./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem13_label02.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_label02.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 48aec8d1d241a0a7736380f3571da3a89472d426f8d78df6e318e9a8d52f121e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:30:17,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:30:17,746 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:30:17,750 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:30:17,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:30:17,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:30:17,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:30:17,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:30:17,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:30:17,778 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:30:17,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:30:17,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:30:17,779 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:30:17,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:30:17,781 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:30:17,781 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:30:17,781 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:30:17,782 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:30:17,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:30:17,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:30:17,785 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:30:17,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:30:17,786 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:30:17,786 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:30:17,786 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:30:17,786 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:30:17,786 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:30:17,787 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:30:17,787 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:30:17,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:30:17,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:30:17,787 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:30:17,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:30:17,788 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:30:17,788 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:30:17,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:30:17,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:30:17,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:30:17,789 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:30:17,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:30:17,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:30:17,790 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:30:17,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48aec8d1d241a0a7736380f3571da3a89472d426f8d78df6e318e9a8d52f121e [2024-11-09 19:30:17,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:30:18,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:30:18,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:30:18,008 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:30:18,009 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:30:18,010 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem13_label02.c [2024-11-09 19:30:19,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:30:19,502 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:30:19,504 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem13_label02.c [2024-11-09 19:30:19,532 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9891dc7d1/0f45a2dce88347999f25d0259cb7cc7b/FLAG354fda98a [2024-11-09 19:30:19,584 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9891dc7d1/0f45a2dce88347999f25d0259cb7cc7b [2024-11-09 19:30:19,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:30:19,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:30:19,591 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:30:19,591 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:30:19,616 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:30:19,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:30:19" (1/1) ... [2024-11-09 19:30:19,617 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79209121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:19, skipping insertion in model container [2024-11-09 19:30:19,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:30:19" (1/1) ... [2024-11-09 19:30:19,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:30:19,889 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_label02.c[5671,5684] [2024-11-09 19:30:20,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:30:20,515 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:30:20,534 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_label02.c[5671,5684] [2024-11-09 19:30:20,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:30:20,906 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:30:20,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20 WrapperNode [2024-11-09 19:30:20,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:30:20,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:30:20,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:30:20,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:30:20,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:20,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,381 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-09 19:30:21,382 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:30:21,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:30:21,383 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:30:21,383 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:30:21,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,459 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,651 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 19:30:21,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,812 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:30:21,934 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:30:21,934 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:30:21,934 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:30:21,935 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (1/1) ... [2024-11-09 19:30:21,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:30:21,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:30:21,965 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 19:30:21,966 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 19:30:22,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:30:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:30:22,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:30:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:30:22,062 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:30:22,064 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:30:26,656 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1894: havoc calculate_output_#t~ret9#1; [2024-11-09 19:30:26,656 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L3629: havoc calculate_output2_#t~ret10#1; [2024-11-09 19:30:26,656 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L5351: havoc calculate_output3_#t~ret11#1; [2024-11-09 19:30:26,948 INFO L? ?]: Removed 2111 outVars from TransFormulas that were not future-live. [2024-11-09 19:30:26,948 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:30:26,983 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:30:26,984 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:30:26,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:30:26 BoogieIcfgContainer [2024-11-09 19:30:26,984 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:30:26,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:30:26,986 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:30:26,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:30:26,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:30:19" (1/3) ... [2024-11-09 19:30:26,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749413fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:30:26, skipping insertion in model container [2024-11-09 19:30:26,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:30:20" (2/3) ... [2024-11-09 19:30:26,991 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749413fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:30:26, skipping insertion in model container [2024-11-09 19:30:26,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:30:26" (3/3) ... [2024-11-09 19:30:26,992 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label02.c [2024-11-09 19:30:27,004 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:30:27,005 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:30:27,085 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:30:27,091 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;@2e880d32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:30:27,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:30:27,101 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 19:30:27,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 19:30:27,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:27,108 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:30:27,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:27,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:27,112 INFO L85 PathProgramCache]: Analyzing trace with hash 771944040, now seen corresponding path program 1 times [2024-11-09 19:30:27,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:27,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138395847] [2024-11-09 19:30:27,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:27,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:27,386 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 19:30:27,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:27,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138395847] [2024-11-09 19:30:27,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138395847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:27,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:27,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:30:27,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420991372] [2024-11-09 19:30:27,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:27,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:27,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:27,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:27,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:27,411 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 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:31,729 INFO L93 Difference]: Finished difference Result 3088 states and 7843 transitions. [2024-11-09 19:30:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:30:31,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-09 19:30:31,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:31,756 INFO L225 Difference]: With dead ends: 3088 [2024-11-09 19:30:31,756 INFO L226 Difference]: Without dead ends: 1902 [2024-11-09 19:30:31,765 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 19:30:31,768 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 1716 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 4986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:31,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 642 Invalid, 4986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 19:30:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2024-11-09 19:30:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1897. [2024-11-09 19:30:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1897 states, 1896 states have (on average 2.4915611814345993) internal successors, (4724), 1896 states have internal predecessors, (4724), 0 states have call successors, (0), 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 19:30:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1897 states to 1897 states and 4724 transitions. [2024-11-09 19:30:31,851 INFO L78 Accepts]: Start accepts. Automaton has 1897 states and 4724 transitions. Word has length 41 [2024-11-09 19:30:31,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:31,851 INFO L471 AbstractCegarLoop]: Abstraction has 1897 states and 4724 transitions. [2024-11-09 19:30:31,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:30:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1897 states and 4724 transitions. [2024-11-09 19:30:31,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 19:30:31,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:31,854 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:30:31,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:30:31,854 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:31,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1691295603, now seen corresponding path program 1 times [2024-11-09 19:30:31,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:31,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808128979] [2024-11-09 19:30:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:31,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:32,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:32,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808128979] [2024-11-09 19:30:32,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808128979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:32,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:32,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:30:32,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849503845] [2024-11-09 19:30:32,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:32,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:32,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:32,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:32,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:32,133 INFO L87 Difference]: Start difference. First operand 1897 states and 4724 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 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 19:30:36,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:36,112 INFO L93 Difference]: Finished difference Result 5445 states and 13870 transitions. [2024-11-09 19:30:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:30:36,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 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 19:30:36,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:36,123 INFO L225 Difference]: With dead ends: 5445 [2024-11-09 19:30:36,123 INFO L226 Difference]: Without dead ends: 3550 [2024-11-09 19:30:36,125 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 19:30:36,126 INFO L432 NwaCegarLoop]: 747 mSDtfsCounter, 1531 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 4920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:36,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 885 Invalid, 4920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-09 19:30:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2024-11-09 19:30:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3489. [2024-11-09 19:30:36,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3489 states, 3488 states have (on average 2.406823394495413) internal successors, (8395), 3488 states have internal predecessors, (8395), 0 states have call successors, (0), 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 19:30:36,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 8395 transitions. [2024-11-09 19:30:36,172 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 8395 transitions. Word has length 107 [2024-11-09 19:30:36,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:36,172 INFO L471 AbstractCegarLoop]: Abstraction has 3489 states and 8395 transitions. [2024-11-09 19:30:36,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 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 19:30:36,173 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 8395 transitions. [2024-11-09 19:30:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 19:30:36,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:36,175 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:30:36,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:30:36,175 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:36,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:36,176 INFO L85 PathProgramCache]: Analyzing trace with hash 657767571, now seen corresponding path program 1 times [2024-11-09 19:30:36,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200756889] [2024-11-09 19:30:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:36,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:36,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200756889] [2024-11-09 19:30:36,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200756889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:36,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:36,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:30:36,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135621225] [2024-11-09 19:30:36,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:36,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:36,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:36,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:36,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:36,290 INFO L87 Difference]: Start difference. First operand 3489 states and 8395 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 19:30:40,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:40,005 INFO L93 Difference]: Finished difference Result 10164 states and 24767 transitions. [2024-11-09 19:30:40,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:30:40,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2024-11-09 19:30:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:40,029 INFO L225 Difference]: With dead ends: 10164 [2024-11-09 19:30:40,031 INFO L226 Difference]: Without dead ends: 6677 [2024-11-09 19:30:40,037 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 19:30:40,038 INFO L432 NwaCegarLoop]: 1054 mSDtfsCounter, 1518 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 3943 mSolverCounterSat, 780 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 4723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 780 IncrementalHoareTripleChecker+Valid, 3943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:40,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1205 Invalid, 4723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [780 Valid, 3943 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-09 19:30:40,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6677 states. [2024-11-09 19:30:40,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6677 to 6661. [2024-11-09 19:30:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6661 states, 6660 states have (on average 2.2372372372372373) internal successors, (14900), 6660 states have internal predecessors, (14900), 0 states have call successors, (0), 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 19:30:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6661 states to 6661 states and 14900 transitions. [2024-11-09 19:30:40,167 INFO L78 Accepts]: Start accepts. Automaton has 6661 states and 14900 transitions. Word has length 108 [2024-11-09 19:30:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:40,169 INFO L471 AbstractCegarLoop]: Abstraction has 6661 states and 14900 transitions. [2024-11-09 19:30:40,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 2 states have internal predecessors, (108), 0 states have call successors, (0), 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 19:30:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6661 states and 14900 transitions. [2024-11-09 19:30:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-09 19:30:40,171 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:40,171 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:30:40,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:30:40,171 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:40,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:40,172 INFO L85 PathProgramCache]: Analyzing trace with hash 168098765, now seen corresponding path program 1 times [2024-11-09 19:30:40,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:40,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454541328] [2024-11-09 19:30:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:40,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:40,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:40,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454541328] [2024-11-09 19:30:40,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454541328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:40,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:40,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:30:40,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128876676] [2024-11-09 19:30:40,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:40,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:30:40,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:40,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:30:40,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:30:40,475 INFO L87 Difference]: Start difference. First operand 6661 states and 14900 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 19:30:45,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:45,704 INFO L93 Difference]: Finished difference Result 14110 states and 32130 transitions. [2024-11-09 19:30:45,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:30:45,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2024-11-09 19:30:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:45,724 INFO L225 Difference]: With dead ends: 14110 [2024-11-09 19:30:45,724 INFO L226 Difference]: Without dead ends: 7451 [2024-11-09 19:30:45,728 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 19:30:45,729 INFO L432 NwaCegarLoop]: 736 mSDtfsCounter, 4726 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 6299 mSolverCounterSat, 841 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 7140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 841 IncrementalHoareTripleChecker+Valid, 6299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:45,729 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4726 Valid, 1035 Invalid, 7140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [841 Valid, 6299 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-09 19:30:45,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2024-11-09 19:30:45,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 7450. [2024-11-09 19:30:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7450 states, 7449 states have (on average 2.2098268223922672) internal successors, (16461), 7449 states have internal predecessors, (16461), 0 states have call successors, (0), 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 19:30:45,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7450 states to 7450 states and 16461 transitions. [2024-11-09 19:30:45,833 INFO L78 Accepts]: Start accepts. Automaton has 7450 states and 16461 transitions. Word has length 128 [2024-11-09 19:30:45,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:45,834 INFO L471 AbstractCegarLoop]: Abstraction has 7450 states and 16461 transitions. [2024-11-09 19:30:45,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 19:30:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7450 states and 16461 transitions. [2024-11-09 19:30:45,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-09 19:30:45,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:45,836 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:30:45,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:30:45,836 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:45,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:45,837 INFO L85 PathProgramCache]: Analyzing trace with hash -146641674, now seen corresponding path program 1 times [2024-11-09 19:30:45,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904054480] [2024-11-09 19:30:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:45,981 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:45,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:45,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904054480] [2024-11-09 19:30:45,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904054480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:45,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:45,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:30:45,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852190545] [2024-11-09 19:30:45,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:45,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:30:45,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:45,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:30:45,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:30:45,984 INFO L87 Difference]: Start difference. First operand 7450 states and 16461 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 19:30:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:52,373 INFO L93 Difference]: Finished difference Result 25323 states and 57290 transitions. [2024-11-09 19:30:52,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:30:52,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2024-11-09 19:30:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:52,401 INFO L225 Difference]: With dead ends: 25323 [2024-11-09 19:30:52,401 INFO L226 Difference]: Without dead ends: 18663 [2024-11-09 19:30:52,407 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 19:30:52,408 INFO L432 NwaCegarLoop]: 1003 mSDtfsCounter, 3100 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 8790 mSolverCounterSat, 637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 9427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 637 IncrementalHoareTripleChecker+Valid, 8790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:52,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 1181 Invalid, 9427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [637 Valid, 8790 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-09 19:30:52,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18663 states. [2024-11-09 19:30:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18663 to 18525. [2024-11-09 19:30:52,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18525 states, 18524 states have (on average 2.1874865039948177) internal successors, (40521), 18524 states have internal predecessors, (40521), 0 states have call successors, (0), 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 19:30:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18525 states to 18525 states and 40521 transitions. [2024-11-09 19:30:52,611 INFO L78 Accepts]: Start accepts. Automaton has 18525 states and 40521 transitions. Word has length 167 [2024-11-09 19:30:52,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:52,612 INFO L471 AbstractCegarLoop]: Abstraction has 18525 states and 40521 transitions. [2024-11-09 19:30:52,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 19:30:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 18525 states and 40521 transitions. [2024-11-09 19:30:52,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-09 19:30:52,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:52,616 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:30:52,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:30:52,616 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:52,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1057450933, now seen corresponding path program 1 times [2024-11-09 19:30:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:52,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596321545] [2024-11-09 19:30:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:30:52,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596321545] [2024-11-09 19:30:52,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596321545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:52,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:52,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:30:52,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164917803] [2024-11-09 19:30:52,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:52,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:52,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:52,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:52,741 INFO L87 Difference]: Start difference. First operand 18525 states and 40521 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 19:30:56,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:30:56,729 INFO L93 Difference]: Finished difference Result 50482 states and 111744 transitions. [2024-11-09 19:30:56,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:30:56,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 210 [2024-11-09 19:30:56,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:30:56,787 INFO L225 Difference]: With dead ends: 50482 [2024-11-09 19:30:56,787 INFO L226 Difference]: Without dead ends: 32747 [2024-11-09 19:30:56,800 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 19:30:56,802 INFO L432 NwaCegarLoop]: 758 mSDtfsCounter, 1663 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 3965 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 3965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:30:56,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 890 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 3965 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 19:30:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32747 states. [2024-11-09 19:30:57,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32747 to 32736. [2024-11-09 19:30:57,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32736 states, 32735 states have (on average 2.12711165419276) internal successors, (69631), 32735 states have internal predecessors, (69631), 0 states have call successors, (0), 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 19:30:57,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32736 states to 32736 states and 69631 transitions. [2024-11-09 19:30:57,140 INFO L78 Accepts]: Start accepts. Automaton has 32736 states and 69631 transitions. Word has length 210 [2024-11-09 19:30:57,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:30:57,140 INFO L471 AbstractCegarLoop]: Abstraction has 32736 states and 69631 transitions. [2024-11-09 19:30:57,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 2 states have internal predecessors, (140), 0 states have call successors, (0), 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 19:30:57,141 INFO L276 IsEmpty]: Start isEmpty. Operand 32736 states and 69631 transitions. [2024-11-09 19:30:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-09 19:30:57,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:30:57,147 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:30:57,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:30:57,147 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:30:57,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:30:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1828537761, now seen corresponding path program 1 times [2024-11-09 19:30:57,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:30:57,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173231177] [2024-11-09 19:30:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:30:57,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:30:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:30:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:30:57,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:30:57,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173231177] [2024-11-09 19:30:57,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173231177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:30:57,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:30:57,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:30:57,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330615065] [2024-11-09 19:30:57,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:30:57,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:30:57,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:30:57,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:30:57,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:30:57,278 INFO L87 Difference]: Start difference. First operand 32736 states and 69631 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 19:31:01,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:01,261 INFO L93 Difference]: Finished difference Result 79669 states and 171887 transitions. [2024-11-09 19:31:01,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:01,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2024-11-09 19:31:01,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:01,322 INFO L225 Difference]: With dead ends: 79669 [2024-11-09 19:31:01,322 INFO L226 Difference]: Without dead ends: 47723 [2024-11-09 19:31:01,345 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 19:31:01,346 INFO L432 NwaCegarLoop]: 923 mSDtfsCounter, 1536 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 3859 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 4743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 3859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:01,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1042 Invalid, 4743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [884 Valid, 3859 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:31:01,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47723 states. [2024-11-09 19:31:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47723 to 47713. [2024-11-09 19:31:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47713 states, 47712 states have (on average 2.1130742790073778) internal successors, (100819), 47712 states have internal predecessors, (100819), 0 states have call successors, (0), 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 19:31:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47713 states to 47713 states and 100819 transitions. [2024-11-09 19:31:01,841 INFO L78 Accepts]: Start accepts. Automaton has 47713 states and 100819 transitions. Word has length 261 [2024-11-09 19:31:01,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:01,842 INFO L471 AbstractCegarLoop]: Abstraction has 47713 states and 100819 transitions. [2024-11-09 19:31:01,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 19:31:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand 47713 states and 100819 transitions. [2024-11-09 19:31:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-09 19:31:01,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:01,846 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:31:01,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:31:01,846 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:01,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:01,847 INFO L85 PathProgramCache]: Analyzing trace with hash -489393119, now seen corresponding path program 1 times [2024-11-09 19:31:01,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:01,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739068219] [2024-11-09 19:31:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-09 19:31:02,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:02,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739068219] [2024-11-09 19:31:02,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739068219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:02,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:02,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:31:02,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258068984] [2024-11-09 19:31:02,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:02,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:02,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:02,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:02,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:02,032 INFO L87 Difference]: Start difference. First operand 47713 states and 100819 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 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 19:31:05,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:05,802 INFO L93 Difference]: Finished difference Result 126936 states and 269765 transitions. [2024-11-09 19:31:05,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 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 273 [2024-11-09 19:31:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:05,903 INFO L225 Difference]: With dead ends: 126936 [2024-11-09 19:31:05,903 INFO L226 Difference]: Without dead ends: 80013 [2024-11-09 19:31:05,939 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 19:31:05,939 INFO L432 NwaCegarLoop]: 853 mSDtfsCounter, 1569 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 3747 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 3747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:05,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 1001 Invalid, 4615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [868 Valid, 3747 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 19:31:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80013 states. [2024-11-09 19:31:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80013 to 76069. [2024-11-09 19:31:06,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76069 states, 76068 states have (on average 2.07340800336541) internal successors, (157720), 76068 states have internal predecessors, (157720), 0 states have call successors, (0), 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 19:31:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76069 states to 76069 states and 157720 transitions. [2024-11-09 19:31:06,905 INFO L78 Accepts]: Start accepts. Automaton has 76069 states and 157720 transitions. Word has length 273 [2024-11-09 19:31:06,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:06,906 INFO L471 AbstractCegarLoop]: Abstraction has 76069 states and 157720 transitions. [2024-11-09 19:31:06,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 2 states have internal predecessors, (169), 0 states have call successors, (0), 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 19:31:06,906 INFO L276 IsEmpty]: Start isEmpty. Operand 76069 states and 157720 transitions. [2024-11-09 19:31:06,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2024-11-09 19:31:06,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:06,910 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:06,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:31:06,911 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:06,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1742622562, now seen corresponding path program 1 times [2024-11-09 19:31:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691960952] [2024-11-09 19:31:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:06,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 19:31:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691960952] [2024-11-09 19:31:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691960952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:07,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:07,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:31:07,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872335752] [2024-11-09 19:31:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:07,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:31:07,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:07,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:31:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:31:07,080 INFO L87 Difference]: Start difference. First operand 76069 states and 157720 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 19:31:14,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:14,584 INFO L93 Difference]: Finished difference Result 205947 states and 428864 transitions. [2024-11-09 19:31:14,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:31:14,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 327 [2024-11-09 19:31:14,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:14,934 INFO L225 Difference]: With dead ends: 205947 [2024-11-09 19:31:14,934 INFO L226 Difference]: Without dead ends: 130668 [2024-11-09 19:31:14,982 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 19:31:14,984 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 3169 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 9493 mSolverCounterSat, 1137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3169 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 10630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1137 IncrementalHoareTripleChecker+Valid, 9493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:14,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3169 Valid, 705 Invalid, 10630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1137 Valid, 9493 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-09 19:31:15,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130668 states. [2024-11-09 19:31:16,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130668 to 130536. [2024-11-09 19:31:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130536 states, 130535 states have (on average 2.0675757459685142) internal successors, (269891), 130535 states have internal predecessors, (269891), 0 states have call successors, (0), 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 19:31:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130536 states to 130536 states and 269891 transitions. [2024-11-09 19:31:17,094 INFO L78 Accepts]: Start accepts. Automaton has 130536 states and 269891 transitions. Word has length 327 [2024-11-09 19:31:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:17,095 INFO L471 AbstractCegarLoop]: Abstraction has 130536 states and 269891 transitions. [2024-11-09 19:31:17,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 19:31:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 130536 states and 269891 transitions. [2024-11-09 19:31:17,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-09 19:31:17,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:17,101 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:31:17,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:31:17,101 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:17,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:17,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1560019187, now seen corresponding path program 1 times [2024-11-09 19:31:17,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:17,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520622909] [2024-11-09 19:31:17,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:17,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 316 proven. 26 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 19:31:17,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520622909] [2024-11-09 19:31:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520622909] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:31:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218770327] [2024-11-09 19:31:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:17,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:31:17,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:31:17,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:31:17,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:31:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:17,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 19:31:17,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:31:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 19:31:18,232 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:31:18,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218770327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:18,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:31:18,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:31:18,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860787789] [2024-11-09 19:31:18,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:18,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:31:18,234 INFO L87 Difference]: Start difference. First operand 130536 states and 269891 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 19:31:23,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:23,066 INFO L93 Difference]: Finished difference Result 309125 states and 643595 transitions. [2024-11-09 19:31:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:23,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 341 [2024-11-09 19:31:23,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:23,344 INFO L225 Difference]: With dead ends: 309125 [2024-11-09 19:31:23,344 INFO L226 Difference]: Without dead ends: 193575 [2024-11-09 19:31:23,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:31:23,586 INFO L432 NwaCegarLoop]: 961 mSDtfsCounter, 1452 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 3889 mSolverCounterSat, 765 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 4654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 765 IncrementalHoareTripleChecker+Valid, 3889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:23,586 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 1133 Invalid, 4654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [765 Valid, 3889 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 19:31:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193575 states. [2024-11-09 19:31:25,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193575 to 180177. [2024-11-09 19:31:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180177 states, 180176 states have (on average 2.0314026285409823) internal successors, (366010), 180176 states have internal predecessors, (366010), 0 states have call successors, (0), 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 19:31:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180177 states to 180177 states and 366010 transitions. [2024-11-09 19:31:26,239 INFO L78 Accepts]: Start accepts. Automaton has 180177 states and 366010 transitions. Word has length 341 [2024-11-09 19:31:26,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:26,240 INFO L471 AbstractCegarLoop]: Abstraction has 180177 states and 366010 transitions. [2024-11-09 19:31:26,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 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 19:31:26,240 INFO L276 IsEmpty]: Start isEmpty. Operand 180177 states and 366010 transitions. [2024-11-09 19:31:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-09 19:31:26,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:26,246 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:31:26,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:31:26,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 19:31:26,447 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:26,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:26,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1705729831, now seen corresponding path program 1 times [2024-11-09 19:31:26,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:26,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317490022] [2024-11-09 19:31:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 300 proven. 114 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 19:31:27,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:27,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317490022] [2024-11-09 19:31:27,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317490022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:31:27,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830017965] [2024-11-09 19:31:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:27,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:31:27,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:31:27,923 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:31:27,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:31:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:28,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:31:28,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:31:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-09 19:31:28,188 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:31:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830017965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:28,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:31:28,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-09 19:31:28,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103881798] [2024-11-09 19:31:28,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:28,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:28,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:28,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:28,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:31:28,190 INFO L87 Difference]: Start difference. First operand 180177 states and 366010 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 19:31:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:31:32,757 INFO L93 Difference]: Finished difference Result 358774 states and 728934 transitions. [2024-11-09 19:31:32,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:31:32,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 399 [2024-11-09 19:31:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:31:33,045 INFO L225 Difference]: With dead ends: 358774 [2024-11-09 19:31:33,045 INFO L226 Difference]: Without dead ends: 179387 [2024-11-09 19:31:33,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-09 19:31:33,113 INFO L432 NwaCegarLoop]: 2078 mSDtfsCounter, 1808 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 3898 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 4348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:31:33,113 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 2161 Invalid, 4348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3898 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:31:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179387 states. [2024-11-09 19:31:35,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179387 to 175446. [2024-11-09 19:31:35,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175446 states, 175445 states have (on average 2.0000854968793638) internal successors, (350905), 175445 states have internal predecessors, (350905), 0 states have call successors, (0), 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 19:31:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175446 states to 175446 states and 350905 transitions. [2024-11-09 19:31:35,834 INFO L78 Accepts]: Start accepts. Automaton has 175446 states and 350905 transitions. Word has length 399 [2024-11-09 19:31:35,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:31:35,834 INFO L471 AbstractCegarLoop]: Abstraction has 175446 states and 350905 transitions. [2024-11-09 19:31:35,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 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 19:31:35,834 INFO L276 IsEmpty]: Start isEmpty. Operand 175446 states and 350905 transitions. [2024-11-09 19:31:35,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-11-09 19:31:35,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:31:35,842 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2024-11-09 19:31:35,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:31:36,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 19:31:36,043 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:31:36,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:31:36,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1544089880, now seen corresponding path program 1 times [2024-11-09 19:31:36,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:31:36,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848785644] [2024-11-09 19:31:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:31:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:31:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:31:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 656 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2024-11-09 19:31:36,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:31:36,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848785644] [2024-11-09 19:31:36,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848785644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:31:36,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:31:36,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:31:36,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936278980] [2024-11-09 19:31:36,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:31:36,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:31:36,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:31:36,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:31:36,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:31:36,249 INFO L87 Difference]: Start difference. First operand 175446 states and 350905 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)