./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_password_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_password_ground.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 3cb77685c99da394e56759788276300560cc521e5b9b98850714a1baff20c383 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-21 20:37:28,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 20:37:28,983 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-21 20:37:28,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 20:37:28,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 20:37:29,015 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 20:37:29,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 20:37:29,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 20:37:29,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-21 20:37:29,022 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-21 20:37:29,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 20:37:29,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 20:37:29,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 20:37:29,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 20:37:29,023 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 20:37:29,023 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 20:37:29,024 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 20:37:29,024 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 20:37:29,024 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 20:37:29,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 20:37:29,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 20:37:29,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 20:37:29,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 20:37:29,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 20:37:29,028 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-21 20:37:29,029 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 20:37:29,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 20:37:29,029 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 20:37:29,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 20:37:29,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 20:37:29,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 20:37:29,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 20:37:29,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:37:29,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 20:37:29,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 20:37:29,032 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 20:37:29,032 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 20:37:29,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 20:37:29,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 20:37:29,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-21 20:37:29,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-21 20:37:29,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-21 20:37:29,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cb77685c99da394e56759788276300560cc521e5b9b98850714a1baff20c383 [2024-11-21 20:37:29,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 20:37:29,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 20:37:29,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 20:37:29,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 20:37:29,240 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 20:37:29,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_password_ground.i [2024-11-21 20:37:30,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-21 20:37:30,653 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 20:37:30,653 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_password_ground.i [2024-11-21 20:37:30,659 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fe1b25c/227184837a604c389fbc52c286a642f0/FLAG737c6cf96 [2024-11-21 20:37:30,670 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fe1b25c/227184837a604c389fbc52c286a642f0 [2024-11-21 20:37:30,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 20:37:30,674 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 20:37:30,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 20:37:30,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 20:37:30,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 20:37:30,679 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452c7a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30, skipping insertion in model container [2024-11-21 20:37:30,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 20:37:30,830 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_password_ground.i[817,830] [2024-11-21 20:37:30,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:37:30,846 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 20:37:30,854 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_password_ground.i[817,830] [2024-11-21 20:37:30,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 20:37:30,870 INFO L204 MainTranslator]: Completed translation [2024-11-21 20:37:30,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30 WrapperNode [2024-11-21 20:37:30,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 20:37:30,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 20:37:30,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 20:37:30,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 20:37:30,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,892 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-11-21 20:37:30,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 20:37:30,892 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 20:37:30,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 20:37:30,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 20:37:30,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,909 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-11-21 20:37:30,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,909 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,915 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,916 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 20:37:30,917 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 20:37:30,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 20:37:30,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 20:37:30,918 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (1/1) ... [2024-11-21 20:37:30,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-21 20:37:30,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:30,940 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) [2024-11-21 20:37:30,942 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 [2024-11-21 20:37:30,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 20:37:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-21 20:37:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-21 20:37:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-21 20:37:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-21 20:37:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-21 20:37:30,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-21 20:37:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-21 20:37:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 20:37:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 20:37:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-21 20:37:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-21 20:37:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-21 20:37:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-21 20:37:31,049 INFO L238 CfgBuilder]: Building ICFG [2024-11-21 20:37:31,050 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 20:37:31,217 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-21 20:37:31,217 INFO L287 CfgBuilder]: Performing block encoding [2024-11-21 20:37:31,226 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-21 20:37:31,228 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-21 20:37:31,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:37:31 BoogieIcfgContainer [2024-11-21 20:37:31,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-21 20:37:31,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-21 20:37:31,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-21 20:37:31,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-21 20:37:31,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:37:30" (1/3) ... [2024-11-21 20:37:31,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68325aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:37:31, skipping insertion in model container [2024-11-21 20:37:31,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:37:30" (2/3) ... [2024-11-21 20:37:31,253 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68325aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:37:31, skipping insertion in model container [2024-11-21 20:37:31,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:37:31" (3/3) ... [2024-11-21 20:37:31,254 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_password_ground.i [2024-11-21 20:37:31,266 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-21 20:37:31,266 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-21 20:37:31,316 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-21 20:37:31,323 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;@33483f83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-21 20:37:31,324 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-21 20:37:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-21 20:37:31,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:31,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:31,335 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:31,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2006075616, now seen corresponding path program 1 times [2024-11-21 20:37:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525230567] [2024-11-21 20:37:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:31,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:31,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-21 20:37:31,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:31,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525230567] [2024-11-21 20:37:31,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525230567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:37:31,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-21 20:37:31,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-21 20:37:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312897977] [2024-11-21 20:37:31,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:37:31,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:37:31,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:31,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:37:31,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-21 20:37:31,552 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:31,597 INFO L93 Difference]: Finished difference Result 41 states and 60 transitions. [2024-11-21 20:37:31,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:37:31,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-21 20:37:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:31,604 INFO L225 Difference]: With dead ends: 41 [2024-11-21 20:37:31,605 INFO L226 Difference]: Without dead ends: 20 [2024-11-21 20:37:31,608 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 [2024-11-21 20:37:31,612 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:31,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 35 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:31,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-21 20:37:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2024-11-21 20:37:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 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) [2024-11-21 20:37:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-21 20:37:31,639 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2024-11-21 20:37:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:31,640 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-21 20:37:31,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,640 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-21 20:37:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-21 20:37:31,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:31,642 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:31,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-21 20:37:31,642 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:31,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -324076335, now seen corresponding path program 1 times [2024-11-21 20:37:31,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:31,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150529794] [2024-11-21 20:37:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:31,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:31,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:31,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150529794] [2024-11-21 20:37:31,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150529794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:31,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084528628] [2024-11-21 20:37:31,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:31,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:31,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:31,775 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) [2024-11-21 20:37:31,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-21 20:37:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:31,850 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:37:31,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:31,869 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-21 20:37:31,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084528628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-21 20:37:31,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-21 20:37:31,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-21 20:37:31,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296582775] [2024-11-21 20:37:31,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-21 20:37:31,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-21 20:37:31,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-21 20:37:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:37:31,873 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:31,883 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2024-11-21 20:37:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-21 20:37:31,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-21 20:37:31,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:31,884 INFO L225 Difference]: With dead ends: 27 [2024-11-21 20:37:31,884 INFO L226 Difference]: Without dead ends: 17 [2024-11-21 20:37:31,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-21 20:37:31,885 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:31,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:31,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-21 20:37:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-21 20:37:31,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2024-11-21 20:37:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-11-21 20:37:31,889 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2024-11-21 20:37:31,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:31,889 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-11-21 20:37:31,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2024-11-21 20:37:31,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-21 20:37:31,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:31,890 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:31,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-21 20:37:32,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:32,091 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:32,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:32,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1450931027, now seen corresponding path program 1 times [2024-11-21 20:37:32,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:32,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011129626] [2024-11-21 20:37:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:32,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:32,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011129626] [2024-11-21 20:37:32,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011129626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:32,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150969948] [2024-11-21 20:37:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:32,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:32,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:32,210 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) [2024-11-21 20:37:32,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-21 20:37:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:32,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-21 20:37:32,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:32,298 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-21 20:37:32,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150969948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:32,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:32,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-21 20:37:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540034043] [2024-11-21 20:37:32,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:32,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-21 20:37:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-21 20:37:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:37:32,326 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:32,375 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-21 20:37:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-21 20:37:32,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-21 20:37:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:32,376 INFO L225 Difference]: With dead ends: 44 [2024-11-21 20:37:32,377 INFO L226 Difference]: Without dead ends: 32 [2024-11-21 20:37:32,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-21 20:37:32,378 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:32,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 40 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:32,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-21 20:37:32,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-21 20:37:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.096774193548387) internal successors, (34), 31 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) [2024-11-21 20:37:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-11-21 20:37:32,383 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 14 [2024-11-21 20:37:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:32,384 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-11-21 20:37:32,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-11-21 20:37:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-21 20:37:32,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:32,384 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:32,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:32,585 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,SelfDestructingSolverStorable2 [2024-11-21 20:37:32,585 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:32,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:32,586 INFO L85 PathProgramCache]: Analyzing trace with hash 443135373, now seen corresponding path program 2 times [2024-11-21 20:37:32,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:32,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435075332] [2024-11-21 20:37:32,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:32,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:32,653 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:32,661 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-21 20:37:32,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435075332] [2024-11-21 20:37:32,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435075332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:32,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76001325] [2024-11-21 20:37:32,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:32,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:32,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:32,833 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) [2024-11-21 20:37:32,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-21 20:37:32,906 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:32,906 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:32,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-21 20:37:32,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-21 20:37:32,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-21 20:37:32,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76001325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:32,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:33,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-21 20:37:33,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507416164] [2024-11-21 20:37:33,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:33,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-21 20:37:33,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:33,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-21 20:37:33,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-21 20:37:33,002 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:33,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:33,076 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2024-11-21 20:37:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-21 20:37:33,077 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 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 29 [2024-11-21 20:37:33,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:33,079 INFO L225 Difference]: With dead ends: 83 [2024-11-21 20:37:33,079 INFO L226 Difference]: Without dead ends: 62 [2024-11-21 20:37:33,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-21 20:37:33,080 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 60 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:33,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 38 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:33,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-21 20:37:33,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-21 20:37:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2024-11-21 20:37:33,087 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 29 [2024-11-21 20:37:33,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:33,087 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2024-11-21 20:37:33,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2024-11-21 20:37:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-21 20:37:33,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:33,089 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:33,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-21 20:37:33,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:33,289 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:33,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:33,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1764901633, now seen corresponding path program 3 times [2024-11-21 20:37:33,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:33,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367830855] [2024-11-21 20:37:33,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:33,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:33,316 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:37:33,318 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-21 20:37:33,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:33,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367830855] [2024-11-21 20:37:33,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367830855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:33,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239367618] [2024-11-21 20:37:33,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:33,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:33,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:33,542 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) [2024-11-21 20:37:33,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-21 20:37:33,663 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-21 20:37:33,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:33,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-21 20:37:33,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-21 20:37:33,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:34,089 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-21 20:37:34,093 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 32 treesize of output 23 [2024-11-21 20:37:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-21 20:37:34,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239367618] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:34,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:34,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2024-11-21 20:37:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786854952] [2024-11-21 20:37:34,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:34,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-21 20:37:34,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:34,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-21 20:37:34,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-21 20:37:34,109 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:34,189 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2024-11-21 20:37:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-21 20:37:34,189 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 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 59 [2024-11-21 20:37:34,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:34,190 INFO L225 Difference]: With dead ends: 68 [2024-11-21 20:37:34,190 INFO L226 Difference]: Without dead ends: 66 [2024-11-21 20:37:34,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-21 20:37:34,191 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:34,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 56 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-21 20:37:34,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-21 20:37:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2024-11-21 20:37:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0476190476190477) internal successors, (66), 63 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2024-11-21 20:37:34,197 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 59 [2024-11-21 20:37:34,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:34,197 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2024-11-21 20:37:34,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2024-11-21 20:37:34,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-21 20:37:34,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:34,199 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:34,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:34,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:34,405 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:34,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:34,405 INFO L85 PathProgramCache]: Analyzing trace with hash 961553207, now seen corresponding path program 1 times [2024-11-21 20:37:34,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:34,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670950367] [2024-11-21 20:37:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:34,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:34,597 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-21 20:37:34,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:34,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670950367] [2024-11-21 20:37:34,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670950367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:34,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389464918] [2024-11-21 20:37:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-21 20:37:34,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:34,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:34,600 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) [2024-11-21 20:37:34,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-21 20:37:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-21 20:37:34,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-21 20:37:34,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-21 20:37:34,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-21 20:37:34,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389464918] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:34,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:34,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-21 20:37:34,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894782932] [2024-11-21 20:37:34,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:34,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-21 20:37:34,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-21 20:37:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:37:34,880 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:35,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:35,033 INFO L93 Difference]: Finished difference Result 165 states and 192 transitions. [2024-11-21 20:37:35,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-21 20:37:35,034 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 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 63 [2024-11-21 20:37:35,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:35,035 INFO L225 Difference]: With dead ends: 165 [2024-11-21 20:37:35,035 INFO L226 Difference]: Without dead ends: 124 [2024-11-21 20:37:35,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-21 20:37:35,036 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 146 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:35,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 51 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-21 20:37:35,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-21 20:37:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.024390243902439) internal successors, (126), 123 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:35,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 126 transitions. [2024-11-21 20:37:35,045 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 126 transitions. Word has length 63 [2024-11-21 20:37:35,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:35,046 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 126 transitions. [2024-11-21 20:37:35,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:35,046 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 126 transitions. [2024-11-21 20:37:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-21 20:37:35,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:35,051 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:35,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:35,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:35,255 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:35,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:35,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1048985057, now seen corresponding path program 2 times [2024-11-21 20:37:35,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:35,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425836202] [2024-11-21 20:37:35,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:35,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:35,304 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:35,304 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2024-11-21 20:37:35,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:35,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425836202] [2024-11-21 20:37:35,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425836202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:35,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803277204] [2024-11-21 20:37:35,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-21 20:37:35,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:35,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:35,977 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) [2024-11-21 20:37:35,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-21 20:37:36,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-21 20:37:36,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:36,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-21 20:37:36,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2024-11-21 20:37:36,182 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 717 trivial. 0 not checked. [2024-11-21 20:37:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803277204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:36,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:36,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-21 20:37:36,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226901663] [2024-11-21 20:37:36,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:36,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-21 20:37:36,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:36,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-21 20:37:36,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:37:36,819 INFO L87 Difference]: Start difference. First operand 124 states and 126 transitions. Second operand has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:37,149 INFO L93 Difference]: Finished difference Result 321 states and 372 transitions. [2024-11-21 20:37:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-21 20:37:37,149 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2024-11-21 20:37:37,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:37,150 INFO L225 Difference]: With dead ends: 321 [2024-11-21 20:37:37,151 INFO L226 Difference]: Without dead ends: 244 [2024-11-21 20:37:37,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-21 20:37:37,155 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 262 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:37,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 98 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-21 20:37:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-21 20:37:37,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2024-11-21 20:37:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.0123456790123457) internal successors, (246), 243 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 246 transitions. [2024-11-21 20:37:37,169 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 246 transitions. Word has length 123 [2024-11-21 20:37:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:37,169 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 246 transitions. [2024-11-21 20:37:37,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 246 transitions. [2024-11-21 20:37:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-21 20:37:37,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:37,172 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:37,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:37,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:37,373 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:37,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:37,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1159667729, now seen corresponding path program 3 times [2024-11-21 20:37:37,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:37,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92031059] [2024-11-21 20:37:37,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:37,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:37,431 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-21 20:37:37,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5269 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 5042 trivial. 0 not checked. [2024-11-21 20:37:37,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92031059] [2024-11-21 20:37:37,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92031059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:37,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933270998] [2024-11-21 20:37:37,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-21 20:37:37,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:37,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:37,834 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) [2024-11-21 20:37:37,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-21 20:37:38,004 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-21 20:37:38,005 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:38,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-21 20:37:38,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:38,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5269 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 5042 trivial. 0 not checked. [2024-11-21 20:37:38,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:39,210 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-21 20:37:39,211 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 36 treesize of output 25 [2024-11-21 20:37:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5269 backedges. 44 proven. 183 refuted. 0 times theorem prover too weak. 5042 trivial. 0 not checked. [2024-11-21 20:37:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933270998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:39,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:39,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2024-11-21 20:37:39,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189187013] [2024-11-21 20:37:39,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:39,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-21 20:37:39,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:39,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-21 20:37:39,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2024-11-21 20:37:39,239 INFO L87 Difference]: Start difference. First operand 244 states and 246 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:39,356 INFO L93 Difference]: Finished difference Result 252 states and 254 transitions. [2024-11-21 20:37:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-21 20:37:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 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 243 [2024-11-21 20:37:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:39,358 INFO L225 Difference]: With dead ends: 252 [2024-11-21 20:37:39,358 INFO L226 Difference]: Without dead ends: 250 [2024-11-21 20:37:39,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 471 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2024-11-21 20:37:39,359 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 53 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:39,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 97 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-21 20:37:39,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-21 20:37:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2024-11-21 20:37:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.0121457489878543) internal successors, (250), 247 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:39,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 250 transitions. [2024-11-21 20:37:39,373 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 250 transitions. Word has length 243 [2024-11-21 20:37:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:39,373 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 250 transitions. [2024-11-21 20:37:39,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:39,373 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 250 transitions. [2024-11-21 20:37:39,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-21 20:37:39,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:39,376 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:39,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:39,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:39,577 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:39,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1486186203, now seen corresponding path program 4 times [2024-11-21 20:37:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:39,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071580930] [2024-11-21 20:37:39,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:37:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:39,662 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:37:39,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5275 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3159 trivial. 0 not checked. [2024-11-21 20:37:41,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:41,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071580930] [2024-11-21 20:37:41,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071580930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:41,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208004812] [2024-11-21 20:37:41,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-21 20:37:41,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:41,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:41,732 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) [2024-11-21 20:37:41,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-21 20:37:41,962 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-21 20:37:41,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:41,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 1192 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-21 20:37:41,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-21 20:37:42,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5275 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3159 trivial. 0 not checked. [2024-11-21 20:37:42,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-21 20:37:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5275 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3159 trivial. 0 not checked. [2024-11-21 20:37:44,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208004812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-21 20:37:44,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-21 20:37:44,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2024-11-21 20:37:44,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2763977] [2024-11-21 20:37:44,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-21 20:37:44,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-21 20:37:44,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-21 20:37:44,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-21 20:37:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-21 20:37:44,162 INFO L87 Difference]: Start difference. First operand 248 states and 250 transitions. Second operand has 96 states, 96 states have (on average 2.09375) internal successors, (201), 96 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:45,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-21 20:37:45,342 INFO L93 Difference]: Finished difference Result 641 states and 740 transitions. [2024-11-21 20:37:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-21 20:37:45,344 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.09375) internal successors, (201), 96 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2024-11-21 20:37:45,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-21 20:37:45,345 INFO L225 Difference]: With dead ends: 641 [2024-11-21 20:37:45,345 INFO L226 Difference]: Without dead ends: 488 [2024-11-21 20:37:45,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-21 20:37:45,348 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 640 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-21 20:37:45,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 138 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-21 20:37:45,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-11-21 20:37:45,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 488. [2024-11-21 20:37:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 1.0061601642710472) internal successors, (490), 487 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:45,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 490 transitions. [2024-11-21 20:37:45,365 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 490 transitions. Word has length 247 [2024-11-21 20:37:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-21 20:37:45,365 INFO L471 AbstractCegarLoop]: Abstraction has 488 states and 490 transitions. [2024-11-21 20:37:45,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.09375) internal successors, (201), 96 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-21 20:37:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 490 transitions. [2024-11-21 20:37:45,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-21 20:37:45,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-21 20:37:45,376 INFO L215 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-21 20:37:45,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-21 20:37:45,580 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,SelfDestructingSolverStorable8 [2024-11-21 20:37:45,580 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-21 20:37:45,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-21 20:37:45,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1385792709, now seen corresponding path program 5 times [2024-11-21 20:37:45,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-21 20:37:45,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99211471] [2024-11-21 20:37:45,581 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:37:45,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-21 20:37:49,791 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2024-11-21 20:37:49,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-21 20:37:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 22051 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-11-21 20:37:56,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-21 20:37:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99211471] [2024-11-21 20:37:56,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99211471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-21 20:37:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536875463] [2024-11-21 20:37:56,188 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-21 20:37:56,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-21 20:37:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-21 20:37:56,190 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) [2024-11-21 20:37:56,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process