./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-10.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_fillercodestructure_filler-pr-co_file-10.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 1d2525c514f5f41938cb8dbff9fda78c478979aa19fdef1a39087aafe1b8a708 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 11:24:24,497 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 11:24:24,543 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 11:24:24,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 11:24:24,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 11:24:24,568 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 11:24:24,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 11:24:24,568 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 11:24:24,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 11:24:24,569 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 11:24:24,569 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 11:24:24,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 11:24:24,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 11:24:24,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 11:24:24,569 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 11:24:24,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 11:24:24,570 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 11:24:24,571 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 11:24:24,571 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 11:24:24,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:24:24,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:24:24,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:24:24,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:24:24,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 11:24:24,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:24:24,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:24:24,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:24:24,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:24:24,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 11:24:24,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 11:24:24,572 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 11:24:24,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 11:24:24,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 11:24:24,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 11:24:24,572 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 11:24:24,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 11:24:24,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 11:24:24,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 11:24:24,572 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 -> 1d2525c514f5f41938cb8dbff9fda78c478979aa19fdef1a39087aafe1b8a708 [2025-01-09 11:24:24,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 11:24:24,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 11:24:24,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 11:24:24,846 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 11:24:24,846 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 11:24:24,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i [2025-01-09 11:24:26,007 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9db1a1fe8/3a46c0bbfc4e41df905e590b434df8a3/FLAG502f36983 [2025-01-09 11:24:26,257 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 11:24:26,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i [2025-01-09 11:24:26,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9db1a1fe8/3a46c0bbfc4e41df905e590b434df8a3/FLAG502f36983 [2025-01-09 11:24:26,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9db1a1fe8/3a46c0bbfc4e41df905e590b434df8a3 [2025-01-09 11:24:26,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 11:24:26,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 11:24:26,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 11:24:26,279 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 11:24:26,282 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 11:24:26,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c38d0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26, skipping insertion in model container [2025-01-09 11:24:26,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 11:24:26,409 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_fillercodestructure_filler-pr-co_file-10.i[919,932] [2025-01-09 11:24:26,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:24:26,468 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 11:24:26,474 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_fillercodestructure_filler-pr-co_file-10.i[919,932] [2025-01-09 11:24:26,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:24:26,511 INFO L204 MainTranslator]: Completed translation [2025-01-09 11:24:26,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26 WrapperNode [2025-01-09 11:24:26,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 11:24:26,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 11:24:26,513 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 11:24:26,513 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 11:24:26,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,561 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 315 [2025-01-09 11:24:26,561 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 11:24:26,562 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 11:24:26,562 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 11:24:26,562 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 11:24:26,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,570 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,580 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 11:24:26,580 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,587 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,591 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 11:24:26,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 11:24:26,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 11:24:26,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 11:24:26,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (1/1) ... [2025-01-09 11:24:26,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:24:26,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:24:26,631 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 11:24:26,642 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 11:24:26,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 11:24:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 11:24:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 11:24:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 11:24:26,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 11:24:26,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 11:24:26,748 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 11:24:26,750 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 11:24:27,199 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2025-01-09 11:24:27,199 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 11:24:27,206 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 11:24:27,208 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 11:24:27,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:24:27 BoogieIcfgContainer [2025-01-09 11:24:27,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 11:24:27,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 11:24:27,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 11:24:27,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 11:24:27,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:24:26" (1/3) ... [2025-01-09 11:24:27,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12669f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:24:27, skipping insertion in model container [2025-01-09 11:24:27,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:24:26" (2/3) ... [2025-01-09 11:24:27,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12669f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:24:27, skipping insertion in model container [2025-01-09 11:24:27,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:24:27" (3/3) ... [2025-01-09 11:24:27,216 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i [2025-01-09 11:24:27,227 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 11:24:27,228 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-10.i that has 2 procedures, 136 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 11:24:27,274 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 11:24:27,284 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;@430c451b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 11:24:27,284 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 11:24:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 92 states have internal predecessors, (130), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2025-01-09 11:24:27,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2025-01-09 11:24:27,332 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:24:27,333 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:27,333 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:24:27,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:24:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash -178885499, now seen corresponding path program 1 times [2025-01-09 11:24:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:24:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806465342] [2025-01-09 11:24:27,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:24:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:24:27,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 261 statements into 1 equivalence classes. [2025-01-09 11:24:27,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 261 of 261 statements. [2025-01-09 11:24:27,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:24:27,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:24:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2025-01-09 11:24:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:24:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806465342] [2025-01-09 11:24:28,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806465342] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:24:28,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:24:28,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 11:24:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21096639] [2025-01-09 11:24:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:24:28,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 11:24:28,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:24:28,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 11:24:28,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 11:24:28,350 INFO L87 Difference]: Start difference. First operand has 136 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 92 states have internal predecessors, (130), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2025-01-09 11:24:28,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:24:28,639 INFO L93 Difference]: Finished difference Result 397 states and 718 transitions. [2025-01-09 11:24:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 11:24:28,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) Word has length 261 [2025-01-09 11:24:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:24:28,654 INFO L225 Difference]: With dead ends: 397 [2025-01-09 11:24:28,654 INFO L226 Difference]: Without dead ends: 264 [2025-01-09 11:24:28,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 11:24:28,661 INFO L435 NwaCegarLoop]: 205 mSDtfsCounter, 131 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 11:24:28,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 598 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 11:24:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2025-01-09 11:24:28,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 205. [2025-01-09 11:24:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 118 states have (on average 1.305084745762712) internal successors, (154), 118 states have internal predecessors, (154), 84 states have call successors, (84), 2 states have call predecessors, (84), 2 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2025-01-09 11:24:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 322 transitions. [2025-01-09 11:24:28,740 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 322 transitions. Word has length 261 [2025-01-09 11:24:28,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:24:28,741 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 322 transitions. [2025-01-09 11:24:28,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 1 states have call successors, (42) [2025-01-09 11:24:28,741 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 322 transitions. [2025-01-09 11:24:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-01-09 11:24:28,749 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:24:28,749 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:24:28,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 11:24:28,750 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:24:28,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:24:28,753 INFO L85 PathProgramCache]: Analyzing trace with hash 613462261, now seen corresponding path program 1 times [2025-01-09 11:24:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:24:28,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45923337] [2025-01-09 11:24:28,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:24:28,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:24:28,782 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-01-09 11:24:29,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-01-09 11:24:29,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:24:29,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:25:39,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2025-01-09 11:25:39,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:25:39,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45923337] [2025-01-09 11:25:39,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45923337] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:25:39,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:25:39,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2025-01-09 11:25:39,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624422338] [2025-01-09 11:25:39,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:25:39,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 11:25:39,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:25:39,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 11:25:39,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2025-01-09 11:25:39,257 INFO L87 Difference]: Start difference. First operand 205 states and 322 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 4 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2025-01-09 11:25:50,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:25:50,666 INFO L93 Difference]: Finished difference Result 676 states and 1031 transitions. [2025-01-09 11:25:50,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 11:25:50,666 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 4 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) Word has length 262 [2025-01-09 11:25:50,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:25:50,674 INFO L225 Difference]: With dead ends: 676 [2025-01-09 11:25:50,674 INFO L226 Difference]: Without dead ends: 546 [2025-01-09 11:25:50,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=536, Invalid=1816, Unknown=0, NotChecked=0, Total=2352 [2025-01-09 11:25:50,680 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 2576 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2576 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 2656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2025-01-09 11:25:50,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2576 Valid, 1820 Invalid, 2656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2227 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2025-01-09 11:25:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2025-01-09 11:25:50,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 273. [2025-01-09 11:25:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 183 states have (on average 1.4043715846994536) internal successors, (257), 183 states have internal predecessors, (257), 84 states have call successors, (84), 5 states have call predecessors, (84), 5 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2025-01-09 11:25:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 425 transitions. [2025-01-09 11:25:50,742 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 425 transitions. Word has length 262 [2025-01-09 11:25:50,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:25:50,744 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 425 transitions. [2025-01-09 11:25:50,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 states have internal predecessors, (55), 4 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 4 states have call predecessors, (42), 4 states have call successors, (42) [2025-01-09 11:25:50,744 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 425 transitions. [2025-01-09 11:25:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-01-09 11:25:50,747 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:25:50,748 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:50,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 11:25:50,748 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:25:50,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:25:50,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1761587701, now seen corresponding path program 1 times [2025-01-09 11:25:50,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:25:50,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014661065] [2025-01-09 11:25:50,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:25:50,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:25:50,759 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-01-09 11:25:50,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-01-09 11:25:50,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:25:50,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:25:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2025-01-09 11:25:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:25:56,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014661065] [2025-01-09 11:25:56,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014661065] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:25:56,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:25:56,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2025-01-09 11:25:56,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58003635] [2025-01-09 11:25:56,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:25:56,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 11:25:56,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:25:56,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 11:25:56,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2025-01-09 11:25:56,629 INFO L87 Difference]: Start difference. First operand 273 states and 425 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2025-01-09 11:25:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:25:59,560 INFO L93 Difference]: Finished difference Result 701 states and 1053 transitions. [2025-01-09 11:25:59,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 11:25:59,561 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 262 [2025-01-09 11:25:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:25:59,564 INFO L225 Difference]: With dead ends: 701 [2025-01-09 11:25:59,565 INFO L226 Difference]: Without dead ends: 533 [2025-01-09 11:25:59,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=257, Invalid=865, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 11:25:59,567 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 1196 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 2051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-01-09 11:25:59,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 1648 Invalid, 2051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1889 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-01-09 11:25:59,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-01-09 11:25:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 273. [2025-01-09 11:25:59,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 182 states have (on average 1.3736263736263736) internal successors, (250), 182 states have internal predecessors, (250), 84 states have call successors, (84), 6 states have call predecessors, (84), 6 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2025-01-09 11:25:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 418 transitions. [2025-01-09 11:25:59,606 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 418 transitions. Word has length 262 [2025-01-09 11:25:59,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:25:59,606 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 418 transitions. [2025-01-09 11:25:59,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 3 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2025-01-09 11:25:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 418 transitions. [2025-01-09 11:25:59,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-01-09 11:25:59,612 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:25:59,613 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:59,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 11:25:59,613 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:25:59,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:25:59,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1853321225, now seen corresponding path program 1 times [2025-01-09 11:25:59,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:25:59,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313440230] [2025-01-09 11:25:59,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:25:59,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:25:59,627 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-01-09 11:25:59,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-01-09 11:25:59,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:25:59,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat