./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-56.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 0099f1ae0b0455065bfe0355de19f44eec2ea7eff30cffa8e7ce9d1f799b3467 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 09:44:35,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 09:44:35,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 09:44:35,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 09:44:35,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 09:44:35,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 09:44:35,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 09:44:35,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 09:44:35,418 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 09:44:35,418 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 09:44:35,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 09:44:35,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 09:44:35,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 09:44:35,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 09:44:35,418 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 09:44:35,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 09:44:35,419 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 09:44:35,420 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 09:44:35,420 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 09:44:35,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:44:35,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:44:35,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:44:35,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:44:35,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 09:44:35,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:44:35,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:44:35,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:44:35,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:44:35,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 09:44:35,421 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 09:44:35,421 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 09:44:35,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 09:44:35,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 09:44:35,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 09:44:35,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 09:44:35,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 09:44:35,421 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 09:44:35,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 09:44:35,421 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-jdk21/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 -> 0099f1ae0b0455065bfe0355de19f44eec2ea7eff30cffa8e7ce9d1f799b3467 [2025-01-09 09:44:35,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 09:44:35,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 09:44:35,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 09:44:35,613 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 09:44:35,613 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 09:44:35,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-56.i [2025-01-09 09:44:36,804 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dcf24de10/651525c0b5c94a6b8645570a6e71dee4/FLAGa1e48b7d3 [2025-01-09 09:44:37,093 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 09:44:37,096 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-56.i [2025-01-09 09:44:37,112 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dcf24de10/651525c0b5c94a6b8645570a6e71dee4/FLAGa1e48b7d3 [2025-01-09 09:44:37,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/dcf24de10/651525c0b5c94a6b8645570a6e71dee4 [2025-01-09 09:44:37,124 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 09:44:37,125 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 09:44:37,126 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 09:44:37,126 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 09:44:37,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 09:44:37,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45728ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37, skipping insertion in model container [2025-01-09 09:44:37,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,147 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 09:44:37,230 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-56.i[916,929] [2025-01-09 09:44:37,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:44:37,340 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 09:44:37,355 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-250_file-56.i[916,929] [2025-01-09 09:44:37,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:44:37,431 INFO L204 MainTranslator]: Completed translation [2025-01-09 09:44:37,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37 WrapperNode [2025-01-09 09:44:37,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 09:44:37,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 09:44:37,435 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 09:44:37,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 09:44:37,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,492 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 521 [2025-01-09 09:44:37,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 09:44:37,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 09:44:37,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 09:44:37,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 09:44:37,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,543 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]. [2025-01-09 09:44:37,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,562 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,568 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,586 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 09:44:37,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 09:44:37,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 09:44:37,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 09:44:37,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (1/1) ... [2025-01-09 09:44:37,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:44:37,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:44:37,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 09:44:37,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 09:44:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 09:44:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 09:44:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 09:44:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 09:44:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 09:44:37,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 09:44:37,745 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 09:44:37,747 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 09:44:38,399 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2025-01-09 09:44:38,399 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 09:44:38,410 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 09:44:38,413 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 09:44:38,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:44:38 BoogieIcfgContainer [2025-01-09 09:44:38,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 09:44:38,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 09:44:38,416 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 09:44:38,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 09:44:38,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:44:37" (1/3) ... [2025-01-09 09:44:38,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5235c152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:44:38, skipping insertion in model container [2025-01-09 09:44:38,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:44:37" (2/3) ... [2025-01-09 09:44:38,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5235c152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:44:38, skipping insertion in model container [2025-01-09 09:44:38,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:44:38" (3/3) ... [2025-01-09 09:44:38,421 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-56.i [2025-01-09 09:44:38,433 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 09:44:38,435 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-250_file-56.i that has 2 procedures, 220 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 09:44:38,488 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 09:44:38,497 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;@4e8083bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 09:44:38,497 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 09:44:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 220 states, 137 states have (on average 1.489051094890511) internal successors, (204), 138 states have internal predecessors, (204), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2025-01-09 09:44:38,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2025-01-09 09:44:38,529 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:38,531 INFO L218 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:38,531 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:38,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:38,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1862720304, now seen corresponding path program 1 times [2025-01-09 09:44:38,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:38,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064576526] [2025-01-09 09:44:38,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:38,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:38,650 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 498 statements into 1 equivalence classes. [2025-01-09 09:44:38,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 498 of 498 statements. [2025-01-09 09:44:38,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:38,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 158 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2025-01-09 09:44:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064576526] [2025-01-09 09:44:38,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064576526] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:44:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099423825] [2025-01-09 09:44:38,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:38,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:44:38,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:44:38,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 09:44:38,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 09:44:39,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 498 statements into 1 equivalence classes. [2025-01-09 09:44:39,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 498 of 498 statements. [2025-01-09 09:44:39,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:39,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:39,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 09:44:39,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:44:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2025-01-09 09:44:39,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 09:44:39,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099423825] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:44:39,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 09:44:39,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 09:44:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215282958] [2025-01-09 09:44:39,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:44:39,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 09:44:39,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:39,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 09:44:39,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 09:44:39,387 INFO L87 Difference]: Start difference. First operand has 220 states, 137 states have (on average 1.489051094890511) internal successors, (204), 138 states have internal predecessors, (204), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2025-01-09 09:44:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:39,438 INFO L93 Difference]: Finished difference Result 434 states and 803 transitions. [2025-01-09 09:44:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 09:44:39,440 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) Word has length 498 [2025-01-09 09:44:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:39,445 INFO L225 Difference]: With dead ends: 434 [2025-01-09 09:44:39,445 INFO L226 Difference]: Without dead ends: 217 [2025-01-09 09:44:39,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 09:44:39,450 INFO L435 NwaCegarLoop]: 359 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, 359 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 [2025-01-09 09:44:39,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:44:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2025-01-09 09:44:39,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2025-01-09 09:44:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 135 states have (on average 1.474074074074074) internal successors, (199), 135 states have internal predecessors, (199), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2025-01-09 09:44:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 359 transitions. [2025-01-09 09:44:39,509 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 359 transitions. Word has length 498 [2025-01-09 09:44:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:39,509 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 359 transitions. [2025-01-09 09:44:39,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 51.5) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2025-01-09 09:44:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 359 transitions. [2025-01-09 09:44:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2025-01-09 09:44:39,521 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:39,521 INFO L218 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:39,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 09:44:39,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 09:44:39,726 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:39,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:39,728 INFO L85 PathProgramCache]: Analyzing trace with hash 97174600, now seen corresponding path program 1 times [2025-01-09 09:44:39,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:39,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771589107] [2025-01-09 09:44:39,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:39,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:39,767 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 498 statements into 1 equivalence classes. [2025-01-09 09:44:39,840 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 498 of 498 statements. [2025-01-09 09:44:39,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:39,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2025-01-09 09:44:40,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:40,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771589107] [2025-01-09 09:44:40,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771589107] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:44:40,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:44:40,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 09:44:40,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410241338] [2025-01-09 09:44:40,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:44:40,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 09:44:40,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:40,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 09:44:40,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:44:40,181 INFO L87 Difference]: Start difference. First operand 217 states and 359 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2025-01-09 09:44:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:40,283 INFO L93 Difference]: Finished difference Result 556 states and 923 transitions. [2025-01-09 09:44:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 09:44:40,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 498 [2025-01-09 09:44:40,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:40,290 INFO L225 Difference]: With dead ends: 556 [2025-01-09 09:44:40,290 INFO L226 Difference]: Without dead ends: 342 [2025-01-09 09:44:40,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 09:44:40,295 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 199 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 09:44:40,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 782 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 09:44:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2025-01-09 09:44:40,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 339. [2025-01-09 09:44:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 218 states have (on average 1.4770642201834863) internal successors, (322), 219 states have internal predecessors, (322), 118 states have call successors, (118), 2 states have call predecessors, (118), 2 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2025-01-09 09:44:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 558 transitions. [2025-01-09 09:44:40,351 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 558 transitions. Word has length 498 [2025-01-09 09:44:40,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:40,352 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 558 transitions. [2025-01-09 09:44:40,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2025-01-09 09:44:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 558 transitions. [2025-01-09 09:44:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2025-01-09 09:44:40,358 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:40,358 INFO L218 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:40,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 09:44:40,359 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:40,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1061487647, now seen corresponding path program 1 times [2025-01-09 09:44:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:40,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136006883] [2025-01-09 09:44:40,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:40,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 499 statements into 1 equivalence classes. [2025-01-09 09:44:40,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 499 of 499 statements. [2025-01-09 09:44:40,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:40,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:44:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2025-01-09 09:44:41,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:44:41,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136006883] [2025-01-09 09:44:41,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136006883] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:44:41,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:44:41,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 09:44:41,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480564840] [2025-01-09 09:44:41,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:44:41,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 09:44:41,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:44:41,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 09:44:41,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:44:41,147 INFO L87 Difference]: Start difference. First operand 339 states and 558 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2025-01-09 09:44:41,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:44:41,552 INFO L93 Difference]: Finished difference Result 898 states and 1481 transitions. [2025-01-09 09:44:41,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 09:44:41,553 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) Word has length 499 [2025-01-09 09:44:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:44:41,560 INFO L225 Difference]: With dead ends: 898 [2025-01-09 09:44:41,560 INFO L226 Difference]: Without dead ends: 562 [2025-01-09 09:44:41,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 09:44:41,562 INFO L435 NwaCegarLoop]: 338 mSDtfsCounter, 587 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 09:44:41,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 514 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 09:44:41,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2025-01-09 09:44:41,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 558. [2025-01-09 09:44:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 383 states have (on average 1.516971279373368) internal successors, (581), 386 states have internal predecessors, (581), 170 states have call successors, (170), 4 states have call predecessors, (170), 4 states have return successors, (170), 167 states have call predecessors, (170), 170 states have call successors, (170) [2025-01-09 09:44:41,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 921 transitions. [2025-01-09 09:44:41,612 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 921 transitions. Word has length 499 [2025-01-09 09:44:41,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:44:41,613 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 921 transitions. [2025-01-09 09:44:41,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 2 states have call predecessors, (80), 2 states have call successors, (80) [2025-01-09 09:44:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 921 transitions. [2025-01-09 09:44:41,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2025-01-09 09:44:41,616 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:44:41,617 INFO L218 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:44:41,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 09:44:41,617 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:44:41,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:44:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1635336215, now seen corresponding path program 1 times [2025-01-09 09:44:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:44:41,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087717027] [2025-01-09 09:44:41,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:44:41,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:44:41,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 500 statements into 1 equivalence classes. [2025-01-09 09:44:41,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 500 of 500 statements. [2025-01-09 09:44:41,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:44:41,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat