./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-36.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-36.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 b49304aee6e5a859a9d412000cdb0023180f077055e31e15f7512b1a92b0e9c3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 11:27:51,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 11:27:51,676 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 11:27:51,681 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 11:27:51,681 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 11:27:51,703 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 11:27:51,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 11:27:51,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 11:27:51,704 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 11:27:51,704 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 11:27:51,705 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 11:27:51,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 11:27:51,705 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 11:27:51,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 11:27:51,705 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 11:27:51,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 11:27:51,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 11:27:51,706 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 11:27:51,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 11:27:51,706 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 11:27:51,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 11:27:51,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 11:27:51,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 11:27:51,707 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 11:27:51,707 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 11:27:51,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 11:27:51,707 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 11:27:51,707 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 11:27:51,707 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 11:27:51,707 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:27:51,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:27:51,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:27:51,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:27:51,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 11:27:51,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 11:27:51,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 11:27:51,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 11:27:51,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 11:27:51,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 11:27:51,709 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 -> b49304aee6e5a859a9d412000cdb0023180f077055e31e15f7512b1a92b0e9c3 [2025-01-09 11:27:51,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 11:27:51,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 11:27:51,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 11:27:51,936 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 11:27:51,937 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 11:27:51,938 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-36.i [2025-01-09 11:27:53,053 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8659044d0/ac129ab51745467b8fa5792d5a01b32a/FLAG8b92aaeb0 [2025-01-09 11:27:53,269 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 11:27:53,270 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-36.i [2025-01-09 11:27:53,276 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8659044d0/ac129ab51745467b8fa5792d5a01b32a/FLAG8b92aaeb0 [2025-01-09 11:27:53,616 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/8659044d0/ac129ab51745467b8fa5792d5a01b32a [2025-01-09 11:27:53,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 11:27:53,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 11:27:53,620 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 11:27:53,620 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 11:27:53,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 11:27:53,624 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e42eceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53, skipping insertion in model container [2025-01-09 11:27:53,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,650 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 11:27:53,741 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-36.i[919,932] [2025-01-09 11:27:53,784 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:27:53,791 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 11:27:53,797 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-co_file-36.i[919,932] [2025-01-09 11:27:53,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:27:53,840 INFO L204 MainTranslator]: Completed translation [2025-01-09 11:27:53,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53 WrapperNode [2025-01-09 11:27:53,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 11:27:53,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 11:27:53,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 11:27:53,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 11:27:53,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,892 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 272 [2025-01-09 11:27:53,892 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 11:27:53,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 11:27:53,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 11:27:53,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 11:27:53,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,906 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,913 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,924 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 11:27:53,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,931 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,935 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 11:27:53,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 11:27:53,942 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 11:27:53,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 11:27:53,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (1/1) ... [2025-01-09 11:27:53,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:27:53,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:27:53,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 11:27:53,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 11:27:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 11:27:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 11:27:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 11:27:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 11:27:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 11:27:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 11:27:54,066 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 11:27:54,068 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 11:27:54,408 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-01-09 11:27:54,409 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 11:27:54,417 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 11:27:54,417 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 11:27:54,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:27:54 BoogieIcfgContainer [2025-01-09 11:27:54,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 11:27:54,419 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 11:27:54,419 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 11:27:54,423 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 11:27:54,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:27:53" (1/3) ... [2025-01-09 11:27:54,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da23095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:27:54, skipping insertion in model container [2025-01-09 11:27:54,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:27:53" (2/3) ... [2025-01-09 11:27:54,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da23095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:27:54, skipping insertion in model container [2025-01-09 11:27:54,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:27:54" (3/3) ... [2025-01-09 11:27:54,425 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-36.i [2025-01-09 11:27:54,435 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 11:27:54,437 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-pr-co_file-36.i that has 2 procedures, 121 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 11:27:54,476 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 11:27:54,483 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;@411d5db3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 11:27:54,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 11:27:54,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 75 states have internal predecessors, (102), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 11:27:54,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2025-01-09 11:27:54,499 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:27:54,500 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:27:54,500 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:27:54,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:27:54,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1074468396, now seen corresponding path program 1 times [2025-01-09 11:27:54,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:27:54,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452246951] [2025-01-09 11:27:54,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:27:54,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:27:54,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-01-09 11:27:54,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-01-09 11:27:54,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:27:54,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:27:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-01-09 11:27:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:27:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452246951] [2025-01-09 11:27:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452246951] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:27:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28008119] [2025-01-09 11:27:54,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:27:54,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:27:54,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:27:54,828 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 11:27:54,834 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 11:27:54,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-01-09 11:27:55,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-01-09 11:27:55,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:27:55,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:27:55,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 11:27:55,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:27:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2025-01-09 11:27:55,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 11:27:55,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28008119] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:27:55,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 11:27:55,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 11:27:55,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788331191] [2025-01-09 11:27:55,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:27:55,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 11:27:55,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:27:55,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 11:27:55,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 11:27:55,137 INFO L87 Difference]: Start difference. First operand has 121 states, 74 states have (on average 1.3783783783783783) internal successors, (102), 75 states have internal predecessors, (102), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-01-09 11:27:55,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:27:55,170 INFO L93 Difference]: Finished difference Result 236 states and 419 transitions. [2025-01-09 11:27:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 11:27:55,171 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) Word has length 277 [2025-01-09 11:27:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:27:55,176 INFO L225 Difference]: With dead ends: 236 [2025-01-09 11:27:55,176 INFO L226 Difference]: Without dead ends: 118 [2025-01-09 11:27:55,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 278 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 11:27:55,182 INFO L435 NwaCegarLoop]: 184 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, 184 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 11:27:55,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 11:27:55,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-01-09 11:27:55,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2025-01-09 11:27:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 11:27:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 184 transitions. [2025-01-09 11:27:55,227 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 184 transitions. Word has length 277 [2025-01-09 11:27:55,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:27:55,228 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 184 transitions. [2025-01-09 11:27:55,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 2 states have call successors, (44) [2025-01-09 11:27:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 184 transitions. [2025-01-09 11:27:55,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2025-01-09 11:27:55,231 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:27:55,234 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:27:55,244 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 11:27:55,434 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 11:27:55,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:27:55,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:27:55,438 INFO L85 PathProgramCache]: Analyzing trace with hash 821357220, now seen corresponding path program 1 times [2025-01-09 11:27:55,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:27:55,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538968748] [2025-01-09 11:27:55,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:27:55,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:27:55,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 277 statements into 1 equivalence classes. [2025-01-09 11:27:55,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 277 of 277 statements. [2025-01-09 11:27:55,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:27:55,510 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:27:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2025-01-09 11:27:55,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:27:55,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538968748] [2025-01-09 11:27:55,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538968748] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:27:55,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:27:55,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 11:27:55,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542443856] [2025-01-09 11:27:55,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:27:55,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 11:27:55,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:27:55,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 11:27:55,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 11:27:55,922 INFO L87 Difference]: Start difference. First operand 118 states and 184 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 11:27:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:27:55,963 INFO L93 Difference]: Finished difference Result 233 states and 365 transitions. [2025-01-09 11:27:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 11:27:55,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 277 [2025-01-09 11:27:55,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:27:55,967 INFO L225 Difference]: With dead ends: 233 [2025-01-09 11:27:55,967 INFO L226 Difference]: Without dead ends: 118 [2025-01-09 11:27:55,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 11:27:55,969 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 93 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 11:27:55,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 174 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 11:27:55,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2025-01-09 11:27:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2025-01-09 11:27:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 72 states have internal predecessors, (94), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 11:27:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 182 transitions. [2025-01-09 11:27:55,993 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 182 transitions. Word has length 277 [2025-01-09 11:27:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:27:55,996 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 182 transitions. [2025-01-09 11:27:55,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2025-01-09 11:27:55,996 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 182 transitions. [2025-01-09 11:27:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2025-01-09 11:27:56,001 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:27:56,001 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:27:56,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 11:27:56,002 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:27:56,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:27:56,002 INFO L85 PathProgramCache]: Analyzing trace with hash 981323392, now seen corresponding path program 1 times [2025-01-09 11:27:56,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:27:56,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453137161] [2025-01-09 11:27:56,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:27:56,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:27:56,027 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 280 statements into 1 equivalence classes. [2025-01-09 11:27:56,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 280 of 280 statements. [2025-01-09 11:27:56,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:27:56,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:27:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 234 proven. 18 refuted. 0 times theorem prover too weak. 3532 trivial. 0 not checked. [2025-01-09 11:27:56,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:27:56,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453137161] [2025-01-09 11:27:56,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453137161] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:27:56,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801950897] [2025-01-09 11:27:56,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:27:56,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:27:56,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:27:56,779 INFO L229 MonitoredProcess]: Starting monitored process 3 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 11:27:56,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 11:27:56,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 280 statements into 1 equivalence classes. [2025-01-09 11:27:56,962 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 280 of 280 statements. [2025-01-09 11:27:56,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:27:56,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:27:56,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 11:27:56,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:27:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 759 proven. 18 refuted. 0 times theorem prover too weak. 3007 trivial. 0 not checked. [2025-01-09 11:27:57,500 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:27:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 351 proven. 27 refuted. 0 times theorem prover too weak. 3406 trivial. 0 not checked. [2025-01-09 11:27:58,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801950897] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 11:27:58,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 11:27:58,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 12] total 22 [2025-01-09 11:27:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594261413] [2025-01-09 11:27:58,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 11:27:58,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 11:27:58,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:27:58,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 11:27:58,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2025-01-09 11:27:58,130 INFO L87 Difference]: Start difference. First operand 118 states and 182 transitions. Second operand has 22 states, 21 states have (on average 6.095238095238095) internal successors, (128), 21 states have internal predecessors, (128), 6 states have call successors, (51), 4 states have call predecessors, (51), 8 states have return successors, (53), 6 states have call predecessors, (53), 6 states have call successors, (53) [2025-01-09 11:27:58,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:27:58,686 INFO L93 Difference]: Finished difference Result 250 states and 376 transitions. [2025-01-09 11:27:58,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-09 11:27:58,686 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.095238095238095) internal successors, (128), 21 states have internal predecessors, (128), 6 states have call successors, (51), 4 states have call predecessors, (51), 8 states have return successors, (53), 6 states have call predecessors, (53), 6 states have call successors, (53) Word has length 280 [2025-01-09 11:27:58,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:27:58,688 INFO L225 Difference]: With dead ends: 250 [2025-01-09 11:27:58,688 INFO L226 Difference]: Without dead ends: 135 [2025-01-09 11:27:58,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 546 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=270, Invalid=600, Unknown=0, NotChecked=0, Total=870 [2025-01-09 11:27:58,690 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 249 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 11:27:58,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 619 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 11:27:58,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-01-09 11:27:58,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131. [2025-01-09 11:27:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 82 states have internal predecessors, (104), 44 states have call successors, (44), 4 states have call predecessors, (44), 4 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2025-01-09 11:27:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 192 transitions. [2025-01-09 11:27:58,706 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 192 transitions. Word has length 280 [2025-01-09 11:27:58,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:27:58,706 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 192 transitions. [2025-01-09 11:27:58,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.095238095238095) internal successors, (128), 21 states have internal predecessors, (128), 6 states have call successors, (51), 4 states have call predecessors, (51), 8 states have return successors, (53), 6 states have call predecessors, (53), 6 states have call successors, (53) [2025-01-09 11:27:58,707 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 192 transitions. [2025-01-09 11:27:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2025-01-09 11:27:58,709 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:27:58,709 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:27:58,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 11:27:58,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:27:58,913 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:27:58,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:27:58,914 INFO L85 PathProgramCache]: Analyzing trace with hash -402492388, now seen corresponding path program 1 times [2025-01-09 11:27:58,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:27:58,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817139450] [2025-01-09 11:27:58,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:27:58,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:27:58,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 281 statements into 1 equivalence classes. [2025-01-09 11:27:59,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 281 of 281 statements. [2025-01-09 11:27:59,037 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:27:59,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 11:27:59,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295931381] [2025-01-09 11:27:59,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:27:59,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:27:59,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:27:59,043 INFO L229 MonitoredProcess]: Starting monitored process 4 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 11:27:59,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 11:27:59,120 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 281 statements into 1 equivalence classes. [2025-01-09 11:27:59,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 281 of 281 statements. [2025-01-09 11:27:59,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:27:59,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:27:59,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 11:27:59,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:27:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 608 proven. 12 refuted. 0 times theorem prover too weak. 3164 trivial. 0 not checked. [2025-01-09 11:27:59,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:28:00,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:28:00,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817139450] [2025-01-09 11:28:00,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 11:28:00,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295931381] [2025-01-09 11:28:00,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295931381] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:28:00,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 11:28:00,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2025-01-09 11:28:00,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519868294] [2025-01-09 11:28:00,313 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 11:28:00,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 11:28:00,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:28:00,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 11:28:00,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2025-01-09 11:28:00,314 INFO L87 Difference]: Start difference. First operand 131 states and 192 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2025-01-09 11:28:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:28:01,312 INFO L93 Difference]: Finished difference Result 635 states and 934 transitions. [2025-01-09 11:28:01,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 11:28:01,313 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 281 [2025-01-09 11:28:01,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:28:01,320 INFO L225 Difference]: With dead ends: 635 [2025-01-09 11:28:01,320 INFO L226 Difference]: Without dead ends: 507 [2025-01-09 11:28:01,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2025-01-09 11:28:01,323 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 696 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 11:28:01,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 806 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 11:28:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2025-01-09 11:28:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 382. [2025-01-09 11:28:01,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 235 states have (on average 1.2723404255319148) internal successors, (299), 237 states have internal predecessors, (299), 136 states have call successors, (136), 10 states have call predecessors, (136), 10 states have return successors, (136), 134 states have call predecessors, (136), 136 states have call successors, (136) [2025-01-09 11:28:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 571 transitions. [2025-01-09 11:28:01,405 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 571 transitions. Word has length 281 [2025-01-09 11:28:01,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:28:01,405 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 571 transitions. [2025-01-09 11:28:01,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (44), 3 states have call predecessors, (44), 4 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2025-01-09 11:28:01,406 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 571 transitions. [2025-01-09 11:28:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2025-01-09 11:28:01,408 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:28:01,408 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:28:01,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 11:28:01,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:28:01,610 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:28:01,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:28:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1335155705, now seen corresponding path program 1 times [2025-01-09 11:28:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:28:01,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723508167] [2025-01-09 11:28:01,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:28:01,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:28:01,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 281 statements into 1 equivalence classes. [2025-01-09 11:28:01,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 281 of 281 statements. [2025-01-09 11:28:01,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:28:01,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 11:28:01,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595576646] [2025-01-09 11:28:01,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:28:01,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:28:01,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:28:01,765 INFO L229 MonitoredProcess]: Starting monitored process 5 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 11:28:01,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 11:28:01,851 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 281 statements into 1 equivalence classes. [2025-01-09 11:28:01,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 281 of 281 statements. [2025-01-09 11:28:01,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:28:01,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:28:01,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 11:28:01,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:28:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 745 proven. 12 refuted. 0 times theorem prover too weak. 3027 trivial. 0 not checked. [2025-01-09 11:28:02,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:28:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3784 backedges. 117 proven. 12 refuted. 0 times theorem prover too weak. 3655 trivial. 0 not checked. [2025-01-09 11:28:03,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:28:03,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723508167] [2025-01-09 11:28:03,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 11:28:03,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595576646] [2025-01-09 11:28:03,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595576646] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 11:28:03,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 11:28:03,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2025-01-09 11:28:03,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451580852] [2025-01-09 11:28:03,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 11:28:03,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 11:28:03,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:28:03,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 11:28:03,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2025-01-09 11:28:03,800 INFO L87 Difference]: Start difference. First operand 382 states and 571 transitions. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 4 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (88), 4 states have call predecessors, (88), 4 states have call successors, (88) [2025-01-09 11:28:06,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:28:06,052 INFO L93 Difference]: Finished difference Result 1497 states and 2238 transitions. [2025-01-09 11:28:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 11:28:06,053 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 4 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (88), 4 states have call predecessors, (88), 4 states have call successors, (88) Word has length 281 [2025-01-09 11:28:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:28:06,062 INFO L225 Difference]: With dead ends: 1497 [2025-01-09 11:28:06,062 INFO L226 Difference]: Without dead ends: 1102 [2025-01-09 11:28:06,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2025-01-09 11:28:06,065 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 659 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-01-09 11:28:06,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1054 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-01-09 11:28:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2025-01-09 11:28:06,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 913. [2025-01-09 11:28:06,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 567 states have (on average 1.2839506172839505) internal successors, (728), 574 states have internal predecessors, (728), 326 states have call successors, (326), 19 states have call predecessors, (326), 19 states have return successors, (326), 319 states have call predecessors, (326), 326 states have call successors, (326) [2025-01-09 11:28:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1380 transitions. [2025-01-09 11:28:06,182 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1380 transitions. Word has length 281 [2025-01-09 11:28:06,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:28:06,183 INFO L471 AbstractCegarLoop]: Abstraction has 913 states and 1380 transitions. [2025-01-09 11:28:06,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 4 states have call successors, (88), 3 states have call predecessors, (88), 5 states have return successors, (88), 4 states have call predecessors, (88), 4 states have call successors, (88) [2025-01-09 11:28:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1380 transitions. [2025-01-09 11:28:06,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2025-01-09 11:28:06,186 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:28:06,186 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:28:06,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 11:28:06,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:28:06,387 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:28:06,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:28:06,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1757857531, now seen corresponding path program 1 times [2025-01-09 11:28:06,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:28:06,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628632340] [2025-01-09 11:28:06,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:28:06,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:28:06,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 281 statements into 1 equivalence classes. [2025-01-09 11:28:06,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 281 of 281 statements. [2025-01-09 11:28:06,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:28:06,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 11:28:06,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174534525] [2025-01-09 11:28:06,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:28:06,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:28:06,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:28:06,467 INFO L229 MonitoredProcess]: Starting monitored process 6 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 11:28:06,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 11:28:06,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 281 statements into 1 equivalence classes.