./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-66.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-66.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 e47d94c12124cf4b862c2f881009fef36c28832c985456c790d3472927c1d0c5 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 20:37:07,443 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 20:37:07,495 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 20:37:07,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 20:37:07,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 20:37:07,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 20:37:07,527 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 20:37:07,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 20:37:07,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 20:37:07,528 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 20:37:07,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 20:37:07,529 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 20:37:07,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 20:37:07,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 20:37:07,532 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 20:37:07,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 20:37:07,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 20:37:07,532 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 20:37:07,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 20:37:07,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 20:37:07,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 20:37:07,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 20:37:07,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 20:37:07,537 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 20:37:07,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 20:37:07,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 20:37:07,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 20:37:07,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 20:37:07,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 20:37:07,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 20:37:07,538 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 20:37:07,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 20:37:07,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:37:07,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 20:37:07,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 20:37:07,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 20:37:07,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 20:37:07,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 20:37:07,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 20:37:07,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 20:37:07,541 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 20:37:07,541 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 20:37:07,541 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e47d94c12124cf4b862c2f881009fef36c28832c985456c790d3472927c1d0c5 [2024-11-18 20:37:07,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 20:37:07,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 20:37:07,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 20:37:07,819 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 20:37:07,819 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 20:37:07,821 INFO L431 ainManager$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-66.i [2024-11-18 20:37:09,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 20:37:09,375 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 20:37:09,379 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-66.i [2024-11-18 20:37:09,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a648d2bd6/d85135606a0742ec8c2e4b7aea65db3e/FLAG3c1d82ea5 [2024-11-18 20:37:09,403 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a648d2bd6/d85135606a0742ec8c2e4b7aea65db3e [2024-11-18 20:37:09,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 20:37:09,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 20:37:09,407 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 20:37:09,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 20:37:09,413 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 20:37:09,414 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@701180cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09, skipping insertion in model container [2024-11-18 20:37:09,415 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 20:37:09,590 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-66.i[919,932] [2024-11-18 20:37:09,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:37:09,673 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 20:37:09,684 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-66.i[919,932] [2024-11-18 20:37:09,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 20:37:09,817 INFO L204 MainTranslator]: Completed translation [2024-11-18 20:37:09,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09 WrapperNode [2024-11-18 20:37:09,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 20:37:09,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 20:37:09,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 20:37:09,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 20:37:09,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,888 INFO L138 Inliner]: procedures = 26, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 186 [2024-11-18 20:37:09,888 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 20:37:09,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 20:37:09,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 20:37:09,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 20:37:09,898 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,902 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,915 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 20:37:09,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,950 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 20:37:09,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 20:37:09,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 20:37:09,951 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 20:37:09,952 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (1/1) ... [2024-11-18 20:37:09,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 20:37:09,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:37:09,986 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 20:37:09,989 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 20:37:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 20:37:10,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-18 20:37:10,029 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-18 20:37:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 20:37:10,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 20:37:10,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 20:37:10,112 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 20:37:10,114 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 20:37:10,436 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-18 20:37:10,437 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 20:37:10,447 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 20:37:10,448 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-18 20:37:10,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:10 BoogieIcfgContainer [2024-11-18 20:37:10,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 20:37:10,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 20:37:10,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 20:37:10,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 20:37:10,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:37:09" (1/3) ... [2024-11-18 20:37:10,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7467ae00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:10, skipping insertion in model container [2024-11-18 20:37:10,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:37:09" (2/3) ... [2024-11-18 20:37:10,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7467ae00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:37:10, skipping insertion in model container [2024-11-18 20:37:10,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:37:10" (3/3) ... [2024-11-18 20:37:10,456 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-66.i [2024-11-18 20:37:10,471 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 20:37:10,471 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-18 20:37:10,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 20:37:10,536 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;@7ade2693, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 20:37:10,536 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-18 20:37:10,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 states have internal predecessors, (85), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 20:37:10,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 20:37:10,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:37:10,553 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:10,553 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:37:10,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:37:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1238318862, now seen corresponding path program 1 times [2024-11-18 20:37:10,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:37:10,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321169670] [2024-11-18 20:37:10,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:37:10,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:37:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:37:10,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-18 20:37:10,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:37:10,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321169670] [2024-11-18 20:37:10,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321169670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:37:10,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253258618] [2024-11-18 20:37:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:37:10,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:37:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:37:10,883 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 20:37:10,884 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 20:37:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:37:11,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-18 20:37:11,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:37:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2024-11-18 20:37:11,071 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-18 20:37:11,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253258618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:37:11,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-18 20:37:11,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-18 20:37:11,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770453285] [2024-11-18 20:37:11,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:37:11,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-18 20:37:11,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:37:11,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-18 20:37:11,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-18 20:37:11,102 INFO L87 Difference]: Start difference. First operand has 84 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 58 states have internal predecessors, (85), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 20:37:11,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:37:11,126 INFO L93 Difference]: Finished difference Result 161 states and 284 transitions. [2024-11-18 20:37:11,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-18 20:37:11,128 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) Word has length 160 [2024-11-18 20:37:11,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:37:11,134 INFO L225 Difference]: With dead ends: 161 [2024-11-18 20:37:11,134 INFO L226 Difference]: Without dead ends: 80 [2024-11-18 20:37:11,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 161 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 20:37:11,139 INFO L432 NwaCegarLoop]: 126 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, 126 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 20:37:11,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 20:37:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-18 20:37:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-18 20:37:11,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 54 states have internal predecessors, (78), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-18 20:37:11,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2024-11-18 20:37:11,176 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 160 [2024-11-18 20:37:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:37:11,176 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2024-11-18 20:37:11,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 20:37:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2024-11-18 20:37:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 20:37:11,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:37:11,179 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:11,193 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 20:37:11,380 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 20:37:11,381 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:37:11,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:37:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1644456530, now seen corresponding path program 1 times [2024-11-18 20:37:11,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:37:11,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879034340] [2024-11-18 20:37:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:37:11,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:37:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:37:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 20:37:24,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:37:24,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879034340] [2024-11-18 20:37:24,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879034340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:37:24,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:37:24,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-18 20:37:24,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301353941] [2024-11-18 20:37:24,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:37:24,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-18 20:37:24,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:37:24,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-18 20:37:24,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-11-18 20:37:24,266 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 5 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2024-11-18 20:37:29,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:37:29,132 INFO L93 Difference]: Finished difference Result 397 states and 607 transitions. [2024-11-18 20:37:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-18 20:37:29,133 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 5 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 160 [2024-11-18 20:37:29,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:37:29,136 INFO L225 Difference]: With dead ends: 397 [2024-11-18 20:37:29,136 INFO L226 Difference]: Without dead ends: 320 [2024-11-18 20:37:29,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=451, Invalid=1189, Unknown=0, NotChecked=0, Total=1640 [2024-11-18 20:37:29,139 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 2036 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-18 20:37:29,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2036 Valid, 466 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1149 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-18 20:37:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-18 20:37:29,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 180. [2024-11-18 20:37:29,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 149 states have (on average 1.4899328859060403) internal successors, (222), 150 states have internal predecessors, (222), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 20:37:29,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 274 transitions. [2024-11-18 20:37:29,164 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 274 transitions. Word has length 160 [2024-11-18 20:37:29,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:37:29,165 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 274 transitions. [2024-11-18 20:37:29,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 5 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2024-11-18 20:37:29,166 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 274 transitions. [2024-11-18 20:37:29,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 20:37:29,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:37:29,169 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:29,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 20:37:29,169 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:37:29,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:37:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1386291092, now seen corresponding path program 1 times [2024-11-18 20:37:29,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:37:29,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917361047] [2024-11-18 20:37:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:37:29,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:37:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:37:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 20:37:54,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:37:54,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917361047] [2024-11-18 20:37:54,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917361047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:37:54,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:37:54,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 20:37:54,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388708356] [2024-11-18 20:37:54,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:37:54,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 20:37:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:37:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 20:37:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:37:54,562 INFO L87 Difference]: Start difference. First operand 180 states and 274 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 20:37:55,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:37:55,847 INFO L93 Difference]: Finished difference Result 282 states and 411 transitions. [2024-11-18 20:37:55,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 20:37:55,848 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 20:37:55,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:37:55,850 INFO L225 Difference]: With dead ends: 282 [2024-11-18 20:37:55,850 INFO L226 Difference]: Without dead ends: 280 [2024-11-18 20:37:55,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2024-11-18 20:37:55,852 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 304 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-18 20:37:55,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 726 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-18 20:37:55,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-18 20:37:55,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 182. [2024-11-18 20:37:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 151 states have (on average 1.4966887417218544) internal successors, (226), 152 states have internal predecessors, (226), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 20:37:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 278 transitions. [2024-11-18 20:37:55,873 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 278 transitions. Word has length 160 [2024-11-18 20:37:55,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:37:55,873 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 278 transitions. [2024-11-18 20:37:55,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 20:37:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 278 transitions. [2024-11-18 20:37:55,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 20:37:55,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:37:55,875 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:55,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 20:37:55,876 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:37:55,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:37:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash -623388176, now seen corresponding path program 1 times [2024-11-18 20:37:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:37:55,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572914052] [2024-11-18 20:37:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:37:55,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:37:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:37:59,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 20:37:59,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:37:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572914052] [2024-11-18 20:37:59,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572914052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:37:59,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:37:59,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-18 20:37:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878443488] [2024-11-18 20:37:59,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:37:59,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-18 20:37:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:37:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-18 20:37:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-18 20:37:59,917 INFO L87 Difference]: Start difference. First operand 182 states and 278 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 20:38:02,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:38:02,399 INFO L93 Difference]: Finished difference Result 495 states and 740 transitions. [2024-11-18 20:38:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-18 20:38:02,400 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 160 [2024-11-18 20:38:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:38:02,402 INFO L225 Difference]: With dead ends: 495 [2024-11-18 20:38:02,402 INFO L226 Difference]: Without dead ends: 316 [2024-11-18 20:38:02,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=262, Invalid=730, Unknown=0, NotChecked=0, Total=992 [2024-11-18 20:38:02,404 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 1050 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:38:02,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 476 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-18 20:38:02,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-18 20:38:02,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 198. [2024-11-18 20:38:02,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 167 states have (on average 1.4970059880239521) internal successors, (250), 168 states have internal predecessors, (250), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 20:38:02,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 302 transitions. [2024-11-18 20:38:02,421 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 302 transitions. Word has length 160 [2024-11-18 20:38:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:38:02,421 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 302 transitions. [2024-11-18 20:38:02,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 4 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2024-11-18 20:38:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 302 transitions. [2024-11-18 20:38:02,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 20:38:02,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:38:02,423 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:02,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 20:38:02,423 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:38:02,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:38:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash -365222738, now seen corresponding path program 1 times [2024-11-18 20:38:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:38:02,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961862295] [2024-11-18 20:38:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:38:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:38:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:38:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 20:38:05,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:38:05,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961862295] [2024-11-18 20:38:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961862295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:38:05,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:38:05,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-18 20:38:05,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682512074] [2024-11-18 20:38:05,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:38:05,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-18 20:38:05,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:38:05,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-18 20:38:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-11-18 20:38:05,784 INFO L87 Difference]: Start difference. First operand 198 states and 302 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 20:38:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:38:07,904 INFO L93 Difference]: Finished difference Result 316 states and 461 transitions. [2024-11-18 20:38:07,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 20:38:07,905 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 20:38:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:38:07,907 INFO L225 Difference]: With dead ends: 316 [2024-11-18 20:38:07,909 INFO L226 Difference]: Without dead ends: 314 [2024-11-18 20:38:07,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-11-18 20:38:07,913 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 399 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:38:07,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 735 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 20:38:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-18 20:38:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 196. [2024-11-18 20:38:07,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 165 states have (on average 1.503030303030303) internal successors, (248), 166 states have internal predecessors, (248), 26 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-18 20:38:07,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 300 transitions. [2024-11-18 20:38:07,938 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 300 transitions. Word has length 160 [2024-11-18 20:38:07,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:38:07,939 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 300 transitions. [2024-11-18 20:38:07,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 20:38:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 300 transitions. [2024-11-18 20:38:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 20:38:07,940 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:38:07,941 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:07,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 20:38:07,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:38:07,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:38:07,941 INFO L85 PathProgramCache]: Analyzing trace with hash 961567024, now seen corresponding path program 1 times [2024-11-18 20:38:07,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:38:07,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777920030] [2024-11-18 20:38:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:38:07,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:38:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:38:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 20:38:08,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:38:08,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777920030] [2024-11-18 20:38:08,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777920030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:38:08,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:38:08,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 20:38:08,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024071262] [2024-11-18 20:38:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:38:08,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 20:38:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:38:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 20:38:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:38:08,005 INFO L87 Difference]: Start difference. First operand 196 states and 300 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 20:38:08,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:38:08,100 INFO L93 Difference]: Finished difference Result 508 states and 779 transitions. [2024-11-18 20:38:08,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 20:38:08,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 20:38:08,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:38:08,104 INFO L225 Difference]: With dead ends: 508 [2024-11-18 20:38:08,104 INFO L226 Difference]: Without dead ends: 315 [2024-11-18 20:38:08,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 20:38:08,108 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 109 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 20:38:08,109 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 330 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 20:38:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-18 20:38:08,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 313. [2024-11-18 20:38:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 252 states have (on average 1.4404761904761905) internal successors, (363), 254 states have internal predecessors, (363), 52 states have call successors, (52), 8 states have call predecessors, (52), 8 states have return successors, (52), 50 states have call predecessors, (52), 52 states have call successors, (52) [2024-11-18 20:38:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 467 transitions. [2024-11-18 20:38:08,186 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 467 transitions. Word has length 160 [2024-11-18 20:38:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:38:08,187 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 467 transitions. [2024-11-18 20:38:08,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 20:38:08,188 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 467 transitions. [2024-11-18 20:38:08,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 20:38:08,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:38:08,191 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:08,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 20:38:08,191 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:38:08,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:38:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash -318296654, now seen corresponding path program 1 times [2024-11-18 20:38:08,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:38:08,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192276379] [2024-11-18 20:38:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:38:08,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:38:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:38:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 20:38:13,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:38:13,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192276379] [2024-11-18 20:38:13,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192276379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:38:13,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:38:13,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-18 20:38:13,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992741571] [2024-11-18 20:38:13,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:38:13,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-18 20:38:13,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:38:13,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-18 20:38:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-18 20:38:13,495 INFO L87 Difference]: Start difference. First operand 313 states and 467 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 5 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2024-11-18 20:38:16,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:38:16,117 INFO L93 Difference]: Finished difference Result 941 states and 1371 transitions. [2024-11-18 20:38:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 20:38:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 5 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 160 [2024-11-18 20:38:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:38:16,122 INFO L225 Difference]: With dead ends: 941 [2024-11-18 20:38:16,122 INFO L226 Difference]: Without dead ends: 631 [2024-11-18 20:38:16,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2024-11-18 20:38:16,123 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 819 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-18 20:38:16,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 895 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-18 20:38:16,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2024-11-18 20:38:16,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 515. [2024-11-18 20:38:16,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 397 states have (on average 1.4005037783375316) internal successors, (556), 400 states have internal predecessors, (556), 102 states have call successors, (102), 15 states have call predecessors, (102), 15 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-18 20:38:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 760 transitions. [2024-11-18 20:38:16,182 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 760 transitions. Word has length 160 [2024-11-18 20:38:16,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:38:16,183 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 760 transitions. [2024-11-18 20:38:16,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 5 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2024-11-18 20:38:16,183 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 760 transitions. [2024-11-18 20:38:16,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 20:38:16,186 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:38:16,187 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:16,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 20:38:16,187 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:38:16,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:38:16,187 INFO L85 PathProgramCache]: Analyzing trace with hash 702771700, now seen corresponding path program 1 times [2024-11-18 20:38:16,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:38:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877943641] [2024-11-18 20:38:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:38:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:38:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:38:16,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 20:38:16,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:38:16,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877943641] [2024-11-18 20:38:16,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877943641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:38:16,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:38:16,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:38:16,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336507725] [2024-11-18 20:38:16,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:38:16,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:38:16,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:38:16,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:38:16,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:38:16,275 INFO L87 Difference]: Start difference. First operand 515 states and 760 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 20:38:16,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:38:16,594 INFO L93 Difference]: Finished difference Result 1043 states and 1527 transitions. [2024-11-18 20:38:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:38:16,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 160 [2024-11-18 20:38:16,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:38:16,597 INFO L225 Difference]: With dead ends: 1043 [2024-11-18 20:38:16,597 INFO L226 Difference]: Without dead ends: 589 [2024-11-18 20:38:16,602 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:38:16,603 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 109 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 20:38:16,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 443 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 20:38:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-18 20:38:16,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 521. [2024-11-18 20:38:16,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 402 states have (on average 1.3955223880597014) internal successors, (561), 405 states have internal predecessors, (561), 102 states have call successors, (102), 16 states have call predecessors, (102), 16 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-18 20:38:16,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 765 transitions. [2024-11-18 20:38:16,656 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 765 transitions. Word has length 160 [2024-11-18 20:38:16,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:38:16,657 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 765 transitions. [2024-11-18 20:38:16,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-18 20:38:16,658 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 765 transitions. [2024-11-18 20:38:16,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-18 20:38:16,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:38:16,659 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:16,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 20:38:16,660 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:38:16,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:38:16,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1832862316, now seen corresponding path program 1 times [2024-11-18 20:38:16,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:38:16,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893237899] [2024-11-18 20:38:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:38:16,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:38:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:38:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-11-18 20:38:16,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:38:16,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893237899] [2024-11-18 20:38:16,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893237899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 20:38:16,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 20:38:16,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 20:38:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418445967] [2024-11-18 20:38:16,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 20:38:16,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 20:38:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:38:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 20:38:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-18 20:38:16,870 INFO L87 Difference]: Start difference. First operand 521 states and 765 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 20:38:17,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 20:38:17,189 INFO L93 Difference]: Finished difference Result 1029 states and 1489 transitions. [2024-11-18 20:38:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 20:38:17,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 160 [2024-11-18 20:38:17,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 20:38:17,194 INFO L225 Difference]: With dead ends: 1029 [2024-11-18 20:38:17,195 INFO L226 Difference]: Without dead ends: 572 [2024-11-18 20:38:17,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-18 20:38:17,196 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 202 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-18 20:38:17,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 230 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-18 20:38:17,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-18 20:38:17,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 492. [2024-11-18 20:38:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 373 states have (on average 1.3646112600536193) internal successors, (509), 376 states have internal predecessors, (509), 102 states have call successors, (102), 16 states have call predecessors, (102), 16 states have return successors, (102), 99 states have call predecessors, (102), 102 states have call successors, (102) [2024-11-18 20:38:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 713 transitions. [2024-11-18 20:38:17,244 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 713 transitions. Word has length 160 [2024-11-18 20:38:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 20:38:17,244 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 713 transitions. [2024-11-18 20:38:17,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-18 20:38:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 713 transitions. [2024-11-18 20:38:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-18 20:38:17,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 20:38:17,246 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:38:17,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 20:38:17,246 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 20:38:17,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 20:38:17,247 INFO L85 PathProgramCache]: Analyzing trace with hash -358077958, now seen corresponding path program 1 times [2024-11-18 20:38:17,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 20:38:17,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286647684] [2024-11-18 20:38:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:38:17,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 20:38:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:38:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 36 proven. 96 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2024-11-18 20:38:21,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 20:38:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286647684] [2024-11-18 20:38:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286647684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 20:38:21,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200240726] [2024-11-18 20:38:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 20:38:21,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 20:38:21,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 20:38:21,485 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 20:38:21,490 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 20:38:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 20:38:21,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-18 20:38:21,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 20:38:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 581 proven. 225 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2024-11-18 20:38:23,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 20:38:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 60 proven. 255 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2024-11-18 20:38:26,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200240726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 20:38:26,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 20:38:26,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 22] total 52 [2024-11-18 20:38:26,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726693960] [2024-11-18 20:38:26,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 20:38:26,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-18 20:38:26,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 20:38:26,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-18 20:38:26,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=493, Invalid=2159, Unknown=0, NotChecked=0, Total=2652 [2024-11-18 20:38:26,461 INFO L87 Difference]: Start difference. First operand 492 states and 713 transitions. Second operand has 52 states, 48 states have (on average 2.9375) internal successors, (141), 44 states have internal predecessors, (141), 17 states have call successors, (67), 7 states have call predecessors, (67), 14 states have return successors, (68), 18 states have call predecessors, (68), 17 states have call successors, (68)