./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i --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/array-lopstr16/flag_loopdep_simple.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 2e1c46549da470f14361a9b2a5fb79d079bbffb4006138f4fef05b9b152f9be7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 18:21:43,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 18:21:43,697 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 18:21:43,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 18:21:43,701 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 18:21:43,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 18:21:43,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 18:21:43,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 18:21:43,723 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 18:21:43,723 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 18:21:43,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 18:21:43,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 18:21:43,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 18:21:43,729 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 18:21:43,729 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 18:21:43,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 18:21:43,730 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 18:21:43,730 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 18:21:43,730 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 18:21:43,730 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 18:21:43,731 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 18:21:43,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 18:21:43,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 18:21:43,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 18:21:43,736 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 18:21:43,737 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 18:21:43,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 18:21:43,737 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 18:21:43,737 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 18:21:43,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 18:21:43,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 18:21:43,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 18:21:43,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:21:43,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 18:21:43,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 18:21:43,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 18:21:43,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 18:21:43,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 18:21:43,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 18:21:43,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 18:21:43,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 18:21:43,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 18:21:43,742 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e1c46549da470f14361a9b2a5fb79d079bbffb4006138f4fef05b9b152f9be7 [2024-11-09 18:21:44,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 18:21:44,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 18:21:44,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 18:21:44,039 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 18:21:44,040 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 18:21:44,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i [2024-11-09 18:21:45,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 18:21:45,676 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 18:21:45,677 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-lopstr16/flag_loopdep_simple.i [2024-11-09 18:21:45,684 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91be80145/72ce152208d94513a8160a677f1a8075/FLAGed86337ff [2024-11-09 18:21:46,070 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91be80145/72ce152208d94513a8160a677f1a8075 [2024-11-09 18:21:46,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 18:21:46,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 18:21:46,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 18:21:46,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 18:21:46,084 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 18:21:46,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab18ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46, skipping insertion in model container [2024-11-09 18:21:46,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 18:21:46,324 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-lopstr16/flag_loopdep_simple.i[812,825] [2024-11-09 18:21:46,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:21:46,373 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 18:21:46,412 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-lopstr16/flag_loopdep_simple.i[812,825] [2024-11-09 18:21:46,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 18:21:46,444 INFO L204 MainTranslator]: Completed translation [2024-11-09 18:21:46,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46 WrapperNode [2024-11-09 18:21:46,446 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 18:21:46,447 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 18:21:46,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 18:21:46,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 18:21:46,456 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,481 INFO L138 Inliner]: procedures = 17, calls = 14, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2024-11-09 18:21:46,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 18:21:46,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 18:21:46,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 18:21:46,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 18:21:46,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,494 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,514 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 18:21:46,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,515 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,521 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,522 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,523 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 18:21:46,528 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 18:21:46,528 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 18:21:46,528 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 18:21:46,529 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (1/1) ... [2024-11-09 18:21:46,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 18:21:46,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:46,568 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 18:21:46,575 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 18:21:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 18:21:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 18:21:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 18:21:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 18:21:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 18:21:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 18:21:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 18:21:46,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 18:21:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 18:21:46,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 18:21:46,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 18:21:46,718 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 18:21:46,720 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 18:21:46,874 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L29: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset; [2024-11-09 18:21:46,889 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-09 18:21:46,889 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 18:21:46,905 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 18:21:46,906 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 18:21:46,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:21:46 BoogieIcfgContainer [2024-11-09 18:21:46,907 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 18:21:46,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 18:21:46,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 18:21:46,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 18:21:46,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:21:46" (1/3) ... [2024-11-09 18:21:46,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511bc8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:21:46, skipping insertion in model container [2024-11-09 18:21:46,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:21:46" (2/3) ... [2024-11-09 18:21:46,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511bc8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:21:46, skipping insertion in model container [2024-11-09 18:21:46,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 06:21:46" (3/3) ... [2024-11-09 18:21:46,918 INFO L112 eAbstractionObserver]: Analyzing ICFG flag_loopdep_simple.i [2024-11-09 18:21:46,938 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 18:21:46,939 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 18:21:47,004 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 18:21:47,013 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;@2264ed3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 18:21:47,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 18:21:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 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 18:21:47,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 18:21:47,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:47,024 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:47,025 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:47,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash -787067347, now seen corresponding path program 1 times [2024-11-09 18:21:47,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579895840] [2024-11-09 18:21:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:47,197 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 18:21:47,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:47,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579895840] [2024-11-09 18:21:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579895840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:21:47,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:21:47,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 18:21:47,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416322883] [2024-11-09 18:21:47,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:21:47,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 18:21:47,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 18:21:47,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 18:21:47,224 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 18:21:47,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:47,236 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-11-09 18:21:47,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 18:21:47,237 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2024-11-09 18:21:47,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:47,243 INFO L225 Difference]: With dead ends: 43 [2024-11-09 18:21:47,243 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 18:21:47,246 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 [2024-11-09 18:21:47,249 INFO L432 NwaCegarLoop]: 27 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, 27 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 [2024-11-09 18:21:47,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:21:47,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 18:21:47,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 18:21:47,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 18:21:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2024-11-09 18:21:47,278 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2024-11-09 18:21:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:47,278 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2024-11-09 18:21:47,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 18:21:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2024-11-09 18:21:47,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 18:21:47,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:47,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:47,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 18:21:47,280 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:47,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash 439765458, now seen corresponding path program 1 times [2024-11-09 18:21:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:47,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607522410] [2024-11-09 18:21:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:47,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:47,441 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 18:21:47,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:47,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607522410] [2024-11-09 18:21:47,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607522410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:21:47,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:21:47,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:21:47,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570913594] [2024-11-09 18:21:47,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:21:47,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:21:47,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:21:47,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:21:47,445 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 18:21:47,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:47,459 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-09 18:21:47,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:21:47,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2024-11-09 18:21:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:47,461 INFO L225 Difference]: With dead ends: 36 [2024-11-09 18:21:47,461 INFO L226 Difference]: Without dead ends: 21 [2024-11-09 18:21:47,461 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 18:21:47,463 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:47,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:21:47,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-09 18:21:47,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-09 18:21:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 18:21:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-09 18:21:47,470 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2024-11-09 18:21:47,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:47,470 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-09 18:21:47,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 18:21:47,470 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-09 18:21:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 18:21:47,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:47,471 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:47,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 18:21:47,471 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:47,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:47,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1587214479, now seen corresponding path program 1 times [2024-11-09 18:21:47,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:47,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707376917] [2024-11-09 18:21:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:47,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:21:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:47,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707376917] [2024-11-09 18:21:47,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707376917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:21:47,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:21:47,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:21:47,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037850937] [2024-11-09 18:21:47,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:21:47,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:21:47,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:47,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:21:47,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:21:47,606 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 18:21:47,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:47,648 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2024-11-09 18:21:47,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:21:47,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 18:21:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:47,650 INFO L225 Difference]: With dead ends: 44 [2024-11-09 18:21:47,651 INFO L226 Difference]: Without dead ends: 34 [2024-11-09 18:21:47,652 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 18:21:47,653 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:47,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 32 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:21:47,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-09 18:21:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 23. [2024-11-09 18:21:47,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 18:21:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-09 18:21:47,664 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2024-11-09 18:21:47,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:47,665 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-09 18:21:47,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 18:21:47,666 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-09 18:21:47,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:21:47,668 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:47,668 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:47,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 18:21:47,668 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:47,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:47,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1861526323, now seen corresponding path program 1 times [2024-11-09 18:21:47,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:47,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000776222] [2024-11-09 18:21:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:47,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:21:47,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000776222] [2024-11-09 18:21:47,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000776222] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503278726] [2024-11-09 18:21:47,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:47,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:47,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:47,781 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 18:21:47,783 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 18:21:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:47,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 18:21:47,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:21:47,923 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 18:21:47,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503278726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:21:47,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 18:21:47,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-09 18:21:47,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648595937] [2024-11-09 18:21:47,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:21:47,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:21:47,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:21:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:21:47,926 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 18:21:47,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:47,950 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2024-11-09 18:21:47,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:21:47,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 20 [2024-11-09 18:21:47,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:47,952 INFO L225 Difference]: With dead ends: 41 [2024-11-09 18:21:47,952 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 18:21:47,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 18:21:47,954 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:47,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 45 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:21:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 18:21:47,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 18:21:47,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 18:21:47,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-09 18:21:47,965 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 20 [2024-11-09 18:21:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:47,965 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-09 18:21:47,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 18:21:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-09 18:21:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 18:21:47,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:47,966 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:47,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:48,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:48,172 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:48,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash 64574964, now seen corresponding path program 1 times [2024-11-09 18:21:48,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:48,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718825640] [2024-11-09 18:21:48,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:48,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:48,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:21:48,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:48,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718825640] [2024-11-09 18:21:48,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718825640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:48,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979448147] [2024-11-09 18:21:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:48,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:48,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:48,247 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 18:21:48,250 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 18:21:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:48,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 18:21:48,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:48,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:21:48,400 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 18:21:48,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979448147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:48,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:48,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-09 18:21:48,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134200324] [2024-11-09 18:21:48,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:48,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 18:21:48,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:48,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 18:21:48,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:21:48,456 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 18:21:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:48,548 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2024-11-09 18:21:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 18:21:48,548 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 20 [2024-11-09 18:21:48,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:48,549 INFO L225 Difference]: With dead ends: 70 [2024-11-09 18:21:48,549 INFO L226 Difference]: Without dead ends: 53 [2024-11-09 18:21:48,550 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-09 18:21:48,551 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:48,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 53 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:21:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-09 18:21:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2024-11-09 18:21:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 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 18:21:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2024-11-09 18:21:48,557 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 20 [2024-11-09 18:21:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:48,558 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2024-11-09 18:21:48,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 18:21:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2024-11-09 18:21:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-09 18:21:48,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:48,559 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:48,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:48,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:48,760 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:48,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:48,765 INFO L85 PathProgramCache]: Analyzing trace with hash -752783276, now seen corresponding path program 2 times [2024-11-09 18:21:48,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:48,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099548917] [2024-11-09 18:21:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:48,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 18:21:48,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:48,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099548917] [2024-11-09 18:21:48,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099548917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:48,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123166744] [2024-11-09 18:21:48,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:21:48,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:48,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:48,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:48,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 18:21:48,954 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:21:48,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:48,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 18:21:48,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:21:49,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:49,209 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 18:21:49,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123166744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:49,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-09 18:21:49,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31948212] [2024-11-09 18:21:49,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:49,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 18:21:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:49,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 18:21:49,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:21:49,212 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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) [2024-11-09 18:21:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:49,291 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2024-11-09 18:21:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 18:21:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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) Word has length 30 [2024-11-09 18:21:49,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:49,293 INFO L225 Difference]: With dead ends: 99 [2024-11-09 18:21:49,293 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 18:21:49,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-09 18:21:49,295 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 38 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:49,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 83 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:21:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 18:21:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 49. [2024-11-09 18:21:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 48 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:21:49,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2024-11-09 18:21:49,310 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 30 [2024-11-09 18:21:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:49,310 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2024-11-09 18:21:49,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 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) [2024-11-09 18:21:49,312 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2024-11-09 18:21:49,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 18:21:49,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:49,313 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:49,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 18:21:49,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:49,515 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:49,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:49,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1471706577, now seen corresponding path program 3 times [2024-11-09 18:21:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:49,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57427473] [2024-11-09 18:21:49,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:49,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 18:21:49,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:49,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57427473] [2024-11-09 18:21:49,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57427473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:49,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972047357] [2024-11-09 18:21:49,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:21:49,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:49,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:49,930 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) [2024-11-09 18:21:49,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 18:21:50,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 18:21:50,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:50,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 18:21:50,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:50,079 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 18:21:50,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 18:21:50,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972047357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:50,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:50,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 21 [2024-11-09 18:21:50,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429464928] [2024-11-09 18:21:50,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:50,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 18:21:50,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 18:21:50,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:21:50,179 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 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 18:21:50,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:50,319 INFO L93 Difference]: Finished difference Result 161 states and 179 transitions. [2024-11-09 18:21:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 18:21:50,319 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 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 46 [2024-11-09 18:21:50,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:50,321 INFO L225 Difference]: With dead ends: 161 [2024-11-09 18:21:50,321 INFO L226 Difference]: Without dead ends: 136 [2024-11-09 18:21:50,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:21:50,323 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 193 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:50,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 131 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:21:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-09 18:21:50,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 71. [2024-11-09 18:21:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0571428571428572) internal successors, (74), 70 states have internal predecessors, (74), 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 18:21:50,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2024-11-09 18:21:50,336 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 46 [2024-11-09 18:21:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:50,336 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2024-11-09 18:21:50,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 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 18:21:50,337 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2024-11-09 18:21:50,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 18:21:50,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:50,338 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:50,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:50,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:50,539 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:50,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash -791458945, now seen corresponding path program 4 times [2024-11-09 18:21:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:50,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604507954] [2024-11-09 18:21:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:50,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:50,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 18:21:50,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:50,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604507954] [2024-11-09 18:21:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604507954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523651340] [2024-11-09 18:21:50,772 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:21:50,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:50,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:50,774 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) [2024-11-09 18:21:50,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 18:21:50,894 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:21:50,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:50,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 18:21:50,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 18:21:50,988 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 18:21:51,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523651340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:51,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:51,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2024-11-09 18:21:51,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169359842] [2024-11-09 18:21:51,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:51,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 18:21:51,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:51,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 18:21:51,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:21:51,192 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 states have internal predecessors, (87), 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 18:21:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:51,394 INFO L93 Difference]: Finished difference Result 276 states and 307 transitions. [2024-11-09 18:21:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 18:21:51,394 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-09 18:21:51,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:51,398 INFO L225 Difference]: With dead ends: 276 [2024-11-09 18:21:51,398 INFO L226 Difference]: Without dead ends: 266 [2024-11-09 18:21:51,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2024-11-09 18:21:51,399 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 382 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:51,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 192 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 18:21:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-09 18:21:51,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 111. [2024-11-09 18:21:51,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 110 states have internal predecessors, (114), 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 18:21:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2024-11-09 18:21:51,421 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 68 [2024-11-09 18:21:51,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:51,422 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2024-11-09 18:21:51,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.142857142857143) internal successors, (87), 21 states have internal predecessors, (87), 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 18:21:51,423 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2024-11-09 18:21:51,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 18:21:51,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:51,426 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:51,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 18:21:51,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:51,627 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:51,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash -786769123, now seen corresponding path program 5 times [2024-11-09 18:21:51,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:51,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728845978] [2024-11-09 18:21:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:51,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 18:21:52,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728845978] [2024-11-09 18:21:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728845978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242063350] [2024-11-09 18:21:52,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:21:52,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:52,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:52,161 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:52,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 18:21:52,439 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-09 18:21:52,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:52,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 18:21:52,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 18:21:52,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 18:21:53,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242063350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:53,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:53,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-09 18:21:53,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207161171] [2024-11-09 18:21:53,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:53,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-09 18:21:53,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-09 18:21:53,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 18:21:53,208 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 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 18:21:53,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:53,697 INFO L93 Difference]: Finished difference Result 536 states and 597 transitions. [2024-11-09 18:21:53,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 18:21:53,697 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 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 108 [2024-11-09 18:21:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:53,700 INFO L225 Difference]: With dead ends: 536 [2024-11-09 18:21:53,700 INFO L226 Difference]: Without dead ends: 526 [2024-11-09 18:21:53,701 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 18:21:53,702 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1399 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:53,702 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 373 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:21:53,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-09 18:21:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 191. [2024-11-09 18:21:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.0210526315789474) internal successors, (194), 190 states have internal predecessors, (194), 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 18:21:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 194 transitions. [2024-11-09 18:21:53,722 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 194 transitions. Word has length 108 [2024-11-09 18:21:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:53,723 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 194 transitions. [2024-11-09 18:21:53,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.073170731707317) internal successors, (167), 41 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 18:21:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 194 transitions. [2024-11-09 18:21:53,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-09 18:21:53,726 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:53,726 INFO L215 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:53,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 18:21:53,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:53,927 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:53,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:53,928 INFO L85 PathProgramCache]: Analyzing trace with hash 762746969, now seen corresponding path program 6 times [2024-11-09 18:21:53,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:53,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568402325] [2024-11-09 18:21:53,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:53,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3020 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-09 18:21:55,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:55,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568402325] [2024-11-09 18:21:55,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568402325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:55,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129298429] [2024-11-09 18:21:55,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 18:21:55,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:55,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:55,387 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:55,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 18:21:55,483 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 18:21:55,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:21:55,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 18:21:55,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3020 backedges. 0 proven. 113 refuted. 0 times theorem prover too weak. 2907 trivial. 0 not checked. [2024-11-09 18:21:56,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:56,494 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:21:56,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 11 [2024-11-09 18:21:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3020 backedges. 37 proven. 76 refuted. 0 times theorem prover too weak. 2907 trivial. 0 not checked. [2024-11-09 18:21:56,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129298429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:56,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:56,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 8, 7] total 50 [2024-11-09 18:21:56,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120463769] [2024-11-09 18:21:56,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:56,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-09 18:21:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:56,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-09 18:21:56,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=1521, Unknown=0, NotChecked=0, Total=2450 [2024-11-09 18:21:56,509 INFO L87 Difference]: Start difference. First operand 191 states and 194 transitions. Second operand has 50 states, 50 states have (on average 3.92) internal successors, (196), 50 states have internal predecessors, (196), 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 18:21:58,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:58,017 INFO L93 Difference]: Finished difference Result 555 states and 600 transitions. [2024-11-09 18:21:58,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 18:21:58,018 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.92) internal successors, (196), 50 states have internal predecessors, (196), 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 188 [2024-11-09 18:21:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:58,021 INFO L225 Difference]: With dead ends: 555 [2024-11-09 18:21:58,021 INFO L226 Difference]: Without dead ends: 545 [2024-11-09 18:21:58,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 366 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2771, Invalid=5239, Unknown=0, NotChecked=0, Total=8010 [2024-11-09 18:21:58,025 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1666 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:58,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 472 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 18:21:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-09 18:21:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 199. [2024-11-09 18:21:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.0252525252525253) internal successors, (203), 198 states have internal predecessors, (203), 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 18:21:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 203 transitions. [2024-11-09 18:21:58,050 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 203 transitions. Word has length 188 [2024-11-09 18:21:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:58,052 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 203 transitions. [2024-11-09 18:21:58,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.92) internal successors, (196), 50 states have internal predecessors, (196), 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 18:21:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 203 transitions. [2024-11-09 18:21:58,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-09 18:21:58,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:58,058 INFO L215 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 12, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:58,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 18:21:58,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:58,259 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:58,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash 686905906, now seen corresponding path program 1 times [2024-11-09 18:21:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:58,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797487692] [2024-11-09 18:21:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:58,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3174 trivial. 0 not checked. [2024-11-09 18:21:58,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:58,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797487692] [2024-11-09 18:21:58,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797487692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 18:21:58,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 18:21:58,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 18:21:58,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641873903] [2024-11-09 18:21:58,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 18:21:58,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 18:21:58,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:58,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 18:21:58,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 18:21:58,374 INFO L87 Difference]: Start difference. First operand 199 states and 203 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:21:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:58,384 INFO L93 Difference]: Finished difference Result 208 states and 213 transitions. [2024-11-09 18:21:58,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 18:21:58,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-11-09 18:21:58,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:58,386 INFO L225 Difference]: With dead ends: 208 [2024-11-09 18:21:58,387 INFO L226 Difference]: Without dead ends: 199 [2024-11-09 18:21:58,387 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 18:21:58,388 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:58,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:21:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-09 18:21:58,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-11-09 18:21:58,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.0151515151515151) internal successors, (201), 198 states have internal predecessors, (201), 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 18:21:58,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2024-11-09 18:21:58,398 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 196 [2024-11-09 18:21:58,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:58,398 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2024-11-09 18:21:58,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:21:58,398 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2024-11-09 18:21:58,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-09 18:21:58,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:58,400 INFO L215 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 12, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:58,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 18:21:58,401 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:58,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash 371388921, now seen corresponding path program 1 times [2024-11-09 18:21:58,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:58,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919288580] [2024-11-09 18:21:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:58,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-11-09 18:21:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:21:58,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919288580] [2024-11-09 18:21:58,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919288580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:21:58,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880814615] [2024-11-09 18:21:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:58,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:21:58,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:21:58,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:21:58,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 18:21:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:21:58,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 18:21:58,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:21:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-11-09 18:21:59,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:21:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3178 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-11-09 18:21:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880814615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:21:59,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:21:59,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2024-11-09 18:21:59,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618439301] [2024-11-09 18:21:59,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:21:59,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 18:21:59,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:21:59,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 18:21:59,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=769, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 18:21:59,645 INFO L87 Difference]: Start difference. First operand 199 states and 201 transitions. Second operand has 38 states, 38 states have (on average 2.4210526315789473) internal successors, (92), 38 states have internal predecessors, (92), 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 18:21:59,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:21:59,680 INFO L93 Difference]: Finished difference Result 398 states and 414 transitions. [2024-11-09 18:21:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-09 18:21:59,680 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.4210526315789473) internal successors, (92), 38 states have internal predecessors, (92), 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 198 [2024-11-09 18:21:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:21:59,682 INFO L225 Difference]: With dead ends: 398 [2024-11-09 18:21:59,682 INFO L226 Difference]: Without dead ends: 225 [2024-11-09 18:21:59,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=637, Invalid=769, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 18:21:59,683 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:21:59,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:21:59,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-09 18:21:59,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2024-11-09 18:21:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.0133928571428572) internal successors, (227), 224 states have internal predecessors, (227), 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 18:21:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2024-11-09 18:21:59,697 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 198 [2024-11-09 18:21:59,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:21:59,697 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2024-11-09 18:21:59,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.4210526315789473) internal successors, (92), 38 states have internal predecessors, (92), 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 18:21:59,697 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2024-11-09 18:21:59,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-09 18:21:59,699 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:21:59,699 INFO L215 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 25, 24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:21:59,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 18:21:59,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 18:21:59,901 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:21:59,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:21:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash -9578100, now seen corresponding path program 2 times [2024-11-09 18:21:59,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:21:59,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084755834] [2024-11-09 18:21:59,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:21:59,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:21:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3646 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-11-09 18:22:00,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:00,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084755834] [2024-11-09 18:22:00,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084755834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:00,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492719332] [2024-11-09 18:22:00,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 18:22:00,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:00,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:00,835 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:00,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 18:22:00,994 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 18:22:00,995 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:00,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 18:22:01,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3646 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-11-09 18:22:01,963 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3646 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-11-09 18:22:03,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492719332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:03,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:03,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 77 [2024-11-09 18:22:03,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621383066] [2024-11-09 18:22:03,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:03,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-09 18:22:03,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:03,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-09 18:22:03,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2626, Invalid=3226, Unknown=0, NotChecked=0, Total=5852 [2024-11-09 18:22:03,304 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand has 77 states, 77 states have (on average 2.207792207792208) internal successors, (170), 77 states have internal predecessors, (170), 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 18:22:03,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:03,376 INFO L93 Difference]: Finished difference Result 450 states and 479 transitions. [2024-11-09 18:22:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-09 18:22:03,377 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.207792207792208) internal successors, (170), 77 states have internal predecessors, (170), 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 224 [2024-11-09 18:22:03,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:03,379 INFO L225 Difference]: With dead ends: 450 [2024-11-09 18:22:03,379 INFO L226 Difference]: Without dead ends: 277 [2024-11-09 18:22:03,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2626, Invalid=3226, Unknown=0, NotChecked=0, Total=5852 [2024-11-09 18:22:03,382 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:03,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 182 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 18:22:03,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-09 18:22:03,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2024-11-09 18:22:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.0108695652173914) internal successors, (279), 276 states have internal predecessors, (279), 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 18:22:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 279 transitions. [2024-11-09 18:22:03,395 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 279 transitions. Word has length 224 [2024-11-09 18:22:03,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:03,396 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 279 transitions. [2024-11-09 18:22:03,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.207792207792208) internal successors, (170), 77 states have internal predecessors, (170), 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 18:22:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 279 transitions. [2024-11-09 18:22:03,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-09 18:22:03,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:03,399 INFO L215 NwaCegarLoop]: trace histogram [51, 50, 40, 39, 39, 39, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:03,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 18:22:03,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 18:22:03,600 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:03,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1460401010, now seen corresponding path program 3 times [2024-11-09 18:22:03,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:03,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467398784] [2024-11-09 18:22:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:03,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5596 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 3046 trivial. 0 not checked. [2024-11-09 18:22:06,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:06,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467398784] [2024-11-09 18:22:06,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467398784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:06,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312080862] [2024-11-09 18:22:06,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 18:22:06,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:06,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:06,170 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:06,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 18:22:06,344 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-09 18:22:06,344 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:06,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 18:22:06,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5596 backedges. 0 proven. 271 refuted. 0 times theorem prover too weak. 5325 trivial. 0 not checked. [2024-11-09 18:22:07,061 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:07,405 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 18:22:07,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 11 [2024-11-09 18:22:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5596 backedges. 37 proven. 234 refuted. 0 times theorem prover too weak. 5325 trivial. 0 not checked. [2024-11-09 18:22:07,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312080862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:07,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:07,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 10, 9] total 67 [2024-11-09 18:22:07,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562851985] [2024-11-09 18:22:07,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:07,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-09 18:22:07,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:07,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-09 18:22:07,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1430, Invalid=2992, Unknown=0, NotChecked=0, Total=4422 [2024-11-09 18:22:07,466 INFO L87 Difference]: Start difference. First operand 277 states and 279 transitions. Second operand has 67 states, 67 states have (on average 2.611940298507463) internal successors, (175), 67 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:09,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:09,080 INFO L93 Difference]: Finished difference Result 460 states and 465 transitions. [2024-11-09 18:22:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-09 18:22:09,081 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.611940298507463) internal successors, (175), 67 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2024-11-09 18:22:09,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:09,082 INFO L225 Difference]: With dead ends: 460 [2024-11-09 18:22:09,082 INFO L226 Difference]: Without dead ends: 287 [2024-11-09 18:22:09,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 537 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4202, Invalid=10078, Unknown=0, NotChecked=0, Total=14280 [2024-11-09 18:22:09,085 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:09,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 256 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 18:22:09,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-09 18:22:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2024-11-09 18:22:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.0105633802816902) internal successors, (287), 284 states have internal predecessors, (287), 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 18:22:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 287 transitions. [2024-11-09 18:22:09,103 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 287 transitions. Word has length 276 [2024-11-09 18:22:09,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:09,104 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 287 transitions. [2024-11-09 18:22:09,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.611940298507463) internal successors, (175), 67 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 18:22:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 287 transitions. [2024-11-09 18:22:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-11-09 18:22:09,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:09,108 INFO L215 NwaCegarLoop]: trace histogram [52, 51, 40, 39, 39, 39, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:09,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 18:22:09,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 18:22:09,309 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:09,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:09,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1701326546, now seen corresponding path program 4 times [2024-11-09 18:22:09,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:09,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672915962] [2024-11-09 18:22:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:09,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5708 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 3056 trivial. 0 not checked. [2024-11-09 18:22:12,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:12,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672915962] [2024-11-09 18:22:12,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672915962] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:12,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754660910] [2024-11-09 18:22:12,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 18:22:12,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:12,042 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:12,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 18:22:12,269 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 18:22:12,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 18:22:12,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 18:22:12,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 18:22:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5708 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2024-11-09 18:22:13,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 18:22:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5708 backedges. 0 proven. 3042 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2024-11-09 18:22:16,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754660910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 18:22:16,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 18:22:16,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 42, 42] total 134 [2024-11-09 18:22:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806765808] [2024-11-09 18:22:16,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 18:22:16,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-11-09 18:22:16,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 18:22:16,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-11-09 18:22:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4751, Invalid=13071, Unknown=0, NotChecked=0, Total=17822 [2024-11-09 18:22:16,210 INFO L87 Difference]: Start difference. First operand 285 states and 287 transitions. Second operand has 134 states, 134 states have (on average 3.3134328358208953) internal successors, (444), 134 states have internal predecessors, (444), 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 18:22:18,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 18:22:18,282 INFO L93 Difference]: Finished difference Result 1327 states and 1372 transitions. [2024-11-09 18:22:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-09 18:22:18,282 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 3.3134328358208953) internal successors, (444), 134 states have internal predecessors, (444), 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 284 [2024-11-09 18:22:18,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 18:22:18,286 INFO L225 Difference]: With dead ends: 1327 [2024-11-09 18:22:18,286 INFO L226 Difference]: Without dead ends: 1148 [2024-11-09 18:22:18,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4080 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4751, Invalid=13071, Unknown=0, NotChecked=0, Total=17822 [2024-11-09 18:22:18,289 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 3015 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3015 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 18:22:18,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3015 Valid, 754 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 18:22:18,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2024-11-09 18:22:18,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 451. [2024-11-09 18:22:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.0066666666666666) internal successors, (453), 450 states have internal predecessors, (453), 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 18:22:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 453 transitions. [2024-11-09 18:22:18,311 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 453 transitions. Word has length 284 [2024-11-09 18:22:18,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 18:22:18,312 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 453 transitions. [2024-11-09 18:22:18,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 3.3134328358208953) internal successors, (444), 134 states have internal predecessors, (444), 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 18:22:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 453 transitions. [2024-11-09 18:22:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2024-11-09 18:22:18,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 18:22:18,315 INFO L215 NwaCegarLoop]: trace histogram [81, 80, 80, 80, 53, 52, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 18:22:18,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 18:22:18,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 18:22:18,516 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 18:22:18,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 18:22:18,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1769252872, now seen corresponding path program 5 times [2024-11-09 18:22:18,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 18:22:18,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594680734] [2024-11-09 18:22:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 18:22:18,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 18:22:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 18:22:21,387 INFO L134 CoverageAnalysis]: Checked inductivity of 15570 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 12814 trivial. 0 not checked. [2024-11-09 18:22:21,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 18:22:21,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594680734] [2024-11-09 18:22:21,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594680734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 18:22:21,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377075907] [2024-11-09 18:22:21,388 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 18:22:21,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 18:22:21,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 18:22:21,390 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 18:22:21,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process