./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-12.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_fillercodestructure_filler-pe-co_file-12.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 b50c918f4161b5cc99814dedbb1d5f1068fe72db189eac8c3c500593eb4daaee --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:30:23,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:30:23,128 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:30:23,134 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:30:23,136 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:30:23,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:30:23,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:30:23,167 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:30:23,169 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:30:23,172 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:30:23,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:30:23,173 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:30:23,175 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:30:23,176 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:30:23,177 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:30:23,177 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:30:23,177 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:30:23,178 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:30:23,178 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:30:23,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:30:23,179 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:30:23,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:30:23,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:30:23,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:30:23,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:30:23,181 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:30:23,181 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:30:23,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:30:23,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:30:23,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:30:23,182 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:30:23,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:30:23,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:30:23,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:30:23,184 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:30:23,184 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:30:23,184 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:30:23,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:30:23,185 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:30:23,185 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:30:23,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:30:23,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:30:23,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b50c918f4161b5cc99814dedbb1d5f1068fe72db189eac8c3c500593eb4daaee [2024-11-18 20:30:23,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:30:23,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:30:23,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:30:23,541 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:30:23,542 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:30:23,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-12.i [2024-11-18 20:30:25,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:30:25,284 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:30:25,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-12.i [2024-11-18 20:30:25,301 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1912ddf1a/63dc44d9e80f485f8776c70ab843f2d1/FLAGd9c3b7f15 [2024-11-18 20:30:25,315 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1912ddf1a/63dc44d9e80f485f8776c70ab843f2d1 [2024-11-18 20:30:25,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:30:25,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:30:25,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:30:25,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:30:25,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:30:25,329 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,330 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5530a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25, skipping insertion in model container [2024-11-18 20:30:25,330 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,362 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:30:25,535 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_fillercodestructure_filler-pe-co_file-12.i[919,932] [2024-11-18 20:30:25,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:30:25,633 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:30:25,645 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_fillercodestructure_filler-pe-co_file-12.i[919,932] [2024-11-18 20:30:25,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:30:25,723 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:30:25,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25 WrapperNode [2024-11-18 20:30:25,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:30:25,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:30:25,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:30:25,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:30:25,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,805 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 240 [2024-11-18 20:30:25,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:30:25,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:30:25,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:30:25,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:30:25,822 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,823 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,852 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 20:30:25,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,865 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,884 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:30:25,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:30:25,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:30:25,897 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:30:25,898 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (1/1) ... [2024-11-18 20:30:25,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:30:25,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:30:25,951 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 20:30:25,954 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 20:30:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:30:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:30:26,011 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:30:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:30:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:30:26,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:30:26,126 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:30:26,128 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:30:26,624 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-18 20:30:26,625 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:30:26,649 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:30:26,649 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:30:26,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:30:26 BoogieIcfgContainer [2024-11-18 20:30:26,650 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:30:26,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:30:26,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:30:26,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:30:26,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:30:25" (1/3) ... [2024-11-18 20:30:26,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b436f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:30:26, skipping insertion in model container [2024-11-18 20:30:26,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:30:25" (2/3) ... [2024-11-18 20:30:26,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b436f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:30:26, skipping insertion in model container [2024-11-18 20:30:26,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:30:26" (3/3) ... [2024-11-18 20:30:26,662 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-12.i [2024-11-18 20:30:26,678 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:30:26,678 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:30:26,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:30:26,759 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;@2c8ee596, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:30:26,759 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:30:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 20:30:26,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-18 20:30:26,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:30:26,789 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:26,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:30:26,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:30:26,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1295753400, now seen corresponding path program 1 times [2024-11-18 20:30:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:30:26,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792792764] [2024-11-18 20:30:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:26,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:30:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:30:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-11-18 20:30:27,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:30:27,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792792764] [2024-11-18 20:30:27,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792792764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:30:27,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910091387] [2024-11-18 20:30:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:27,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:30:27,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:30:27,413 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 20:30:27,415 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 20:30:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:30:27,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:30:27,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:30:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2024-11-18 20:30:27,761 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:30:27,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910091387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:30:27,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:30:27,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:30:27,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550904267] [2024-11-18 20:30:27,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:30:27,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:30:27,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:30:27,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:30:27,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:30:27,798 INFO L87 Difference]: Start difference. First operand has 107 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 63 states have internal predecessors, (88), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-18 20:30:27,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:30:27,832 INFO L93 Difference]: Finished difference Result 207 states and 380 transitions. [2024-11-18 20:30:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:30:27,834 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 256 [2024-11-18 20:30:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:30:27,842 INFO L225 Difference]: With dead ends: 207 [2024-11-18 20:30:27,842 INFO L226 Difference]: Without dead ends: 103 [2024-11-18 20:30:27,847 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 257 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 20:30:27,851 INFO L432 NwaCegarLoop]: 165 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, 165 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 20:30:27,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:30:27,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-18 20:30:27,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-18 20:30:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 59 states have internal predecessors, (81), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-18 20:30:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 165 transitions. [2024-11-18 20:30:27,927 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 165 transitions. Word has length 256 [2024-11-18 20:30:27,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:30:27,930 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 165 transitions. [2024-11-18 20:30:27,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-18 20:30:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 165 transitions. [2024-11-18 20:30:27,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-18 20:30:27,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:30:27,939 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:27,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-18 20:30:28,140 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 20:30:28,141 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:30:28,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:30:28,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2024155708, now seen corresponding path program 1 times [2024-11-18 20:30:28,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:30:28,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702458695] [2024-11-18 20:30:28,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:30:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:30:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-18 20:30:29,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:30:29,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702458695] [2024-11-18 20:30:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702458695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:30:29,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:30:29,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:30:29,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266935118] [2024-11-18 20:30:29,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:30:29,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:30:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:30:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:30:29,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:30:29,396 INFO L87 Difference]: Start difference. First operand 103 states and 165 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-18 20:30:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:30:30,033 INFO L93 Difference]: Finished difference Result 304 states and 490 transitions. [2024-11-18 20:30:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:30:30,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 256 [2024-11-18 20:30:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:30:30,042 INFO L225 Difference]: With dead ends: 304 [2024-11-18 20:30:30,044 INFO L226 Difference]: Without dead ends: 204 [2024-11-18 20:30:30,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:30:30,050 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 84 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:30:30,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 524 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 20:30:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-18 20:30:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 174. [2024-11-18 20:30:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 87 states have internal predecessors, (109), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-11-18 20:30:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 277 transitions. [2024-11-18 20:30:30,134 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 277 transitions. Word has length 256 [2024-11-18 20:30:30,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:30:30,137 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 277 transitions. [2024-11-18 20:30:30,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2024-11-18 20:30:30,137 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 277 transitions. [2024-11-18 20:30:30,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-18 20:30:30,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:30:30,145 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:30,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:30:30,148 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:30:30,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:30:30,150 INFO L85 PathProgramCache]: Analyzing trace with hash 628279844, now seen corresponding path program 1 times [2024-11-18 20:30:30,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:30:30,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488201175] [2024-11-18 20:30:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:30,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:30:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:30:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 18 proven. 105 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2024-11-18 20:30:31,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:30:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488201175] [2024-11-18 20:30:31,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488201175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:30:31,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181197522] [2024-11-18 20:30:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:31,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:30:31,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:30:31,005 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 20:30:31,007 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 20:30:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:30:31,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 20:30:31,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:30:32,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 893 proven. 105 refuted. 0 times theorem prover too weak. 2446 trivial. 0 not checked. [2024-11-18 20:30:32,269 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 20:30:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 18 proven. 105 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2024-11-18 20:30:32,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181197522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 20:30:32,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 20:30:32,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 19 [2024-11-18 20:30:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85774519] [2024-11-18 20:30:32,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 20:30:32,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-18 20:30:32,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:30:32,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-18 20:30:32,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-18 20:30:32,767 INFO L87 Difference]: Start difference. First operand 174 states and 277 transitions. Second operand has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 19 states have internal predecessors, (147), 6 states have call successors, (126), 3 states have call predecessors, (126), 6 states have return successors, (126), 6 states have call predecessors, (126), 6 states have call successors, (126) [2024-11-18 20:30:37,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:30:37,688 INFO L93 Difference]: Finished difference Result 948 states and 1432 transitions. [2024-11-18 20:30:37,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-18 20:30:37,690 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 19 states have internal predecessors, (147), 6 states have call successors, (126), 3 states have call predecessors, (126), 6 states have return successors, (126), 6 states have call predecessors, (126), 6 states have call successors, (126) Word has length 257 [2024-11-18 20:30:37,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:30:37,706 INFO L225 Difference]: With dead ends: 948 [2024-11-18 20:30:37,707 INFO L226 Difference]: Without dead ends: 848 [2024-11-18 20:30:37,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3941 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2069, Invalid=8233, Unknown=0, NotChecked=0, Total=10302 [2024-11-18 20:30:37,716 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 843 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2828 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 3610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 2828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-18 20:30:37,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1335 Invalid, 3610 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [782 Valid, 2828 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-18 20:30:37,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2024-11-18 20:30:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 364. [2024-11-18 20:30:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 216 states have (on average 1.3009259259259258) internal successors, (281), 218 states have internal predecessors, (281), 136 states have call successors, (136), 11 states have call predecessors, (136), 11 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-18 20:30:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 553 transitions. [2024-11-18 20:30:37,869 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 553 transitions. Word has length 257 [2024-11-18 20:30:37,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:30:37,870 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 553 transitions. [2024-11-18 20:30:37,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 19 states have internal predecessors, (147), 6 states have call successors, (126), 3 states have call predecessors, (126), 6 states have return successors, (126), 6 states have call predecessors, (126), 6 states have call successors, (126) [2024-11-18 20:30:37,871 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 553 transitions. [2024-11-18 20:30:37,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-18 20:30:37,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:30:37,878 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:37,898 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 20:30:38,078 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 [2024-11-18 20:30:38,079 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:30:38,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:30:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash -392788510, now seen corresponding path program 1 times [2024-11-18 20:30:38,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:30:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741361005] [2024-11-18 20:30:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:30:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:30:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-18 20:30:39,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:30:39,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741361005] [2024-11-18 20:30:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741361005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:30:39,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:30:39,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 20:30:39,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426084006] [2024-11-18 20:30:39,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:30:39,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 20:30:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:30:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 20:30:39,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-18 20:30:39,088 INFO L87 Difference]: Start difference. First operand 364 states and 553 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-18 20:30:39,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:30:39,878 INFO L93 Difference]: Finished difference Result 831 states and 1264 transitions. [2024-11-18 20:30:39,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 20:30:39,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 257 [2024-11-18 20:30:39,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:30:39,887 INFO L225 Difference]: With dead ends: 831 [2024-11-18 20:30:39,887 INFO L226 Difference]: Without dead ends: 545 [2024-11-18 20:30:39,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-11-18 20:30:39,891 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 349 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 20:30:39,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 596 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 20:30:39,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-18 20:30:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 511. [2024-11-18 20:30:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 315 states have (on average 1.3492063492063493) internal successors, (425), 318 states have internal predecessors, (425), 180 states have call successors, (180), 15 states have call predecessors, (180), 15 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-18 20:30:39,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 785 transitions. [2024-11-18 20:30:39,998 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 785 transitions. Word has length 257 [2024-11-18 20:30:39,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:30:39,999 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 785 transitions. [2024-11-18 20:30:40,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-18 20:30:40,001 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 785 transitions. [2024-11-18 20:30:40,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-18 20:30:40,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:30:40,006 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:40,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:30:40,006 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:30:40,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:30:40,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1601356196, now seen corresponding path program 1 times [2024-11-18 20:30:40,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:30:40,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919125256] [2024-11-18 20:30:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:40,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:30:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 20:30:40,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905466185] [2024-11-18 20:30:40,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:40,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:30:40,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:30:40,237 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 20:30:40,239 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 20:30:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:30:40,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-18 20:30:40,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:30:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1442 proven. 24 refuted. 0 times theorem prover too weak. 1978 trivial. 0 not checked. [2024-11-18 20:30:41,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 20:30:48,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:30:48,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919125256] [2024-11-18 20:30:48,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 20:30:48,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905466185] [2024-11-18 20:30:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905466185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:30:48,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:30:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2024-11-18 20:30:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840937888] [2024-11-18 20:30:48,240 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 20:30:48,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 20:30:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:30:48,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 20:30:48,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=134, Unknown=1, NotChecked=0, Total=182 [2024-11-18 20:30:48,242 INFO L87 Difference]: Start difference. First operand 511 states and 785 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (42), 3 states have call predecessors, (42), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-18 20:30:55,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:30:55,782 INFO L93 Difference]: Finished difference Result 1200 states and 1792 transitions. [2024-11-18 20:30:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-18 20:30:55,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (42), 3 states have call predecessors, (42), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 257 [2024-11-18 20:30:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:30:55,794 INFO L225 Difference]: With dead ends: 1200 [2024-11-18 20:30:55,795 INFO L226 Difference]: Without dead ends: 767 [2024-11-18 20:30:55,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=345, Invalid=844, Unknown=1, NotChecked=0, Total=1190 [2024-11-18 20:30:55,801 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 338 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 298 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-18 20:30:55,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 734 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 930 Invalid, 9 Unknown, 0 Unchecked, 5.0s Time] [2024-11-18 20:30:55,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-18 20:30:55,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 528. [2024-11-18 20:30:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 328 states have (on average 1.3384146341463414) internal successors, (439), 331 states have internal predecessors, (439), 180 states have call successors, (180), 19 states have call predecessors, (180), 19 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-18 20:30:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 799 transitions. [2024-11-18 20:30:55,902 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 799 transitions. Word has length 257 [2024-11-18 20:30:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:30:55,903 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 799 transitions. [2024-11-18 20:30:55,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 3 states have call successors, (42), 3 states have call predecessors, (42), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-18 20:30:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 799 transitions. [2024-11-18 20:30:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-18 20:30:55,911 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:30:55,911 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:55,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-18 20:30:56,112 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 20:30:56,113 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:30:56,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:30:56,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2083199769, now seen corresponding path program 1 times [2024-11-18 20:30:56,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:30:56,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588755134] [2024-11-18 20:30:56,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:56,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:30:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:30:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 84 proven. 39 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2024-11-18 20:30:56,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:30:56,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588755134] [2024-11-18 20:30:56,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588755134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:30:56,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641313774] [2024-11-18 20:30:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:30:56,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:30:56,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:30:56,669 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 20:30:56,671 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 20:30:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:30:56,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-18 20:30:56,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:30:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1553 proven. 39 refuted. 0 times theorem prover too weak. 1852 trivial. 0 not checked. [2024-11-18 20:30:57,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 20:30:59,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 84 proven. 39 refuted. 0 times theorem prover too weak. 3321 trivial. 0 not checked. [2024-11-18 20:30:59,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641313774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 20:30:59,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 20:30:59,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-18 20:30:59,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112513573] [2024-11-18 20:30:59,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 20:30:59,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 20:30:59,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:30:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 20:30:59,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:30:59,075 INFO L87 Difference]: Start difference. First operand 528 states and 799 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-18 20:30:59,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:30:59,750 INFO L93 Difference]: Finished difference Result 1014 states and 1514 transitions. [2024-11-18 20:30:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 20:30:59,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 258 [2024-11-18 20:30:59,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:30:59,755 INFO L225 Difference]: With dead ends: 1014 [2024-11-18 20:30:59,755 INFO L226 Difference]: Without dead ends: 572 [2024-11-18 20:30:59,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 513 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-18 20:30:59,758 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 84 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:30:59,759 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 258 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 20:30:59,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-18 20:30:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 544. [2024-11-18 20:30:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 340 states have (on average 1.2882352941176471) internal successors, (438), 343 states have internal predecessors, (438), 180 states have call successors, (180), 23 states have call predecessors, (180), 23 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2024-11-18 20:30:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 798 transitions. [2024-11-18 20:30:59,839 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 798 transitions. Word has length 258 [2024-11-18 20:30:59,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:30:59,840 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 798 transitions. [2024-11-18 20:30:59,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 2 states have call successors, (55), 2 states have call predecessors, (55), 4 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2024-11-18 20:30:59,840 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 798 transitions. [2024-11-18 20:30:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-18 20:30:59,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:30:59,845 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:59,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-18 20:31:00,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:31:00,045 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:31:00,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:31:00,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1531709157, now seen corresponding path program 1 times [2024-11-18 20:31:00,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:31:00,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17267018] [2024-11-18 20:31:00,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:31:00,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:31:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 20:31:00,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34280001] [2024-11-18 20:31:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:31:00,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:31:00,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:31:00,253 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) [2024-11-18 20:31:00,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-18 20:31:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:31:00,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-18 20:31:00,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:31:01,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 1163 proven. 24 refuted. 0 times theorem prover too weak. 2257 trivial. 0 not checked. [2024-11-18 20:31:01,754 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 20:31:11,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:31:11,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17267018] [2024-11-18 20:31:11,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 20:31:11,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34280001] [2024-11-18 20:31:11,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34280001] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:31:11,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:31:11,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2024-11-18 20:31:11,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146722691] [2024-11-18 20:31:11,556 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 20:31:11,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 20:31:11,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:31:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 20:31:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=77, Unknown=2, NotChecked=0, Total=110 [2024-11-18 20:31:11,558 INFO L87 Difference]: Start difference. First operand 544 states and 798 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-18 20:31:14,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:31:14,857 INFO L93 Difference]: Finished difference Result 1263 states and 1823 transitions. [2024-11-18 20:31:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-18 20:31:14,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 258 [2024-11-18 20:31:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:31:14,866 INFO L225 Difference]: With dead ends: 1263 [2024-11-18 20:31:14,866 INFO L226 Difference]: Without dead ends: 809 [2024-11-18 20:31:14,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=146, Invalid=314, Unknown=2, NotChecked=0, Total=462 [2024-11-18 20:31:14,870 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 173 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 105 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:31:14,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 702 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 640 Invalid, 8 Unknown, 0 Unchecked, 2.5s Time] [2024-11-18 20:31:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-18 20:31:14,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 644. [2024-11-18 20:31:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 391 states have (on average 1.2531969309462916) internal successors, (490), 395 states have internal predecessors, (490), 222 states have call successors, (222), 30 states have call predecessors, (222), 30 states have return successors, (222), 218 states have call predecessors, (222), 222 states have call successors, (222) [2024-11-18 20:31:14,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 934 transitions. [2024-11-18 20:31:14,978 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 934 transitions. Word has length 258 [2024-11-18 20:31:14,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:31:14,979 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 934 transitions. [2024-11-18 20:31:14,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2024-11-18 20:31:14,979 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 934 transitions. [2024-11-18 20:31:14,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-18 20:31:14,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:31:14,983 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:15,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-18 20:31:15,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:31:15,184 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:31:15,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:31:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash -835943698, now seen corresponding path program 1 times [2024-11-18 20:31:15,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:31:15,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778297410] [2024-11-18 20:31:15,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:31:15,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:31:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:31:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-11-18 20:31:18,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:31:18,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778297410] [2024-11-18 20:31:18,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778297410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:31:18,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:31:18,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-18 20:31:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624079167] [2024-11-18 20:31:18,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:31:18,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-18 20:31:18,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:31:18,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-18 20:31:18,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-18 20:31:18,823 INFO L87 Difference]: Start difference. First operand 644 states and 934 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-18 20:31:22,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:31:22,794 INFO L93 Difference]: Finished difference Result 1754 states and 2521 transitions. [2024-11-18 20:31:22,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 20:31:22,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 258 [2024-11-18 20:31:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:31:22,801 INFO L225 Difference]: With dead ends: 1754 [2024-11-18 20:31:22,801 INFO L226 Difference]: Without dead ends: 1200 [2024-11-18 20:31:22,803 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-18 20:31:22,804 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 583 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-18 20:31:22,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 700 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-18 20:31:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2024-11-18 20:31:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 968. [2024-11-18 20:31:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 650 states have (on average 1.3215384615384616) internal successors, (859), 660 states have internal predecessors, (859), 276 states have call successors, (276), 41 states have call predecessors, (276), 41 states have return successors, (276), 266 states have call predecessors, (276), 276 states have call successors, (276) [2024-11-18 20:31:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1411 transitions. [2024-11-18 20:31:22,933 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1411 transitions. Word has length 258 [2024-11-18 20:31:22,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:31:22,935 INFO L471 AbstractCegarLoop]: Abstraction has 968 states and 1411 transitions. [2024-11-18 20:31:22,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2024-11-18 20:31:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1411 transitions. [2024-11-18 20:31:22,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-18 20:31:22,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:31:22,940 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:22,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 20:31:22,941 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:31:22,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:31:22,941 INFO L85 PathProgramCache]: Analyzing trace with hash 853000044, now seen corresponding path program 1 times [2024-11-18 20:31:22,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:31:22,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784038598] [2024-11-18 20:31:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:31:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:31:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-18 20:31:23,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222021917] [2024-11-18 20:31:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:31:23,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:31:23,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:31:23,133 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) [2024-11-18 20:31:23,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-18 20:31:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:31:23,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-18 20:31:23,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:31:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 689 proven. 219 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2024-11-18 20:31:30,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 20:31:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:31:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784038598] [2024-11-18 20:31:35,391 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-18 20:31:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222021917] [2024-11-18 20:31:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222021917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:31:35,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:31:35,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2024-11-18 20:31:35,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746638069] [2024-11-18 20:31:35,392 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-18 20:31:35,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 20:31:35,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:31:35,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 20:31:35,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-18 20:31:35,395 INFO L87 Difference]: Start difference. First operand 968 states and 1411 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 12 states have internal predecessors, (63), 3 states have call successors, (42), 3 states have call predecessors, (42), 5 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42)