./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-59.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 e71601c55174be0ad57296dccc2279fd85b1f2c03bb5913dfcee88384188d311 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 19:23:24,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 19:23:24,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 19:23:24,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 19:23:24,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 19:23:24,813 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 19:23:24,814 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 19:23:24,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 19:23:24,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 19:23:24,815 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 19:23:24,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 19:23:24,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 19:23:24,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 19:23:24,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 19:23:24,818 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 19:23:24,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 19:23:24,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 19:23:24,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 19:23:24,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 19:23:24,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 19:23:24,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 19:23:24,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 19:23:24,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 19:23:24,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 19:23:24,823 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 19:23:24,823 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 19:23:24,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 19:23:24,823 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 19:23:24,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 19:23:24,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 19:23:24,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 19:23:24,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 19:23:24,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:23:24,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 19:23:24,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 19:23:24,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 19:23:24,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 19:23:24,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 19:23:24,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 19:23:24,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 19:23:24,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 19:23:24,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 19:23:24,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e71601c55174be0ad57296dccc2279fd85b1f2c03bb5913dfcee88384188d311 [2024-11-18 19:23:25,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 19:23:25,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 19:23:25,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 19:23:25,053 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 19:23:25,053 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 19:23:25,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-59.i [2024-11-18 19:23:26,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 19:23:26,552 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 19:23:26,553 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-59.i [2024-11-18 19:23:26,561 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0858fe98/94933bef19594feb8f130a4d899d0e20/FLAG38bbb801f [2024-11-18 19:23:26,956 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0858fe98/94933bef19594feb8f130a4d899d0e20 [2024-11-18 19:23:26,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 19:23:26,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 19:23:26,960 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 19:23:26,960 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 19:23:26,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 19:23:26,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:23:26" (1/1) ... [2024-11-18 19:23:26,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13fb110e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:26, skipping insertion in model container [2024-11-18 19:23:26,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:23:26" (1/1) ... [2024-11-18 19:23:26,993 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 19:23:27,124 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-59.i[915,928] [2024-11-18 19:23:27,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:23:27,190 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 19:23:27,199 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/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-59.i[915,928] [2024-11-18 19:23:27,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 19:23:27,239 INFO L204 MainTranslator]: Completed translation [2024-11-18 19:23:27,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27 WrapperNode [2024-11-18 19:23:27,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 19:23:27,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 19:23:27,243 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 19:23:27,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 19:23:27,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,296 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 169 [2024-11-18 19:23:27,296 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 19:23:27,297 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 19:23:27,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 19:23:27,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 19:23:27,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,310 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,331 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-18 19:23:27,332 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,332 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,358 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 19:23:27,358 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 19:23:27,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 19:23:27,359 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 19:23:27,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (1/1) ... [2024-11-18 19:23:27,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 19:23:27,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:23:27,387 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) [2024-11-18 19:23:27,389 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 [2024-11-18 19:23:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 19:23:27,423 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 19:23:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 19:23:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 19:23:27,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 19:23:27,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 19:23:27,489 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 19:23:27,490 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 19:23:27,927 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-18 19:23:27,928 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 19:23:27,949 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 19:23:27,949 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 19:23:27,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:23:27 BoogieIcfgContainer [2024-11-18 19:23:27,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 19:23:27,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 19:23:27,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 19:23:27,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 19:23:27,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:23:26" (1/3) ... [2024-11-18 19:23:27,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360d4d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:23:27, skipping insertion in model container [2024-11-18 19:23:27,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:23:27" (2/3) ... [2024-11-18 19:23:27,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360d4d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:23:27, skipping insertion in model container [2024-11-18 19:23:27,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:23:27" (3/3) ... [2024-11-18 19:23:27,973 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-59.i [2024-11-18 19:23:27,990 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 19:23:27,991 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 19:23:28,058 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 19:23:28,064 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;@643e9d08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 19:23:28,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 19:23:28,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 19:23:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 19:23:28,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:23:28,086 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:23:28,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:23:28,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:23:28,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1896989184, now seen corresponding path program 1 times [2024-11-18 19:23:28,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:23:28,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617127293] [2024-11-18 19:23:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:28,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:23:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:23:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-18 19:23:28,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:23:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617127293] [2024-11-18 19:23:28,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617127293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:23:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448805840] [2024-11-18 19:23:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:28,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:23:28,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:23:28,429 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) [2024-11-18 19:23:28,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 19:23:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:23:28,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 19:23:28,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:23:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-18 19:23:28,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 19:23:28,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448805840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:23:28,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:23:28,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 19:23:28,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351514896] [2024-11-18 19:23:28,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:23:28,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 19:23:28,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:23:28,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 19:23:28,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:23:28,639 INFO L87 Difference]: Start difference. First operand has 70 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 19:23:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:23:28,660 INFO L93 Difference]: Finished difference Result 133 states and 225 transitions. [2024-11-18 19:23:28,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 19:23:28,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 139 [2024-11-18 19:23:28,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:23:28,675 INFO L225 Difference]: With dead ends: 133 [2024-11-18 19:23:28,675 INFO L226 Difference]: Without dead ends: 66 [2024-11-18 19:23:28,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 19:23:28,680 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 19:23:28,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 19:23:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-18 19:23:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-18 19:23:28,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-18 19:23:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 98 transitions. [2024-11-18 19:23:28,718 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 98 transitions. Word has length 139 [2024-11-18 19:23:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:23:28,719 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 98 transitions. [2024-11-18 19:23:28,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.5) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-18 19:23:28,719 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 98 transitions. [2024-11-18 19:23:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-18 19:23:28,721 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:23:28,721 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:23:28,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 19:23:28,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-18 19:23:28,926 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:23:28,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:23:28,927 INFO L85 PathProgramCache]: Analyzing trace with hash 2124689522, now seen corresponding path program 1 times [2024-11-18 19:23:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:23:28,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229663916] [2024-11-18 19:23:28,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:28,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:23:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:23:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 19:23:29,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:23:29,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229663916] [2024-11-18 19:23:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229663916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:23:29,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:23:29,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:23:29,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666746792] [2024-11-18 19:23:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:23:29,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:23:29,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:23:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:23:29,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:23:29,323 INFO L87 Difference]: Start difference. First operand 66 states and 98 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 19:23:29,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:23:29,452 INFO L93 Difference]: Finished difference Result 193 states and 289 transitions. [2024-11-18 19:23:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:23:29,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 139 [2024-11-18 19:23:29,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:23:29,457 INFO L225 Difference]: With dead ends: 193 [2024-11-18 19:23:29,457 INFO L226 Difference]: Without dead ends: 130 [2024-11-18 19:23:29,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:23:29,461 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 64 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:23:29,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 278 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:23:29,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-18 19:23:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 111. [2024-11-18 19:23:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 42 states have call successors, (42), 2 states have call predecessors, (42), 2 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 19:23:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 165 transitions. [2024-11-18 19:23:29,486 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 165 transitions. Word has length 139 [2024-11-18 19:23:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:23:29,486 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 165 transitions. [2024-11-18 19:23:29,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 19:23:29,487 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 165 transitions. [2024-11-18 19:23:29,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-18 19:23:29,488 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:23:29,488 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:23:29,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 19:23:29,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:23:29,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:23:29,489 INFO L85 PathProgramCache]: Analyzing trace with hash -811586618, now seen corresponding path program 1 times [2024-11-18 19:23:29,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:23:29,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842276679] [2024-11-18 19:23:29,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:29,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:23:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:23:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-18 19:23:29,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:23:29,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842276679] [2024-11-18 19:23:29,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842276679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 19:23:29,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 19:23:29,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 19:23:29,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463317284] [2024-11-18 19:23:29,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 19:23:29,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 19:23:29,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:23:29,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 19:23:29,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 19:23:29,758 INFO L87 Difference]: Start difference. First operand 111 states and 165 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 19:23:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:23:29,888 INFO L93 Difference]: Finished difference Result 247 states and 367 transitions. [2024-11-18 19:23:29,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 19:23:29,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 140 [2024-11-18 19:23:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:23:29,891 INFO L225 Difference]: With dead ends: 247 [2024-11-18 19:23:29,893 INFO L226 Difference]: Without dead ends: 184 [2024-11-18 19:23:29,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 19:23:29,894 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 79 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 19:23:29,896 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 276 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 19:23:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-18 19:23:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 172. [2024-11-18 19:23:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 105 states have internal predecessors, (131), 63 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2024-11-18 19:23:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 257 transitions. [2024-11-18 19:23:29,924 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 257 transitions. Word has length 140 [2024-11-18 19:23:29,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:23:29,925 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 257 transitions. [2024-11-18 19:23:29,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-18 19:23:29,925 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 257 transitions. [2024-11-18 19:23:29,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 19:23:29,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:23:29,927 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:23:29,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 19:23:29,927 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:23:29,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:23:29,927 INFO L85 PathProgramCache]: Analyzing trace with hash 229394467, now seen corresponding path program 1 times [2024-11-18 19:23:29,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:23:29,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800191794] [2024-11-18 19:23:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:29,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:23:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:23:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 19:23:30,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:23:30,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800191794] [2024-11-18 19:23:30,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800191794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:23:30,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978565546] [2024-11-18 19:23:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:30,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:23:30,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:23:30,325 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) [2024-11-18 19:23:30,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-18 19:23:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:23:30,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-18 19:23:30,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:23:30,603 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 428 proven. 24 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2024-11-18 19:23:30,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:23:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 36 proven. 24 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2024-11-18 19:23:30,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978565546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 19:23:30,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 19:23:30,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-18 19:23:30,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575526427] [2024-11-18 19:23:30,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 19:23:30,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-18 19:23:30,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:23:30,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-18 19:23:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-18 19:23:30,772 INFO L87 Difference]: Start difference. First operand 172 states and 257 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 19:23:31,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:23:31,209 INFO L93 Difference]: Finished difference Result 472 states and 680 transitions. [2024-11-18 19:23:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 19:23:31,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 141 [2024-11-18 19:23:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:23:31,212 INFO L225 Difference]: With dead ends: 472 [2024-11-18 19:23:31,212 INFO L226 Difference]: Without dead ends: 348 [2024-11-18 19:23:31,213 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-18 19:23:31,214 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 308 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:23:31,214 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 275 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:23:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2024-11-18 19:23:31,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 270. [2024-11-18 19:23:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 173 states have (on average 1.2023121387283238) internal successors, (208), 175 states have internal predecessors, (208), 87 states have call successors, (87), 9 states have call predecessors, (87), 9 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-18 19:23:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 382 transitions. [2024-11-18 19:23:31,261 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 382 transitions. Word has length 141 [2024-11-18 19:23:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:23:31,262 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 382 transitions. [2024-11-18 19:23:31,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 19:23:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 382 transitions. [2024-11-18 19:23:31,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 19:23:31,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:23:31,266 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:23:31,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-18 19:23:31,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-18 19:23:31,471 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:23:31,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:23:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2004401829, now seen corresponding path program 1 times [2024-11-18 19:23:31,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:23:31,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319598303] [2024-11-18 19:23:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:31,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:23:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 19:23:31,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333915161] [2024-11-18 19:23:31,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:31,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:23:31,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:23:31,645 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) [2024-11-18 19:23:31,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-18 19:23:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:23:31,741 INFO L255 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-18 19:23:31,745 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:23:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 210 proven. 144 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2024-11-18 19:23:33,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:23:44,679 WARN L286 SmtUtils]: Spent 5.11s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-18 19:23:52,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 19:23:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319598303] [2024-11-18 19:23:52,407 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 19:23:52,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333915161] [2024-11-18 19:23:52,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333915161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 19:23:52,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 19:23:52,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-18 19:23:52,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659821886] [2024-11-18 19:23:52,408 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 19:23:52,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 19:23:52,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 19:23:52,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 19:23:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2024-11-18 19:23:52,410 INFO L87 Difference]: Start difference. First operand 270 states and 382 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 12 states have internal predecessors, (51), 4 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-18 19:23:53,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 19:23:53,017 INFO L93 Difference]: Finished difference Result 536 states and 730 transitions. [2024-11-18 19:23:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-18 19:23:53,018 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 12 states have internal predecessors, (51), 4 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 141 [2024-11-18 19:23:53,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 19:23:53,021 INFO L225 Difference]: With dead ends: 536 [2024-11-18 19:23:53,021 INFO L226 Difference]: Without dead ends: 322 [2024-11-18 19:23:53,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2024-11-18 19:23:53,023 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 63 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 19:23:53,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 399 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 19:23:53,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-18 19:23:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 306. [2024-11-18 19:23:53,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 200 states have (on average 1.165) internal successors, (233), 202 states have internal predecessors, (233), 87 states have call successors, (87), 18 states have call predecessors, (87), 18 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-18 19:23:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 407 transitions. [2024-11-18 19:23:53,046 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 407 transitions. Word has length 141 [2024-11-18 19:23:53,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 19:23:53,046 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 407 transitions. [2024-11-18 19:23:53,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 12 states have internal predecessors, (51), 4 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2024-11-18 19:23:53,047 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 407 transitions. [2024-11-18 19:23:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-18 19:23:53,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 19:23:53,048 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 19:23:53,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-18 19:23:53,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:23:53,249 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 19:23:53,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 19:23:53,250 INFO L85 PathProgramCache]: Analyzing trace with hash -28770971, now seen corresponding path program 1 times [2024-11-18 19:23:53,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 19:23:53,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625100329] [2024-11-18 19:23:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 19:23:53,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 19:23:53,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766867355] [2024-11-18 19:23:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 19:23:53,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 19:23:53,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 19:23:53,314 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) [2024-11-18 19:23:53,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-18 19:23:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 19:23:53,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-18 19:23:53,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 19:23:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 260 proven. 210 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2024-11-18 19:23:54,949 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 19:24:17,063 WARN L286 SmtUtils]: Spent 8.56s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-18 19:24:33,035 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse7 (mod c_~var_1_4~0 256))) (let ((.cse2 (div (mod c_~var_1_6~0 65536) .cse7)) (.cse4 (mod c_~var_1_19~0 4294967296))) (let ((.cse0 (mod (+ .cse7 c_~var_1_7~0) 65536)) (.cse1 (+ .cse4 1)) (.cse6 (mod |c_ULTIMATE.start_step_~stepLocal_2~0#1| 65536)) (.cse5 (+ (mod c_~var_1_7~0 65536) .cse7 1)) (.cse3 (mod (* c_~var_1_19~0 .cse2) 4294967296))) (and (or (< .cse0 .cse1) (not (= (mod (* .cse2 .cse0) 4294967296) .cse0))) (or (not (= .cse3 .cse0)) (< .cse4 .cse0)) (forall ((v_z_8 Int)) (or (< v_z_8 .cse1) (not (= (mod (* v_z_8 .cse2) 4294967296) v_z_8)) (< v_z_8 .cse5) (< .cse6 v_z_8))) (or (< .cse6 .cse3) (< .cse3 .cse5) (< .cse4 .cse3)))))) is different from false [2024-11-18 19:24:43,983 WARN L286 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)