./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_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_fillercodesize_ps-cn-25_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 4d936c2bc359502c9cc80babbbddc5f5ec41bb334054fc0df7f5bb21f4158f99 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 09:49:42,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 09:49:42,337 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 09:49:42,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 09:49:42,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 09:49:42,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 09:49:42,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 09:49:42,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 09:49:42,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 09:49:42,374 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 09:49:42,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 09:49:42,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 09:49:42,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 09:49:42,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 09:49:42,375 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 09:49:42,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 09:49:42,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 09:49:42,375 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 09:49:42,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 09:49:42,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 09:49:42,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 09:49:42,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 09:49:42,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 09:49:42,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 09:49:42,376 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 09:49:42,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 09:49:42,376 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 09:49:42,376 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 09:49:42,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 09:49:42,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:49:42,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:49:42,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:49:42,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:49:42,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 09:49:42,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 09:49:42,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 09:49:42,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 09:49:42,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:49:42,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 09:49:42,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 09:49:42,378 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 09:49:42,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 09:49:42,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 09:49:42,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 09:49:42,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 09:49:42,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 09:49:42,379 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 09:49:42,379 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 09:49:42,379 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 -> 4d936c2bc359502c9cc80babbbddc5f5ec41bb334054fc0df7f5bb21f4158f99 [2025-01-09 09:49:42,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 09:49:42,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 09:49:42,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 09:49:42,685 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 09:49:42,685 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 09:49:42,686 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-10.i [2025-01-09 09:49:44,003 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aaeeca050/cc6c51ea270e4a8fb0f83cfeaf61688c/FLAGc57c40a8f [2025-01-09 09:49:44,293 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 09:49:44,294 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-10.i [2025-01-09 09:49:44,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aaeeca050/cc6c51ea270e4a8fb0f83cfeaf61688c/FLAGc57c40a8f [2025-01-09 09:49:44,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/aaeeca050/cc6c51ea270e4a8fb0f83cfeaf61688c [2025-01-09 09:49:44,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 09:49:44,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 09:49:44,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 09:49:44,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 09:49:44,359 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 09:49:44,360 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,360 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47730668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44, skipping insertion in model container [2025-01-09 09:49:44,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,383 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 09:49:44,521 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-10.i[915,928] [2025-01-09 09:49:44,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:49:44,622 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 09:49:44,632 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-10.i[915,928] [2025-01-09 09:49:44,684 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 09:49:44,708 INFO L204 MainTranslator]: Completed translation [2025-01-09 09:49:44,708 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44 WrapperNode [2025-01-09 09:49:44,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 09:49:44,710 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 09:49:44,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 09:49:44,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 09:49:44,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,727 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,783 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2025-01-09 09:49:44,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 09:49:44,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 09:49:44,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 09:49:44,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 09:49:44,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,805 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,839 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 09:49:44,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,840 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,854 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,873 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,882 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 09:49:44,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 09:49:44,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 09:49:44,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 09:49:44,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (1/1) ... [2025-01-09 09:49:44,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 09:49:44,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:49:44,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 09:49:44,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 09:49:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 09:49:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 09:49:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 09:49:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 09:49:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 09:49:44,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 09:49:45,030 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 09:49:45,032 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 09:49:45,530 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2025-01-09 09:49:45,530 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 09:49:45,540 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 09:49:45,540 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 09:49:45,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:49:45 BoogieIcfgContainer [2025-01-09 09:49:45,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 09:49:45,543 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 09:49:45,543 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 09:49:45,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 09:49:45,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:49:44" (1/3) ... [2025-01-09 09:49:45,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721ada38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:49:45, skipping insertion in model container [2025-01-09 09:49:45,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:49:44" (2/3) ... [2025-01-09 09:49:45,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721ada38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:49:45, skipping insertion in model container [2025-01-09 09:49:45,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:49:45" (3/3) ... [2025-01-09 09:49:45,551 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-10.i [2025-01-09 09:49:45,563 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 09:49:45,565 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-10.i that has 2 procedures, 104 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 09:49:45,629 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 09:49:45,641 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;@3a24e990, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 09:49:45,642 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 09:49:45,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 70 states have internal predecessors, (93), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 09:49:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2025-01-09 09:49:45,662 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:49:45,662 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:49:45,663 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:49:45,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:49:45,669 INFO L85 PathProgramCache]: Analyzing trace with hash 623338067, now seen corresponding path program 1 times [2025-01-09 09:49:45,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:49:45,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262283217] [2025-01-09 09:49:45,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:49:45,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:49:45,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-01-09 09:49:45,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-01-09 09:49:45,840 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:49:45,840 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:49:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2025-01-09 09:49:46,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:49:46,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262283217] [2025-01-09 09:49:46,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262283217] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 09:49:46,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779668] [2025-01-09 09:49:46,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:49:46,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 09:49:46,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 09:49:46,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 09:49:46,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 09:49:46,198 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-01-09 09:49:46,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-01-09 09:49:46,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:49:46,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:49:46,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 09:49:46,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 09:49:46,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2025-01-09 09:49:46,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 09:49:46,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779668] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:49:46,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 09:49:46,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 09:49:46,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034871986] [2025-01-09 09:49:46,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:49:46,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 09:49:46,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:49:46,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 09:49:46,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 09:49:46,399 INFO L87 Difference]: Start difference. First operand has 104 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 70 states have internal predecessors, (93), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2025-01-09 09:49:46,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:49:46,431 INFO L93 Difference]: Finished difference Result 202 states and 341 transitions. [2025-01-09 09:49:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 09:49:46,433 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) Word has length 208 [2025-01-09 09:49:46,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:49:46,441 INFO L225 Difference]: With dead ends: 202 [2025-01-09 09:49:46,442 INFO L226 Difference]: Without dead ends: 101 [2025-01-09 09:49:46,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 09:49:46,449 INFO L435 NwaCegarLoop]: 152 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, 152 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 09:49:46,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 09:49:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-01-09 09:49:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2025-01-09 09:49:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 67 states have internal predecessors, (88), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-01-09 09:49:46,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 152 transitions. [2025-01-09 09:49:46,506 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 152 transitions. Word has length 208 [2025-01-09 09:49:46,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:49:46,506 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 152 transitions. [2025-01-09 09:49:46,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2025-01-09 09:49:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 152 transitions. [2025-01-09 09:49:46,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2025-01-09 09:49:46,512 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:49:46,512 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:49:46,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 09:49:46,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 09:49:46,714 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:49:46,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:49:46,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1131867603, now seen corresponding path program 1 times [2025-01-09 09:49:46,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:49:46,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876795564] [2025-01-09 09:49:46,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:49:46,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:49:46,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 208 statements into 1 equivalence classes. [2025-01-09 09:49:46,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 208 of 208 statements. [2025-01-09 09:49:46,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:49:46,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:49:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2025-01-09 09:49:47,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:49:47,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876795564] [2025-01-09 09:49:47,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876795564] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:49:47,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:49:47,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 09:49:47,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534731308] [2025-01-09 09:49:47,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:49:47,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 09:49:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:49:47,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 09:49:47,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 09:49:47,386 INFO L87 Difference]: Start difference. First operand 101 states and 152 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-01-09 09:49:47,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:49:47,642 INFO L93 Difference]: Finished difference Result 298 states and 451 transitions. [2025-01-09 09:49:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 09:49:47,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 208 [2025-01-09 09:49:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:49:47,648 INFO L225 Difference]: With dead ends: 298 [2025-01-09 09:49:47,648 INFO L226 Difference]: Without dead ends: 200 [2025-01-09 09:49:47,650 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-01-09 09:49:47,652 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 98 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 09:49:47,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 579 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 09:49:47,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-01-09 09:49:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 166. [2025-01-09 09:49:47,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 99 states have (on average 1.2525252525252526) internal successors, (124), 99 states have internal predecessors, (124), 64 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2025-01-09 09:49:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 252 transitions. [2025-01-09 09:49:47,696 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 252 transitions. Word has length 208 [2025-01-09 09:49:47,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:49:47,697 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 252 transitions. [2025-01-09 09:49:47,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-01-09 09:49:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 252 transitions. [2025-01-09 09:49:47,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2025-01-09 09:49:47,701 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:49:47,701 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:49:47,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 09:49:47,701 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:49:47,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:49:47,702 INFO L85 PathProgramCache]: Analyzing trace with hash -521463522, now seen corresponding path program 1 times [2025-01-09 09:49:47,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:49:47,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009819823] [2025-01-09 09:49:47,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:49:47,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:49:47,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 209 statements into 1 equivalence classes. [2025-01-09 09:49:48,107 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 209 of 209 statements. [2025-01-09 09:49:48,107 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:49:48,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:50:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2025-01-09 09:50:07,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:50:07,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009819823] [2025-01-09 09:50:07,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009819823] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:50:07,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:50:07,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-01-09 09:50:07,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162483591] [2025-01-09 09:50:07,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:50:07,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 09:50:07,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:50:07,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 09:50:07,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2025-01-09 09:50:07,629 INFO L87 Difference]: Start difference. First operand 166 states and 252 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-01-09 09:50:09,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:50:09,653 INFO L93 Difference]: Finished difference Result 385 states and 567 transitions. [2025-01-09 09:50:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 09:50:09,654 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 209 [2025-01-09 09:50:09,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:50:09,659 INFO L225 Difference]: With dead ends: 385 [2025-01-09 09:50:09,661 INFO L226 Difference]: Without dead ends: 287 [2025-01-09 09:50:09,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2025-01-09 09:50:09,663 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 491 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-09 09:50:09,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 836 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-09 09:50:09,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2025-01-09 09:50:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 188. [2025-01-09 09:50:09,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 121 states have (on average 1.2975206611570247) internal successors, (157), 121 states have internal predecessors, (157), 64 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2025-01-09 09:50:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 285 transitions. [2025-01-09 09:50:09,717 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 285 transitions. Word has length 209 [2025-01-09 09:50:09,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:50:09,718 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 285 transitions. [2025-01-09 09:50:09,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-01-09 09:50:09,718 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 285 transitions. [2025-01-09 09:50:09,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2025-01-09 09:50:09,720 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:50:09,720 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:50:09,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 09:50:09,725 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:50:09,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:50:09,725 INFO L85 PathProgramCache]: Analyzing trace with hash 158594848, now seen corresponding path program 1 times [2025-01-09 09:50:09,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:50:09,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93811912] [2025-01-09 09:50:09,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:50:09,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:50:09,760 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 209 statements into 1 equivalence classes. [2025-01-09 09:50:09,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 209 of 209 statements. [2025-01-09 09:50:09,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:50:09,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 09:51:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2025-01-09 09:51:06,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 09:51:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93811912] [2025-01-09 09:51:06,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93811912] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 09:51:06,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 09:51:06,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-01-09 09:51:06,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390327150] [2025-01-09 09:51:06,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 09:51:06,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 09:51:06,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 09:51:06,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 09:51:06,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2025-01-09 09:51:06,782 INFO L87 Difference]: Start difference. First operand 188 states and 285 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-01-09 09:51:07,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 09:51:07,995 INFO L93 Difference]: Finished difference Result 508 states and 755 transitions. [2025-01-09 09:51:07,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 09:51:07,996 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 209 [2025-01-09 09:51:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 09:51:07,999 INFO L225 Difference]: With dead ends: 508 [2025-01-09 09:51:08,000 INFO L226 Difference]: Without dead ends: 403 [2025-01-09 09:51:08,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2025-01-09 09:51:08,001 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 420 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 09:51:08,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 777 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 09:51:08,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2025-01-09 09:51:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 311. [2025-01-09 09:51:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 211 states have (on average 1.3080568720379147) internal successors, (276), 211 states have internal predecessors, (276), 96 states have call successors, (96), 3 states have call predecessors, (96), 3 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2025-01-09 09:51:08,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 468 transitions. [2025-01-09 09:51:08,064 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 468 transitions. Word has length 209 [2025-01-09 09:51:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 09:51:08,065 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 468 transitions. [2025-01-09 09:51:08,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-01-09 09:51:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 468 transitions. [2025-01-09 09:51:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2025-01-09 09:51:08,070 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 09:51:08,070 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 09:51:08,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 09:51:08,071 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 09:51:08,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 09:51:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1669588962, now seen corresponding path program 1 times [2025-01-09 09:51:08,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 09:51:08,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522257446] [2025-01-09 09:51:08,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 09:51:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 09:51:08,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 209 statements into 1 equivalence classes. [2025-01-09 09:51:08,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 209 of 209 statements. [2025-01-09 09:51:08,234 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 09:51:08,234 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat