./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init7_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_init7_ground-1.i -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 b5676c3d6dc03d9d7c01548ab66d69c2eb88a4e88b4b03557196f7f055f86c4c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:22:22,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:22:22,367 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:22:22,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:22:22,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:22:22,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:22:22,397 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:22:22,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:22:22,398 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:22:22,398 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:22:22,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:22:22,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:22:22,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:22:22,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:22:22,400 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:22:22,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:22:22,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:22:22,400 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:22:22,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:22:22,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:22:22,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:22:22,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:22:22,405 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:22:22,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:22:22,405 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:22:22,405 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:22:22,406 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:22:22,406 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:22:22,406 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:22:22,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:22:22,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:22:22,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:22:22,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:22:22,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:22:22,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:22:22,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:22:22,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:22:22,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:22:22,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:22:22,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:22:22,410 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:22:22,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:22:22,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5676c3d6dc03d9d7c01548ab66d69c2eb88a4e88b4b03557196f7f055f86c4c [2024-11-16 02:22:22,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:22:22,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:22:22,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:22:22,619 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:22:22,619 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:22:22,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init7_ground-1.i [2024-11-16 02:22:23,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:22:23,998 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:22:23,998 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init7_ground-1.i [2024-11-16 02:22:24,004 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cce8946c/89ec555624df42bdab141e0bf0aed9fa/FLAGe5346bb6e [2024-11-16 02:22:24,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cce8946c/89ec555624df42bdab141e0bf0aed9fa [2024-11-16 02:22:24,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:22:24,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:22:24,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:22:24,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:22:24,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:22:24,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,421 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59116d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24, skipping insertion in model container [2024-11-16 02:22:24,421 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:22:24,615 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/array-examples/standard_init7_ground-1.i[816,829] [2024-11-16 02:22:24,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:22:24,644 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:22:24,654 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/array-examples/standard_init7_ground-1.i[816,829] [2024-11-16 02:22:24,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:22:24,681 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:22:24,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24 WrapperNode [2024-11-16 02:22:24,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:22:24,682 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:22:24,682 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:22:24,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:22:24,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,704 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2024-11-16 02:22:24,705 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:22:24,705 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:22:24,705 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:22:24,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:22:24,712 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,713 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,715 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,727 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-11-16 02:22:24,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,728 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,731 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,732 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:22:24,737 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:22:24,737 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:22:24,737 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:22:24,738 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (1/1) ... [2024-11-16 02:22:24,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:22:24,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:24,760 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:22:24,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:22:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:22:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:22:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:22:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:22:24,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:22:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:22:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:22:24,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:22:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:22:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:22:24,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:22:24,848 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:22:24,850 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:22:24,945 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L15: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2024-11-16 02:22:24,950 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-16 02:22:24,951 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:22:24,962 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:22:24,962 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:22:24,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:22:24 BoogieIcfgContainer [2024-11-16 02:22:24,963 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:22:24,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:22:24,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:22:24,968 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:22:24,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:22:24" (1/3) ... [2024-11-16 02:22:24,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f08347f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:22:24, skipping insertion in model container [2024-11-16 02:22:24,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:22:24" (2/3) ... [2024-11-16 02:22:24,969 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f08347f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:22:24, skipping insertion in model container [2024-11-16 02:22:24,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:22:24" (3/3) ... [2024-11-16 02:22:24,970 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-1.i [2024-11-16 02:22:24,983 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:22:24,983 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:22:25,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:22:25,033 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;@38c9b876, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:22:25,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:22:25,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 02:22:25,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:25,042 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] [2024-11-16 02:22:25,042 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:25,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash -75749293, now seen corresponding path program 1 times [2024-11-16 02:22:25,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:25,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360367036] [2024-11-16 02:22:25,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:25,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:25,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:22:25,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:25,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360367036] [2024-11-16 02:22:25,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360367036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:22:25,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:22:25,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:22:25,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328052246] [2024-11-16 02:22:25,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:22:25,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:22:25,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:22:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:22:25,194 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.5454545454545454) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:25,206 INFO L93 Difference]: Finished difference Result 65 states and 95 transitions. [2024-11-16 02:22:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:22:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-16 02:22:25,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:25,217 INFO L225 Difference]: With dead ends: 65 [2024-11-16 02:22:25,217 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 02:22:25,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:22:25,222 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:25,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:22:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 02:22:25,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-16 02:22:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-16 02:22:25,244 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 21 [2024-11-16 02:22:25,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:25,244 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-16 02:22:25,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-16 02:22:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-16 02:22:25,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:25,245 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] [2024-11-16 02:22:25,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:22:25,246 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:25,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash 562674048, now seen corresponding path program 1 times [2024-11-16 02:22:25,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:25,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529177021] [2024-11-16 02:22:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:25,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:22:25,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:25,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529177021] [2024-11-16 02:22:25,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529177021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:22:25,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:22:25,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:22:25,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550320808] [2024-11-16 02:22:25,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:22:25,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:22:25,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:22:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:22:25,352 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:25,402 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2024-11-16 02:22:25,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:22:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2024-11-16 02:22:25,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:25,403 INFO L225 Difference]: With dead ends: 70 [2024-11-16 02:22:25,403 INFO L226 Difference]: Without dead ends: 44 [2024-11-16 02:22:25,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:22:25,405 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:25,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:22:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-16 02:22:25,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-16 02:22:25,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.186046511627907) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2024-11-16 02:22:25,432 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 28 [2024-11-16 02:22:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:25,432 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2024-11-16 02:22:25,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2024-11-16 02:22:25,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 02:22:25,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:25,434 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:22:25,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:22:25,434 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:25,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash 162677119, now seen corresponding path program 1 times [2024-11-16 02:22:25,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:25,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941821101] [2024-11-16 02:22:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:22:25,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:25,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941821101] [2024-11-16 02:22:25,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941821101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:22:25,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151144944] [2024-11-16 02:22:25,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:25,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:25,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:25,566 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:22:25,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:22:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:25,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:22:25,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:22:25,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:22:25,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:22:25,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-16 02:22:25,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151144944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:22:25,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:22:25,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:22:25,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891351850] [2024-11-16 02:22:25,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:22:25,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:22:25,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:25,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:22:25,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:22:25,719 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:25,820 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2024-11-16 02:22:25,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:22:25,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 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 42 [2024-11-16 02:22:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:25,821 INFO L225 Difference]: With dead ends: 124 [2024-11-16 02:22:25,822 INFO L226 Difference]: Without dead ends: 86 [2024-11-16 02:22:25,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:22:25,823 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:25,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 76 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:22:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-16 02:22:25,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-16 02:22:25,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 85 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2024-11-16 02:22:25,837 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 42 [2024-11-16 02:22:25,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:25,837 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2024-11-16 02:22:25,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:25,838 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2024-11-16 02:22:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 02:22:25,840 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:25,840 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:22:25,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:22:26,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:26,041 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:26,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2066127868, now seen corresponding path program 2 times [2024-11-16 02:22:26,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:26,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801221554] [2024-11-16 02:22:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:26,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-16 02:22:26,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:26,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801221554] [2024-11-16 02:22:26,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801221554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:22:26,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822743954] [2024-11-16 02:22:26,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:22:26,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:26,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:26,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:22:26,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:22:26,407 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:22:26,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:22:26,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:22:26,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:22:26,436 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-16 02:22:26,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:22:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-16 02:22:26,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822743954] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:22:26,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:22:26,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 02:22:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096715995] [2024-11-16 02:22:26,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:22:26,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 02:22:26,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 02:22:26,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:22:26,509 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:26,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:26,691 INFO L93 Difference]: Finished difference Result 244 states and 299 transitions. [2024-11-16 02:22:26,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 02:22:26,692 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 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 84 [2024-11-16 02:22:26,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:26,693 INFO L225 Difference]: With dead ends: 244 [2024-11-16 02:22:26,693 INFO L226 Difference]: Without dead ends: 170 [2024-11-16 02:22:26,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 02:22:26,694 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 102 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:26,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 143 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:22:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-16 02:22:26,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-16 02:22:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.047337278106509) internal successors, (177), 169 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 177 transitions. [2024-11-16 02:22:26,713 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 177 transitions. Word has length 84 [2024-11-16 02:22:26,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:26,714 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 177 transitions. [2024-11-16 02:22:26,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:26,714 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 177 transitions. [2024-11-16 02:22:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-16 02:22:26,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:26,718 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:22:26,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:22:26,919 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,SelfDestructingSolverStorable3 [2024-11-16 02:22:26,919 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:26,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:26,920 INFO L85 PathProgramCache]: Analyzing trace with hash 268901430, now seen corresponding path program 3 times [2024-11-16 02:22:26,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:26,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889588677] [2024-11-16 02:22:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:26,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-11-16 02:22:27,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:27,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889588677] [2024-11-16 02:22:27,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889588677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:22:27,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240544693] [2024-11-16 02:22:27,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:22:27,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:27,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:27,359 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:22:27,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:22:35,067 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-16 02:22:35,067 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:22:35,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:22:35,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:22:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-11-16 02:22:35,131 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:22:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2024-11-16 02:22:35,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240544693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:22:35,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:22:35,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-16 02:22:35,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080468313] [2024-11-16 02:22:35,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:22:35,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:22:35,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:35,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:22:35,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:22:35,361 INFO L87 Difference]: Start difference. First operand 170 states and 177 transitions. Second operand has 25 states, 25 states have (on average 4.28) internal successors, (107), 25 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) [2024-11-16 02:22:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:35,699 INFO L93 Difference]: Finished difference Result 484 states and 581 transitions. [2024-11-16 02:22:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 02:22:35,700 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.28) internal successors, (107), 25 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 168 [2024-11-16 02:22:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:35,701 INFO L225 Difference]: With dead ends: 484 [2024-11-16 02:22:35,701 INFO L226 Difference]: Without dead ends: 338 [2024-11-16 02:22:35,702 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:22:35,703 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 368 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:35,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 218 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:22:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-16 02:22:35,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2024-11-16 02:22:35,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.0237388724035608) internal successors, (345), 337 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 345 transitions. [2024-11-16 02:22:35,736 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 345 transitions. Word has length 168 [2024-11-16 02:22:35,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:35,736 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 345 transitions. [2024-11-16 02:22:35,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.28) internal successors, (107), 25 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) [2024-11-16 02:22:35,737 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 345 transitions. [2024-11-16 02:22:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2024-11-16 02:22:35,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:35,740 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:22:35,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 02:22:35,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:35,942 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:35,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:35,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1492514390, now seen corresponding path program 4 times [2024-11-16 02:22:35,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:35,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360480438] [2024-11-16 02:22:35,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:35,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:36,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3542 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 3036 trivial. 0 not checked. [2024-11-16 02:22:36,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:36,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360480438] [2024-11-16 02:22:36,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360480438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:22:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870532871] [2024-11-16 02:22:36,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:22:36,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:36,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:36,999 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:22:37,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:22:37,213 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:22:37,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:22:37,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 02:22:37,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:22:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3542 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 3036 trivial. 0 not checked. [2024-11-16 02:22:37,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:22:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3542 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 3036 trivial. 0 not checked. [2024-11-16 02:22:37,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870532871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:22:37,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:22:37,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-16 02:22:37,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571346968] [2024-11-16 02:22:37,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:22:37,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 02:22:37,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:22:37,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 02:22:37,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:22:37,930 INFO L87 Difference]: Start difference. First operand 338 states and 345 transitions. Second operand has 49 states, 49 states have (on average 2.6122448979591835) internal successors, (128), 49 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) [2024-11-16 02:22:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:22:38,670 INFO L93 Difference]: Finished difference Result 964 states and 1145 transitions. [2024-11-16 02:22:38,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-16 02:22:38,673 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.6122448979591835) internal successors, (128), 49 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 336 [2024-11-16 02:22:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:22:38,675 INFO L225 Difference]: With dead ends: 964 [2024-11-16 02:22:38,675 INFO L226 Difference]: Without dead ends: 674 [2024-11-16 02:22:38,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:22:38,677 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 768 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 913 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 02:22:38,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 415 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [913 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 02:22:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-16 02:22:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2024-11-16 02:22:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 1.011887072808321) internal successors, (681), 673 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:22:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 681 transitions. [2024-11-16 02:22:38,692 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 681 transitions. Word has length 336 [2024-11-16 02:22:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:22:38,693 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 681 transitions. [2024-11-16 02:22:38,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.6122448979591835) internal successors, (128), 49 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) [2024-11-16 02:22:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 681 transitions. [2024-11-16 02:22:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2024-11-16 02:22:38,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:22:38,701 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:22:38,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 02:22:38,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:38,902 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:22:38,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:22:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1091410066, now seen corresponding path program 5 times [2024-11-16 02:22:38,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:22:38,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307703261] [2024-11-16 02:22:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:22:38,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:22:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:22:41,867 INFO L134 CoverageAnalysis]: Checked inductivity of 15134 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 12972 trivial. 0 not checked. [2024-11-16 02:22:41,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:22:41,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307703261] [2024-11-16 02:22:41,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307703261] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:22:41,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141562788] [2024-11-16 02:22:41,868 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:22:41,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:22:41,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:22:41,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:22:41,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process