./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-74.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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_floatingpointinfluence_no-floats_file-74.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 16cd25d5ee96e9312308044e9eb88c0f13c8398163b5a1d192ff53bfebca792b --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 13:50:45,305 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 13:50:45,351 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 13:50:45,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 13:50:45,355 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 13:50:45,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 13:50:45,374 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 13:50:45,374 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 13:50:45,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 13:50:45,375 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 13:50:45,375 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 13:50:45,376 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 13:50:45,376 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 13:50:45,376 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 13:50:45,376 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 13:50:45,376 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 13:50:45,377 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 13:50:45,378 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 13:50:45,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 13:50:45,378 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 16cd25d5ee96e9312308044e9eb88c0f13c8398163b5a1d192ff53bfebca792b [2025-03-08 13:50:45,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 13:50:45,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 13:50:45,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 13:50:45,603 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 13:50:45,603 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 13:50:45,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-74.i [2025-03-08 13:50:46,740 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecba22356/c8ffef04cda34ed19b7f4751d2102d03/FLAG672315142 [2025-03-08 13:50:46,952 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 13:50:46,952 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-74.i [2025-03-08 13:50:46,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecba22356/c8ffef04cda34ed19b7f4751d2102d03/FLAG672315142 [2025-03-08 13:50:47,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ecba22356/c8ffef04cda34ed19b7f4751d2102d03 [2025-03-08 13:50:47,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 13:50:47,307 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 13:50:47,308 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 13:50:47,308 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 13:50:47,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 13:50:47,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7783aab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47, skipping insertion in model container [2025-03-08 13:50:47,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,324 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 13:50:47,430 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_floatingpointinfluence_no-floats_file-74.i[916,929] [2025-03-08 13:50:47,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 13:50:47,463 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 13:50:47,469 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_floatingpointinfluence_no-floats_file-74.i[916,929] [2025-03-08 13:50:47,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 13:50:47,497 INFO L204 MainTranslator]: Completed translation [2025-03-08 13:50:47,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47 WrapperNode [2025-03-08 13:50:47,498 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 13:50:47,499 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 13:50:47,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 13:50:47,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 13:50:47,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,528 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2025-03-08 13:50:47,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 13:50:47,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 13:50:47,529 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 13:50:47,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 13:50:47,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,535 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,536 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,544 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]. [2025-03-08 13:50:47,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,547 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 13:50:47,550 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 13:50:47,550 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 13:50:47,550 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 13:50:47,551 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (1/1) ... [2025-03-08 13:50:47,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 13:50:47,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 13:50:47,579 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) [2025-03-08 13:50:47,584 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 [2025-03-08 13:50:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 13:50:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 13:50:47,600 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 13:50:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 13:50:47,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 13:50:47,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 13:50:47,656 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 13:50:47,659 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 13:50:47,846 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-08 13:50:47,846 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 13:50:47,853 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 13:50:47,854 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 13:50:47,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 01:50:47 BoogieIcfgContainer [2025-03-08 13:50:47,854 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 13:50:47,856 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 13:50:47,856 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 13:50:47,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 13:50:47,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 01:50:47" (1/3) ... [2025-03-08 13:50:47,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2162fa22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 01:50:47, skipping insertion in model container [2025-03-08 13:50:47,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 01:50:47" (2/3) ... [2025-03-08 13:50:47,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2162fa22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 01:50:47, skipping insertion in model container [2025-03-08 13:50:47,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 01:50:47" (3/3) ... [2025-03-08 13:50:47,861 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-74.i [2025-03-08 13:50:47,871 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 13:50:47,872 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-74.i that has 2 procedures, 58 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 13:50:47,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 13:50:47,921 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;@16e55ce9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 13:50:47,921 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 13:50:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 13:50:47,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-08 13:50:47,933 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 13:50:47,934 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 13:50:47,934 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 13:50:47,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 13:50:47,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1146677637, now seen corresponding path program 1 times [2025-03-08 13:50:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 13:50:47,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152307120] [2025-03-08 13:50:47,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 13:50:47,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 13:50:48,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 13:50:48,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 13:50:48,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 13:50:48,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 13:50:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2025-03-08 13:50:48,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 13:50:48,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152307120] [2025-03-08 13:50:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152307120] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 13:50:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182031414] [2025-03-08 13:50:48,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 13:50:48,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 13:50:48,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 13:50:48,179 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) [2025-03-08 13:50:48,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 13:50:48,240 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 13:50:48,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 13:50:48,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 13:50:48,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 13:50:48,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 13:50:48,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 13:50:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2025-03-08 13:50:48,333 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 13:50:48,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182031414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 13:50:48,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 13:50:48,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 13:50:48,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017027491] [2025-03-08 13:50:48,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 13:50:48,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 13:50:48,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 13:50:48,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 13:50:48,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 13:50:48,353 INFO L87 Difference]: Start difference. First operand has 58 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) 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, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 13:50:48,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 13:50:48,368 INFO L93 Difference]: Finished difference Result 110 states and 191 transitions. [2025-03-08 13:50:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 13:50:48,369 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, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) Word has length 134 [2025-03-08 13:50:48,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 13:50:48,373 INFO L225 Difference]: With dead ends: 110 [2025-03-08 13:50:48,373 INFO L226 Difference]: Without dead ends: 55 [2025-03-08 13:50:48,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 13:50:48,377 INFO L435 NwaCegarLoop]: 82 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, 82 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 [2025-03-08 13:50:48,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 13:50:48,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-03-08 13:50:48,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2025-03-08 13:50:48,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-08 13:50:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions. [2025-03-08 13:50:48,410 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 134 [2025-03-08 13:50:48,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 13:50:48,410 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 82 transitions. [2025-03-08 13:50:48,410 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, (22), 2 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 2 states have call successors, (22) [2025-03-08 13:50:48,410 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions. [2025-03-08 13:50:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-08 13:50:48,413 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 13:50:48,413 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 13:50:48,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 13:50:48,613 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 [2025-03-08 13:50:48,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 13:50:48,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 13:50:48,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1272760091, now seen corresponding path program 1 times [2025-03-08 13:50:48,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 13:50:48,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701444552] [2025-03-08 13:50:48,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 13:50:48,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 13:50:48,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 13:50:48,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 13:50:48,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 13:50:48,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 13:50:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-08 13:50:51,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 13:50:51,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701444552] [2025-03-08 13:50:51,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701444552] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 13:50:51,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 13:50:51,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 13:50:51,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690088560] [2025-03-08 13:50:51,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 13:50:51,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 13:50:51,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 13:50:51,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 13:50:51,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-03-08 13:50:51,166 INFO L87 Difference]: Start difference. First operand 55 states and 82 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-08 13:50:51,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 13:50:51,553 INFO L93 Difference]: Finished difference Result 138 states and 200 transitions. [2025-03-08 13:50:51,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 13:50:51,553 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 134 [2025-03-08 13:50:51,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 13:50:51,555 INFO L225 Difference]: With dead ends: 138 [2025-03-08 13:50:51,555 INFO L226 Difference]: Without dead ends: 136 [2025-03-08 13:50:51,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-03-08 13:50:51,556 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 90 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 13:50:51,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 447 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 13:50:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-08 13:50:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 101. [2025-03-08 13:50:51,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-08 13:50:51,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 152 transitions. [2025-03-08 13:50:51,586 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 152 transitions. Word has length 134 [2025-03-08 13:50:51,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 13:50:51,588 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 152 transitions. [2025-03-08 13:50:51,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-08 13:50:51,588 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 152 transitions. [2025-03-08 13:50:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-03-08 13:50:51,590 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 13:50:51,590 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 13:50:51,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 13:50:51,590 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 13:50:51,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 13:50:51,590 INFO L85 PathProgramCache]: Analyzing trace with hash 470050244, now seen corresponding path program 1 times [2025-03-08 13:50:51,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 13:50:51,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464584223] [2025-03-08 13:50:51,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 13:50:51,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 13:50:51,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-03-08 13:50:51,624 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-03-08 13:50:51,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 13:50:51,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 13:50:51,803 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-08 13:50:51,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 13:50:51,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464584223] [2025-03-08 13:50:51,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464584223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 13:50:51,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 13:50:51,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 13:50:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27765547] [2025-03-08 13:50:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 13:50:51,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 13:50:51,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 13:50:51,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 13:50:51,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 13:50:51,808 INFO L87 Difference]: Start difference. First operand 101 states and 152 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-08 13:50:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 13:50:51,944 INFO L93 Difference]: Finished difference Result 164 states and 246 transitions. [2025-03-08 13:50:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 13:50:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 134 [2025-03-08 13:50:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 13:50:51,948 INFO L225 Difference]: With dead ends: 164 [2025-03-08 13:50:51,948 INFO L226 Difference]: Without dead ends: 112 [2025-03-08 13:50:51,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-08 13:50:51,950 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 13:50:51,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 260 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 13:50:51,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-03-08 13:50:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 101. [2025-03-08 13:50:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-08 13:50:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 151 transitions. [2025-03-08 13:50:51,972 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 151 transitions. Word has length 134 [2025-03-08 13:50:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 13:50:51,972 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 151 transitions. [2025-03-08 13:50:51,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-08 13:50:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 151 transitions. [2025-03-08 13:50:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-08 13:50:51,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 13:50:51,974 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 13:50:51,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 13:50:51,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 13:50:51,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 13:50:51,974 INFO L85 PathProgramCache]: Analyzing trace with hash -653955777, now seen corresponding path program 1 times [2025-03-08 13:50:51,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 13:50:51,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599799681] [2025-03-08 13:50:51,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 13:50:51,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 13:50:51,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-08 13:50:52,026 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 13:50:52,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 13:50:52,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 13:51:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2025-03-08 13:51:54,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 13:51:54,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599799681] [2025-03-08 13:51:54,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599799681] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 13:51:54,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 13:51:54,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 13:51:54,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963655766] [2025-03-08 13:51:54,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 13:51:54,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 13:51:54,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 13:51:54,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 13:51:54,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2025-03-08 13:51:54,552 INFO L87 Difference]: Start difference. First operand 101 states and 151 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-08 13:51:54,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 13:51:54,985 INFO L93 Difference]: Finished difference Result 130 states and 186 transitions. [2025-03-08 13:51:54,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 13:51:54,986 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 135 [2025-03-08 13:51:54,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 13:51:54,987 INFO L225 Difference]: With dead ends: 130 [2025-03-08 13:51:54,987 INFO L226 Difference]: Without dead ends: 128 [2025-03-08 13:51:54,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2025-03-08 13:51:54,988 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 70 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 13:51:54,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 432 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 13:51:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-03-08 13:51:55,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 103. [2025-03-08 13:51:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 56 states have (on average 1.1964285714285714) internal successors, (67), 56 states have internal predecessors, (67), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-03-08 13:51:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 155 transitions. [2025-03-08 13:51:55,005 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 155 transitions. Word has length 135 [2025-03-08 13:51:55,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 13:51:55,006 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 155 transitions. [2025-03-08 13:51:55,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2025-03-08 13:51:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 155 transitions. [2025-03-08 13:51:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-08 13:51:55,009 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 13:51:55,010 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 13:51:55,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 13:51:55,010 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 13:51:55,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 13:51:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash 259406492, now seen corresponding path program 1 times [2025-03-08 13:51:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 13:51:55,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840442542] [2025-03-08 13:51:55,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 13:51:55,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 13:51:55,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-08 13:51:55,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-08 13:51:55,045 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 13:51:55,045 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat