./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/pr2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/pr2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5922a5be589e27d89439744489152c928c7510f0140c8b0fb4d1faadee969752 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:33:27,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:33:27,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:33:27,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:33:27,773 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:33:27,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:33:27,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:33:27,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:33:27,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:33:27,805 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:33:27,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:33:27,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:33:27,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:33:27,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:33:27,809 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:33:27,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:33:27,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:33:27,810 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:33:27,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:33:27,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:33:27,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:33:27,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:33:27,816 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:33:27,816 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:33:27,816 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:33:27,816 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:33:27,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:33:27,817 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:33:27,817 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:33:27,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:33:27,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:33:27,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:33:27,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:33:27,818 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:33:27,818 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:33:27,819 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:33:27,819 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:33:27,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:33:27,821 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:33:27,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:33:27,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:33:27,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:33:27,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5922a5be589e27d89439744489152c928c7510f0140c8b0fb4d1faadee969752 [2024-11-16 02:33:28,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:33:28,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:33:28,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:33:28,141 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:33:28,142 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:33:28,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/pr2.c [2024-11-16 02:33:29,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:33:29,701 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:33:29,703 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/pr2.c [2024-11-16 02:33:29,713 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244f8c8ec/e006758e45c24f408e394e07ac58b558/FLAG3e8f101ed [2024-11-16 02:33:29,730 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/244f8c8ec/e006758e45c24f408e394e07ac58b558 [2024-11-16 02:33:29,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:33:29,737 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:33:29,738 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:33:29,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:33:29,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:33:29,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:33:29" (1/1) ... [2024-11-16 02:33:29,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ad83e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:29, skipping insertion in model container [2024-11-16 02:33:29,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:33:29" (1/1) ... [2024-11-16 02:33:29,767 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:33:29,946 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-tiling/pr2.c[394,407] [2024-11-16 02:33:29,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:33:29,976 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:33:29,987 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-tiling/pr2.c[394,407] [2024-11-16 02:33:29,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:33:30,011 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:33:30,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30 WrapperNode [2024-11-16 02:33:30,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:33:30,013 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:33:30,013 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:33:30,013 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:33:30,020 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,049 INFO L138 Inliner]: procedures = 15, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2024-11-16 02:33:30,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:33:30,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:33:30,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:33:30,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:33:30,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,061 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,072 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 4 writes are split as follows [0, 0, 4]. [2024-11-16 02:33:30,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,073 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,078 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:33:30,083 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:33:30,083 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:33:30,083 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:33:30,084 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (1/1) ... [2024-11-16 02:33:30,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:33:30,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:30,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 02:33:30,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 02:33:30,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:33:30,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:33:30,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:33:30,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:33:30,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:33:30,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:33:30,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:33:30,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:33:30,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:33:30,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:33:30,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:33:30,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:33:30,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:33:30,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:33:30,223 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:33:30,225 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:33:30,439 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-16 02:33:30,439 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:33:30,452 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:33:30,452 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:33:30,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:33:30 BoogieIcfgContainer [2024-11-16 02:33:30,453 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:33:30,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:33:30,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:33:30,457 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:33:30,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:33:29" (1/3) ... [2024-11-16 02:33:30,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94e7c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:33:30, skipping insertion in model container [2024-11-16 02:33:30,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:33:30" (2/3) ... [2024-11-16 02:33:30,458 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94e7c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:33:30, skipping insertion in model container [2024-11-16 02:33:30,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:33:30" (3/3) ... [2024-11-16 02:33:30,459 INFO L112 eAbstractionObserver]: Analyzing ICFG pr2.c [2024-11-16 02:33:30,470 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:33:30,470 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:33:30,514 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:33:30,519 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;@1fac2720, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:33:30,519 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:33:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:30,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 02:33:30,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:30,527 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:30,527 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:30,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:30,531 INFO L85 PathProgramCache]: Analyzing trace with hash 283621718, now seen corresponding path program 1 times [2024-11-16 02:33:30,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:30,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420907829] [2024-11-16 02:33:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:30,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:30,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:30,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420907829] [2024-11-16 02:33:30,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420907829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:30,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:30,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:33:30,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961951763] [2024-11-16 02:33:30,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:30,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:33:30,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:30,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:33:30,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:33:30,737 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.48) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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) [2024-11-16 02:33:30,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:30,747 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2024-11-16 02:33:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:33:30,750 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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 15 [2024-11-16 02:33:30,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:30,756 INFO L225 Difference]: With dead ends: 48 [2024-11-16 02:33:30,756 INFO L226 Difference]: Without dead ends: 21 [2024-11-16 02:33:30,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:33:30,760 INFO L432 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:30,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-16 02:33:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-16 02:33:30,783 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) [2024-11-16 02:33:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-16 02:33:30,785 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 15 [2024-11-16 02:33:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:30,785 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-16 02:33:30,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 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) [2024-11-16 02:33:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-16 02:33:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 02:33:30,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:30,788 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:30,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:33:30,789 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:30,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:30,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1633653103, now seen corresponding path program 1 times [2024-11-16 02:33:30,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:30,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76577919] [2024-11-16 02:33:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:30,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:31,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:31,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76577919] [2024-11-16 02:33:31,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76577919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:31,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:31,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 02:33:31,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543709602] [2024-11-16 02:33:31,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:31,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 02:33:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:31,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 02:33:31,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:33:31,184 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:31,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:31,246 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-11-16 02:33:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 02:33:31,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 02:33:31,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:31,248 INFO L225 Difference]: With dead ends: 36 [2024-11-16 02:33:31,249 INFO L226 Difference]: Without dead ends: 26 [2024-11-16 02:33:31,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:33:31,251 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 50 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:31,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 25 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:33:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-16 02:33:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2024-11-16 02:33:31,261 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) [2024-11-16 02:33:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-16 02:33:31,262 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2024-11-16 02:33:31,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:31,262 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-16 02:33:31,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-16 02:33:31,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 02:33:31,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:31,263 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:31,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:33:31,264 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:31,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash -836121489, now seen corresponding path program 1 times [2024-11-16 02:33:31,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:31,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156195948] [2024-11-16 02:33:31,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:31,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:31,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:31,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156195948] [2024-11-16 02:33:31,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156195948] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:31,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749334434] [2024-11-16 02:33:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:31,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:31,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:31,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:31,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:33:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:31,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:33:31,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:32,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:33:32,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:32,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:33:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:32,155 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:32,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:32,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-16 02:33:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:32,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749334434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:32,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:32,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 6] total 18 [2024-11-16 02:33:32,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408126874] [2024-11-16 02:33:32,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:32,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:33:32,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:33:32,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:33:32,245 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:32,806 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2024-11-16 02:33:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 02:33:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 02:33:32,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:32,811 INFO L225 Difference]: With dead ends: 116 [2024-11-16 02:33:32,812 INFO L226 Difference]: Without dead ends: 101 [2024-11-16 02:33:32,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2024-11-16 02:33:32,813 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 204 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:32,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 180 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:33:32,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-16 02:33:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 39. [2024-11-16 02:33:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:32,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2024-11-16 02:33:32,833 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 21 [2024-11-16 02:33:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:32,834 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2024-11-16 02:33:32,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:32,834 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2024-11-16 02:33:32,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 02:33:32,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:32,835 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:32,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:33,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:33,037 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:33,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:33,037 INFO L85 PathProgramCache]: Analyzing trace with hash -835197968, now seen corresponding path program 1 times [2024-11-16 02:33:33,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:33,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551003487] [2024-11-16 02:33:33,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:33,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 02:33:33,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:33,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551003487] [2024-11-16 02:33:33,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551003487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:33,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:33,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:33:33,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969834727] [2024-11-16 02:33:33,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:33,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:33:33,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:33:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:33:33,117 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:33,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:33,133 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2024-11-16 02:33:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:33:33,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 02:33:33,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:33,136 INFO L225 Difference]: With dead ends: 44 [2024-11-16 02:33:33,136 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 02:33:33,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:33:33,137 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:33,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:33,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 02:33:33,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-16 02:33:33,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-11-16 02:33:33,144 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 21 [2024-11-16 02:33:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:33,144 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-11-16 02:33:33,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:33,144 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-11-16 02:33:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 02:33:33,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:33,145 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:33,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 02:33:33,146 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:33,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:33,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1129524496, now seen corresponding path program 1 times [2024-11-16 02:33:33,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:33,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170905545] [2024-11-16 02:33:33,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:33,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:33,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:33,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170905545] [2024-11-16 02:33:33,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170905545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:33,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:33,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:33:33,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970589905] [2024-11-16 02:33:33,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:33,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:33:33,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:33,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:33:33,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:33:33,202 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:33,229 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2024-11-16 02:33:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:33:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 02:33:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:33,230 INFO L225 Difference]: With dead ends: 69 [2024-11-16 02:33:33,230 INFO L226 Difference]: Without dead ends: 52 [2024-11-16 02:33:33,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:33:33,231 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 37 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:33,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 50 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-16 02:33:33,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2024-11-16 02:33:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2024-11-16 02:33:33,237 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 21 [2024-11-16 02:33:33,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:33,237 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2024-11-16 02:33:33,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:33,238 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2024-11-16 02:33:33,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 02:33:33,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:33,238 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:33,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 02:33:33,238 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:33,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:33,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1000441777, now seen corresponding path program 1 times [2024-11-16 02:33:33,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:33,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416341221] [2024-11-16 02:33:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:33,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416341221] [2024-11-16 02:33:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416341221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406278000] [2024-11-16 02:33:33,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:33,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:33,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:33,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:33,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:33:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:33,556 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:33:33,558 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:33,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:33,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:33:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:33,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:33,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-16 02:33:33,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-16 02:33:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406278000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:33,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:33,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 15 [2024-11-16 02:33:33,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765577163] [2024-11-16 02:33:33,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:33,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 02:33:33,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:33,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 02:33:33,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-11-16 02:33:33,752 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:34,012 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2024-11-16 02:33:34,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-16 02:33:34,012 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 02:33:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:34,013 INFO L225 Difference]: With dead ends: 81 [2024-11-16 02:33:34,013 INFO L226 Difference]: Without dead ends: 78 [2024-11-16 02:33:34,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:33:34,014 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 70 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:34,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 147 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:33:34,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-16 02:33:34,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2024-11-16 02:33:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2024-11-16 02:33:34,028 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 21 [2024-11-16 02:33:34,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:34,030 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2024-11-16 02:33:34,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:34,030 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2024-11-16 02:33:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 02:33:34,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:34,031 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:34,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:34,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 02:33:34,236 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:34,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:34,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1621422898, now seen corresponding path program 1 times [2024-11-16 02:33:34,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:34,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106383598] [2024-11-16 02:33:34,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:34,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:34,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:34,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106383598] [2024-11-16 02:33:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106383598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:34,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:34,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:33:34,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738067211] [2024-11-16 02:33:34,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:34,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:33:34,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:34,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:33:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:34,267 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2024-11-16 02:33:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:34,282 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2024-11-16 02:33:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:33:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) Word has length 26 [2024-11-16 02:33:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:34,283 INFO L225 Difference]: With dead ends: 78 [2024-11-16 02:33:34,283 INFO L226 Difference]: Without dead ends: 61 [2024-11-16 02:33:34,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:34,284 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:34,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 43 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:34,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-16 02:33:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2024-11-16 02:33:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2024-11-16 02:33:34,291 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 26 [2024-11-16 02:33:34,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:34,291 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2024-11-16 02:33:34,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 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) [2024-11-16 02:33:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2024-11-16 02:33:34,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:33:34,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:34,292 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:34,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 02:33:34,292 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:34,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash 531502776, now seen corresponding path program 1 times [2024-11-16 02:33:34,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:34,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541982959] [2024-11-16 02:33:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:34,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:34,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:34,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:34,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541982959] [2024-11-16 02:33:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541982959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:34,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120800624] [2024-11-16 02:33:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:34,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:34,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:34,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:34,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:33:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:34,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-16 02:33:34,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:34,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:33:34,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:33:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:34,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:34,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:33:34,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-11-16 02:33:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:34,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120800624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:34,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:34,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2024-11-16 02:33:34,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412648925] [2024-11-16 02:33:34,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:34,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-16 02:33:34,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:34,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-16 02:33:34,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-16 02:33:34,864 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:35,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:35,091 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2024-11-16 02:33:35,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:33:35,091 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 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 27 [2024-11-16 02:33:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:35,092 INFO L225 Difference]: With dead ends: 91 [2024-11-16 02:33:35,092 INFO L226 Difference]: Without dead ends: 80 [2024-11-16 02:33:35,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:33:35,093 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 111 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:35,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 167 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:33:35,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-16 02:33:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 57. [2024-11-16 02:33:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 56 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2024-11-16 02:33:35,100 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 27 [2024-11-16 02:33:35,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:35,100 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2024-11-16 02:33:35,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2024-11-16 02:33:35,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-16 02:33:35,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:35,101 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:35,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:33:35,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:35,303 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:35,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash -465569577, now seen corresponding path program 1 times [2024-11-16 02:33:35,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:35,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800439634] [2024-11-16 02:33:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:35,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:35,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800439634] [2024-11-16 02:33:35,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800439634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:35,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129383067] [2024-11-16 02:33:35,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:35,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:35,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:35,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:35,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:33:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:35,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:33:35,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:35,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:35,679 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:35,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:35,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:33:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129383067] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:35,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:35,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 14 [2024-11-16 02:33:35,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865746586] [2024-11-16 02:33:35,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:35,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:33:35,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:33:35,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:33:35,757 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 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) [2024-11-16 02:33:35,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:35,962 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2024-11-16 02:33:35,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 02:33:35,963 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 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) Word has length 27 [2024-11-16 02:33:35,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:35,963 INFO L225 Difference]: With dead ends: 97 [2024-11-16 02:33:35,963 INFO L226 Difference]: Without dead ends: 94 [2024-11-16 02:33:35,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-11-16 02:33:35,964 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 66 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:35,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 157 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:33:35,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-16 02:33:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 66. [2024-11-16 02:33:35,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2024-11-16 02:33:35,980 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 27 [2024-11-16 02:33:35,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:35,980 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2024-11-16 02:33:35,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 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) [2024-11-16 02:33:35,980 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2024-11-16 02:33:35,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-16 02:33:35,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:35,983 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:36,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:33:36,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:36,184 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:36,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:36,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1881695397, now seen corresponding path program 1 times [2024-11-16 02:33:36,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:36,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546558163] [2024-11-16 02:33:36,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:36,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 02:33:36,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:36,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546558163] [2024-11-16 02:33:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546558163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:33:36,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:33:36,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:33:36,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209289597] [2024-11-16 02:33:36,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:33:36,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:33:36,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:36,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:33:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:36,212 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:36,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:36,227 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2024-11-16 02:33:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:33:36,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 32 [2024-11-16 02:33:36,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:36,228 INFO L225 Difference]: With dead ends: 92 [2024-11-16 02:33:36,228 INFO L226 Difference]: Without dead ends: 72 [2024-11-16 02:33:36,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:33:36,229 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:36,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 56 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:33:36,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-16 02:33:36,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2024-11-16 02:33:36,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.152542372881356) internal successors, (68), 59 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-16 02:33:36,235 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 32 [2024-11-16 02:33:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:36,235 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-16 02:33:36,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-16 02:33:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-16 02:33:36,236 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:36,236 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:36,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 02:33:36,237 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:36,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash -520501695, now seen corresponding path program 2 times [2024-11-16 02:33:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798639619] [2024-11-16 02:33:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:36,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798639619] [2024-11-16 02:33:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798639619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20045476] [2024-11-16 02:33:36,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:33:36,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:36,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:36,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:36,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:33:36,580 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:33:36,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:36,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 02:33:36,583 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:36,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:37,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20045476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:37,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:37,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 25 [2024-11-16 02:33:37,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623915085] [2024-11-16 02:33:37,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:37,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:33:37,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:37,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:33:37,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:33:37,007 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:37,180 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2024-11-16 02:33:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 02:33:37,180 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 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 33 [2024-11-16 02:33:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:37,181 INFO L225 Difference]: With dead ends: 122 [2024-11-16 02:33:37,181 INFO L226 Difference]: Without dead ends: 82 [2024-11-16 02:33:37,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2024-11-16 02:33:37,182 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 150 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:37,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 107 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:33:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-16 02:33:37,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2024-11-16 02:33:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 69 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2024-11-16 02:33:37,188 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 33 [2024-11-16 02:33:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:37,189 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2024-11-16 02:33:37,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.4) internal successors, (85), 25 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2024-11-16 02:33:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 02:33:37,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:37,190 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:37,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:37,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-16 02:33:37,395 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:37,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:37,395 INFO L85 PathProgramCache]: Analyzing trace with hash 171450403, now seen corresponding path program 3 times [2024-11-16 02:33:37,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:37,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353272567] [2024-11-16 02:33:37,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:37,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:37,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353272567] [2024-11-16 02:33:37,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353272567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:37,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18025801] [2024-11-16 02:33:37,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:33:37,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:37,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:37,764 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) [2024-11-16 02:33:37,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:33:37,834 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:33:37,834 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:37,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-16 02:33:37,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:37,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:33:37,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:38,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:33:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:38,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:38,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:33:38,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-11-16 02:33:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:38,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18025801] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:38,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:38,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 26 [2024-11-16 02:33:38,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543917267] [2024-11-16 02:33:38,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:38,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 02:33:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:38,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 02:33:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:33:38,245 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:39,020 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2024-11-16 02:33:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 02:33:39,021 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 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 38 [2024-11-16 02:33:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:39,022 INFO L225 Difference]: With dead ends: 144 [2024-11-16 02:33:39,022 INFO L226 Difference]: Without dead ends: 133 [2024-11-16 02:33:39,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=428, Invalid=2022, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 02:33:39,024 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 206 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:39,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 302 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:33:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-16 02:33:39,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 82. [2024-11-16 02:33:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.123456790123457) internal successors, (91), 81 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2024-11-16 02:33:39,039 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 38 [2024-11-16 02:33:39,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:39,040 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2024-11-16 02:33:39,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8461538461538463) internal successors, (100), 26 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:39,040 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2024-11-16 02:33:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-16 02:33:39,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:39,041 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:39,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:39,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:39,242 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:39,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:39,242 INFO L85 PathProgramCache]: Analyzing trace with hash -824706207, now seen corresponding path program 1 times [2024-11-16 02:33:39,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:39,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064481088] [2024-11-16 02:33:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:39,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:39,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:39,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064481088] [2024-11-16 02:33:39,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064481088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:39,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512636861] [2024-11-16 02:33:39,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:39,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:39,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:39,543 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) [2024-11-16 02:33:39,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:33:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:39,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 02:33:39,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:39,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:39,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:33:39,911 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:39,911 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:39,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:39,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:33:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512636861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:39,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:39,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 21 [2024-11-16 02:33:39,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352000414] [2024-11-16 02:33:39,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:39,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 02:33:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:39,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 02:33:39,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:33:39,985 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:40,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:40,365 INFO L93 Difference]: Finished difference Result 138 states and 153 transitions. [2024-11-16 02:33:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-16 02:33:40,365 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 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 38 [2024-11-16 02:33:40,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:40,366 INFO L225 Difference]: With dead ends: 138 [2024-11-16 02:33:40,366 INFO L226 Difference]: Without dead ends: 135 [2024-11-16 02:33:40,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=1090, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 02:33:40,367 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 95 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:40,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 280 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:33:40,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-16 02:33:40,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 94. [2024-11-16 02:33:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 93 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:40,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2024-11-16 02:33:40,379 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 38 [2024-11-16 02:33:40,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:40,379 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2024-11-16 02:33:40,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.9047619047619047) internal successors, (82), 21 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:40,380 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2024-11-16 02:33:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 02:33:40,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:40,381 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:40,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:33:40,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:40,585 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:40,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:40,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1884541804, now seen corresponding path program 4 times [2024-11-16 02:33:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517084812] [2024-11-16 02:33:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:40,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:40,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:40,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517084812] [2024-11-16 02:33:40,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517084812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:40,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958587591] [2024-11-16 02:33:40,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:33:40,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:40,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:40,933 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) [2024-11-16 02:33:40,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:33:40,994 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:33:40,994 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:40,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 02:33:40,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:41,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-16 02:33:41,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-16 02:33:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:41,218 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:41,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:33:41,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:33:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:41,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958587591] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:41,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:41,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2024-11-16 02:33:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267250692] [2024-11-16 02:33:41,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:41,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:33:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:33:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:33:41,365 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:41,921 INFO L93 Difference]: Finished difference Result 154 states and 171 transitions. [2024-11-16 02:33:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 02:33:41,921 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 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 44 [2024-11-16 02:33:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:41,922 INFO L225 Difference]: With dead ends: 154 [2024-11-16 02:33:41,922 INFO L226 Difference]: Without dead ends: 143 [2024-11-16 02:33:41,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=283, Invalid=1523, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 02:33:41,924 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 115 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:41,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 326 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:33:41,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-16 02:33:41,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 100. [2024-11-16 02:33:41,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.121212121212121) internal successors, (111), 99 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2024-11-16 02:33:41,933 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 44 [2024-11-16 02:33:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:41,933 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2024-11-16 02:33:41,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.12) internal successors, (103), 25 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2024-11-16 02:33:41,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-16 02:33:41,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:41,934 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:41,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:33:42,135 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,SelfDestructingSolverStorable13 [2024-11-16 02:33:42,135 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:42,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:42,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2026938165, now seen corresponding path program 2 times [2024-11-16 02:33:42,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:42,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359999044] [2024-11-16 02:33:42,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:42,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:42,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359999044] [2024-11-16 02:33:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359999044] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264868273] [2024-11-16 02:33:42,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:33:42,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:42,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:42,490 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) [2024-11-16 02:33:42,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 02:33:42,570 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:33:42,570 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:42,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-16 02:33:42,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:42,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:42,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:42,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:42,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:33:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:42,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264868273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:42,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:42,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 24 [2024-11-16 02:33:42,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168552899] [2024-11-16 02:33:42,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:42,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-16 02:33:42,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-16 02:33:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2024-11-16 02:33:42,942 INFO L87 Difference]: Start difference. First operand 100 states and 111 transitions. Second operand has 24 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 24 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:43,568 INFO L93 Difference]: Finished difference Result 171 states and 189 transitions. [2024-11-16 02:33:43,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 02:33:43,569 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 24 states have internal predecessors, (89), 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 44 [2024-11-16 02:33:43,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:43,570 INFO L225 Difference]: With dead ends: 171 [2024-11-16 02:33:43,570 INFO L226 Difference]: Without dead ends: 168 [2024-11-16 02:33:43,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=1527, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 02:33:43,571 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 76 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:43,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 351 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:33:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-16 02:33:43,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 106. [2024-11-16 02:33:43,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 105 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2024-11-16 02:33:43,585 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 44 [2024-11-16 02:33:43,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:43,585 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2024-11-16 02:33:43,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 24 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:43,586 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2024-11-16 02:33:43,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 02:33:43,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:43,586 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:43,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 02:33:43,794 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,SelfDestructingSolverStorable14 [2024-11-16 02:33:43,794 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:43,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:43,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1488704523, now seen corresponding path program 5 times [2024-11-16 02:33:43,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:43,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57280811] [2024-11-16 02:33:43,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:43,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57280811] [2024-11-16 02:33:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57280811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205610619] [2024-11-16 02:33:44,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:33:44,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:44,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:44,076 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) [2024-11-16 02:33:44,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 02:33:44,162 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-16 02:33:44,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:44,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:33:44,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 56 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:44,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 56 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205610619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:44,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 33 [2024-11-16 02:33:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691987759] [2024-11-16 02:33:44,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:44,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-16 02:33:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-16 02:33:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-11-16 02:33:44,823 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 33 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:45,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:45,026 INFO L93 Difference]: Finished difference Result 206 states and 226 transitions. [2024-11-16 02:33:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 02:33:45,026 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 33 states have internal predecessors, (135), 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 50 [2024-11-16 02:33:45,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:45,027 INFO L225 Difference]: With dead ends: 206 [2024-11-16 02:33:45,027 INFO L226 Difference]: Without dead ends: 130 [2024-11-16 02:33:45,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=392, Invalid=1090, Unknown=0, NotChecked=0, Total=1482 [2024-11-16 02:33:45,029 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 260 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:45,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 183 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:33:45,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-16 02:33:45,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 121. [2024-11-16 02:33:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.1) internal successors, (132), 120 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:45,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 132 transitions. [2024-11-16 02:33:45,037 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 132 transitions. Word has length 50 [2024-11-16 02:33:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:45,037 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 132 transitions. [2024-11-16 02:33:45,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.090909090909091) internal successors, (135), 33 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:45,038 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 132 transitions. [2024-11-16 02:33:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 02:33:45,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:45,038 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:45,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:45,239 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,SelfDestructingSolverStorable15 [2024-11-16 02:33:45,239 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:45,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1574137261, now seen corresponding path program 6 times [2024-11-16 02:33:45,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:45,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746103579] [2024-11-16 02:33:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:45,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:45,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746103579] [2024-11-16 02:33:45,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746103579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789031391] [2024-11-16 02:33:45,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:33:45,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:45,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:45,728 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) [2024-11-16 02:33:45,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 02:33:45,818 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-16 02:33:45,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:45,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 02:33:45,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:45,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-16 02:33:45,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:33:46,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:33:46,173 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 28 treesize of output 10 [2024-11-16 02:33:46,176 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:46,177 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:46,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:33:46,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2024-11-16 02:33:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:46,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789031391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:46,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:46,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 12] total 32 [2024-11-16 02:33:46,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151002948] [2024-11-16 02:33:46,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:46,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 02:33:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:46,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 02:33:46,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2024-11-16 02:33:46,395 INFO L87 Difference]: Start difference. First operand 121 states and 132 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:47,668 INFO L93 Difference]: Finished difference Result 223 states and 246 transitions. [2024-11-16 02:33:47,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-16 02:33:47,669 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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 55 [2024-11-16 02:33:47,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:47,670 INFO L225 Difference]: With dead ends: 223 [2024-11-16 02:33:47,670 INFO L226 Difference]: Without dead ends: 212 [2024-11-16 02:33:47,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=659, Invalid=4743, Unknown=0, NotChecked=0, Total=5402 [2024-11-16 02:33:47,672 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 254 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:47,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 515 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:33:47,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-16 02:33:47,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 139. [2024-11-16 02:33:47,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0942028985507246) internal successors, (151), 138 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 151 transitions. [2024-11-16 02:33:47,684 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 151 transitions. Word has length 55 [2024-11-16 02:33:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:47,684 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 151 transitions. [2024-11-16 02:33:47,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 151 transitions. [2024-11-16 02:33:47,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-16 02:33:47,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:47,685 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:47,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-16 02:33:47,885 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,SelfDestructingSolverStorable16 [2024-11-16 02:33:47,886 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:47,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:47,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1812290641, now seen corresponding path program 2 times [2024-11-16 02:33:47,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:47,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96024446] [2024-11-16 02:33:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:47,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:48,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:48,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96024446] [2024-11-16 02:33:48,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96024446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:48,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149058975] [2024-11-16 02:33:48,234 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:33:48,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:48,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:48,236 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) [2024-11-16 02:33:48,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-16 02:33:48,319 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:33:48,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:48,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 02:33:48,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:48,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:48,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:33:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:48,781 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:48,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:48,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:33:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:48,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149058975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:48,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:48,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 13] total 29 [2024-11-16 02:33:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267251433] [2024-11-16 02:33:48,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:48,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-16 02:33:48,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-16 02:33:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=702, Unknown=0, NotChecked=0, Total=812 [2024-11-16 02:33:48,859 INFO L87 Difference]: Start difference. First operand 139 states and 151 transitions. Second operand has 29 states, 29 states have (on average 4.0) internal successors, (116), 29 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:49,738 INFO L93 Difference]: Finished difference Result 216 states and 237 transitions. [2024-11-16 02:33:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-16 02:33:49,738 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.0) internal successors, (116), 29 states have internal predecessors, (116), 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 55 [2024-11-16 02:33:49,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:49,739 INFO L225 Difference]: With dead ends: 216 [2024-11-16 02:33:49,739 INFO L226 Difference]: Without dead ends: 213 [2024-11-16 02:33:49,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=600, Invalid=4092, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 02:33:49,741 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 199 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:49,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 446 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 02:33:49,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-16 02:33:49,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 151. [2024-11-16 02:33:49,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.1) internal successors, (165), 150 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:49,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2024-11-16 02:33:49,757 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 55 [2024-11-16 02:33:49,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:49,757 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2024-11-16 02:33:49,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.0) internal successors, (116), 29 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:49,757 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2024-11-16 02:33:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-16 02:33:49,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:49,758 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:49,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-16 02:33:49,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 02:33:49,959 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:49,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash -476834599, now seen corresponding path program 3 times [2024-11-16 02:33:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:49,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065374809] [2024-11-16 02:33:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:49,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:50,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:50,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065374809] [2024-11-16 02:33:50,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065374809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:50,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32295205] [2024-11-16 02:33:50,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:33:50,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:50,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:50,301 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:50,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-16 02:33:50,455 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 02:33:50,455 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:50,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-16 02:33:50,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:50,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-16 02:33:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:50,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:50,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:33:50,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:33:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:50,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32295205] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:50,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:50,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-16 02:33:50,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136851533] [2024-11-16 02:33:50,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:50,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-16 02:33:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-16 02:33:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2024-11-16 02:33:50,796 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:51,826 INFO L93 Difference]: Finished difference Result 248 states and 273 transitions. [2024-11-16 02:33:51,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-16 02:33:51,826 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 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 61 [2024-11-16 02:33:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:51,827 INFO L225 Difference]: With dead ends: 248 [2024-11-16 02:33:51,827 INFO L226 Difference]: Without dead ends: 245 [2024-11-16 02:33:51,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=376, Invalid=3046, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 02:33:51,829 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 81 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1342 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:51,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 528 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:33:51,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-16 02:33:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 157. [2024-11-16 02:33:51,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0961538461538463) internal successors, (171), 156 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:51,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2024-11-16 02:33:51,846 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 61 [2024-11-16 02:33:51,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:51,846 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2024-11-16 02:33:51,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.434782608695652) internal successors, (102), 23 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:51,846 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2024-11-16 02:33:51,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-16 02:33:51,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:51,847 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:51,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:52,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:52,052 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:52,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash 45012517, now seen corresponding path program 7 times [2024-11-16 02:33:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:52,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498581759] [2024-11-16 02:33:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:52,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 88 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:52,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:52,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498581759] [2024-11-16 02:33:52,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498581759] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:52,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564201392] [2024-11-16 02:33:52,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:33:52,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:52,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:52,414 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:52,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-16 02:33:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:52,497 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:33:52,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:52,979 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 120 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:52,979 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 120 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564201392] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:53,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:53,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 15] total 43 [2024-11-16 02:33:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232070162] [2024-11-16 02:33:53,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:53,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-16 02:33:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-16 02:33:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2024-11-16 02:33:53,251 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand has 43 states, 43 states have (on average 4.348837209302325) internal successors, (187), 43 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:53,477 INFO L93 Difference]: Finished difference Result 293 states and 319 transitions. [2024-11-16 02:33:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-16 02:33:53,478 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.348837209302325) internal successors, (187), 43 states have internal predecessors, (187), 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 67 [2024-11-16 02:33:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:53,479 INFO L225 Difference]: With dead ends: 293 [2024-11-16 02:33:53,479 INFO L226 Difference]: Without dead ends: 181 [2024-11-16 02:33:53,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=612, Invalid=1838, Unknown=0, NotChecked=0, Total=2450 [2024-11-16 02:33:53,480 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 333 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:53,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 213 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:33:53,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-16 02:33:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 172. [2024-11-16 02:33:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.087719298245614) internal successors, (186), 171 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:53,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 186 transitions. [2024-11-16 02:33:53,497 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 186 transitions. Word has length 67 [2024-11-16 02:33:53,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:53,498 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 186 transitions. [2024-11-16 02:33:53,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.348837209302325) internal successors, (187), 43 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 186 transitions. [2024-11-16 02:33:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 02:33:53,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:53,500 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:53,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-16 02:33:53,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:53,701 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:53,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2106574969, now seen corresponding path program 8 times [2024-11-16 02:33:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:53,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931720096] [2024-11-16 02:33:53,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:53,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:54,227 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 12 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:54,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:54,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931720096] [2024-11-16 02:33:54,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931720096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:54,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193885009] [2024-11-16 02:33:54,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:33:54,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:54,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:54,232 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:54,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-16 02:33:54,318 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:33:54,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:54,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 02:33:54,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:54,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:33:54,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:33:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 12 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:55,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:33:55,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:33:55,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:33:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 12 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:55,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193885009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:33:55,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:33:55,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 49 [2024-11-16 02:33:55,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648412160] [2024-11-16 02:33:55,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:33:55,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 02:33:55,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:33:55,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 02:33:55,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2170, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:33:55,601 INFO L87 Difference]: Start difference. First operand 172 states and 186 transitions. Second operand has 49 states, 49 states have (on average 4.142857142857143) internal successors, (203), 49 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) [2024-11-16 02:33:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:33:58,614 INFO L93 Difference]: Finished difference Result 289 states and 318 transitions. [2024-11-16 02:33:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-16 02:33:58,614 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.142857142857143) internal successors, (203), 49 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) Word has length 72 [2024-11-16 02:33:58,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:33:58,616 INFO L225 Difference]: With dead ends: 289 [2024-11-16 02:33:58,616 INFO L226 Difference]: Without dead ends: 278 [2024-11-16 02:33:58,619 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3136 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1318, Invalid=11792, Unknown=0, NotChecked=0, Total=13110 [2024-11-16 02:33:58,619 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 417 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 02:33:58,619 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1027 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 02:33:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-16 02:33:58,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 190. [2024-11-16 02:33:58,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.0846560846560847) internal successors, (205), 189 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:33:58,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 205 transitions. [2024-11-16 02:33:58,639 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 205 transitions. Word has length 72 [2024-11-16 02:33:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:33:58,639 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 205 transitions. [2024-11-16 02:33:58,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.142857142857143) internal successors, (203), 49 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) [2024-11-16 02:33:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 205 transitions. [2024-11-16 02:33:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 02:33:58,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:33:58,640 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:33:58,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-16 02:33:58,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:58,841 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:33:58,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:33:58,841 INFO L85 PathProgramCache]: Analyzing trace with hash 639964737, now seen corresponding path program 3 times [2024-11-16 02:33:58,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:33:58,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913919983] [2024-11-16 02:33:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:33:58,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:33:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:33:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:33:59,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:33:59,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913919983] [2024-11-16 02:33:59,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913919983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:33:59,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868268328] [2024-11-16 02:33:59,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:33:59,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:33:59,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:33:59,315 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:33:59,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-16 02:33:59,451 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-16 02:33:59,451 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:33:59,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-16 02:33:59,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:33:59,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:33:59,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:00,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:00,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:00,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:00,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868268328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:00,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:00,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19, 17] total 35 [2024-11-16 02:34:00,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183202393] [2024-11-16 02:34:00,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:00,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-16 02:34:00,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:00,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-16 02:34:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1044, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 02:34:00,159 INFO L87 Difference]: Start difference. First operand 190 states and 205 transitions. Second operand has 35 states, 35 states have (on average 4.3428571428571425) internal successors, (152), 35 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:01,504 INFO L93 Difference]: Finished difference Result 288 states and 315 transitions. [2024-11-16 02:34:01,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-16 02:34:01,507 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.3428571428571425) internal successors, (152), 35 states have internal predecessors, (152), 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 72 [2024-11-16 02:34:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:01,508 INFO L225 Difference]: With dead ends: 288 [2024-11-16 02:34:01,508 INFO L226 Difference]: Without dead ends: 285 [2024-11-16 02:34:01,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1796 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=669, Invalid=5651, Unknown=0, NotChecked=0, Total=6320 [2024-11-16 02:34:01,510 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 150 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:01,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 765 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:34:01,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-16 02:34:01,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 202. [2024-11-16 02:34:01,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.0895522388059702) internal successors, (219), 201 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:01,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 219 transitions. [2024-11-16 02:34:01,536 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 219 transitions. Word has length 72 [2024-11-16 02:34:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:01,536 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 219 transitions. [2024-11-16 02:34:01,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.3428571428571425) internal successors, (152), 35 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:01,537 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 219 transitions. [2024-11-16 02:34:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 02:34:01,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:01,538 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:01,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:01,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-16 02:34:01,738 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:01,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:01,739 INFO L85 PathProgramCache]: Analyzing trace with hash -877149939, now seen corresponding path program 4 times [2024-11-16 02:34:01,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:01,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033776380] [2024-11-16 02:34:01,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:01,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:02,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:02,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033776380] [2024-11-16 02:34:02,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033776380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:02,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023826335] [2024-11-16 02:34:02,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:34:02,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:02,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:02,152 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:02,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-16 02:34:02,240 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:34:02,240 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:02,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:34:02,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:02,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-16 02:34:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:02,481 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:02,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:02,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:02,595 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:02,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023826335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:02,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:02,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 26 [2024-11-16 02:34:02,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836706477] [2024-11-16 02:34:02,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:02,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 02:34:02,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:02,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 02:34:02,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2024-11-16 02:34:02,597 INFO L87 Difference]: Start difference. First operand 202 states and 219 transitions. Second operand has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:04,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:04,207 INFO L93 Difference]: Finished difference Result 325 states and 357 transitions. [2024-11-16 02:34:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-16 02:34:04,207 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 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 78 [2024-11-16 02:34:04,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:04,208 INFO L225 Difference]: With dead ends: 325 [2024-11-16 02:34:04,208 INFO L226 Difference]: Without dead ends: 322 [2024-11-16 02:34:04,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1818 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=556, Invalid=5606, Unknown=0, NotChecked=0, Total=6162 [2024-11-16 02:34:04,210 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 114 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:04,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 932 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 02:34:04,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-16 02:34:04,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 208. [2024-11-16 02:34:04,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0869565217391304) internal successors, (225), 207 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:04,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 225 transitions. [2024-11-16 02:34:04,233 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 225 transitions. Word has length 78 [2024-11-16 02:34:04,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:04,233 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 225 transitions. [2024-11-16 02:34:04,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:04,233 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 225 transitions. [2024-11-16 02:34:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 02:34:04,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:04,234 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:04,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:04,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:04,434 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:04,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:04,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2084588889, now seen corresponding path program 9 times [2024-11-16 02:34:04,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:04,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441401513] [2024-11-16 02:34:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:04,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:04,839 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 164 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:04,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:04,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441401513] [2024-11-16 02:34:04,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441401513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:04,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18729268] [2024-11-16 02:34:04,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:34:04,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:04,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:04,841 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:04,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-16 02:34:04,998 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-16 02:34:04,998 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:04,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-16 02:34:05,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 208 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:05,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:05,950 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 208 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:05,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18729268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:05,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:05,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 51 [2024-11-16 02:34:05,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142169058] [2024-11-16 02:34:05,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:05,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-16 02:34:05,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:05,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-16 02:34:05,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=1955, Unknown=0, NotChecked=0, Total=2550 [2024-11-16 02:34:05,952 INFO L87 Difference]: Start difference. First operand 208 states and 225 transitions. Second operand has 51 states, 51 states have (on average 4.647058823529412) internal successors, (237), 51 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:06,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:06,260 INFO L93 Difference]: Finished difference Result 380 states and 412 transitions. [2024-11-16 02:34:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 02:34:06,260 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.647058823529412) internal successors, (237), 51 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-11-16 02:34:06,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:06,261 INFO L225 Difference]: With dead ends: 380 [2024-11-16 02:34:06,261 INFO L226 Difference]: Without dead ends: 232 [2024-11-16 02:34:06,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=827, Invalid=2595, Unknown=0, NotChecked=0, Total=3422 [2024-11-16 02:34:06,263 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 195 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:06,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 345 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:34:06,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-16 02:34:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 223. [2024-11-16 02:34:06,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.0810810810810811) internal successors, (240), 222 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:06,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 240 transitions. [2024-11-16 02:34:06,285 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 240 transitions. Word has length 84 [2024-11-16 02:34:06,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:06,285 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 240 transitions. [2024-11-16 02:34:06,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.647058823529412) internal successors, (237), 51 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:06,286 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 240 transitions. [2024-11-16 02:34:06,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 02:34:06,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:06,287 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:06,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:06,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:06,488 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:06,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash -584737737, now seen corresponding path program 10 times [2024-11-16 02:34:06,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:06,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931404557] [2024-11-16 02:34:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 16 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:07,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931404557] [2024-11-16 02:34:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931404557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062087583] [2024-11-16 02:34:07,078 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:34:07,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:07,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:07,079 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:07,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-16 02:34:07,180 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:34:07,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:07,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-16 02:34:07,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:07,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-16 02:34:07,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 02:34:07,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-16 02:34:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 16 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:07,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:07,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:07,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 16 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:08,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062087583] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:08,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:08,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 47 [2024-11-16 02:34:08,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707108469] [2024-11-16 02:34:08,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:08,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-16 02:34:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-16 02:34:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=2013, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 02:34:08,031 INFO L87 Difference]: Start difference. First operand 223 states and 240 transitions. Second operand has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 47 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:11,795 INFO L93 Difference]: Finished difference Result 367 states and 404 transitions. [2024-11-16 02:34:11,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-16 02:34:11,795 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 47 states have internal predecessors, (224), 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 89 [2024-11-16 02:34:11,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:11,805 INFO L225 Difference]: With dead ends: 367 [2024-11-16 02:34:11,805 INFO L226 Difference]: Without dead ends: 356 [2024-11-16 02:34:11,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4736 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1306, Invalid=16250, Unknown=0, NotChecked=0, Total=17556 [2024-11-16 02:34:11,807 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 385 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 2661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:11,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1246 Invalid, 2661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 02:34:11,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-16 02:34:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 235. [2024-11-16 02:34:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.0811965811965811) internal successors, (253), 234 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:11,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 253 transitions. [2024-11-16 02:34:11,835 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 253 transitions. Word has length 89 [2024-11-16 02:34:11,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:11,835 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 253 transitions. [2024-11-16 02:34:11,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.76595744680851) internal successors, (224), 47 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:11,836 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 253 transitions. [2024-11-16 02:34:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 02:34:11,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:11,838 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:11,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:12,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:12,038 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:12,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:12,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1452171023, now seen corresponding path program 4 times [2024-11-16 02:34:12,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:12,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213426746] [2024-11-16 02:34:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:12,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:12,590 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:12,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:12,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213426746] [2024-11-16 02:34:12,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213426746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:12,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102939969] [2024-11-16 02:34:12,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:34:12,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:12,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:12,591 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:12,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-16 02:34:12,707 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:34:12,708 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:12,709 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-16 02:34:12,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:12,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-16 02:34:12,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-16 02:34:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:13,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:13,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:13,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:13,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102939969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:13,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:13,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 19] total 32 [2024-11-16 02:34:13,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891925195] [2024-11-16 02:34:13,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:13,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 02:34:13,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:13,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 02:34:13,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=882, Unknown=0, NotChecked=0, Total=992 [2024-11-16 02:34:13,275 INFO L87 Difference]: Start difference. First operand 235 states and 253 transitions. Second operand has 32 states, 32 states have (on average 4.90625) internal successors, (157), 32 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:14,983 INFO L93 Difference]: Finished difference Result 354 states and 387 transitions. [2024-11-16 02:34:14,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-16 02:34:14,983 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.90625) internal successors, (157), 32 states have internal predecessors, (157), 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 89 [2024-11-16 02:34:14,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:14,984 INFO L225 Difference]: With dead ends: 354 [2024-11-16 02:34:14,984 INFO L226 Difference]: Without dead ends: 351 [2024-11-16 02:34:14,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 166 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2309 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=718, Invalid=7114, Unknown=0, NotChecked=0, Total=7832 [2024-11-16 02:34:14,986 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 187 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:14,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1025 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 02:34:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-16 02:34:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 247. [2024-11-16 02:34:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.0853658536585367) internal successors, (267), 246 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 267 transitions. [2024-11-16 02:34:15,010 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 267 transitions. Word has length 89 [2024-11-16 02:34:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:15,011 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 267 transitions. [2024-11-16 02:34:15,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.90625) internal successors, (157), 32 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 267 transitions. [2024-11-16 02:34:15,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 02:34:15,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:15,012 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:15,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:15,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-16 02:34:15,212 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:15,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:15,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1144057984, now seen corresponding path program 11 times [2024-11-16 02:34:15,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:15,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268224345] [2024-11-16 02:34:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 18 proven. 303 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:15,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:15,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268224345] [2024-11-16 02:34:15,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268224345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115270044] [2024-11-16 02:34:15,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:34:15,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:15,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:15,872 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:15,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-16 02:34:16,046 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-16 02:34:16,046 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:16,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-16 02:34:16,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:16,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:16,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:16,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:16,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-16 02:34:16,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:16,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-16 02:34:16,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:16,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 48 [2024-11-16 02:34:16,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:16,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 47 treesize of output 58 [2024-11-16 02:34:16,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:16,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 54 treesize of output 68 [2024-11-16 02:34:16,720 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:16,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 66 treesize of output 75 [2024-11-16 02:34:16,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:16,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 82 treesize of output 82 [2024-11-16 02:34:18,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:18,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 92 treesize of output 28 [2024-11-16 02:34:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 18 proven. 303 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:18,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:19,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 93 [2024-11-16 02:34:19,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 02:34:19,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3062 treesize of output 2806 [2024-11-16 02:34:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 18 proven. 303 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:19,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115270044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:19,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:19,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 30, 25] total 71 [2024-11-16 02:34:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292931117] [2024-11-16 02:34:19,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:19,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-16 02:34:19,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-16 02:34:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=4595, Unknown=0, NotChecked=0, Total=4970 [2024-11-16 02:34:19,694 INFO L87 Difference]: Start difference. First operand 247 states and 267 transitions. Second operand has 71 states, 71 states have (on average 3.816901408450704) internal successors, (271), 71 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:27,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:27,993 INFO L93 Difference]: Finished difference Result 433 states and 470 transitions. [2024-11-16 02:34:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-16 02:34:27,994 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.816901408450704) internal successors, (271), 71 states have internal predecessors, (271), 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 95 [2024-11-16 02:34:27,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:27,995 INFO L225 Difference]: With dead ends: 433 [2024-11-16 02:34:27,995 INFO L226 Difference]: Without dead ends: 422 [2024-11-16 02:34:27,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6417 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2692, Invalid=21178, Unknown=0, NotChecked=0, Total=23870 [2024-11-16 02:34:27,997 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 1397 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 3649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 671 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:27,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 1572 Invalid, 3649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [671 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 02:34:27,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-16 02:34:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 253. [2024-11-16 02:34:28,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.0833333333333333) internal successors, (273), 252 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:28,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 273 transitions. [2024-11-16 02:34:28,030 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 273 transitions. Word has length 95 [2024-11-16 02:34:28,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:28,030 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 273 transitions. [2024-11-16 02:34:28,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.816901408450704) internal successors, (271), 71 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 273 transitions. [2024-11-16 02:34:28,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-16 02:34:28,031 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:28,032 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:28,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:28,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-16 02:34:28,232 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:28,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:28,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1709789915, now seen corresponding path program 5 times [2024-11-16 02:34:28,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:28,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871957049] [2024-11-16 02:34:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:28,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:28,772 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:28,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:28,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871957049] [2024-11-16 02:34:28,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871957049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:28,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908809656] [2024-11-16 02:34:28,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:34:28,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:28,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:28,775 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:28,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-16 02:34:29,067 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-16 02:34:29,068 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:29,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-16 02:34:29,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:29,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:29,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:29,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:29,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:29,917 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 0 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:29,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908809656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:29,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:29,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 20] total 40 [2024-11-16 02:34:29,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541983140] [2024-11-16 02:34:29,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:29,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-16 02:34:29,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:29,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-16 02:34:29,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1413, Unknown=0, NotChecked=0, Total=1560 [2024-11-16 02:34:29,918 INFO L87 Difference]: Start difference. First operand 253 states and 273 transitions. Second operand has 40 states, 40 states have (on average 4.875) internal successors, (195), 40 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:32,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:32,452 INFO L93 Difference]: Finished difference Result 402 states and 441 transitions. [2024-11-16 02:34:32,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-16 02:34:32,453 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 4.875) internal successors, (195), 40 states have internal predecessors, (195), 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 95 [2024-11-16 02:34:32,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:32,454 INFO L225 Difference]: With dead ends: 402 [2024-11-16 02:34:32,454 INFO L226 Difference]: Without dead ends: 399 [2024-11-16 02:34:32,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3802 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1034, Invalid=11176, Unknown=0, NotChecked=0, Total=12210 [2024-11-16 02:34:32,456 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 215 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 3727 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 3990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 3727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:32,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1421 Invalid, 3990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 3727 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 02:34:32,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2024-11-16 02:34:32,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 259. [2024-11-16 02:34:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.0813953488372092) internal successors, (279), 258 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) [2024-11-16 02:34:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 279 transitions. [2024-11-16 02:34:32,486 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 279 transitions. Word has length 95 [2024-11-16 02:34:32,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:32,486 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 279 transitions. [2024-11-16 02:34:32,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 4.875) internal successors, (195), 40 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:32,486 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 279 transitions. [2024-11-16 02:34:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-16 02:34:32,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:32,487 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:32,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-16 02:34:32,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-16 02:34:32,688 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:32,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:32,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1743508983, now seen corresponding path program 12 times [2024-11-16 02:34:32,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:32,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341009687] [2024-11-16 02:34:32,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:32,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 264 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:33,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341009687] [2024-11-16 02:34:33,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341009687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454771025] [2024-11-16 02:34:33,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:34:33,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:33,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:33,237 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:33,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-16 02:34:33,686 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-16 02:34:33,687 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:33,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-16 02:34:33,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 320 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:34,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 320 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:34,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454771025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:34,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:34,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 21] total 60 [2024-11-16 02:34:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732861602] [2024-11-16 02:34:34,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:34,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-16 02:34:34,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:34,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-16 02:34:34,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=812, Invalid=2728, Unknown=0, NotChecked=0, Total=3540 [2024-11-16 02:34:34,968 INFO L87 Difference]: Start difference. First operand 259 states and 279 transitions. Second operand has 60 states, 60 states have (on average 4.8) internal successors, (288), 60 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:35,380 INFO L93 Difference]: Finished difference Result 467 states and 505 transitions. [2024-11-16 02:34:35,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 02:34:35,381 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 4.8) internal successors, (288), 60 states have internal predecessors, (288), 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 101 [2024-11-16 02:34:35,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:35,382 INFO L225 Difference]: With dead ends: 467 [2024-11-16 02:34:35,382 INFO L226 Difference]: Without dead ends: 283 [2024-11-16 02:34:35,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1106, Invalid=3586, Unknown=0, NotChecked=0, Total=4692 [2024-11-16 02:34:35,387 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 347 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:35,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 422 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:34:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-16 02:34:35,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 274. [2024-11-16 02:34:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 1.0769230769230769) internal successors, (294), 273 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 294 transitions. [2024-11-16 02:34:35,428 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 294 transitions. Word has length 101 [2024-11-16 02:34:35,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:35,428 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 294 transitions. [2024-11-16 02:34:35,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 4.8) internal successors, (288), 60 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:35,429 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 294 transitions. [2024-11-16 02:34:35,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 02:34:35,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:35,430 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:35,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-16 02:34:35,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:35,630 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:35,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1731637995, now seen corresponding path program 13 times [2024-11-16 02:34:35,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:35,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142716740] [2024-11-16 02:34:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:35,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 20 proven. 387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:36,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:36,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142716740] [2024-11-16 02:34:36,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142716740] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:36,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694272628] [2024-11-16 02:34:36,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:34:36,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:36,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:36,380 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:36,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-16 02:34:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:36,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-16 02:34:36,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:36,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-16 02:34:36,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-16 02:34:37,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 02:34:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 20 proven. 387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:37,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:37,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2024-11-16 02:34:37,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-16 02:34:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 20 proven. 387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:38,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694272628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:38,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:38,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 22] total 64 [2024-11-16 02:34:38,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465832762] [2024-11-16 02:34:38,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:38,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-16 02:34:38,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:38,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-16 02:34:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=3803, Unknown=0, NotChecked=0, Total=4032 [2024-11-16 02:34:38,106 INFO L87 Difference]: Start difference. First operand 274 states and 294 transitions. Second operand has 64 states, 64 states have (on average 4.75) internal successors, (304), 64 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:44,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:44,087 INFO L93 Difference]: Finished difference Result 441 states and 485 transitions. [2024-11-16 02:34:44,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-16 02:34:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.75) internal successors, (304), 64 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2024-11-16 02:34:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:44,088 INFO L225 Difference]: With dead ends: 441 [2024-11-16 02:34:44,088 INFO L226 Difference]: Without dead ends: 430 [2024-11-16 02:34:44,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7476 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2115, Invalid=27641, Unknown=0, NotChecked=0, Total=29756 [2024-11-16 02:34:44,090 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 602 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 4366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:44,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1962 Invalid, 4366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 3899 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-16 02:34:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-16 02:34:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 286. [2024-11-16 02:34:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.0771929824561404) internal successors, (307), 285 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:44,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 307 transitions. [2024-11-16 02:34:44,133 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 307 transitions. Word has length 106 [2024-11-16 02:34:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:44,133 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 307 transitions. [2024-11-16 02:34:44,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.75) internal successors, (304), 64 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 307 transitions. [2024-11-16 02:34:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 02:34:44,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:44,134 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:44,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-16 02:34:44,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:44,335 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:44,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1619926751, now seen corresponding path program 5 times [2024-11-16 02:34:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:44,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740669797] [2024-11-16 02:34:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:44,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:44,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740669797] [2024-11-16 02:34:44,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740669797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:44,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070961779] [2024-11-16 02:34:44,961 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:34:44,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:44,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:44,963 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:44,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-16 02:34:45,169 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-16 02:34:45,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:45,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-16 02:34:45,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:45,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 02:34:45,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-16 02:34:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:46,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:34:46,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2024-11-16 02:34:46,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2024-11-16 02:34:46,218 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:46,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070961779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:34:46,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:34:46,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 22] total 45 [2024-11-16 02:34:46,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062039899] [2024-11-16 02:34:46,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:34:46,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-16 02:34:46,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:34:46,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-16 02:34:46,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2024-11-16 02:34:46,220 INFO L87 Difference]: Start difference. First operand 286 states and 307 transitions. Second operand has 45 states, 45 states have (on average 4.844444444444444) internal successors, (218), 45 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:34:49,027 INFO L93 Difference]: Finished difference Result 426 states and 465 transitions. [2024-11-16 02:34:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-16 02:34:49,028 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.844444444444444) internal successors, (218), 45 states have internal predecessors, (218), 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 106 [2024-11-16 02:34:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:34:49,029 INFO L225 Difference]: With dead ends: 426 [2024-11-16 02:34:49,029 INFO L226 Difference]: Without dead ends: 423 [2024-11-16 02:34:49,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4278 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1154, Invalid=12652, Unknown=0, NotChecked=0, Total=13806 [2024-11-16 02:34:49,030 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 268 mSDsluCounter, 1687 mSDsCounter, 0 mSdLazyCounter, 3834 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 4137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 3834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 02:34:49,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1766 Invalid, 4137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 3834 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 02:34:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-16 02:34:49,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 298. [2024-11-16 02:34:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.0808080808080809) internal successors, (321), 297 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:49,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 321 transitions. [2024-11-16 02:34:49,077 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 321 transitions. Word has length 106 [2024-11-16 02:34:49,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:34:49,077 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 321 transitions. [2024-11-16 02:34:49,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.844444444444444) internal successors, (218), 45 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 02:34:49,078 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 321 transitions. [2024-11-16 02:34:49,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-16 02:34:49,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:34:49,079 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:34:49,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-16 02:34:49,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-16 02:34:49,280 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:34:49,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:34:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash 947597364, now seen corresponding path program 14 times [2024-11-16 02:34:49,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:34:49,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41559653] [2024-11-16 02:34:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:34:49,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:34:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:34:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 22 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:34:49,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:34:49,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41559653] [2024-11-16 02:34:49,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41559653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:34:49,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358591233] [2024-11-16 02:34:49,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:34:49,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:34:49,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:34:49,912 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:34:49,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-16 02:34:50,053 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:34:50,054 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:34:50,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-16 02:34:50,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:34:50,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1