./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-98.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-pe-cn_file-98.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 1a96dadd4da1980e4cee86c0d732bfacf9b4c866e17571bb2c756167da4d7973 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 10:46:55,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 10:46:55,664 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 10:46:55,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 10:46:55,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 10:46:55,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 10:46:55,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 10:46:55,692 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 10:46:55,692 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 10:46:55,692 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 10:46:55,693 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 10:46:55,693 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 10:46:55,693 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 10:46:55,693 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 10:46:55,693 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 10:46:55,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 10:46:55,694 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 10:46:55,695 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 10:46:55,695 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 10:46:55,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 10:46:55,695 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 10:46:55,696 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 10:46:55,696 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 10:46:55,696 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 10:46:55,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 10:46:55,696 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 10:46:55,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 10:46:55,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 10:46:55,696 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 -> 1a96dadd4da1980e4cee86c0d732bfacf9b4c866e17571bb2c756167da4d7973 [2025-01-09 10:46:55,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 10:46:55,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 10:46:55,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 10:46:55,941 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 10:46:55,941 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 10:46:55,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-98.i [2025-01-09 10:46:57,037 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1690ab3fa/98ca6f141fc441d189aa8bff1f620b6a/FLAGee386ae59 [2025-01-09 10:46:57,281 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 10:46:57,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-98.i [2025-01-09 10:46:57,293 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1690ab3fa/98ca6f141fc441d189aa8bff1f620b6a/FLAGee386ae59 [2025-01-09 10:46:57,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1690ab3fa/98ca6f141fc441d189aa8bff1f620b6a [2025-01-09 10:46:57,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 10:46:57,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 10:46:57,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 10:46:57,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 10:46:57,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 10:46:57,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e2d95f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57, skipping insertion in model container [2025-01-09 10:46:57,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,630 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 10:46:57,736 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-pe-cn_file-98.i[919,932] [2025-01-09 10:46:57,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 10:46:57,819 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 10:46:57,826 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-pe-cn_file-98.i[919,932] [2025-01-09 10:46:57,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 10:46:57,871 INFO L204 MainTranslator]: Completed translation [2025-01-09 10:46:57,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57 WrapperNode [2025-01-09 10:46:57,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 10:46:57,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 10:46:57,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 10:46:57,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 10:46:57,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,885 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,924 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 269 [2025-01-09 10:46:57,925 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 10:46:57,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 10:46:57,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 10:46:57,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 10:46:57,932 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,941 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,959 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 10:46:57,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,971 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,973 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,977 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 10:46:57,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 10:46:57,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 10:46:57,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 10:46:57,991 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (1/1) ... [2025-01-09 10:46:57,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 10:46:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:46:58,018 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 10:46:58,020 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 10:46:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 10:46:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 10:46:58,038 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 10:46:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 10:46:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 10:46:58,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 10:46:58,115 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 10:46:58,117 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 10:46:58,568 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2025-01-09 10:46:58,569 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 10:46:58,578 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 10:46:58,578 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 10:46:58,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:46:58 BoogieIcfgContainer [2025-01-09 10:46:58,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 10:46:58,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 10:46:58,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 10:46:58,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 10:46:58,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:46:57" (1/3) ... [2025-01-09 10:46:58,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54db205e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:46:58, skipping insertion in model container [2025-01-09 10:46:58,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:46:57" (2/3) ... [2025-01-09 10:46:58,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54db205e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:46:58, skipping insertion in model container [2025-01-09 10:46:58,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:46:58" (3/3) ... [2025-01-09 10:46:58,589 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-98.i [2025-01-09 10:46:58,604 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 10:46:58,606 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-98.i that has 2 procedures, 117 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 10:46:58,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 10:46:58,668 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;@58ee7827, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 10:46:58,669 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 10:46:58,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 73 states have internal predecessors, (101), 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 10:46:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2025-01-09 10:46:58,686 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:46:58,687 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 10:46:58,687 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:46:58,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:46:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1305196442, now seen corresponding path program 1 times [2025-01-09 10:46:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:46:58,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755472499] [2025-01-09 10:46:58,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:46:58,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:46:58,784 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 261 statements into 1 equivalence classes. [2025-01-09 10:46:58,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 261 of 261 statements. [2025-01-09 10:46:58,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:46:58,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:46:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2025-01-09 10:46:58,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:46:58,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755472499] [2025-01-09 10:46:58,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755472499] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 10:46:58,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245395150] [2025-01-09 10:46:58,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:46:58,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 10:46:58,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 10:46:58,983 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 10:46:58,984 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 10:46:59,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 261 statements into 1 equivalence classes. [2025-01-09 10:46:59,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 261 of 261 statements. [2025-01-09 10:46:59,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:46:59,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:46:59,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 10:46:59,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 10:46:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3444 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2025-01-09 10:46:59,232 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 10:46:59,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245395150] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:46:59,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 10:46:59,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 10:46:59,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127495641] [2025-01-09 10:46:59,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:46:59,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 10:46:59,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:46:59,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 10:46:59,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 10:46:59,255 INFO L87 Difference]: Start difference. First operand has 117 states, 72 states have (on average 1.4027777777777777) internal successors, (101), 73 states have internal predecessors, (101), 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 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2025-01-09 10:46:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:46:59,277 INFO L93 Difference]: Finished difference Result 228 states and 407 transitions. [2025-01-09 10:46:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 10:46:59,279 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) Word has length 261 [2025-01-09 10:46:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:46:59,287 INFO L225 Difference]: With dead ends: 228 [2025-01-09 10:46:59,287 INFO L226 Difference]: Without dead ends: 114 [2025-01-09 10:46:59,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 262 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 10:46:59,291 INFO L435 NwaCegarLoop]: 180 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, 180 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 10:46:59,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 10:46:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2025-01-09 10:46:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2025-01-09 10:46:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 70 states have (on average 1.3714285714285714) internal successors, (96), 70 states have internal predecessors, (96), 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 10:46:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 180 transitions. [2025-01-09 10:46:59,328 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 180 transitions. Word has length 261 [2025-01-09 10:46:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:46:59,328 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 180 transitions. [2025-01-09 10:46:59,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (42), 1 states have call predecessors, (42), 2 states have call successors, (42) [2025-01-09 10:46:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 180 transitions. [2025-01-09 10:46:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2025-01-09 10:46:59,332 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:46:59,332 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 10:46:59,344 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 10:46:59,533 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 10:46:59,533 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:46:59,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:46:59,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1845943846, now seen corresponding path program 1 times [2025-01-09 10:46:59,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:46:59,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822348296] [2025-01-09 10:46:59,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:46:59,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:46:59,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 261 statements into 1 equivalence classes. [2025-01-09 10:46:59,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 261 of 261 statements. [2025-01-09 10:46:59,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:46:59,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:47:00,299 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 10:47:00,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:47:00,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822348296] [2025-01-09 10:47:00,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822348296] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:47:00,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 10:47:00,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 10:47:00,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251644754] [2025-01-09 10:47:00,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:47:00,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 10:47:00,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:47:00,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 10:47:00,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 10:47:00,304 INFO L87 Difference]: Start difference. First operand 114 states and 180 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 10:47:00,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:47:00,335 INFO L93 Difference]: Finished difference Result 226 states and 359 transitions. [2025-01-09 10:47:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 10:47:00,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 10:47:00,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:47:00,339 INFO L225 Difference]: With dead ends: 226 [2025-01-09 10:47:00,339 INFO L226 Difference]: Without dead ends: 115 [2025-01-09 10:47:00,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 10:47:00,342 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 10:47:00,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 10:47:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-01-09 10:47:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2025-01-09 10:47:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 71 states have (on average 1.3661971830985915) internal successors, (97), 71 states have internal predecessors, (97), 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 10:47:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 181 transitions. [2025-01-09 10:47:00,358 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 181 transitions. Word has length 261 [2025-01-09 10:47:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:47:00,362 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 181 transitions. [2025-01-09 10:47:00,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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 10:47:00,362 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 181 transitions. [2025-01-09 10:47:00,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-01-09 10:47:00,365 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:47:00,365 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 10:47:00,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 10:47:00,365 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:47:00,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:47:00,367 INFO L85 PathProgramCache]: Analyzing trace with hash -982782862, now seen corresponding path program 1 times [2025-01-09 10:47:00,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:47:00,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034427387] [2025-01-09 10:47:00,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:47:00,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:47:00,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-01-09 10:47:00,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-01-09 10:47:00,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:47:00,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:47:01,412 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 10:47:01,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:47:01,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034427387] [2025-01-09 10:47:01,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034427387] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:47:01,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 10:47:01,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 10:47:01,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40793255] [2025-01-09 10:47:01,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:47:01,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 10:47:01,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:47:01,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 10:47:01,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 10:47:01,414 INFO L87 Difference]: Start difference. First operand 115 states and 181 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 10:47:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:47:01,677 INFO L93 Difference]: Finished difference Result 362 states and 576 transitions. [2025-01-09 10:47:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 10:47:01,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 262 [2025-01-09 10:47:01,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:47:01,683 INFO L225 Difference]: With dead ends: 362 [2025-01-09 10:47:01,683 INFO L226 Difference]: Without dead ends: 250 [2025-01-09 10:47:01,684 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 10:47:01,684 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 153 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 10:47:01,685 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 440 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 10:47:01,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2025-01-09 10:47:01,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 225. [2025-01-09 10:47:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 138 states have (on average 1.3695652173913044) internal successors, (189), 138 states have internal predecessors, (189), 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 10:47:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 357 transitions. [2025-01-09 10:47:01,731 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 357 transitions. Word has length 262 [2025-01-09 10:47:01,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:47:01,731 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 357 transitions. [2025-01-09 10:47:01,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 10:47:01,733 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 357 transitions. [2025-01-09 10:47:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-01-09 10:47:01,735 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:47:01,736 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 10:47:01,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 10:47:01,736 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:47:01,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:47:01,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1800431312, now seen corresponding path program 1 times [2025-01-09 10:47:01,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:47:01,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129283581] [2025-01-09 10:47:01,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:47:01,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:47:01,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-01-09 10:47:01,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-01-09 10:47:01,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:47:01,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 10:47:02,934 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 10:47:02,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 10:47:02,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129283581] [2025-01-09 10:47:02,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129283581] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 10:47:02,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 10:47:02,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 10:47:02,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662966514] [2025-01-09 10:47:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 10:47:02,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 10:47:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 10:47:02,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 10:47:02,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-01-09 10:47:02,936 INFO L87 Difference]: Start difference. First operand 225 states and 357 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 10:47:03,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 10:47:03,946 INFO L93 Difference]: Finished difference Result 698 states and 1102 transitions. [2025-01-09 10:47:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 10:47:03,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 262 [2025-01-09 10:47:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 10:47:03,952 INFO L225 Difference]: With dead ends: 698 [2025-01-09 10:47:03,952 INFO L226 Difference]: Without dead ends: 476 [2025-01-09 10:47:03,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-01-09 10:47:03,954 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 611 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-09 10:47:03,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 686 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-09 10:47:03,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2025-01-09 10:47:04,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 394. [2025-01-09 10:47:04,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 243 states have (on average 1.3703703703703705) internal successors, (333), 244 states have internal predecessors, (333), 146 states have call successors, (146), 4 states have call predecessors, (146), 4 states have return successors, (146), 145 states have call predecessors, (146), 146 states have call successors, (146) [2025-01-09 10:47:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 625 transitions. [2025-01-09 10:47:04,031 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 625 transitions. Word has length 262 [2025-01-09 10:47:04,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 10:47:04,032 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 625 transitions. [2025-01-09 10:47:04,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 10:47:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 625 transitions. [2025-01-09 10:47:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-01-09 10:47:04,037 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 10:47:04,037 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 10:47:04,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 10:47:04,038 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 10:47:04,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 10:47:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1214672306, now seen corresponding path program 1 times [2025-01-09 10:47:04,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 10:47:04,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050632485] [2025-01-09 10:47:04,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 10:47:04,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 10:47:04,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 262 statements into 1 equivalence classes. [2025-01-09 10:47:04,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 262 of 262 statements. [2025-01-09 10:47:04,166 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 10:47:04,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat