dead ends: 6062 [2024-11-09 19:26:24,530 INFO L226 Difference]: Without dead ends: 3765 [2024-11-09 19:26:24,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:26:24,536 INFO L432 NwaCegarLoop]: 697 mSDtfsCounter, 1368 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5844 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 6508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 5844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:24,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 719 Invalid, 6508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 5844 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 19:26:24,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2024-11-09 19:26:24,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3765. [2024-11-09 19:26:24,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3764 states have (on average 2.2436238044633368) internal successors, (8445), 3764 states have internal predecessors, (8445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 8445 transitions. [2024-11-09 19:26:24,613 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 8445 transitions. Word has length 158 [2024-11-09 19:26:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:24,614 INFO L471 AbstractCegarLoop]: Abstraction has 3765 states and 8445 transitions. [2024-11-09 19:26:24,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 8445 transitions. [2024-11-09 19:26:24,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-09 19:26:24,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:24,618 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:24,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:26:24,618 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:24,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:24,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1895954532, now seen corresponding path program 1 times [2024-11-09 19:26:24,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:24,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054352101] [2024-11-09 19:26:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:24,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 55 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 19:26:25,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:25,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054352101] [2024-11-09 19:26:25,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054352101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:26:25,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98134843] [2024-11-09 19:26:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:25,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:26:25,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:26:25,182 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) [2024-11-09 19:26:25,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:26:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:25,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:26:25,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:26:25,412 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:26:25,412 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:26:25,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98134843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:25,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:26:25,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-09 19:26:25,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504203293] [2024-11-09 19:26:25,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:25,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:25,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:26:25,418 INFO L87 Difference]: Start difference. First operand 3765 states and 8445 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:29,609 INFO L93 Difference]: Finished difference Result 10536 states and 23892 transitions. [2024-11-09 19:26:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:29,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 228 [2024-11-09 19:26:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:29,639 INFO L225 Difference]: With dead ends: 10536 [2024-11-09 19:26:29,639 INFO L226 Difference]: Without dead ends: 6773 [2024-11-09 19:26:29,645 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:26:29,646 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 1427 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3714 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 3714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:29,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 509 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 3714 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-09 19:26:29,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2024-11-09 19:26:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 6773. [2024-11-09 19:26:29,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6772 states have (on average 2.2650620200826936) internal successors, (15339), 6772 states have internal predecessors, (15339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:29,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 15339 transitions. [2024-11-09 19:26:29,802 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 15339 transitions. Word has length 228 [2024-11-09 19:26:29,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:29,803 INFO L471 AbstractCegarLoop]: Abstraction has 6773 states and 15339 transitions. [2024-11-09 19:26:29,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:29,803 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 15339 transitions. [2024-11-09 19:26:29,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-09 19:26:29,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:29,810 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:29,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:26:30,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:26:30,012 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:30,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1130781358, now seen corresponding path program 1 times [2024-11-09 19:26:30,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:30,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354288310] [2024-11-09 19:26:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:30,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 19:26:30,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:30,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354288310] [2024-11-09 19:26:30,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354288310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:30,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:30,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:26:30,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800386637] [2024-11-09 19:26:30,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:30,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:30,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:30,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:30,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:30,252 INFO L87 Difference]: Start difference. First operand 6773 states and 15339 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:34,035 INFO L93 Difference]: Finished difference Result 16555 states and 38551 transitions. [2024-11-09 19:26:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:34,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 235 [2024-11-09 19:26:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:34,067 INFO L225 Difference]: With dead ends: 16555 [2024-11-09 19:26:34,067 INFO L226 Difference]: Without dead ends: 9784 [2024-11-09 19:26:34,075 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:34,076 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 1529 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 3697 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 4163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 3697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:34,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 380 Invalid, 4163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 3697 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:26:34,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2024-11-09 19:26:34,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 9781. [2024-11-09 19:26:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9781 states, 9780 states have (on average 2.2732106339468303) internal successors, (22232), 9780 states have internal predecessors, (22232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:34,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9781 states to 9781 states and 22232 transitions. [2024-11-09 19:26:34,289 INFO L78 Accepts]: Start accepts. Automaton has 9781 states and 22232 transitions. Word has length 235 [2024-11-09 19:26:34,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:34,290 INFO L471 AbstractCegarLoop]: Abstraction has 9781 states and 22232 transitions. [2024-11-09 19:26:34,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:34,290 INFO L276 IsEmpty]: Start isEmpty. Operand 9781 states and 22232 transitions. [2024-11-09 19:26:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-09 19:26:34,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:34,293 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:34,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:26:34,296 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:34,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1735435518, now seen corresponding path program 1 times [2024-11-09 19:26:34,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:34,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826372143] [2024-11-09 19:26:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:34,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:34,516 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-09 19:26:34,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:34,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826372143] [2024-11-09 19:26:34,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826372143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:34,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:34,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:34,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829916590] [2024-11-09 19:26:34,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:34,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:34,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:34,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:34,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:34,522 INFO L87 Difference]: Start difference. First operand 9781 states and 22232 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:38,561 INFO L93 Difference]: Finished difference Result 27832 states and 63744 transitions. [2024-11-09 19:26:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:38,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 258 [2024-11-09 19:26:38,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:38,610 INFO L225 Difference]: With dead ends: 27832 [2024-11-09 19:26:38,610 INFO L226 Difference]: Without dead ends: 18053 [2024-11-09 19:26:38,625 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 [2024-11-09 19:26:38,626 INFO L432 NwaCegarLoop]: 2069 mSDtfsCounter, 1420 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 4298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:38,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2079 Invalid, 4298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:26:38,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2024-11-09 19:26:38,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 18053. [2024-11-09 19:26:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18053 states, 18052 states have (on average 2.1602038555284735) internal successors, (38996), 18052 states have internal predecessors, (38996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:38,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18053 states to 18053 states and 38996 transitions. [2024-11-09 19:26:38,935 INFO L78 Accepts]: Start accepts. Automaton has 18053 states and 38996 transitions. Word has length 258 [2024-11-09 19:26:38,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:38,936 INFO L471 AbstractCegarLoop]: Abstraction has 18053 states and 38996 transitions. [2024-11-09 19:26:38,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 18053 states and 38996 transitions. [2024-11-09 19:26:38,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-09 19:26:38,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:38,941 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:26:38,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:26:38,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:38,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:38,942 INFO L85 PathProgramCache]: Analyzing trace with hash -807026390, now seen corresponding path program 1 times [2024-11-09 19:26:38,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:38,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739778656] [2024-11-09 19:26:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:38,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-09 19:26:39,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:39,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739778656] [2024-11-09 19:26:39,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739778656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:39,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:39,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:26:39,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826536569] [2024-11-09 19:26:39,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:39,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:39,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:39,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:39,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:39,276 INFO L87 Difference]: Start difference. First operand 18053 states and 38996 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:43,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:43,025 INFO L93 Difference]: Finished difference Result 43624 states and 95773 transitions. [2024-11-09 19:26:43,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:26:43,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 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 279 [2024-11-09 19:26:43,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:43,082 INFO L225 Difference]: With dead ends: 43624 [2024-11-09 19:26:43,082 INFO L226 Difference]: Without dead ends: 25573 [2024-11-09 19:26:43,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:43,107 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 1377 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 856 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 4191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 856 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:43,107 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 437 Invalid, 4191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [856 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:26:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25573 states. [2024-11-09 19:26:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25573 to 23317. [2024-11-09 19:26:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23317 states, 23316 states have (on average 2.1406759306913705) internal successors, (49912), 23316 states have internal predecessors, (49912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:43,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23317 states to 23317 states and 49912 transitions. [2024-11-09 19:26:43,602 INFO L78 Accepts]: Start accepts. Automaton has 23317 states and 49912 transitions. Word has length 279 [2024-11-09 19:26:43,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:43,603 INFO L471 AbstractCegarLoop]: Abstraction has 23317 states and 49912 transitions. [2024-11-09 19:26:43,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 2 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:43,604 INFO L276 IsEmpty]: Start isEmpty. Operand 23317 states and 49912 transitions. [2024-11-09 19:26:43,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-09 19:26:43,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:43,611 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:26:43,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:26:43,611 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:43,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:43,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1759118140, now seen corresponding path program 1 times [2024-11-09 19:26:43,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:43,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890824240] [2024-11-09 19:26:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:43,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 38 proven. 110 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-09 19:26:44,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:44,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890824240] [2024-11-09 19:26:44,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890824240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:26:44,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481091754] [2024-11-09 19:26:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:44,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:26:44,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:26:44,050 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) [2024-11-09 19:26:44,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:26:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:44,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 19:26:44,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:26:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 127 proven. 110 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 19:26:45,207 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:26:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 127 proven. 110 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-09 19:26:46,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481091754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 19:26:46,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 19:26:46,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 5 [2024-11-09 19:26:46,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077441335] [2024-11-09 19:26:46,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 19:26:46,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 19:26:46,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:46,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 19:26:46,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:26:46,041 INFO L87 Difference]: Start difference. First operand 23317 states and 49912 transitions. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:57,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:26:57,552 INFO L93 Difference]: Finished difference Result 67688 states and 144850 transitions. [2024-11-09 19:26:57,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 19:26:57,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2024-11-09 19:26:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:26:57,630 INFO L225 Difference]: With dead ends: 67688 [2024-11-09 19:26:57,630 INFO L226 Difference]: Without dead ends: 44373 [2024-11-09 19:26:57,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 722 GetRequests, 715 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:26:57,656 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 8180 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 14789 mSolverCounterSat, 1267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8180 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 16056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1267 IncrementalHoareTripleChecker+Valid, 14789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:26:57,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8180 Valid, 218 Invalid, 16056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1267 Valid, 14789 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2024-11-09 19:26:57,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44373 states. [2024-11-09 19:26:58,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44373 to 42869. [2024-11-09 19:26:58,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42869 states, 42868 states have (on average 2.096132313147336) internal successors, (89857), 42868 states have internal predecessors, (89857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:58,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42869 states to 42869 states and 89857 transitions. [2024-11-09 19:26:58,217 INFO L78 Accepts]: Start accepts. Automaton has 42869 states and 89857 transitions. Word has length 359 [2024-11-09 19:26:58,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:26:58,217 INFO L471 AbstractCegarLoop]: Abstraction has 42869 states and 89857 transitions. [2024-11-09 19:26:58,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 5 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:26:58,218 INFO L276 IsEmpty]: Start isEmpty. Operand 42869 states and 89857 transitions. [2024-11-09 19:26:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-09 19:26:58,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:26:58,225 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:26:58,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:26:58,429 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,SelfDestructingSolverStorable6 [2024-11-09 19:26:58,430 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:26:58,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:26:58,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1993511978, now seen corresponding path program 1 times [2024-11-09 19:26:58,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:26:58,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845581951] [2024-11-09 19:26:58,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:26:58,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:26:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:26:58,625 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 19:26:58,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:26:58,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845581951] [2024-11-09 19:26:58,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845581951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:26:58,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:26:58,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:26:58,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682524282] [2024-11-09 19:26:58,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:26:58,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:26:58,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:26:58,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:26:58,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:26:58,629 INFO L87 Difference]: Start difference. First operand 42869 states and 89857 transitions. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:02,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:02,474 INFO L93 Difference]: Finished difference Result 87240 states and 182660 transitions. [2024-11-09 19:27:02,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:02,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 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 365 [2024-11-09 19:27:02,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:02,550 INFO L225 Difference]: With dead ends: 87240 [2024-11-09 19:27:02,551 INFO L226 Difference]: Without dead ends: 44373 [2024-11-09 19:27:02,582 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 [2024-11-09 19:27:02,583 INFO L432 NwaCegarLoop]: 1800 mSDtfsCounter, 1364 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 3901 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 4304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 3901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:02,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 1808 Invalid, 4304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 3901 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:27:02,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44373 states. [2024-11-09 19:27:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44373 to 37605. [2024-11-09 19:27:03,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37605 states, 37604 states have (on average 2.062413573024146) internal successors, (77555), 37604 states have internal predecessors, (77555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:03,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37605 states to 37605 states and 77555 transitions. [2024-11-09 19:27:03,435 INFO L78 Accepts]: Start accepts. Automaton has 37605 states and 77555 transitions. Word has length 365 [2024-11-09 19:27:03,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:03,436 INFO L471 AbstractCegarLoop]: Abstraction has 37605 states and 77555 transitions. [2024-11-09 19:27:03,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:03,436 INFO L276 IsEmpty]: Start isEmpty. Operand 37605 states and 77555 transitions. [2024-11-09 19:27:03,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-09 19:27:03,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:03,440 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:27:03,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:27:03,440 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:03,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:03,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1196271330, now seen corresponding path program 1 times [2024-11-09 19:27:03,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:03,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583997226] [2024-11-09 19:27:03,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:03,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 26 proven. 217 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-09 19:27:04,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:04,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583997226] [2024-11-09 19:27:04,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583997226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:27:04,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779134419] [2024-11-09 19:27:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:04,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:04,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:27:04,462 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) [2024-11-09 19:27:04,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:27:04,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:04,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:27:04,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:27:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2024-11-09 19:27:04,734 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:27:04,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779134419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:04,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:27:04,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-09 19:27:04,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296196043] [2024-11-09 19:27:04,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:04,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:04,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:04,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:04,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:27:04,737 INFO L87 Difference]: Start difference. First operand 37605 states and 77555 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:08,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:08,396 INFO L93 Difference]: Finished difference Result 75208 states and 155108 transitions. [2024-11-09 19:27:08,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:08,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 369 [2024-11-09 19:27:08,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:08,445 INFO L225 Difference]: With dead ends: 75208 [2024-11-09 19:27:08,445 INFO L226 Difference]: Without dead ends: 37605 [2024-11-09 19:27:08,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:27:08,468 INFO L432 NwaCegarLoop]: 1863 mSDtfsCounter, 1472 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3552 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 4083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 3552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:08,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1873 Invalid, 4083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 3552 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:27:08,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37605 states. [2024-11-09 19:27:08,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37605 to 37605. [2024-11-09 19:27:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37605 states, 37604 states have (on average 2.0055047335389853) internal successors, (75415), 37604 states have internal predecessors, (75415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37605 states to 37605 states and 75415 transitions. [2024-11-09 19:27:09,024 INFO L78 Accepts]: Start accepts. Automaton has 37605 states and 75415 transitions. Word has length 369 [2024-11-09 19:27:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:09,025 INFO L471 AbstractCegarLoop]: Abstraction has 37605 states and 75415 transitions. [2024-11-09 19:27:09,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 37605 states and 75415 transitions. [2024-11-09 19:27:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-09 19:27:09,030 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:09,030 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:09,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:27:09,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:27:09,231 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:09,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1502112210, now seen corresponding path program 1 times [2024-11-09 19:27:09,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:09,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876721505] [2024-11-09 19:27:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:09,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-09 19:27:09,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:09,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876721505] [2024-11-09 19:27:09,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876721505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:09,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:09,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:09,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241262799] [2024-11-09 19:27:09,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:09,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:09,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:09,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:09,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:09,685 INFO L87 Difference]: Start difference. First operand 37605 states and 75415 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:13,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:27:13,528 INFO L93 Difference]: Finished difference Result 78216 states and 156654 transitions. [2024-11-09 19:27:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:27:13,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 398 [2024-11-09 19:27:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:27:13,586 INFO L225 Difference]: With dead ends: 78216 [2024-11-09 19:27:13,586 INFO L226 Difference]: Without dead ends: 39861 [2024-11-09 19:27:13,597 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 [2024-11-09 19:27:13,598 INFO L432 NwaCegarLoop]: 1869 mSDtfsCounter, 1376 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3451 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 3899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 3451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:27:13,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 1879 Invalid, 3899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 3451 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:27:13,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39861 states. [2024-11-09 19:27:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39861 to 39109. [2024-11-09 19:27:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39109 states, 39108 states have (on average 1.9820497084995397) internal successors, (77514), 39108 states have internal predecessors, (77514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:14,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39109 states to 39109 states and 77514 transitions. [2024-11-09 19:27:14,227 INFO L78 Accepts]: Start accepts. Automaton has 39109 states and 77514 transitions. Word has length 398 [2024-11-09 19:27:14,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:27:14,228 INFO L471 AbstractCegarLoop]: Abstraction has 39109 states and 77514 transitions. [2024-11-09 19:27:14,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:27:14,229 INFO L276 IsEmpty]: Start isEmpty. Operand 39109 states and 77514 transitions. [2024-11-09 19:27:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2024-11-09 19:27:14,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:27:14,236 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:27:14,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:27:14,236 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:27:14,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:27:14,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1995060052, now seen corresponding path program 1 times [2024-11-09 19:27:14,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:27:14,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31622693] [2024-11-09 19:27:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:27:14,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:27:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:27:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-09 19:27:14,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:27:14,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31622693] [2024-11-09 19:27:14,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31622693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:27:14,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:27:14,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:27:14,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110771853] [2024-11-09 19:27:14,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:27:14,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:27:14,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:27:14,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:27:14,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:27:14,653 INFO L87 Difference]: Start difference. First operand 39109 states and 77514 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)