./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound1.c --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/nla-digbench-scaling/hard-u_valuebound1.c -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 2205701c87619eed0a8a76ebf684289d4e97e42556aa5e531d0e97f394ad4619 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:28:42,795 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:28:42,845 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:28:42,848 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:28:42,850 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:28:42,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:28:42,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:28:42,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:28:42,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:28:42,868 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:28:42,869 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:28:42,869 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:28:42,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:28:42,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:28:42,869 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:28:42,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:28:42,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:28:42,869 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:28:42,870 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:28:42,870 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:28:42,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:28:42,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:28:42,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:28:42,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:28:42,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:28:42,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:28:42,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:28:42,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:28:42,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:28:42,871 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:28:42,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:28:42,872 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:28:42,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:28:42,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:28:42,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:28:42,872 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:28:42,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:28:42,872 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:28:42,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:28:42,872 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 -> 2205701c87619eed0a8a76ebf684289d4e97e42556aa5e531d0e97f394ad4619 [2025-01-09 03:28:43,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:28:43,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:28:43,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:28:43,126 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:28:43,126 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:28:43,127 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound1.c [2025-01-09 03:28:44,203 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7b47f01f6/3c6f29eed02c4da597863e500397f5aa/FLAG5f60cee87 [2025-01-09 03:28:44,415 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:28:44,415 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-u_valuebound1.c [2025-01-09 03:28:44,422 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7b47f01f6/3c6f29eed02c4da597863e500397f5aa/FLAG5f60cee87 [2025-01-09 03:28:44,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7b47f01f6/3c6f29eed02c4da597863e500397f5aa [2025-01-09 03:28:44,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:28:44,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:28:44,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:28:44,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:28:44,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:28:44,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c29319 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44, skipping insertion in model container [2025-01-09 03:28:44,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,790 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:28:44,879 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/nla-digbench-scaling/hard-u_valuebound1.c[537,550] [2025-01-09 03:28:44,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:28:44,902 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:28:44,909 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/nla-digbench-scaling/hard-u_valuebound1.c[537,550] [2025-01-09 03:28:44,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:28:44,929 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:28:44,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44 WrapperNode [2025-01-09 03:28:44,931 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:28:44,932 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:28:44,932 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:28:44,932 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:28:44,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,951 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2025-01-09 03:28:44,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:28:44,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:28:44,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:28:44,953 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:28:44,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,967 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 03:28:44,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,972 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,972 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,976 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:28:44,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:28:44,981 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:28:44,981 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:28:44,982 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (1/1) ... [2025-01-09 03:28:44,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:28:44,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:28:45,007 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 03:28:45,010 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 03:28:45,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:28:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 03:28:45,028 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 03:28:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:28:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:28:45,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:28:45,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 03:28:45,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 03:28:45,066 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:28:45,067 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:28:45,171 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-01-09 03:28:45,172 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:28:45,178 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:28:45,179 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-09 03:28:45,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:28:45 BoogieIcfgContainer [2025-01-09 03:28:45,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:28:45,181 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:28:45,181 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:28:45,184 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:28:45,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:28:44" (1/3) ... [2025-01-09 03:28:45,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721d745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:28:45, skipping insertion in model container [2025-01-09 03:28:45,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:28:44" (2/3) ... [2025-01-09 03:28:45,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@721d745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:28:45, skipping insertion in model container [2025-01-09 03:28:45,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:28:45" (3/3) ... [2025-01-09 03:28:45,187 INFO L128 eAbstractionObserver]: Analyzing ICFG hard-u_valuebound1.c [2025-01-09 03:28:45,197 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:28:45,199 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hard-u_valuebound1.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 03:28:45,234 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:28:45,244 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;@6d18c254, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:28:45,245 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:28:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 18 states have internal predecessors, (25), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-01-09 03:28:45,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 03:28:45,252 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:28:45,253 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:28:45,253 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:28:45,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:28:45,257 INFO L85 PathProgramCache]: Analyzing trace with hash -326149090, now seen corresponding path program 1 times [2025-01-09 03:28:45,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:28:45,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555935609] [2025-01-09 03:28:45,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:45,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:28:45,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 03:28:45,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:28:45,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:45,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:28:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:28:45,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:28:45,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555935609] [2025-01-09 03:28:45,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555935609] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:28:45,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831551944] [2025-01-09 03:28:45,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:45,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:28:45,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:28:45,367 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 03:28:45,369 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 03:28:45,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 03:28:45,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:28:45,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:45,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:28:45,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 03:28:45,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:28:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-01-09 03:28:45,447 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:28:45,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831551944] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:28:45,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:28:45,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 03:28:45,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883449186] [2025-01-09 03:28:45,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:28:45,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 03:28:45,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:28:45,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 03:28:45,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 03:28:45,470 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 18 states have internal predecessors, (25), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 03:28:45,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:28:45,487 INFO L93 Difference]: Finished difference Result 59 states and 96 transitions. [2025-01-09 03:28:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 03:28:45,489 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2025-01-09 03:28:45,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:28:45,494 INFO L225 Difference]: With dead ends: 59 [2025-01-09 03:28:45,495 INFO L226 Difference]: Without dead ends: 27 [2025-01-09 03:28:45,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 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 03:28:45,501 INFO L435 NwaCegarLoop]: 41 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, 41 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 03:28:45,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:28:45,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-09 03:28:45,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-01-09 03:28:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-09 03:28:45,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2025-01-09 03:28:45,530 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 23 [2025-01-09 03:28:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:28:45,531 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2025-01-09 03:28:45,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 03:28:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2025-01-09 03:28:45,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 03:28:45,532 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:28:45,532 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:28:45,539 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 03:28:45,737 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 03:28:45,737 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:28:45,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:28:45,738 INFO L85 PathProgramCache]: Analyzing trace with hash 883721824, now seen corresponding path program 1 times [2025-01-09 03:28:45,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:28:45,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756991865] [2025-01-09 03:28:45,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:45,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:28:45,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 03:28:45,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:28:45,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:45,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:28:45,927 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:28:45,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:28:45,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756991865] [2025-01-09 03:28:45,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756991865] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:28:45,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:28:45,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:28:45,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486391050] [2025-01-09 03:28:45,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:28:45,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:28:45,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:28:45,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:28:45,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:28:45,929 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 03:28:45,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:28:45,984 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2025-01-09 03:28:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:28:45,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2025-01-09 03:28:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:28:45,986 INFO L225 Difference]: With dead ends: 39 [2025-01-09 03:28:45,986 INFO L226 Difference]: Without dead ends: 37 [2025-01-09 03:28:45,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:28:45,987 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:28:45,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 119 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:28:45,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-09 03:28:45,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-01-09 03:28:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-09 03:28:45,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2025-01-09 03:28:45,997 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 23 [2025-01-09 03:28:45,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:28:45,998 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2025-01-09 03:28:45,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-09 03:28:45,998 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2025-01-09 03:28:45,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 03:28:45,999 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:28:45,999 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:28:45,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 03:28:45,999 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:28:45,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:28:45,999 INFO L85 PathProgramCache]: Analyzing trace with hash 958953015, now seen corresponding path program 1 times [2025-01-09 03:28:46,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:28:46,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633943367] [2025-01-09 03:28:46,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:46,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:28:46,007 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-09 03:28:46,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:28:46,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:46,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:28:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:28:46,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:28:46,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633943367] [2025-01-09 03:28:46,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633943367] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:28:46,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:28:46,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:28:46,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470350105] [2025-01-09 03:28:46,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:28:46,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:28:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:28:46,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:28:46,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:28:46,233 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:28:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:28:46,303 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2025-01-09 03:28:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:28:46,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2025-01-09 03:28:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:28:46,307 INFO L225 Difference]: With dead ends: 43 [2025-01-09 03:28:46,307 INFO L226 Difference]: Without dead ends: 41 [2025-01-09 03:28:46,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-01-09 03:28:46,307 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:28:46,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 116 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:28:46,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-09 03:28:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2025-01-09 03:28:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-01-09 03:28:46,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2025-01-09 03:28:46,315 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 28 [2025-01-09 03:28:46,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:28:46,315 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2025-01-09 03:28:46,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-09 03:28:46,316 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2025-01-09 03:28:46,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-09 03:28:46,316 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:28:46,317 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:28:46,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 03:28:46,317 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:28:46,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:28:46,318 INFO L85 PathProgramCache]: Analyzing trace with hash 248048768, now seen corresponding path program 1 times [2025-01-09 03:28:46,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:28:46,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838075902] [2025-01-09 03:28:46,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:46,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:28:46,324 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 03:28:46,343 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:28:46,344 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:46,344 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:28:46,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380906753] [2025-01-09 03:28:46,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:46,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:28:46,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:28:46,350 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 03:28:46,351 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 03:28:46,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-01-09 03:28:46,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-01-09 03:28:46,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:46,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:28:46,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 03:28:46,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:28:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-09 03:28:46,548 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:28:46,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:28:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838075902] [2025-01-09 03:28:46,549 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:28:46,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380906753] [2025-01-09 03:28:46,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380906753] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:28:46,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:28:46,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-01-09 03:28:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458446345] [2025-01-09 03:28:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:28:46,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 03:28:46,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:28:46,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 03:28:46,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-01-09 03:28:46,553 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 03:28:46,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:28:46,779 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2025-01-09 03:28:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 03:28:46,780 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33 [2025-01-09 03:28:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:28:46,781 INFO L225 Difference]: With dead ends: 58 [2025-01-09 03:28:46,781 INFO L226 Difference]: Without dead ends: 46 [2025-01-09 03:28:46,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-01-09 03:28:46,781 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:28:46,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 157 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:28:46,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-01-09 03:28:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-01-09 03:28:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-01-09 03:28:46,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2025-01-09 03:28:46,788 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 33 [2025-01-09 03:28:46,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:28:46,788 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2025-01-09 03:28:46,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 03:28:46,789 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2025-01-09 03:28:46,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 03:28:46,789 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:28:46,789 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:28:46,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 03:28:46,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:28:46,990 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:28:46,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:28:46,991 INFO L85 PathProgramCache]: Analyzing trace with hash 488648399, now seen corresponding path program 1 times [2025-01-09 03:28:46,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:28:46,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190637284] [2025-01-09 03:28:46,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:46,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:28:46,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 03:28:47,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:28:47,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:47,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:28:47,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40154252] [2025-01-09 03:28:47,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:47,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:28:47,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:28:47,018 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 03:28:47,019 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 03:28:47,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-01-09 03:28:47,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 03:28:47,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:47,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:28:47,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 03:28:47,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:28:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-09 03:28:47,245 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:28:47,893 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-01-09 03:28:47,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:28:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190637284] [2025-01-09 03:28:47,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:28:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40154252] [2025-01-09 03:28:47,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40154252] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:28:47,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:28:47,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2025-01-09 03:28:47,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961399041] [2025-01-09 03:28:47,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:28:47,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 03:28:47,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:28:47,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 03:28:47,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:28:47,895 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 17 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2025-01-09 03:28:48,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:28:48,581 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2025-01-09 03:28:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 03:28:48,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 39 [2025-01-09 03:28:48,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:28:48,583 INFO L225 Difference]: With dead ends: 63 [2025-01-09 03:28:48,583 INFO L226 Difference]: Without dead ends: 56 [2025-01-09 03:28:48,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2025-01-09 03:28:48,584 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 28 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 03:28:48,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 163 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 03:28:48,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-01-09 03:28:48,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-01-09 03:28:48,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2025-01-09 03:28:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2025-01-09 03:28:48,591 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 39 [2025-01-09 03:28:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:28:48,591 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2025-01-09 03:28:48,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2025-01-09 03:28:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2025-01-09 03:28:48,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-09 03:28:48,592 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:28:48,592 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:28:48,597 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 03:28:48,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:28:48,792 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:28:48,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:28:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1350054135, now seen corresponding path program 1 times [2025-01-09 03:28:48,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:28:48,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52911317] [2025-01-09 03:28:48,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:48,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:28:48,796 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-09 03:28:48,806 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-09 03:28:48,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:48,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:28:48,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186497982] [2025-01-09 03:28:48,807 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:48,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:28:48,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:28:48,809 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 03:28:48,811 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 03:28:48,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-09 03:28:48,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-09 03:28:48,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:48,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:28:48,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 03:28:48,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:28:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 03:28:49,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:28:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-09 03:28:49,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:28:49,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52911317] [2025-01-09 03:28:49,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:28:49,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186497982] [2025-01-09 03:28:49,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186497982] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:28:49,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:28:49,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 17 [2025-01-09 03:28:49,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778020852] [2025-01-09 03:28:49,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:28:49,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 03:28:49,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:28:49,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 03:28:49,572 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:28:49,572 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 17 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 03:28:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:28:50,894 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2025-01-09 03:28:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 03:28:50,895 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16) Word has length 49 [2025-01-09 03:28:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:28:50,896 INFO L225 Difference]: With dead ends: 79 [2025-01-09 03:28:50,897 INFO L226 Difference]: Without dead ends: 71 [2025-01-09 03:28:50,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:28:50,898 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:28:50,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 197 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-09 03:28:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-01-09 03:28:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-01-09 03:28:50,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 43 states have internal predecessors, (45), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2025-01-09 03:28:50,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2025-01-09 03:28:50,914 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 49 [2025-01-09 03:28:50,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:28:50,916 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2025-01-09 03:28:50,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 12 states have internal predecessors, (25), 7 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 9 states have call predecessors, (16), 5 states have call successors, (16) [2025-01-09 03:28:50,916 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2025-01-09 03:28:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-09 03:28:50,917 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:28:50,918 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:28:50,925 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 03:28:51,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-09 03:28:51,118 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:28:51,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:28:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash 107182509, now seen corresponding path program 1 times [2025-01-09 03:28:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:28:51,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670016616] [2025-01-09 03:28:51,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:51,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:28:51,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-09 03:28:51,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-09 03:28:51,154 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:51,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:28:51,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794317043] [2025-01-09 03:28:51,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:51,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:28:51,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:28:51,157 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 03:28:51,158 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 03:28:51,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-01-09 03:28:51,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-01-09 03:28:51,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:51,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:28:51,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-09 03:28:51,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:28:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 32 proven. 31 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2025-01-09 03:28:51,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:28:53,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:28:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670016616] [2025-01-09 03:28:53,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:28:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794317043] [2025-01-09 03:28:53,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794317043] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:28:53,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:28:53,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2025-01-09 03:28:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686189785] [2025-01-09 03:28:53,284 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 03:28:53,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 03:28:53,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:28:53,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 03:28:53,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-01-09 03:28:53,285 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2025-01-09 03:28:53,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:28:53,550 INFO L93 Difference]: Finished difference Result 118 states and 144 transitions. [2025-01-09 03:28:53,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 03:28:53,550 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 67 [2025-01-09 03:28:53,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:28:53,551 INFO L225 Difference]: With dead ends: 118 [2025-01-09 03:28:53,551 INFO L226 Difference]: Without dead ends: 83 [2025-01-09 03:28:53,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 65 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2025-01-09 03:28:53,552 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:28:53,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 262 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:28:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-01-09 03:28:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2025-01-09 03:28:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 47 states have (on average 1.127659574468085) internal successors, (53), 50 states have internal predecessors, (53), 22 states have call successors, (22), 11 states have call predecessors, (22), 11 states have return successors, (21), 19 states have call predecessors, (21), 21 states have call successors, (21) [2025-01-09 03:28:53,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2025-01-09 03:28:53,561 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 67 [2025-01-09 03:28:53,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:28:53,562 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2025-01-09 03:28:53,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 6 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2025-01-09 03:28:53,562 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2025-01-09 03:28:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-01-09 03:28:53,563 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:28:53,563 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:28:53,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 03:28:53,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:28:53,763 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:28:53,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:28:53,764 INFO L85 PathProgramCache]: Analyzing trace with hash 437150493, now seen corresponding path program 1 times [2025-01-09 03:28:53,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:28:53,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74223275] [2025-01-09 03:28:53,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:53,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:28:53,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-01-09 03:28:53,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-01-09 03:28:53,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:53,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:28:53,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308798408] [2025-01-09 03:28:53,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:28:53,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:28:53,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:28:53,798 INFO L229 MonitoredProcess]: Starting monitored process 7 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 03:28:53,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 03:28:53,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-01-09 03:28:53,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-01-09 03:28:53,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:28:53,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:28:53,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-09 03:28:53,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:28:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 36 proven. 45 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2025-01-09 03:28:54,336 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:29:03,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:29:03,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74223275] [2025-01-09 03:29:03,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:29:03,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308798408] [2025-01-09 03:29:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308798408] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:29:03,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:29:03,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2025-01-09 03:29:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972155052] [2025-01-09 03:29:03,564 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 03:29:03,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 03:29:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:29:03,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 03:29:03,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=372, Unknown=2, NotChecked=0, Total=462 [2025-01-09 03:29:03,565 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 14 states have internal predecessors, (24), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2025-01-09 03:29:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:29:04,391 INFO L93 Difference]: Finished difference Result 100 states and 116 transitions. [2025-01-09 03:29:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 03:29:04,392 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.6) internal successors, (24), 14 states have internal predecessors, (24), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) Word has length 78 [2025-01-09 03:29:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:29:04,393 INFO L225 Difference]: With dead ends: 100 [2025-01-09 03:29:04,393 INFO L226 Difference]: Without dead ends: 75 [2025-01-09 03:29:04,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=149, Invalid=605, Unknown=2, NotChecked=0, Total=756 [2025-01-09 03:29:04,394 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:29:04,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 178 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:29:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-01-09 03:29:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2025-01-09 03:29:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 46 states have internal predecessors, (46), 18 states have call successors, (18), 11 states have call predecessors, (18), 11 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2025-01-09 03:29:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2025-01-09 03:29:04,402 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 78 [2025-01-09 03:29:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:29:04,402 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2025-01-09 03:29:04,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.6) internal successors, (24), 14 states have internal predecessors, (24), 7 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 6 states have call successors, (13) [2025-01-09 03:29:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2025-01-09 03:29:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-01-09 03:29:04,403 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:29:04,403 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:29:04,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 03:29:04,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-09 03:29:04,604 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:29:04,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:29:04,604 INFO L85 PathProgramCache]: Analyzing trace with hash -583917861, now seen corresponding path program 1 times [2025-01-09 03:29:04,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:29:04,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900409720] [2025-01-09 03:29:04,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:29:04,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:29:04,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-01-09 03:29:04,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-01-09 03:29:04,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:29:04,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:29:18,024 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2025-01-09 03:29:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:29:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900409720] [2025-01-09 03:29:18,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900409720] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:29:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158192613] [2025-01-09 03:29:18,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:29:18,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:29:18,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:29:18,027 INFO L229 MonitoredProcess]: Starting monitored process 8 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 03:29:18,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 03:29:18,049 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-01-09 03:29:18,061 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-01-09 03:29:18,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:29:18,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:29:18,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 03:29:18,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:29:18,179 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 38 proven. 10 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2025-01-09 03:29:18,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:29:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158192613] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:29:18,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 03:29:18,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2025-01-09 03:29:18,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383206737] [2025-01-09 03:29:18,295 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 03:29:18,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 03:29:18,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:29:18,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 03:29:18,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:29:18,296 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2025-01-09 03:29:35,472 WARN L286 SmtUtils]: Spent 16.76s on a formula simplification. DAG size of input: 82 DAG size of output: 80 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-09 03:29:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:29:36,005 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2025-01-09 03:29:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 03:29:36,006 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) Word has length 78 [2025-01-09 03:29:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:29:36,006 INFO L225 Difference]: With dead ends: 89 [2025-01-09 03:29:36,006 INFO L226 Difference]: Without dead ends: 68 [2025-01-09 03:29:36,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2025-01-09 03:29:36,007 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 03:29:36,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 240 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 03:29:36,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-01-09 03:29:36,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-01-09 03:29:36,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 42 states have (on average 1.0) internal successors, (42), 42 states have internal predecessors, (42), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-01-09 03:29:36,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2025-01-09 03:29:36,018 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 78 [2025-01-09 03:29:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:29:36,018 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2025-01-09 03:29:36,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 8 states have call predecessors, (19), 7 states have call successors, (19) [2025-01-09 03:29:36,018 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2025-01-09 03:29:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-01-09 03:29:36,020 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:29:36,020 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:29:36,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 03:29:36,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:29:36,220 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:29:36,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:29:36,221 INFO L85 PathProgramCache]: Analyzing trace with hash 900038234, now seen corresponding path program 1 times [2025-01-09 03:29:36,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:29:36,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031110834] [2025-01-09 03:29:36,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:29:36,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:29:36,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-01-09 03:29:36,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-01-09 03:29:36,241 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:29:36,242 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:29:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2025-01-09 03:29:36,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:29:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031110834] [2025-01-09 03:29:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031110834] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:29:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363840971] [2025-01-09 03:29:36,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:29:36,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:29:36,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:29:36,570 INFO L229 MonitoredProcess]: Starting monitored process 9 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 03:29:36,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 03:29:36,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-01-09 03:29:36,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-01-09 03:29:36,610 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:29:36,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:29:36,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-09 03:29:36,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:29:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 49 proven. 52 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2025-01-09 03:29:37,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:29:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 31 proven. 58 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2025-01-09 03:29:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363840971] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:29:38,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:29:38,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 19, 17] total 35 [2025-01-09 03:29:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383796861] [2025-01-09 03:29:38,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:29:38,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 03:29:38,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:29:38,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 03:29:38,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 03:29:38,266 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 35 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 25 states have internal predecessors, (43), 19 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 23 states have call predecessors, (39), 18 states have call successors, (39) [2025-01-09 03:29:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:29:42,734 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2025-01-09 03:29:42,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 03:29:42,734 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 25 states have internal predecessors, (43), 19 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 23 states have call predecessors, (39), 18 states have call successors, (39) Word has length 83 [2025-01-09 03:29:42,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:29:42,735 INFO L225 Difference]: With dead ends: 68 [2025-01-09 03:29:42,735 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 03:29:42,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=259, Invalid=1381, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 03:29:42,736 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 03:29:42,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 364 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 03:29:42,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 03:29:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 03:29:42,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 03:29:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 03:29:42,737 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2025-01-09 03:29:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:29:42,737 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 03:29:42,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 25 states have internal predecessors, (43), 19 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (39), 23 states have call predecessors, (39), 18 states have call successors, (39) [2025-01-09 03:29:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 03:29:42,737 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 03:29:42,739 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 03:29:42,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 03:29:42,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:29:42,942 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:29:42,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 03:29:51,488 WARN L286 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 53 DAG size of output: 31 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2025-01-09 03:29:52,053 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 03:29:52,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 03:29:52 BoogieIcfgContainer [2025-01-09 03:29:52,063 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 03:29:52,063 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 03:29:52,064 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 03:29:52,064 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 03:29:52,064 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:28:45" (3/4) ... [2025-01-09 03:29:52,065 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 03:29:52,070 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-01-09 03:29:52,070 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-01-09 03:29:52,074 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-01-09 03:29:52,074 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 03:29:52,074 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 03:29:52,074 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 03:29:52,121 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 03:29:52,121 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 03:29:52,121 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 03:29:52,122 INFO L158 Benchmark]: Toolchain (without parser) took 67346.03ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 113.5MB in the beginning and 137.8MB in the end (delta: -24.3MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2025-01-09 03:29:52,122 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:29:52,122 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.81ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 102.0MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:29:52,122 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.48ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 100.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:29:52,122 INFO L158 Benchmark]: Boogie Preprocessor took 27.60ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 99.4MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:29:52,122 INFO L158 Benchmark]: RCFGBuilder took 198.52ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 87.6MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:29:52,123 INFO L158 Benchmark]: TraceAbstraction took 66882.25ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 87.1MB in the beginning and 144.3MB in the end (delta: -57.2MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2025-01-09 03:29:52,123 INFO L158 Benchmark]: Witness Printer took 57.57ms. Allocated memory is still 176.2MB. Free memory was 144.3MB in the beginning and 137.8MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:29:52,124 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.81ms. Allocated memory is still 142.6MB. Free memory was 113.0MB in the beginning and 102.0MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.48ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 100.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.60ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 99.4MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 198.52ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 87.6MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 66882.25ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 87.1MB in the beginning and 144.3MB in the end (delta: -57.2MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. * Witness Printer took 57.57ms. Allocated memory is still 176.2MB. Free memory was 144.3MB in the beginning and 137.8MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.7s, OverallIterations: 10, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 25.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 1837 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1563 mSDsCounter, 189 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1947 IncrementalHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 189 mSolverCounterUnsat, 274 mSDtfsCounter, 1947 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 730 GetRequests, 565 SyntacticMatches, 11 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 42.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=7, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 29.5s InterpolantComputationTime, 951 NumberOfCodeBlocks, 951 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 840 ConstructedInterpolants, 0 QuantifiedInterpolants, 4604 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1049 ConjunctsInSsa, 218 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 1611/1845 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((r <= 0) && (p == 1)) && (B == d)) && (q == 0)) && (A == r)) && (d == 1)) || ((((((d == 1) && (p == 1)) && (A == 1)) && (B == 1)) && (q == 1)) && (((long long) r + 1) == A))) || (((((((((((d + (((((unsigned long long) 4294967295 * d) + B) + r) % 4294967296)) + 1) + d) <= (((long long) 2 * B) + ((long long) 3 * r))) && (A <= 1)) && (2 == p)) && (B <= ((d / 2) + 1))) && (B == 1)) && (q == 0)) && (A == r)) && (((long long) r + 1) <= d))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((p == 1) && (A <= 1)) && (B == d)) && (q == 0)) && (A == r)) && (d == 1)) || (((((((((((d + (((((unsigned long long) 4294967295 * d) + B) + r) % 4294967296)) + 1) + d) <= (((long long) 2 * B) + ((long long) 3 * r))) && (A <= 1)) && (2 == p)) && (B <= ((d / 2) + 1))) && (B == 1)) && (q == 0)) && (A == r)) && (((long long) r + 1) <= d))) RESULT: Ultimate proved your program to be correct! [2025-01-09 03:29:52,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE