./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/eureka_05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/eureka_05.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 06:40:06,516 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 06:40:06,585 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 06:40:06,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 06:40:06,591 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 06:40:06,610 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 06:40:06,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 06:40:06,611 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 06:40:06,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 06:40:06,613 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 06:40:06,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 06:40:06,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 06:40:06,615 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 06:40:06,615 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 06:40:06,617 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 06:40:06,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 06:40:06,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 06:40:06,618 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 06:40:06,618 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 06:40:06,618 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 06:40:06,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 06:40:06,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 06:40:06,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 06:40:06,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 06:40:06,622 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 06:40:06,622 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 06:40:06,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 06:40:06,622 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 06:40:06,623 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 06:40:06,623 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 06:40:06,623 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 06:40:06,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 06:40:06,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:40:06,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 06:40:06,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 06:40:06,627 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 06:40:06,627 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 06:40:06,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 06:40:06,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 06:40:06,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 06:40:06,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 06:40:06,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 06:40:06,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f12ca1e314a03dfb1c8beadd0c1a180c2d2339dd5f3109d5999df06d52395ab [2024-11-16 06:40:06,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 06:40:06,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 06:40:06,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 06:40:06,933 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 06:40:06,933 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 06:40:06,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/eureka_05.i [2024-11-16 06:40:08,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 06:40:08,527 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 06:40:08,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/eureka_05.i [2024-11-16 06:40:08,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11177a3f4/c2395b1fb46d41a68ec50de6239c6c44/FLAGe1620d63e [2024-11-16 06:40:08,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11177a3f4/c2395b1fb46d41a68ec50de6239c6c44 [2024-11-16 06:40:08,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 06:40:08,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 06:40:08,549 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 06:40:08,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 06:40:08,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 06:40:08,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21347bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08, skipping insertion in model container [2024-11-16 06:40:08,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 06:40:08,753 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/loops/eureka_05.i[810,823] [2024-11-16 06:40:08,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:40:08,783 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 06:40:08,797 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/loops/eureka_05.i[810,823] [2024-11-16 06:40:08,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 06:40:08,820 INFO L204 MainTranslator]: Completed translation [2024-11-16 06:40:08,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08 WrapperNode [2024-11-16 06:40:08,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 06:40:08,822 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 06:40:08,822 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 06:40:08,822 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 06:40:08,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,852 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2024-11-16 06:40:08,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 06:40:08,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 06:40:08,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 06:40:08,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 06:40:08,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,863 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,874 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 2, 11]. 73 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 3 writes are split as follows [0, 1, 2]. [2024-11-16 06:40:08,875 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,875 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,883 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,888 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 06:40:08,889 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 06:40:08,889 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 06:40:08,889 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 06:40:08,890 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (1/1) ... [2024-11-16 06:40:08,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 06:40:08,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:08,922 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 06:40:08,929 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 06:40:08,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 06:40:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 06:40:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 06:40:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 06:40:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 06:40:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 06:40:08,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 06:40:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 06:40:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 06:40:08,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 06:40:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 06:40:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 06:40:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 06:40:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 06:40:09,050 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 06:40:09,051 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 06:40:09,254 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-16 06:40:09,254 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 06:40:09,265 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 06:40:09,265 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 06:40:09,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:40:09 BoogieIcfgContainer [2024-11-16 06:40:09,266 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 06:40:09,268 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 06:40:09,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 06:40:09,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 06:40:09,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 06:40:08" (1/3) ... [2024-11-16 06:40:09,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598c1555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:40:09, skipping insertion in model container [2024-11-16 06:40:09,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 06:40:08" (2/3) ... [2024-11-16 06:40:09,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598c1555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 06:40:09, skipping insertion in model container [2024-11-16 06:40:09,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 06:40:09" (3/3) ... [2024-11-16 06:40:09,274 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_05.i [2024-11-16 06:40:09,291 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 06:40:09,292 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 06:40:09,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 06:40:09,338 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;@6aafacdd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 06:40:09,339 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 06:40:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 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 06:40:09,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-16 06:40:09,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:09,348 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:09,349 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:09,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:09,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1088428066, now seen corresponding path program 1 times [2024-11-16 06:40:09,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:09,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536895385] [2024-11-16 06:40:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:09,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:09,497 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 06:40:09,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:09,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536895385] [2024-11-16 06:40:09,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536895385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:40:09,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:40:09,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 06:40:09,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995393478] [2024-11-16 06:40:09,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:40:09,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 06:40:09,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 06:40:09,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 06:40:09,523 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 0 states have call successors, (0), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 06:40:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:09,534 INFO L93 Difference]: Finished difference Result 45 states and 61 transitions. [2024-11-16 06:40:09,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 06:40:09,536 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-16 06:40:09,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:09,540 INFO L225 Difference]: With dead ends: 45 [2024-11-16 06:40:09,540 INFO L226 Difference]: Without dead ends: 20 [2024-11-16 06:40:09,542 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 06:40:09,545 INFO L432 NwaCegarLoop]: 28 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, 28 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 06:40:09,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:40:09,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-16 06:40:09,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-16 06:40:09,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 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 06:40:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-16 06:40:09,568 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2024-11-16 06:40:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:09,569 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-16 06:40:09,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 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 06:40:09,569 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-16 06:40:09,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 06:40:09,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:09,570 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:09,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 06:40:09,570 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:09,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1593229049, now seen corresponding path program 1 times [2024-11-16 06:40:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:09,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603056885] [2024-11-16 06:40:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:09,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:09,655 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 06:40:09,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:09,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603056885] [2024-11-16 06:40:09,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603056885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:40:09,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:40:09,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:40:09,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552874666] [2024-11-16 06:40:09,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:40:09,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 06:40:09,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:09,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 06:40:09,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 06:40:09,659 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 06:40:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:09,676 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2024-11-16 06:40:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 06:40:09,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2024-11-16 06:40:09,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:09,677 INFO L225 Difference]: With dead ends: 38 [2024-11-16 06:40:09,677 INFO L226 Difference]: Without dead ends: 22 [2024-11-16 06:40:09,678 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 06:40:09,679 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:09,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:40:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-16 06:40:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-16 06:40:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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 06:40:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-16 06:40:09,684 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2024-11-16 06:40:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:09,685 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-16 06:40:09,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 06:40:09,685 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-16 06:40:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 06:40:09,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:09,686 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:09,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 06:40:09,687 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:09,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash 718820570, now seen corresponding path program 1 times [2024-11-16 06:40:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:09,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523903494] [2024-11-16 06:40:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:09,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:09,816 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 06:40:09,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:09,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523903494] [2024-11-16 06:40:09,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523903494] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:09,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497353083] [2024-11-16 06:40:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:09,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:09,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:09,821 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 06:40:09,822 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 06:40:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:09,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 06:40:09,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:09,942 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 06:40:09,942 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:09,978 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 06:40:09,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497353083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:09,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:09,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-16 06:40:09,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240089971] [2024-11-16 06:40:09,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:09,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:40:09,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:40:09,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:40:09,984 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 06:40:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:10,030 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-11-16 06:40:10,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 06:40:10,030 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 15 [2024-11-16 06:40:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:10,032 INFO L225 Difference]: With dead ends: 51 [2024-11-16 06:40:10,032 INFO L226 Difference]: Without dead ends: 35 [2024-11-16 06:40:10,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:40:10,035 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 12 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:10,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 67 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:40:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-16 06:40:10,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2024-11-16 06:40:10,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-16 06:40:10,043 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2024-11-16 06:40:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:10,046 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-16 06:40:10,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 06:40:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-16 06:40:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 06:40:10,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:10,048 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:10,066 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 06:40:10,248 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 06:40:10,249 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:10,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:10,250 INFO L85 PathProgramCache]: Analyzing trace with hash -703226627, now seen corresponding path program 2 times [2024-11-16 06:40:10,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:10,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066764171] [2024-11-16 06:40:10,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:10,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 06:40:10,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:10,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066764171] [2024-11-16 06:40:10,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066764171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:40:10,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:40:10,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 06:40:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948694598] [2024-11-16 06:40:10,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:40:10,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 06:40:10,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:10,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 06:40:10,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:40:10,386 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:10,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:10,417 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2024-11-16 06:40:10,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 06:40:10,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 06:40:10,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:10,419 INFO L225 Difference]: With dead ends: 43 [2024-11-16 06:40:10,419 INFO L226 Difference]: Without dead ends: 35 [2024-11-16 06:40:10,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 06:40:10,422 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 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 06:40:10,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:40:10,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-16 06:40:10,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2024-11-16 06:40:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 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 06:40:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-16 06:40:10,431 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 21 [2024-11-16 06:40:10,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:10,432 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-16 06:40:10,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:10,432 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-16 06:40:10,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-16 06:40:10,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:10,433 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:10,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 06:40:10,434 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:10,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:10,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1886749438, now seen corresponding path program 1 times [2024-11-16 06:40:10,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:10,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272790452] [2024-11-16 06:40:10,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:10,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 06:40:10,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:10,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272790452] [2024-11-16 06:40:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272790452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:40:10,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 06:40:10,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 06:40:10,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970208251] [2024-11-16 06:40:10,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:40:10,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 06:40:10,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:10,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 06:40:10,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 06:40:10,621 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:10,679 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-11-16 06:40:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 06:40:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-16 06:40:10,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:10,680 INFO L225 Difference]: With dead ends: 54 [2024-11-16 06:40:10,681 INFO L226 Difference]: Without dead ends: 39 [2024-11-16 06:40:10,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-16 06:40:10,682 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 46 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:10,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 47 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:40:10,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-16 06:40:10,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2024-11-16 06:40:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-16 06:40:10,692 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 26 [2024-11-16 06:40:10,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:10,693 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-16 06:40:10,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:10,693 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-16 06:40:10,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-16 06:40:10,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:10,694 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:10,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 06:40:10,695 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:10,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:10,698 INFO L85 PathProgramCache]: Analyzing trace with hash 274230276, now seen corresponding path program 1 times [2024-11-16 06:40:10,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:10,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585588305] [2024-11-16 06:40:10,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:10,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 06:40:10,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:10,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585588305] [2024-11-16 06:40:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585588305] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799163854] [2024-11-16 06:40:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:10,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:10,839 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 06:40:10,840 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 06:40:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:10,937 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:40:10,939 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:40:10,996 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 06:40:11,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799163854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:11,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:11,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2024-11-16 06:40:11,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351737872] [2024-11-16 06:40:11,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:11,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 06:40:11,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 06:40:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-16 06:40:11,048 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:11,188 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2024-11-16 06:40:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 06:40:11,188 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-16 06:40:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:11,189 INFO L225 Difference]: With dead ends: 94 [2024-11-16 06:40:11,191 INFO L226 Difference]: Without dead ends: 74 [2024-11-16 06:40:11,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-16 06:40:11,192 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 66 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:11,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 151 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:40:11,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-16 06:40:11,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 41. [2024-11-16 06:40:11,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 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 06:40:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2024-11-16 06:40:11,206 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2024-11-16 06:40:11,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:11,206 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2024-11-16 06:40:11,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2024-11-16 06:40:11,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-16 06:40:11,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:11,209 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:11,225 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 06:40:11,409 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 06:40:11,410 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:11,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:11,410 INFO L85 PathProgramCache]: Analyzing trace with hash 110002556, now seen corresponding path program 2 times [2024-11-16 06:40:11,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:11,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885171694] [2024-11-16 06:40:11,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:11,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-16 06:40:11,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:11,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885171694] [2024-11-16 06:40:11,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885171694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719720506] [2024-11-16 06:40:11,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:40:11,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:11,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:11,562 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 06:40:11,563 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 06:40:11,641 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:40:11,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:40:11,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 06:40:11,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 06:40:11,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-16 06:40:11,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719720506] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:11,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:11,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-16 06:40:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549380356] [2024-11-16 06:40:11,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:11,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 06:40:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:11,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 06:40:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:40:11,816 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 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 06:40:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:12,030 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2024-11-16 06:40:12,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 06:40:12,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 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 37 [2024-11-16 06:40:12,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:12,031 INFO L225 Difference]: With dead ends: 99 [2024-11-16 06:40:12,031 INFO L226 Difference]: Without dead ends: 81 [2024-11-16 06:40:12,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2024-11-16 06:40:12,032 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 141 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:12,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 85 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:40:12,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-16 06:40:12,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2024-11-16 06:40:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.2) internal successors, (90), 75 states have internal predecessors, (90), 0 states have call successors, (0), 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 06:40:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2024-11-16 06:40:12,042 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 37 [2024-11-16 06:40:12,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:12,042 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2024-11-16 06:40:12,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 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 06:40:12,043 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2024-11-16 06:40:12,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-16 06:40:12,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:12,044 INFO L215 NwaCegarLoop]: trace histogram [12, 9, 9, 9, 6, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:12,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-16 06:40:12,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:12,245 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:12,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash 760292519, now seen corresponding path program 3 times [2024-11-16 06:40:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:12,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491700944] [2024-11-16 06:40:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:12,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-16 06:40:12,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491700944] [2024-11-16 06:40:12,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491700944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780210883] [2024-11-16 06:40:12,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:40:12,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:12,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:12,447 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 06:40:12,452 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 06:40:12,535 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 06:40:12,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:40:12,536 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 06:40:12,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:12,577 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 11 [2024-11-16 06:40:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-16 06:40:12,776 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 06:40:12,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780210883] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 06:40:12,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 06:40:12,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-16 06:40:12,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366047643] [2024-11-16 06:40:12,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 06:40:12,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 06:40:12,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:12,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 06:40:12,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-16 06:40:12,780 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:12,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:12,839 INFO L93 Difference]: Finished difference Result 83 states and 97 transitions. [2024-11-16 06:40:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 06:40:12,839 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-16 06:40:12,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:12,841 INFO L225 Difference]: With dead ends: 83 [2024-11-16 06:40:12,842 INFO L226 Difference]: Without dead ends: 80 [2024-11-16 06:40:12,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:40:12,843 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 21 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:12,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 62 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:40:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-16 06:40:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2024-11-16 06:40:12,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 78 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2024-11-16 06:40:12,855 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 74 [2024-11-16 06:40:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:12,855 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2024-11-16 06:40:12,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2024-11-16 06:40:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-16 06:40:12,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:12,857 INFO L215 NwaCegarLoop]: trace histogram [12, 9, 9, 9, 6, 5, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:12,874 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 06:40:13,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:13,061 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:13,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:13,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1311063311, now seen corresponding path program 1 times [2024-11-16 06:40:13,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:13,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929698051] [2024-11-16 06:40:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:13,207 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-16 06:40:13,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:13,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929698051] [2024-11-16 06:40:13,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929698051] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:13,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128651489] [2024-11-16 06:40:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:13,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:13,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:13,210 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 06:40:13,212 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 06:40:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:13,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 06:40:13,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-16 06:40:13,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:13,694 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-16 06:40:13,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128651489] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:13,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:13,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-16 06:40:13,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748132094] [2024-11-16 06:40:13,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:13,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 06:40:13,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:13,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 06:40:13,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=89, Unknown=0, NotChecked=0, Total=156 [2024-11-16 06:40:13,697 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 12 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 06:40:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:13,758 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2024-11-16 06:40:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 06:40:13,759 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 12 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 78 [2024-11-16 06:40:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:13,760 INFO L225 Difference]: With dead ends: 104 [2024-11-16 06:40:13,760 INFO L226 Difference]: Without dead ends: 93 [2024-11-16 06:40:13,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=105, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:40:13,763 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 64 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:13,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 77 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 06:40:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-16 06:40:13,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-16 06:40:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 92 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 06:40:13,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2024-11-16 06:40:13,781 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 78 [2024-11-16 06:40:13,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:13,782 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2024-11-16 06:40:13,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 12 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 06:40:13,783 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2024-11-16 06:40:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-16 06:40:13,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:13,785 INFO L215 NwaCegarLoop]: trace histogram [14, 9, 9, 9, 6, 6, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:13,802 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 06:40:13,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:13,986 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:13,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1864571823, now seen corresponding path program 2 times [2024-11-16 06:40:13,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890797889] [2024-11-16 06:40:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:14,157 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 48 proven. 185 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-16 06:40:14,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:14,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890797889] [2024-11-16 06:40:14,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890797889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:14,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453156427] [2024-11-16 06:40:14,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:40:14,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:14,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:14,160 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 06:40:14,161 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 06:40:14,267 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:40:14,267 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:40:14,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 06:40:14,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 48 proven. 185 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-16 06:40:14,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 48 proven. 185 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-16 06:40:14,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453156427] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:14,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:14,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-16 06:40:14,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605378707] [2024-11-16 06:40:14,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:14,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 06:40:14,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 06:40:14,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-16 06:40:14,648 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 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 06:40:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:14,804 INFO L93 Difference]: Finished difference Result 118 states and 141 transitions. [2024-11-16 06:40:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 06:40:14,805 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 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 88 [2024-11-16 06:40:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:14,806 INFO L225 Difference]: With dead ends: 118 [2024-11-16 06:40:14,806 INFO L226 Difference]: Without dead ends: 97 [2024-11-16 06:40:14,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 164 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=175, Invalid=331, Unknown=0, NotChecked=0, Total=506 [2024-11-16 06:40:14,807 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:14,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 121 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:40:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-16 06:40:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2024-11-16 06:40:14,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.202127659574468) internal successors, (113), 94 states have internal predecessors, (113), 0 states have call successors, (0), 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 06:40:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 113 transitions. [2024-11-16 06:40:14,825 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 113 transitions. Word has length 88 [2024-11-16 06:40:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:14,825 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 113 transitions. [2024-11-16 06:40:14,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 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 06:40:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 113 transitions. [2024-11-16 06:40:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 06:40:14,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:14,829 INFO L215 NwaCegarLoop]: trace histogram [15, 10, 10, 10, 6, 6, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:14,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 06:40:15,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:15,034 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:15,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:15,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1801860627, now seen corresponding path program 3 times [2024-11-16 06:40:15,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:15,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612725292] [2024-11-16 06:40:15,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:15,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:15,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-16 06:40:15,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:15,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612725292] [2024-11-16 06:40:15,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612725292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:15,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974933736] [2024-11-16 06:40:15,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:40:15,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:15,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:15,882 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 06:40:15,883 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 06:40:15,971 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-16 06:40:15,971 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:40:15,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-16 06:40:15,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:15,997 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 17 treesize of output 13 [2024-11-16 06:40:16,027 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 33 treesize of output 17 [2024-11-16 06:40:16,342 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-16 06:40:16,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2024-11-16 06:40:16,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974933736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:16,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:16,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 22 [2024-11-16 06:40:16,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539149073] [2024-11-16 06:40:16,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:16,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-16 06:40:16,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:16,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-16 06:40:16,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2024-11-16 06:40:16,570 INFO L87 Difference]: Start difference. First operand 95 states and 113 transitions. Second operand has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 0 states have call successors, (0), 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 06:40:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:17,043 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2024-11-16 06:40:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 06:40:17,043 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 0 states have call successors, (0), 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 92 [2024-11-16 06:40:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:17,044 INFO L225 Difference]: With dead ends: 133 [2024-11-16 06:40:17,044 INFO L226 Difference]: Without dead ends: 130 [2024-11-16 06:40:17,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=270, Invalid=920, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 06:40:17,046 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 106 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:17,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 324 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:40:17,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-16 06:40:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 99. [2024-11-16 06:40:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 98 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 06:40:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2024-11-16 06:40:17,063 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 92 [2024-11-16 06:40:17,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:17,063 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2024-11-16 06:40:17,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 22 states have internal predecessors, (80), 0 states have call successors, (0), 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 06:40:17,063 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2024-11-16 06:40:17,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-16 06:40:17,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:17,067 INFO L215 NwaCegarLoop]: trace histogram [15, 10, 10, 10, 6, 6, 5, 5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:17,084 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 06:40:17,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:17,268 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:17,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:17,269 INFO L85 PathProgramCache]: Analyzing trace with hash -361902251, now seen corresponding path program 4 times [2024-11-16 06:40:17,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:17,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266444019] [2024-11-16 06:40:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:17,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:19,130 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 137 proven. 181 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-16 06:40:19,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266444019] [2024-11-16 06:40:19,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266444019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:19,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518468563] [2024-11-16 06:40:19,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:40:19,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:19,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:19,133 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 06:40:19,134 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 06:40:19,245 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:40:19,245 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:40:19,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-16 06:40:19,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:19,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:40:19,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 31 [2024-11-16 06:40:20,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:40:20,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 22 [2024-11-16 06:40:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 177 proven. 94 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-16 06:40:20,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:21,541 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 246 treesize of output 216 [2024-11-16 06:40:21,638 INFO L349 Elim1Store]: treesize reduction 5, result has 95.2 percent of original size [2024-11-16 06:40:21,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 260 treesize of output 257 [2024-11-16 06:40:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 190 proven. 81 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-16 06:40:23,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518468563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:23,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:23,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 18] total 54 [2024-11-16 06:40:23,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733021898] [2024-11-16 06:40:23,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:23,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-16 06:40:23,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:23,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-16 06:40:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=2601, Unknown=0, NotChecked=0, Total=2862 [2024-11-16 06:40:23,520 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 54 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:38,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:38,851 INFO L93 Difference]: Finished difference Result 734 states and 962 transitions. [2024-11-16 06:40:38,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-11-16 06:40:38,852 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 54 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-11-16 06:40:38,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:38,855 INFO L225 Difference]: With dead ends: 734 [2024-11-16 06:40:38,855 INFO L226 Difference]: Without dead ends: 663 [2024-11-16 06:40:38,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10842 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=3198, Invalid=30474, Unknown=0, NotChecked=0, Total=33672 [2024-11-16 06:40:38,862 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 698 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 2370 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 2370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:38,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1092 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 2370 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-16 06:40:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-16 06:40:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 447. [2024-11-16 06:40:38,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.3340807174887892) internal successors, (595), 446 states have internal predecessors, (595), 0 states have call successors, (0), 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 06:40:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 595 transitions. [2024-11-16 06:40:38,930 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 595 transitions. Word has length 96 [2024-11-16 06:40:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:38,931 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 595 transitions. [2024-11-16 06:40:38,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.685185185185185) internal successors, (145), 54 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 595 transitions. [2024-11-16 06:40:38,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-16 06:40:38,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:38,933 INFO L215 NwaCegarLoop]: trace histogram [15, 10, 10, 7, 6, 6, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:38,951 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 06:40:39,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 06:40:39,134 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:39,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:39,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1130535700, now seen corresponding path program 1 times [2024-11-16 06:40:39,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:39,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875078224] [2024-11-16 06:40:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:39,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 182 proven. 115 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-16 06:40:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:40,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875078224] [2024-11-16 06:40:40,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875078224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:40,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112779227] [2024-11-16 06:40:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:40,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:40,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:40,232 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 06:40:40,233 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 06:40:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:40,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 06:40:40,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:40,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:40:40,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 18 [2024-11-16 06:40:40,728 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 143 proven. 21 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-16 06:40:40,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 147 proven. 17 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-16 06:40:41,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112779227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:41,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:41,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 35 [2024-11-16 06:40:41,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772854947] [2024-11-16 06:40:41,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:41,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-16 06:40:41,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:41,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-16 06:40:41,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1119, Unknown=0, NotChecked=0, Total=1260 [2024-11-16 06:40:41,040 INFO L87 Difference]: Start difference. First operand 447 states and 595 transitions. Second operand has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 35 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:42,297 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2024-11-16 06:40:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-16 06:40:42,297 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 35 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-11-16 06:40:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:42,300 INFO L225 Difference]: With dead ends: 850 [2024-11-16 06:40:42,300 INFO L226 Difference]: Without dead ends: 601 [2024-11-16 06:40:42,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=654, Invalid=3636, Unknown=0, NotChecked=0, Total=4290 [2024-11-16 06:40:42,303 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 136 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:42,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 477 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 06:40:42,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2024-11-16 06:40:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 495. [2024-11-16 06:40:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.325910931174089) internal successors, (655), 494 states have internal predecessors, (655), 0 states have call successors, (0), 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 06:40:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 655 transitions. [2024-11-16 06:40:42,360 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 655 transitions. Word has length 96 [2024-11-16 06:40:42,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:42,361 INFO L471 AbstractCegarLoop]: Abstraction has 495 states and 655 transitions. [2024-11-16 06:40:42,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.9722222222222223) internal successors, (107), 35 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 655 transitions. [2024-11-16 06:40:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-16 06:40:42,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:42,363 INFO L215 NwaCegarLoop]: trace histogram [15, 10, 10, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:42,378 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 06:40:42,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 06:40:42,567 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:42,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:42,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1104137993, now seen corresponding path program 2 times [2024-11-16 06:40:42,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:42,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749057195] [2024-11-16 06:40:42,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:42,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-16 06:40:43,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749057195] [2024-11-16 06:40:43,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749057195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:43,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320848832] [2024-11-16 06:40:43,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 06:40:43,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:43,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:43,227 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 06:40:43,229 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 06:40:43,341 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 06:40:43,341 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:40:43,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 06:40:43,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:43,572 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:40:43,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2024-11-16 06:40:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-16 06:40:43,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2024-11-16 06:40:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320848832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:43,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:43,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 7] total 25 [2024-11-16 06:40:43,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270806012] [2024-11-16 06:40:43,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:43,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-16 06:40:43,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-16 06:40:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2024-11-16 06:40:43,694 INFO L87 Difference]: Start difference. First operand 495 states and 655 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:44,295 INFO L93 Difference]: Finished difference Result 900 states and 1182 transitions. [2024-11-16 06:40:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 06:40:44,296 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2024-11-16 06:40:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:44,298 INFO L225 Difference]: With dead ends: 900 [2024-11-16 06:40:44,298 INFO L226 Difference]: Without dead ends: 539 [2024-11-16 06:40:44,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1783, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 06:40:44,300 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 188 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:44,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 458 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 06:40:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-16 06:40:44,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 488. [2024-11-16 06:40:44,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.326488706365503) internal successors, (646), 487 states have internal predecessors, (646), 0 states have call successors, (0), 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 06:40:44,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 646 transitions. [2024-11-16 06:40:44,386 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 646 transitions. Word has length 96 [2024-11-16 06:40:44,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:44,386 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 646 transitions. [2024-11-16 06:40:44,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 25 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 646 transitions. [2024-11-16 06:40:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-16 06:40:44,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:44,388 INFO L215 NwaCegarLoop]: trace histogram [15, 10, 10, 7, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:44,405 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 06:40:44,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-16 06:40:44,589 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:44,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:44,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1000134080, now seen corresponding path program 3 times [2024-11-16 06:40:44,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:44,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446930779] [2024-11-16 06:40:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 2 proven. 211 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-16 06:40:45,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446930779] [2024-11-16 06:40:45,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446930779] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:45,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257231273] [2024-11-16 06:40:45,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 06:40:45,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:45,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:45,421 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 06:40:45,422 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 06:40:45,543 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-16 06:40:45,543 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:40:45,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 06:40:45,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:45,589 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 06:40:45,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-16 06:40:45,619 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 27 treesize of output 11 [2024-11-16 06:40:45,645 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-16 06:40:45,645 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 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-16 06:40:45,688 INFO L349 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2024-11-16 06:40:45,688 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 1 case distinctions, treesize of input 31 treesize of output 19 [2024-11-16 06:40:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2024-11-16 06:40:46,008 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:46,318 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 23 treesize of output 21 [2024-11-16 06:40:46,321 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 46 treesize of output 42 [2024-11-16 06:40:46,361 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2024-11-16 06:40:46,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257231273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:46,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:46,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2024-11-16 06:40:46,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436217271] [2024-11-16 06:40:46,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:46,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-16 06:40:46,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:46,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-16 06:40:46,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2024-11-16 06:40:46,364 INFO L87 Difference]: Start difference. First operand 488 states and 646 transitions. Second operand has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:40:46,773 INFO L93 Difference]: Finished difference Result 510 states and 668 transitions. [2024-11-16 06:40:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 06:40:46,773 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-16 06:40:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:40:46,775 INFO L225 Difference]: With dead ends: 510 [2024-11-16 06:40:46,776 INFO L226 Difference]: Without dead ends: 507 [2024-11-16 06:40:46,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 185 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=415, Invalid=1655, Unknown=0, NotChecked=0, Total=2070 [2024-11-16 06:40:46,777 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 125 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 06:40:46,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 352 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 06:40:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-16 06:40:46,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 492. [2024-11-16 06:40:46,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 1.3238289205702647) internal successors, (650), 491 states have internal predecessors, (650), 0 states have call successors, (0), 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 06:40:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 650 transitions. [2024-11-16 06:40:46,833 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 650 transitions. Word has length 100 [2024-11-16 06:40:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:40:46,833 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 650 transitions. [2024-11-16 06:40:46,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.40625) internal successors, (109), 32 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 06:40:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 650 transitions. [2024-11-16 06:40:46,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-16 06:40:46,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:40:46,837 INFO L215 NwaCegarLoop]: trace histogram [15, 10, 10, 7, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:40:46,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-16 06:40:47,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-16 06:40:47,041 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:40:47,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:40:47,041 INFO L85 PathProgramCache]: Analyzing trace with hash -24069720, now seen corresponding path program 4 times [2024-11-16 06:40:47,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:40:47,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499865267] [2024-11-16 06:40:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:40:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:40:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:40:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 6 proven. 70 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-16 06:40:47,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:40:47,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499865267] [2024-11-16 06:40:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499865267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:40:47,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32988731] [2024-11-16 06:40:47,826 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 06:40:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:40:47,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:40:47,827 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 06:40:47,828 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 06:40:47,928 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 06:40:47,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:40:47,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-16 06:40:47,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:40:48,067 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 28 treesize of output 7 [2024-11-16 06:40:48,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:40:48,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 33 [2024-11-16 06:40:48,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:40:48,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 17 [2024-11-16 06:40:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 137 proven. 179 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-16 06:40:48,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:40:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 244 proven. 40 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-16 06:40:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32988731] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:40:49,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:40:49,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 14] total 47 [2024-11-16 06:40:49,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989661035] [2024-11-16 06:40:49,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:40:49,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-16 06:40:49,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:40:49,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-16 06:40:49,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1999, Unknown=0, NotChecked=0, Total=2162 [2024-11-16 06:40:49,181 INFO L87 Difference]: Start difference. First operand 492 states and 650 transitions. Second operand has 47 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 47 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 06:40:57,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 06:41:01,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 06:41:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 06:41:11,017 INFO L93 Difference]: Finished difference Result 991 states and 1327 transitions. [2024-11-16 06:41:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-16 06:41:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 47 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) Word has length 104 [2024-11-16 06:41:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 06:41:11,022 INFO L225 Difference]: With dead ends: 991 [2024-11-16 06:41:11,022 INFO L226 Difference]: Without dead ends: 850 [2024-11-16 06:41:11,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3346 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1113, Invalid=11096, Unknown=1, NotChecked=0, Total=12210 [2024-11-16 06:41:11,027 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 165 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1827 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1827 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-16 06:41:11,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1078 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1827 Invalid, 1 Unknown, 0 Unchecked, 10.4s Time] [2024-11-16 06:41:11,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-16 06:41:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 653. [2024-11-16 06:41:11,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 1.3297546012269938) internal successors, (867), 652 states have internal predecessors, (867), 0 states have call successors, (0), 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 06:41:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 867 transitions. [2024-11-16 06:41:11,164 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 867 transitions. Word has length 104 [2024-11-16 06:41:11,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 06:41:11,164 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 867 transitions. [2024-11-16 06:41:11,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.2127659574468086) internal successors, (151), 47 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 06:41:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 867 transitions. [2024-11-16 06:41:11,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-16 06:41:11,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 06:41:11,167 INFO L215 NwaCegarLoop]: trace histogram [15, 10, 10, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 06:41:11,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-16 06:41:11,367 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,SelfDestructingSolverStorable15 [2024-11-16 06:41:11,367 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 06:41:11,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 06:41:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash 286953425, now seen corresponding path program 5 times [2024-11-16 06:41:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 06:41:11,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64365677] [2024-11-16 06:41:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 06:41:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 06:41:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 06:41:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-16 06:41:11,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 06:41:11,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64365677] [2024-11-16 06:41:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64365677] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 06:41:11,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187193312] [2024-11-16 06:41:11,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 06:41:11,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 06:41:11,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 06:41:11,489 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 06:41:11,489 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 06:41:11,639 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-16 06:41:11,639 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 06:41:11,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-16 06:41:11,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 06:41:11,765 INFO L349 Elim1Store]: treesize reduction 28, result has 37.8 percent of original size [2024-11-16 06:41:11,766 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 1 case distinctions, treesize of input 41 treesize of output 17 [2024-11-16 06:41:12,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:41:12,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 86 treesize of output 29 [2024-11-16 06:41:12,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:41:12,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 84 treesize of output 29 [2024-11-16 06:41:12,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 06:41:12,331 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 46 treesize of output 12 [2024-11-16 06:41:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 130 proven. 201 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-16 06:41:12,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 06:41:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 218 proven. 80 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-16 06:41:13,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187193312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 06:41:13,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 06:41:13,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 24, 16] total 44 [2024-11-16 06:41:13,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033685301] [2024-11-16 06:41:13,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 06:41:13,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 06:41:13,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 06:41:13,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 06:41:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1683, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 06:41:13,553 INFO L87 Difference]: Start difference. First operand 653 states and 867 transitions. Second operand has 44 states, 44 states have (on average 3.090909090909091) internal successors, (136), 44 states have internal predecessors, (136), 0 states have call successors, (0), 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 06:41:26,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 06:41:30,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-16 06:41:34,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]