./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-26.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_operatoramount_amount100_file-26.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 410a9989c425e67a684cc41a030ddcb789719d04c3f66db1da52362a37ac45cb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 23:26:10,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 23:26:10,573 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 23:26:10,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 23:26:10,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 23:26:10,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 23:26:10,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 23:26:10,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 23:26:10,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 23:26:10,607 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 23:26:10,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 23:26:10,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 23:26:10,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 23:26:10,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 23:26:10,609 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 23:26:10,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 23:26:10,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 23:26:10,612 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 23:26:10,612 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 23:26:10,612 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 23:26:10,613 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 23:26:10,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 23:26:10,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 23:26:10,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 23:26:10,617 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 23:26:10,617 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 23:26:10,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 23:26:10,617 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 23:26:10,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 23:26:10,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 23:26:10,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 23:26:10,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 23:26:10,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:26:10,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 23:26:10,624 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 23:26:10,624 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 23:26:10,625 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 23:26:10,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 23:26:10,625 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 23:26:10,625 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 23:26:10,625 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 23:26:10,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 23:26:10,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 410a9989c425e67a684cc41a030ddcb789719d04c3f66db1da52362a37ac45cb [2024-11-18 23:26:10,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 23:26:10,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 23:26:10,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 23:26:10,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 23:26:10,858 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 23:26:10,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-26.i [2024-11-18 23:26:12,049 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 23:26:12,202 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 23:26:12,203 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-26.i [2024-11-18 23:26:12,213 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1436106fc/6d7af32fd80b45a88485446feea7e71b/FLAGf5fa259c5 [2024-11-18 23:26:12,225 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1436106fc/6d7af32fd80b45a88485446feea7e71b [2024-11-18 23:26:12,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 23:26:12,228 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 23:26:12,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 23:26:12,229 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 23:26:12,233 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 23:26:12,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,234 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7882bacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12, skipping insertion in model container [2024-11-18 23:26:12,234 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 23:26:12,392 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_operatoramount_amount100_file-26.i[916,929] [2024-11-18 23:26:12,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:26:12,477 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 23:26:12,486 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_operatoramount_amount100_file-26.i[916,929] [2024-11-18 23:26:12,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 23:26:12,540 INFO L204 MainTranslator]: Completed translation [2024-11-18 23:26:12,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12 WrapperNode [2024-11-18 23:26:12,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 23:26:12,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 23:26:12,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 23:26:12,542 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 23:26:12,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,612 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 236 [2024-11-18 23:26:12,612 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 23:26:12,613 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 23:26:12,613 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 23:26:12,613 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 23:26:12,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,658 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 23:26:12,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,678 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,684 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 23:26:12,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 23:26:12,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 23:26:12,691 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 23:26:12,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (1/1) ... [2024-11-18 23:26:12,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 23:26:12,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:26:12,721 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 23:26:12,723 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 23:26:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 23:26:12,765 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 23:26:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 23:26:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 23:26:12,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 23:26:12,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 23:26:12,836 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 23:26:12,838 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 23:26:13,193 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-18 23:26:13,194 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 23:26:13,205 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 23:26:13,206 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 23:26:13,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:26:13 BoogieIcfgContainer [2024-11-18 23:26:13,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 23:26:13,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 23:26:13,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 23:26:13,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 23:26:13,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:26:12" (1/3) ... [2024-11-18 23:26:13,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c73dc39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:26:13, skipping insertion in model container [2024-11-18 23:26:13,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:26:12" (2/3) ... [2024-11-18 23:26:13,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c73dc39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:26:13, skipping insertion in model container [2024-11-18 23:26:13,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:26:13" (3/3) ... [2024-11-18 23:26:13,215 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-26.i [2024-11-18 23:26:13,227 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 23:26:13,228 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 23:26:13,288 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 23:26:13,294 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;@35b1029d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 23:26:13,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 23:26:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 69 states have (on average 1.434782608695652) internal successors, (99), 70 states have internal predecessors, (99), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-18 23:26:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-18 23:26:13,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:13,310 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:13,310 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:13,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash 189627933, now seen corresponding path program 1 times [2024-11-18 23:26:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:13,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179028031] [2024-11-18 23:26:13,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-11-18 23:26:13,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:13,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179028031] [2024-11-18 23:26:13,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179028031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 23:26:13,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954246380] [2024-11-18 23:26:13,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:13,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 23:26:13,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 23:26:13,692 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 23:26:13,693 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 23:26:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:13,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 23:26:13,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 23:26:13,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2024-11-18 23:26:13,911 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 23:26:13,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954246380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:13,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 23:26:13,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 23:26:13,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260057548] [2024-11-18 23:26:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:13,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 23:26:13,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 23:26:13,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 23:26:13,940 INFO L87 Difference]: Start difference. First operand has 102 states, 69 states have (on average 1.434782608695652) internal successors, (99), 70 states have internal predecessors, (99), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 23:26:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:13,966 INFO L93 Difference]: Finished difference Result 197 states and 342 transitions. [2024-11-18 23:26:13,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 23:26:13,967 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) Word has length 197 [2024-11-18 23:26:13,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:13,974 INFO L225 Difference]: With dead ends: 197 [2024-11-18 23:26:13,974 INFO L226 Difference]: Without dead ends: 98 [2024-11-18 23:26:13,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 198 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 23:26:13,979 INFO L432 NwaCegarLoop]: 152 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, 152 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 23:26:13,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:26:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-18 23:26:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-18 23:26:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.393939393939394) internal successors, (92), 66 states have internal predecessors, (92), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-18 23:26:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 152 transitions. [2024-11-18 23:26:14,015 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 152 transitions. Word has length 197 [2024-11-18 23:26:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:14,015 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 152 transitions. [2024-11-18 23:26:14,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 23:26:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 152 transitions. [2024-11-18 23:26:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-18 23:26:14,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:14,021 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:14,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 23:26:14,221 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 23:26:14,222 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:14,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:14,223 INFO L85 PathProgramCache]: Analyzing trace with hash 569652249, now seen corresponding path program 1 times [2024-11-18 23:26:14,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:14,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501733597] [2024-11-18 23:26:14,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:14,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-18 23:26:14,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:14,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501733597] [2024-11-18 23:26:14,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501733597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:14,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:14,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 23:26:14,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625707661] [2024-11-18 23:26:14,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:14,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 23:26:14,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 23:26:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:26:14,683 INFO L87 Difference]: Start difference. First operand 98 states and 152 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-11-18 23:26:14,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:14,731 INFO L93 Difference]: Finished difference Result 288 states and 450 transitions. [2024-11-18 23:26:14,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 23:26:14,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 197 [2024-11-18 23:26:14,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:14,735 INFO L225 Difference]: With dead ends: 288 [2024-11-18 23:26:14,735 INFO L226 Difference]: Without dead ends: 193 [2024-11-18 23:26:14,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 23:26:14,739 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 146 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:14,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 399 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 23:26:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-18 23:26:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 99. [2024-11-18 23:26:14,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 67 states have internal predecessors, (93), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-18 23:26:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 153 transitions. [2024-11-18 23:26:14,759 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 153 transitions. Word has length 197 [2024-11-18 23:26:14,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:14,764 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 153 transitions. [2024-11-18 23:26:14,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-11-18 23:26:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 153 transitions. [2024-11-18 23:26:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-18 23:26:14,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:14,766 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:14,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 23:26:14,768 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:14,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:14,769 INFO L85 PathProgramCache]: Analyzing trace with hash -451416105, now seen corresponding path program 1 times [2024-11-18 23:26:14,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:14,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798950305] [2024-11-18 23:26:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:14,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-18 23:26:15,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:15,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798950305] [2024-11-18 23:26:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798950305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:15,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:26:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868031225] [2024-11-18 23:26:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:15,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:26:15,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:26:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:26:15,440 INFO L87 Difference]: Start difference. First operand 99 states and 153 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-11-18 23:26:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:15,614 INFO L93 Difference]: Finished difference Result 301 states and 459 transitions. [2024-11-18 23:26:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:26:15,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 197 [2024-11-18 23:26:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:15,618 INFO L225 Difference]: With dead ends: 301 [2024-11-18 23:26:15,620 INFO L226 Difference]: Without dead ends: 205 [2024-11-18 23:26:15,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:26:15,622 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 131 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:15,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 524 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:26:15,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-18 23:26:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 170. [2024-11-18 23:26:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 132 states have internal predecessors, (189), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-18 23:26:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 261 transitions. [2024-11-18 23:26:15,647 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 261 transitions. Word has length 197 [2024-11-18 23:26:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:15,647 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 261 transitions. [2024-11-18 23:26:15,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-11-18 23:26:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 261 transitions. [2024-11-18 23:26:15,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-18 23:26:15,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:15,649 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:15,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 23:26:15,650 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:15,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash 874043826, now seen corresponding path program 1 times [2024-11-18 23:26:15,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:15,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64650660] [2024-11-18 23:26:15,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:15,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-18 23:26:15,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:15,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64650660] [2024-11-18 23:26:15,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64650660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:15,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:15,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 23:26:15,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94035151] [2024-11-18 23:26:15,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:15,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 23:26:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:15,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 23:26:15,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 23:26:15,927 INFO L87 Difference]: Start difference. First operand 170 states and 261 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-11-18 23:26:16,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:16,158 INFO L93 Difference]: Finished difference Result 558 states and 858 transitions. [2024-11-18 23:26:16,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 23:26:16,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) Word has length 198 [2024-11-18 23:26:16,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:16,163 INFO L225 Difference]: With dead ends: 558 [2024-11-18 23:26:16,164 INFO L226 Difference]: Without dead ends: 391 [2024-11-18 23:26:16,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:26:16,168 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 157 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:16,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 598 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:26:16,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2024-11-18 23:26:16,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 318. [2024-11-18 23:26:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 241 states have (on average 1.4398340248962656) internal successors, (347), 243 states have internal predecessors, (347), 72 states have call successors, (72), 4 states have call predecessors, (72), 4 states have return successors, (72), 70 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-18 23:26:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 491 transitions. [2024-11-18 23:26:16,209 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 491 transitions. Word has length 198 [2024-11-18 23:26:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:16,210 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 491 transitions. [2024-11-18 23:26:16,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 1 states have call predecessors, (30), 1 states have call successors, (30) [2024-11-18 23:26:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 491 transitions. [2024-11-18 23:26:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-18 23:26:16,212 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:16,212 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:16,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 23:26:16,212 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:16,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1014592436, now seen corresponding path program 1 times [2024-11-18 23:26:16,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:16,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329451550] [2024-11-18 23:26:16,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:16,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:16,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-18 23:26:16,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:16,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329451550] [2024-11-18 23:26:16,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329451550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:16,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:16,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 23:26:16,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016798233] [2024-11-18 23:26:16,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:16,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 23:26:16,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:16,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 23:26:16,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 23:26:16,523 INFO L87 Difference]: Start difference. First operand 318 states and 491 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 23:26:16,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:16,722 INFO L93 Difference]: Finished difference Result 800 states and 1237 transitions. [2024-11-18 23:26:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 23:26:16,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 198 [2024-11-18 23:26:16,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:16,726 INFO L225 Difference]: With dead ends: 800 [2024-11-18 23:26:16,726 INFO L226 Difference]: Without dead ends: 485 [2024-11-18 23:26:16,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-18 23:26:16,729 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 116 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:16,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 594 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 23:26:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2024-11-18 23:26:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 483. [2024-11-18 23:26:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 368 states have (on average 1.4320652173913044) internal successors, (527), 371 states have internal predecessors, (527), 108 states have call successors, (108), 6 states have call predecessors, (108), 6 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-18 23:26:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 743 transitions. [2024-11-18 23:26:16,774 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 743 transitions. Word has length 198 [2024-11-18 23:26:16,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:16,776 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 743 transitions. [2024-11-18 23:26:16,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 23:26:16,776 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 743 transitions. [2024-11-18 23:26:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-18 23:26:16,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:16,777 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:16,778 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 23:26:16,778 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:16,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:16,779 INFO L85 PathProgramCache]: Analyzing trace with hash 196943986, now seen corresponding path program 1 times [2024-11-18 23:26:16,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:16,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177656022] [2024-11-18 23:26:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:16,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:24,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-18 23:26:24,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:24,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177656022] [2024-11-18 23:26:24,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177656022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:24,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:24,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-18 23:26:24,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26796885] [2024-11-18 23:26:24,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:24,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-18 23:26:24,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:24,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-18 23:26:24,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-18 23:26:24,573 INFO L87 Difference]: Start difference. First operand 483 states and 743 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 4 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-18 23:26:26,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:26,884 INFO L93 Difference]: Finished difference Result 1748 states and 2639 transitions. [2024-11-18 23:26:26,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 23:26:26,885 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 4 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 198 [2024-11-18 23:26:26,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:26,892 INFO L225 Difference]: With dead ends: 1748 [2024-11-18 23:26:26,892 INFO L226 Difference]: Without dead ends: 1268 [2024-11-18 23:26:26,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-11-18 23:26:26,895 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 754 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:26,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 969 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-18 23:26:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2024-11-18 23:26:26,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 985. [2024-11-18 23:26:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 985 states, 774 states have (on average 1.4405684754521964) internal successors, (1115), 783 states have internal predecessors, (1115), 196 states have call successors, (196), 14 states have call predecessors, (196), 14 states have return successors, (196), 187 states have call predecessors, (196), 196 states have call successors, (196) [2024-11-18 23:26:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1507 transitions. [2024-11-18 23:26:26,959 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1507 transitions. Word has length 198 [2024-11-18 23:26:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:26,963 INFO L471 AbstractCegarLoop]: Abstraction has 985 states and 1507 transitions. [2024-11-18 23:26:26,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 13 states have internal predecessors, (51), 4 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-18 23:26:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1507 transitions. [2024-11-18 23:26:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-18 23:26:26,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:26,965 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:26,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 23:26:26,965 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:26,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash -814173264, now seen corresponding path program 1 times [2024-11-18 23:26:26,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:26,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423830213] [2024-11-18 23:26:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:26,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 23:26:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-11-18 23:26:27,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 23:26:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423830213] [2024-11-18 23:26:27,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423830213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 23:26:27,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 23:26:27,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-18 23:26:27,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751775277] [2024-11-18 23:26:27,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 23:26:27,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-18 23:26:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 23:26:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-18 23:26:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-18 23:26:27,473 INFO L87 Difference]: Start difference. First operand 985 states and 1507 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 23:26:28,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 23:26:28,290 INFO L93 Difference]: Finished difference Result 2525 states and 3857 transitions. [2024-11-18 23:26:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-18 23:26:28,290 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 198 [2024-11-18 23:26:28,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 23:26:28,297 INFO L225 Difference]: With dead ends: 2525 [2024-11-18 23:26:28,297 INFO L226 Difference]: Without dead ends: 1543 [2024-11-18 23:26:28,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-18 23:26:28,299 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 393 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 23:26:28,300 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 972 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 23:26:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2024-11-18 23:26:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1487. [2024-11-18 23:26:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1180 states have (on average 1.4330508474576271) internal successors, (1691), 1195 states have internal predecessors, (1691), 284 states have call successors, (284), 22 states have call predecessors, (284), 22 states have return successors, (284), 269 states have call predecessors, (284), 284 states have call successors, (284) [2024-11-18 23:26:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2259 transitions. [2024-11-18 23:26:28,388 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2259 transitions. Word has length 198 [2024-11-18 23:26:28,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 23:26:28,389 INFO L471 AbstractCegarLoop]: Abstraction has 1487 states and 2259 transitions. [2024-11-18 23:26:28,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2024-11-18 23:26:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2259 transitions. [2024-11-18 23:26:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-18 23:26:28,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 23:26:28,391 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:26:28,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 23:26:28,392 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 23:26:28,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 23:26:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash -134114894, now seen corresponding path program 1 times [2024-11-18 23:26:28,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 23:26:28,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787669384] [2024-11-18 23:26:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 23:26:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 23:26:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat