./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-14.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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_loopvsstraightlinecode_25-1loop_file-14.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 3cc62b0a7b5ca086e8c61d00992860cd8ca304621a0a6299cced66b64f38849b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 16:18:34,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 16:18:34,474 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 16:18:34,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 16:18:34,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 16:18:34,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 16:18:34,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 16:18:34,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 16:18:34,516 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 16:18:34,518 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 16:18:34,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 16:18:34,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 16:18:34,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 16:18:34,522 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 16:18:34,522 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 16:18:34,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 16:18:34,523 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 16:18:34,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 16:18:34,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 16:18:34,524 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 16:18:34,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 16:18:34,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 16:18:34,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 16:18:34,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 16:18:34,529 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 16:18:34,529 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 16:18:34,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 16:18:34,530 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 16:18:34,530 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 16:18:34,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 16:18:34,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 16:18:34,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 16:18:34,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 16:18:34,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 16:18:34,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 16:18:34,534 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 16:18:34,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 16:18:34,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 16:18:34,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 16:18:34,535 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 16:18:34,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 16:18:34,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 16:18:34,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3cc62b0a7b5ca086e8c61d00992860cd8ca304621a0a6299cced66b64f38849b [2024-11-16 16:18:34,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 16:18:34,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 16:18:34,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 16:18:34,814 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 16:18:34,814 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 16:18:34,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-14.i [2024-11-16 16:18:36,410 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 16:18:36,608 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 16:18:36,609 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-1loop_file-14.i [2024-11-16 16:18:36,618 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d84e660/a720974d99ba4cbabb2473b5b296bd01/FLAGf1284a627 [2024-11-16 16:18:36,635 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0d84e660/a720974d99ba4cbabb2473b5b296bd01 [2024-11-16 16:18:36,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 16:18:36,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 16:18:36,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 16:18:36,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 16:18:36,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 16:18:36,649 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:36,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6314c36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36, skipping insertion in model container [2024-11-16 16:18:36,651 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:36,677 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 16:18:36,832 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_loopvsstraightlinecode_25-1loop_file-14.i[915,928] [2024-11-16 16:18:36,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 16:18:36,903 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 16:18:36,914 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_loopvsstraightlinecode_25-1loop_file-14.i[915,928] [2024-11-16 16:18:36,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 16:18:36,949 INFO L204 MainTranslator]: Completed translation [2024-11-16 16:18:36,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36 WrapperNode [2024-11-16 16:18:36,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 16:18:36,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 16:18:36,951 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 16:18:36,951 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 16:18:36,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:36,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,022 INFO L138 Inliner]: procedures = 26, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 120 [2024-11-16 16:18:37,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 16:18:37,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 16:18:37,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 16:18:37,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 16:18:37,033 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,035 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,050 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]. [2024-11-16 16:18:37,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,051 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,055 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,056 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 16:18:37,061 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 16:18:37,062 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 16:18:37,062 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 16:18:37,063 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (1/1) ... [2024-11-16 16:18:37,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 16:18:37,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 16:18:37,109 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) [2024-11-16 16:18:37,112 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 [2024-11-16 16:18:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 16:18:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 16:18:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 16:18:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 16:18:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 16:18:37,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 16:18:37,256 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 16:18:37,259 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 16:18:37,555 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-16 16:18:37,555 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 16:18:37,575 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 16:18:37,575 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 16:18:37,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:18:37 BoogieIcfgContainer [2024-11-16 16:18:37,576 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 16:18:37,579 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 16:18:37,580 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 16:18:37,583 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 16:18:37,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:18:36" (1/3) ... [2024-11-16 16:18:37,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5ae285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:37, skipping insertion in model container [2024-11-16 16:18:37,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:18:36" (2/3) ... [2024-11-16 16:18:37,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5ae285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:18:37, skipping insertion in model container [2024-11-16 16:18:37,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:18:37" (3/3) ... [2024-11-16 16:18:37,591 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-1loop_file-14.i [2024-11-16 16:18:37,609 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 16:18:37,610 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 16:18:37,707 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 16:18:37,718 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;@31bd9637, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 16:18:37,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 16:18:37,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 36 states have internal predecessors, (45), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 16:18:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 16:18:37,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:18:37,741 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:18:37,742 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:18:37,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:18:37,749 INFO L85 PathProgramCache]: Analyzing trace with hash -209972220, now seen corresponding path program 1 times [2024-11-16 16:18:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:18:37,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009753721] [2024-11-16 16:18:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:18:37,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:18:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:18:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:18:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:18:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:18:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:18:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 16:18:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 16:18:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 16:18:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 16:18:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-16 16:18:38,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 16:18:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 16:18:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 16:18:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 16:18:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-16 16:18:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-16 16:18:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-16 16:18:38,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:18:38,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009753721] [2024-11-16 16:18:38,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009753721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:18:38,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:18:38,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 16:18:38,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120054039] [2024-11-16 16:18:38,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:18:38,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 16:18:38,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:18:38,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 16:18:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 16:18:38,297 INFO L87 Difference]: Start difference. First operand has 54 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 36 states have internal predecessors, (45), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-16 16:18:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:18:38,321 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2024-11-16 16:18:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 16:18:38,324 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) Word has length 106 [2024-11-16 16:18:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:18:38,344 INFO L225 Difference]: With dead ends: 104 [2024-11-16 16:18:38,344 INFO L226 Difference]: Without dead ends: 49 [2024-11-16 16:18:38,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 16:18:38,356 INFO L432 NwaCegarLoop]: 73 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, 73 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 [2024-11-16 16:18:38,358 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:18:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-16 16:18:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-16 16:18:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-16 16:18:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2024-11-16 16:18:38,441 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 69 transitions. Word has length 106 [2024-11-16 16:18:38,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:18:38,446 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 69 transitions. [2024-11-16 16:18:38,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-16 16:18:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 69 transitions. [2024-11-16 16:18:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 16:18:38,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:18:38,450 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:18:38,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 16:18:38,451 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:18:38,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:18:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash -965041148, now seen corresponding path program 1 times [2024-11-16 16:18:38,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:18:38,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280133133] [2024-11-16 16:18:38,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:18:38,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:18:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:18:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:18:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:18:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:18:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:18:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:38,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 16:18:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 16:18:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 16:18:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 16:18:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-16 16:18:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 16:18:39,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 16:18:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 16:18:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 16:18:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-16 16:18:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-16 16:18:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-16 16:18:39,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:18:39,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280133133] [2024-11-16 16:18:39,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280133133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:18:39,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:18:39,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 16:18:39,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278266580] [2024-11-16 16:18:39,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:18:39,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 16:18:39,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:18:39,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 16:18:39,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:18:39,114 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-16 16:18:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:18:39,174 INFO L93 Difference]: Finished difference Result 141 states and 201 transitions. [2024-11-16 16:18:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 16:18:39,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 106 [2024-11-16 16:18:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:18:39,178 INFO L225 Difference]: With dead ends: 141 [2024-11-16 16:18:39,179 INFO L226 Difference]: Without dead ends: 95 [2024-11-16 16:18:39,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 16:18:39,181 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 33 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 16:18:39,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 125 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 16:18:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-16 16:18:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2024-11-16 16:18:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 57 states have internal predecessors, (68), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-16 16:18:39,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 132 transitions. [2024-11-16 16:18:39,203 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 132 transitions. Word has length 106 [2024-11-16 16:18:39,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:18:39,204 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 132 transitions. [2024-11-16 16:18:39,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-16 16:18:39,205 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 132 transitions. [2024-11-16 16:18:39,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 16:18:39,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:18:39,207 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:18:39,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 16:18:39,207 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:18:39,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:18:39,208 INFO L85 PathProgramCache]: Analyzing trace with hash 777769187, now seen corresponding path program 1 times [2024-11-16 16:18:39,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:18:39,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611899475] [2024-11-16 16:18:39,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:18:39,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:18:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 16:18:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 16:18:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 16:18:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-11-16 16:18:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-16 16:18:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 16:18:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 16:18:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-16 16:18:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 16:18:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-16 16:18:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 16:18:39,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 16:18:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 16:18:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-16 16:18:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-16 16:18:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-11-16 16:18:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 16:18:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-11-16 16:18:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 16:18:39,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611899475] [2024-11-16 16:18:39,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611899475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 16:18:39,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 16:18:39,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 16:18:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715820539] [2024-11-16 16:18:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 16:18:39,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 16:18:39,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 16:18:39,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 16:18:39,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 16:18:39,620 INFO L87 Difference]: Start difference. First operand 92 states and 132 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-16 16:18:39,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 16:18:39,786 INFO L93 Difference]: Finished difference Result 197 states and 278 transitions. [2024-11-16 16:18:39,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 16:18:39,788 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 106 [2024-11-16 16:18:39,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 16:18:39,790 INFO L225 Difference]: With dead ends: 197 [2024-11-16 16:18:39,790 INFO L226 Difference]: Without dead ends: 108 [2024-11-16 16:18:39,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 16:18:39,796 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 68 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 16:18:39,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 186 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 16:18:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-16 16:18:39,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 92. [2024-11-16 16:18:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 57 states have internal predecessors, (67), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-16 16:18:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 131 transitions. [2024-11-16 16:18:39,827 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 131 transitions. Word has length 106 [2024-11-16 16:18:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 16:18:39,830 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 131 transitions. [2024-11-16 16:18:39,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-16 16:18:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 131 transitions. [2024-11-16 16:18:39,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 16:18:39,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 16:18:39,831 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 16:18:39,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 16:18:39,832 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 16:18:39,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 16:18:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash 906851906, now seen corresponding path program 1 times [2024-11-16 16:18:39,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 16:18:39,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654821347] [2024-11-16 16:18:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 16:18:39,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 16:18:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat