./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label32.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/Problem13_label32.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 da6307e18962eea94383e9cef9de875e55374f6b4142b055a170057bc7246c1d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:33:17,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:33:17,707 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:33:17,711 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:33:17,711 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:33:17,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:33:17,730 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:33:17,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:33:17,731 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:33:17,731 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:33:17,731 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:33:17,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:33:17,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:33:17,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:33:17,733 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:33:17,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:33:17,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:33:17,734 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:33:17,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:33:17,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:33:17,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:33:17,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:33:17,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:33:17,741 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:33:17,742 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:33:17,742 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:33:17,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:33:17,742 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:33:17,743 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:33:17,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:33:17,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:33:17,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:33:17,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:33:17,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:33:17,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:33:17,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:33:17,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:33:17,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:33:17,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:33:17,745 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:33:17,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:33:17,748 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:33:17,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da6307e18962eea94383e9cef9de875e55374f6b4142b055a170057bc7246c1d [2024-11-09 19:33:17,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:33:18,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:33:18,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:33:18,016 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:33:18,017 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:33:18,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label32.c [2024-11-09 19:33:19,366 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:33:19,818 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:33:19,820 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label32.c [2024-11-09 19:33:19,857 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a85304fd/58ef8d6e0079447589cd34c0fe513197/FLAG4bfe28037 [2024-11-09 19:33:19,873 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a85304fd/58ef8d6e0079447589cd34c0fe513197 [2024-11-09 19:33:19,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:33:19,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:33:19,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:33:19,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:33:19,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:33:19,890 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:33:19" (1/1) ... [2024-11-09 19:33:19,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72d73630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:19, skipping insertion in model container [2024-11-09 19:33:19,891 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:33:19" (1/1) ... [2024-11-09 19:33:20,021 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:33:20,308 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/Problem13_label32.c[1533,1546] [2024-11-09 19:33:21,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:33:21,178 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:33:21,193 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/Problem13_label32.c[1533,1546] [2024-11-09 19:33:21,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:33:21,735 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:33:21,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21 WrapperNode [2024-11-09 19:33:21,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:33:21,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:33:21,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:33:21,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:33:21,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:21,827 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:22,335 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-09 19:33:22,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:33:22,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:33:22,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:33:22,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:33:22,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:22,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:22,418 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:22,668 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 19:33:22,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:22,669 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:22,983 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:23,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:23,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:23,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:23,193 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:33:23,195 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:33:23,196 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:33:23,196 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:33:23,197 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (1/1) ... [2024-11-09 19:33:23,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:33:23,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:33:23,247 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 19:33:23,266 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 19:33:23,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:33:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:33:23,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:33:23,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:33:23,433 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:33:23,434 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:33:29,559 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-09 19:33:29,560 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:33:29,562 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:33:29,997 INFO L? ?]: Removed 2111 outVars from TransFormulas that were not future-live. [2024-11-09 19:33:29,998 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:33:30,047 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:33:30,048 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:33:30,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:33:30 BoogieIcfgContainer [2024-11-09 19:33:30,049 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:33:30,051 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:33:30,051 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:33:30,054 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:33:30,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:33:19" (1/3) ... [2024-11-09 19:33:30,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720b0d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:33:30, skipping insertion in model container [2024-11-09 19:33:30,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:33:21" (2/3) ... [2024-11-09 19:33:30,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720b0d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:33:30, skipping insertion in model container [2024-11-09 19:33:30,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:33:30" (3/3) ... [2024-11-09 19:33:30,058 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label32.c [2024-11-09 19:33:30,074 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:33:30,074 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:33:30,171 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:33:30,179 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;@463b4cd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:33:30,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:33:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 0 states have call successors, (0), 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 19:33:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 19:33:30,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:30,198 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:33:30,199 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:30,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1353807989, now seen corresponding path program 1 times [2024-11-09 19:33:30,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:30,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066521683] [2024-11-09 19:33:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:30,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:30,427 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 19:33:30,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:30,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066521683] [2024-11-09 19:33:30,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066521683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:30,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:30,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:33:30,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556972618] [2024-11-09 19:33:30,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:30,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:33:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:30,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:33:30,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:33:30,464 INFO L87 Difference]: Start difference. First operand has 1101 states, 1099 states have (on average 2.4767970882620562) internal successors, (2722), 1100 states have internal predecessors, (2722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 19:33:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:35,600 INFO L93 Difference]: Finished difference Result 3041 states and 7797 transitions. [2024-11-09 19:33:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:33:35,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-09 19:33:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:35,630 INFO L225 Difference]: With dead ends: 3041 [2024-11-09 19:33:35,631 INFO L226 Difference]: Without dead ends: 1876 [2024-11-09 19:33:35,640 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 19:33:35,645 INFO L432 NwaCegarLoop]: 990 mSDtfsCounter, 1613 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 3937 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 4795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 3937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:35,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1613 Valid, 1146 Invalid, 4795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 3937 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-09 19:33:35,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2024-11-09 19:33:35,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1862. [2024-11-09 19:33:35,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 2.3127350886620097) internal successors, (4304), 1861 states have internal predecessors, (4304), 0 states have call successors, (0), 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 19:33:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 4304 transitions. [2024-11-09 19:33:35,776 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 4304 transitions. Word has length 10 [2024-11-09 19:33:35,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:35,776 INFO L471 AbstractCegarLoop]: Abstraction has 1862 states and 4304 transitions. [2024-11-09 19:33:35,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 19:33:35,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 4304 transitions. [2024-11-09 19:33:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 19:33:35,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:35,779 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:35,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:33:35,780 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:35,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:35,781 INFO L85 PathProgramCache]: Analyzing trace with hash 730834098, now seen corresponding path program 1 times [2024-11-09 19:33:35,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:35,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251840356] [2024-11-09 19:33:35,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:35,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:36,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:36,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251840356] [2024-11-09 19:33:36,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251840356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:36,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:36,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:33:36,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520215591] [2024-11-09 19:33:36,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:36,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:33:36,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:36,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:33:36,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:33:36,089 INFO L87 Difference]: Start difference. First operand 1862 states and 4304 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 19:33:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:41,781 INFO L93 Difference]: Finished difference Result 5416 states and 12710 transitions. [2024-11-09 19:33:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:33:41,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2024-11-09 19:33:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:41,798 INFO L225 Difference]: With dead ends: 5416 [2024-11-09 19:33:41,798 INFO L226 Difference]: Without dead ends: 3556 [2024-11-09 19:33:41,800 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 19:33:41,801 INFO L432 NwaCegarLoop]: 906 mSDtfsCounter, 1581 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 4776 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 5217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 4776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:41,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1581 Valid, 1042 Invalid, 5217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 4776 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-09 19:33:41,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2024-11-09 19:33:41,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3481. [2024-11-09 19:33:41,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 3480 states have (on average 2.3123563218390806) internal successors, (8047), 3480 states have internal predecessors, (8047), 0 states have call successors, (0), 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 19:33:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 8047 transitions. [2024-11-09 19:33:41,868 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 8047 transitions. Word has length 83 [2024-11-09 19:33:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:41,869 INFO L471 AbstractCegarLoop]: Abstraction has 3481 states and 8047 transitions. [2024-11-09 19:33:41,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 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 19:33:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 8047 transitions. [2024-11-09 19:33:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-09 19:33:41,871 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:41,872 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:41,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:33:41,872 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:41,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash -856859572, now seen corresponding path program 1 times [2024-11-09 19:33:41,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:41,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594096291] [2024-11-09 19:33:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:41,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:42,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:42,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594096291] [2024-11-09 19:33:42,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594096291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:42,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:42,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:33:42,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249231369] [2024-11-09 19:33:42,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:42,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:33:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:42,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:33:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:33:42,286 INFO L87 Difference]: Start difference. First operand 3481 states and 8047 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 19:33:49,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:49,060 INFO L93 Difference]: Finished difference Result 10932 states and 25367 transitions. [2024-11-09 19:33:49,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:33:49,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-09 19:33:49,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:49,092 INFO L225 Difference]: With dead ends: 10932 [2024-11-09 19:33:49,093 INFO L226 Difference]: Without dead ends: 7453 [2024-11-09 19:33:49,100 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 19:33:49,103 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 4742 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 6271 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4742 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 7187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 6271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:49,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4742 Valid, 1010 Invalid, 7187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 6271 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-11-09 19:33:49,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7453 states. [2024-11-09 19:33:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7453 to 7452. [2024-11-09 19:33:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 7451 states have (on average 2.206817876795061) internal successors, (16443), 7451 states have internal predecessors, (16443), 0 states have call successors, (0), 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 19:33:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 16443 transitions. [2024-11-09 19:33:49,250 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 16443 transitions. Word has length 97 [2024-11-09 19:33:49,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:49,253 INFO L471 AbstractCegarLoop]: Abstraction has 7452 states and 16443 transitions. [2024-11-09 19:33:49,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 19:33:49,253 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 16443 transitions. [2024-11-09 19:33:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 19:33:49,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:49,258 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:49,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:33:49,258 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:49,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:49,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1160836516, now seen corresponding path program 1 times [2024-11-09 19:33:49,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:49,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646854896] [2024-11-09 19:33:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:49,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:49,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:49,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:49,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646854896] [2024-11-09 19:33:49,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646854896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:49,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:49,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:33:49,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228771579] [2024-11-09 19:33:49,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:49,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:33:49,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:33:49,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:33:49,459 INFO L87 Difference]: Start difference. First operand 7452 states and 16443 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 19:33:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:33:56,968 INFO L93 Difference]: Finished difference Result 20635 states and 46528 transitions. [2024-11-09 19:33:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:33:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2024-11-09 19:33:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:33:57,015 INFO L225 Difference]: With dead ends: 20635 [2024-11-09 19:33:57,016 INFO L226 Difference]: Without dead ends: 13973 [2024-11-09 19:33:57,025 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 19:33:57,026 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 3246 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 9259 mSolverCounterSat, 1202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3246 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 10461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1202 IncrementalHoareTripleChecker+Valid, 9259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:33:57,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3246 Valid, 922 Invalid, 10461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1202 Valid, 9259 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-09 19:33:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13973 states. [2024-11-09 19:33:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13973 to 13857. [2024-11-09 19:33:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13857 states, 13856 states have (on average 2.2116050808314087) internal successors, (30644), 13856 states have internal predecessors, (30644), 0 states have call successors, (0), 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 19:33:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13857 states to 13857 states and 30644 transitions. [2024-11-09 19:33:57,286 INFO L78 Accepts]: Start accepts. Automaton has 13857 states and 30644 transitions. Word has length 107 [2024-11-09 19:33:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:33:57,287 INFO L471 AbstractCegarLoop]: Abstraction has 13857 states and 30644 transitions. [2024-11-09 19:33:57,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 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 19:33:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 13857 states and 30644 transitions. [2024-11-09 19:33:57,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-09 19:33:57,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:33:57,289 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:33:57,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:33:57,290 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:33:57,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:33:57,294 INFO L85 PathProgramCache]: Analyzing trace with hash -15473290, now seen corresponding path program 1 times [2024-11-09 19:33:57,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:33:57,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952507741] [2024-11-09 19:33:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:33:57,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:33:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:33:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:33:57,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:33:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952507741] [2024-11-09 19:33:57,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952507741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:33:57,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:33:57,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:33:57,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833248810] [2024-11-09 19:33:57,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:33:57,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:33:57,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:33:57,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:33:57,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:33:57,566 INFO L87 Difference]: Start difference. First operand 13857 states and 30644 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 19:34:01,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:34:01,922 INFO L93 Difference]: Finished difference Result 33244 states and 75361 transitions. [2024-11-09 19:34:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:34:01,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-11-09 19:34:01,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:34:01,983 INFO L225 Difference]: With dead ends: 33244 [2024-11-09 19:34:01,983 INFO L226 Difference]: Without dead ends: 20177 [2024-11-09 19:34:02,003 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 19:34:02,006 INFO L432 NwaCegarLoop]: 792 mSDtfsCounter, 1615 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 3808 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 4736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 3808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:34:02,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 913 Invalid, 4736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [928 Valid, 3808 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 19:34:02,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20177 states. [2024-11-09 19:34:02,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20177 to 20166. [2024-11-09 19:34:02,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20166 states, 20165 states have (on average 2.199156955120258) internal successors, (44346), 20165 states have internal predecessors, (44346), 0 states have call successors, (0), 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 19:34:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20166 states to 20166 states and 44346 transitions. [2024-11-09 19:34:02,340 INFO L78 Accepts]: Start accepts. Automaton has 20166 states and 44346 transitions. Word has length 175 [2024-11-09 19:34:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:34:02,341 INFO L471 AbstractCegarLoop]: Abstraction has 20166 states and 44346 transitions. [2024-11-09 19:34:02,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 19:34:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 20166 states and 44346 transitions. [2024-11-09 19:34:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-09 19:34:02,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:34:02,348 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:34:02,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:34:02,349 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:34:02,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:34:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1570785683, now seen corresponding path program 1 times [2024-11-09 19:34:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:34:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775643512] [2024-11-09 19:34:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:34:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:34:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:34:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-09 19:34:02,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:34:02,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775643512] [2024-11-09 19:34:02,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775643512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:34:02,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:34:02,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:34:02,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488722570] [2024-11-09 19:34:02,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:34:02,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:34:02,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:34:02,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:34:02,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:34:02,572 INFO L87 Difference]: Start difference. First operand 20166 states and 44346 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 19:34:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:34:06,925 INFO L93 Difference]: Finished difference Result 58451 states and 129401 transitions. [2024-11-09 19:34:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:34:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 194 [2024-11-09 19:34:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:34:07,009 INFO L225 Difference]: With dead ends: 58451 [2024-11-09 19:34:07,010 INFO L226 Difference]: Without dead ends: 39075 [2024-11-09 19:34:07,037 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 19:34:07,039 INFO L432 NwaCegarLoop]: 905 mSDtfsCounter, 1577 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 3774 mSolverCounterSat, 869 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 4643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 869 IncrementalHoareTripleChecker+Valid, 3774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:34:07,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 1053 Invalid, 4643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [869 Valid, 3774 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 19:34:07,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39075 states. [2024-11-09 19:34:07,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39075 to 39072. [2024-11-09 19:34:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39072 states, 39071 states have (on average 2.1165314427580557) internal successors, (82695), 39071 states have internal predecessors, (82695), 0 states have call successors, (0), 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 19:34:07,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39072 states to 39072 states and 82695 transitions. [2024-11-09 19:34:07,539 INFO L78 Accepts]: Start accepts. Automaton has 39072 states and 82695 transitions. Word has length 194 [2024-11-09 19:34:07,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:34:07,540 INFO L471 AbstractCegarLoop]: Abstraction has 39072 states and 82695 transitions. [2024-11-09 19:34:07,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 19:34:07,540 INFO L276 IsEmpty]: Start isEmpty. Operand 39072 states and 82695 transitions. [2024-11-09 19:34:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-09 19:34:07,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:34:07,542 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:34:07,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:34:07,543 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:34:07,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:34:07,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2130111474, now seen corresponding path program 1 times [2024-11-09 19:34:07,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:34:07,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887002472] [2024-11-09 19:34:07,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:34:07,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:34:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:34:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-09 19:34:07,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:34:07,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887002472] [2024-11-09 19:34:07,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887002472] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:34:07,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:34:07,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:34:07,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956599278] [2024-11-09 19:34:07,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:34:07,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:34:07,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:34:07,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:34:07,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:34:07,736 INFO L87 Difference]: Start difference. First operand 39072 states and 82695 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 19:34:12,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:34:12,223 INFO L93 Difference]: Finished difference Result 89193 states and 191143 transitions. [2024-11-09 19:34:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:34:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 197 [2024-11-09 19:34:12,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:34:12,322 INFO L225 Difference]: With dead ends: 89193 [2024-11-09 19:34:12,322 INFO L226 Difference]: Without dead ends: 50911 [2024-11-09 19:34:12,355 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 19:34:12,355 INFO L432 NwaCegarLoop]: 775 mSDtfsCounter, 1729 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 3834 mSolverCounterSat, 981 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 4815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 981 IncrementalHoareTripleChecker+Valid, 3834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:34:12,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1729 Valid, 863 Invalid, 4815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [981 Valid, 3834 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 19:34:12,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50911 states. [2024-11-09 19:34:13,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50911 to 50896. [2024-11-09 19:34:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50896 states, 50895 states have (on average 2.1284409077512527) internal successors, (108327), 50895 states have internal predecessors, (108327), 0 states have call successors, (0), 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 19:34:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50896 states to 50896 states and 108327 transitions. [2024-11-09 19:34:13,583 INFO L78 Accepts]: Start accepts. Automaton has 50896 states and 108327 transitions. Word has length 197 [2024-11-09 19:34:13,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:34:13,584 INFO L471 AbstractCegarLoop]: Abstraction has 50896 states and 108327 transitions. [2024-11-09 19:34:13,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 19:34:13,584 INFO L276 IsEmpty]: Start isEmpty. Operand 50896 states and 108327 transitions. [2024-11-09 19:34:13,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-09 19:34:13,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:34:13,587 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:13,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:34:13,588 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:34:13,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:34:13,588 INFO L85 PathProgramCache]: Analyzing trace with hash -428879506, now seen corresponding path program 1 times [2024-11-09 19:34:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:34:13,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560841887] [2024-11-09 19:34:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:34:13,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:34:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:34:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-09 19:34:13,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:34:13,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560841887] [2024-11-09 19:34:13,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560841887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:34:13,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:34:13,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:34:13,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766909153] [2024-11-09 19:34:13,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:34:13,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:34:13,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:34:13,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:34:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:34:13,926 INFO L87 Difference]: Start difference. First operand 50896 states and 108327 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 19:34:18,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:34:18,492 INFO L93 Difference]: Finished difference Result 113615 states and 244014 transitions. [2024-11-09 19:34:18,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:34:18,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 19:34:18,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:34:18,717 INFO L225 Difference]: With dead ends: 113615 [2024-11-09 19:34:18,717 INFO L226 Difference]: Without dead ends: 63509 [2024-11-09 19:34:18,769 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 19:34:18,770 INFO L432 NwaCegarLoop]: 2434 mSDtfsCounter, 1595 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 3923 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 4653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 3923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:34:18,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 2585 Invalid, 4653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 3923 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-09 19:34:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63509 states. [2024-11-09 19:34:19,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63509 to 63504. [2024-11-09 19:34:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63504 states, 63503 states have (on average 2.105538321024204) internal successors, (133708), 63503 states have internal predecessors, (133708), 0 states have call successors, (0), 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 19:34:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63504 states to 63504 states and 133708 transitions. [2024-11-09 19:34:19,908 INFO L78 Accepts]: Start accepts. Automaton has 63504 states and 133708 transitions. Word has length 228 [2024-11-09 19:34:19,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:34:19,909 INFO L471 AbstractCegarLoop]: Abstraction has 63504 states and 133708 transitions. [2024-11-09 19:34:19,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 19:34:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 63504 states and 133708 transitions. [2024-11-09 19:34:19,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-09 19:34:19,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:34:19,917 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-09 19:34:19,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:34:19,918 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:34:19,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:34:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1620221740, now seen corresponding path program 1 times [2024-11-09 19:34:19,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:34:19,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3362213] [2024-11-09 19:34:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:34:19,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:34:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:34:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-09 19:34:20,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:34:20,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3362213] [2024-11-09 19:34:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3362213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:34:20,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:34:20,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:34:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607301834] [2024-11-09 19:34:20,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:34:20,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:34:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:34:20,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:34:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:34:20,342 INFO L87 Difference]: Start difference. First operand 63504 states and 133708 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 19:34:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:34:25,115 INFO L93 Difference]: Finished difference Result 126198 states and 265886 transitions. [2024-11-09 19:34:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:34:25,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 307 [2024-11-09 19:34:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:34:25,212 INFO L225 Difference]: With dead ends: 126198 [2024-11-09 19:34:25,212 INFO L226 Difference]: Without dead ends: 63484 [2024-11-09 19:34:25,240 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 19:34:25,241 INFO L432 NwaCegarLoop]: 2236 mSDtfsCounter, 1744 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 4383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:34:25,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1744 Valid, 2375 Invalid, 4383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-09 19:34:25,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63484 states. [2024-11-09 19:34:26,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63484 to 63479. [2024-11-09 19:34:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63479 states, 63478 states have (on average 2.0433536028230255) internal successors, (129708), 63478 states have internal predecessors, (129708), 0 states have call successors, (0), 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 19:34:26,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63479 states to 63479 states and 129708 transitions. [2024-11-09 19:34:26,134 INFO L78 Accepts]: Start accepts. Automaton has 63479 states and 129708 transitions. Word has length 307 [2024-11-09 19:34:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:34:26,135 INFO L471 AbstractCegarLoop]: Abstraction has 63479 states and 129708 transitions. [2024-11-09 19:34:26,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 19:34:26,135 INFO L276 IsEmpty]: Start isEmpty. Operand 63479 states and 129708 transitions. [2024-11-09 19:34:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-09 19:34:26,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:34:26,140 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:34:26,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:34:26,140 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:34:26,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:34:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1998569139, now seen corresponding path program 1 times [2024-11-09 19:34:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:34:26,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369867565] [2024-11-09 19:34:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:34:26,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:34:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:34:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-09 19:34:26,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:34:26,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369867565] [2024-11-09 19:34:26,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369867565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:34:26,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:34:26,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:34:26,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369244036] [2024-11-09 19:34:26,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:34:26,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:34:26,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:34:26,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:34:26,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:34:26,696 INFO L87 Difference]: Start difference. First operand 63479 states and 129708 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 19:34:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:34:31,919 INFO L93 Difference]: Finished difference Result 182133 states and 372593 transitions. [2024-11-09 19:34:31,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:34:31,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 310 [2024-11-09 19:34:31,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:34:32,288 INFO L225 Difference]: With dead ends: 182133 [2024-11-09 19:34:32,288 INFO L226 Difference]: Without dead ends: 119444 [2024-11-09 19:34:32,311 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 19:34:32,312 INFO L432 NwaCegarLoop]: 910 mSDtfsCounter, 1459 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4018 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 4746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 4018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:34:32,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 1037 Invalid, 4746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 4018 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-09 19:34:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119444 states. [2024-11-09 19:34:33,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119444 to 103662. [2024-11-09 19:34:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103662 states, 103661 states have (on average 2.017972043487908) internal successors, (209185), 103661 states have internal predecessors, (209185), 0 states have call successors, (0), 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 19:34:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103662 states to 103662 states and 209185 transitions. [2024-11-09 19:34:34,161 INFO L78 Accepts]: Start accepts. Automaton has 103662 states and 209185 transitions. Word has length 310 [2024-11-09 19:34:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:34:34,161 INFO L471 AbstractCegarLoop]: Abstraction has 103662 states and 209185 transitions. [2024-11-09 19:34:34,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 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 19:34:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 103662 states and 209185 transitions. [2024-11-09 19:34:34,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2024-11-09 19:34:34,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:34:34,167 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-09 19:34:34,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:34:34,167 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:34:34,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:34:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1188013221, now seen corresponding path program 1 times [2024-11-09 19:34:34,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:34:34,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701880183] [2024-11-09 19:34:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:34:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:34:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:34:34,973 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-09 19:34:34,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:34:34,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701880183] [2024-11-09 19:34:34,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701880183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:34:34,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:34:34,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:34:34,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071945255] [2024-11-09 19:34:34,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:34:34,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:34:34,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:34:34,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:34:34,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:34:34,975 INFO L87 Difference]: Start difference. First operand 103662 states and 209185 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)