./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.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/cohendiv-ll_valuebound2.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 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 03:11:47,057 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 03:11:47,119 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 03:11:47,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 03:11:47,122 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 03:11:47,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 03:11:47,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 03:11:47,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 03:11:47,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 03:11:47,138 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 03:11:47,138 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 03:11:47,138 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 03:11:47,138 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 03:11:47,139 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 03:11:47,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 03:11:47,140 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 03:11:47,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 03:11:47,140 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 03:11:47,140 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 03:11:47,140 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 03:11:47,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:11:47,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:11:47,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:11:47,141 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:11:47,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 03:11:47,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 03:11:47,142 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 03:11:47,142 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 03:11:47,142 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 03:11:47,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 03:11:47,142 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 -> 95c338a7a91abcfb8302c7314ea1de7bdde280884a10e8d539233a34032b9a5d [2025-01-09 03:11:47,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 03:11:47,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 03:11:47,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 03:11:47,338 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 03:11:47,339 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 03:11:47,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2025-01-09 03:11:48,502 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/05832f8b9/64cd9ba291ef40b594b4b632a11e35b4/FLAG4a3ca13a0 [2025-01-09 03:11:48,755 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 03:11:48,756 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound2.c [2025-01-09 03:11:48,762 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/05832f8b9/64cd9ba291ef40b594b4b632a11e35b4/FLAG4a3ca13a0 [2025-01-09 03:11:48,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/05832f8b9/64cd9ba291ef40b594b4b632a11e35b4 [2025-01-09 03:11:48,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 03:11:48,786 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 03:11:48,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 03:11:48,788 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 03:11:48,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 03:11:48,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39185eb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48, skipping insertion in model container [2025-01-09 03:11:48,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,804 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 03:11:48,898 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/cohendiv-ll_valuebound2.c[576,589] [2025-01-09 03:11:48,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:11:48,915 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 03:11:48,923 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/cohendiv-ll_valuebound2.c[576,589] [2025-01-09 03:11:48,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 03:11:48,935 INFO L204 MainTranslator]: Completed translation [2025-01-09 03:11:48,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48 WrapperNode [2025-01-09 03:11:48,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 03:11:48,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 03:11:48,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 03:11:48,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 03:11:48,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,943 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,951 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2025-01-09 03:11:48,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 03:11:48,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 03:11:48,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 03:11:48,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 03:11:48,957 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,957 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,966 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 03:11:48,967 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,967 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,968 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,973 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,975 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,975 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 03:11:48,980 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 03:11:48,980 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 03:11:48,980 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 03:11:48,981 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (1/1) ... [2025-01-09 03:11:48,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 03:11:49,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:49,009 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 03:11:49,011 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 03:11:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 03:11:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 03:11:49,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 03:11:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 03:11:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 03:11:49,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 03:11:49,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 03:11:49,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 03:11:49,068 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 03:11:49,072 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 03:11:49,188 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-01-09 03:11:49,188 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 03:11:49,194 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 03:11:49,194 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-09 03:11:49,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:11:49 BoogieIcfgContainer [2025-01-09 03:11:49,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 03:11:49,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 03:11:49,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 03:11:49,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 03:11:49,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 03:11:48" (1/3) ... [2025-01-09 03:11:49,199 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bedf0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:11:49, skipping insertion in model container [2025-01-09 03:11:49,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 03:11:48" (2/3) ... [2025-01-09 03:11:49,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bedf0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 03:11:49, skipping insertion in model container [2025-01-09 03:11:49,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:11:49" (3/3) ... [2025-01-09 03:11:49,201 INFO L128 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound2.c [2025-01-09 03:11:49,210 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 03:11:49,211 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cohendiv-ll_valuebound2.c that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 03:11:49,247 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 03:11:49,256 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;@1f381012, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 03:11:49,256 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 03:11:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.25) internal successors, (25), 19 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 03:11:49,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 03:11:49,263 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:11:49,264 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 03:11:49,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:11:49,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:11:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash -441304515, now seen corresponding path program 1 times [2025-01-09 03:11:49,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:11:49,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553240777] [2025-01-09 03:11:49,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:49,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:11:49,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 03:11:49,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:11:49,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:49,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:11:49,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446546059] [2025-01-09 03:11:49,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:49,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:49,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:49,342 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 03:11:49,345 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 03:11:49,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 03:11:49,405 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 03:11:49,405 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:49,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:49,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:11:49,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:11:49,487 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 03:11:49,487 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:11:49,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:11:49,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553240777] [2025-01-09 03:11:49,488 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:11:49,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446546059] [2025-01-09 03:11:49,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446546059] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:11:49,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:11:49,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:11:49,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173551524] [2025-01-09 03:11:49,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:11:49,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:11:49,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:11:49,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:11:49,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:11:49,510 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.25) internal successors, (25), 19 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 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 03:11:49,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:11:49,584 INFO L93 Difference]: Finished difference Result 71 states and 114 transitions. [2025-01-09 03:11:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:11:49,587 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 03:11:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:11:49,591 INFO L225 Difference]: With dead ends: 71 [2025-01-09 03:11:49,592 INFO L226 Difference]: Without dead ends: 36 [2025-01-09 03:11:49,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 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 03:11:49,598 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:11:49,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 138 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:11:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-01-09 03:11:49,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2025-01-09 03:11:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2025-01-09 03:11:49,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2025-01-09 03:11:49,624 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 23 [2025-01-09 03:11:49,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:11:49,624 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2025-01-09 03:11:49,624 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 03:11:49,624 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2025-01-09 03:11:49,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-09 03:11:49,625 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:11:49,625 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 03:11:49,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-09 03:11:49,830 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 03:11:49,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:11:49,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:11:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1336800567, now seen corresponding path program 1 times [2025-01-09 03:11:49,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:11:49,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433018295] [2025-01-09 03:11:49,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:49,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:11:49,837 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-09 03:11:49,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:11:49,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:49,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:11:49,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817542145] [2025-01-09 03:11:49,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:49,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:49,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:49,850 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 03:11:49,851 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 03:11:49,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-01-09 03:11:49,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-01-09 03:11:49,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:49,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:49,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:11:49,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:11:49,917 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 03:11:49,917 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:11:49,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:11:49,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433018295] [2025-01-09 03:11:49,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:11:49,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817542145] [2025-01-09 03:11:49,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817542145] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:11:49,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:11:49,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:11:49,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109507693] [2025-01-09 03:11:49,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:11:49,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:11:49,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:11:49,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:11:49,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:11:49,919 INFO L87 Difference]: Start difference. First operand 33 states and 42 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 03:11:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:11:49,965 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2025-01-09 03:11:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:11:49,966 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 03:11:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:11:49,967 INFO L225 Difference]: With dead ends: 49 [2025-01-09 03:11:49,967 INFO L226 Difference]: Without dead ends: 46 [2025-01-09 03:11:49,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 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 03:11:49,968 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:11:49,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 112 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:11:49,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-01-09 03:11:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2025-01-09 03:11:49,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-01-09 03:11:49,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2025-01-09 03:11:49,974 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 28 [2025-01-09 03:11:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:11:49,974 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2025-01-09 03:11:49,974 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 03:11:49,974 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2025-01-09 03:11:49,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 03:11:49,975 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:11:49,975 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, 1] [2025-01-09 03:11:49,980 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 03:11:50,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:50,176 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:11:50,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:11:50,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1480006958, now seen corresponding path program 1 times [2025-01-09 03:11:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:11:50,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310603617] [2025-01-09 03:11:50,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:50,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:11:50,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 03:11:50,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:11:50,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:50,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:11:50,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725250456] [2025-01-09 03:11:50,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:50,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:50,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:50,196 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 03:11:50,197 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 03:11:50,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 03:11:50,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 03:11:50,229 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:50,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:50,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 03:11:50,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:11:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-01-09 03:11:50,264 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:11:50,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:11:50,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310603617] [2025-01-09 03:11:50,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:11:50,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725250456] [2025-01-09 03:11:50,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725250456] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:11:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 03:11:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 03:11:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594991252] [2025-01-09 03:11:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:11:50,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:11:50,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:11:50,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:11:50,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-01-09 03:11:50,265 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-09 03:11:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:11:50,312 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2025-01-09 03:11:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:11:50,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2025-01-09 03:11:50,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:11:50,314 INFO L225 Difference]: With dead ends: 68 [2025-01-09 03:11:50,314 INFO L226 Difference]: Without dead ends: 66 [2025-01-09 03:11:50,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 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 03:11:50,315 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:11:50,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 122 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:11:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-01-09 03:11:50,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2025-01-09 03:11:50,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-01-09 03:11:50,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2025-01-09 03:11:50,333 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 34 [2025-01-09 03:11:50,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:11:50,333 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2025-01-09 03:11:50,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2025-01-09 03:11:50,334 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2025-01-09 03:11:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-09 03:11:50,334 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:11:50,335 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:11:50,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 03:11:50,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:50,539 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:11:50,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:11:50,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1270839278, now seen corresponding path program 1 times [2025-01-09 03:11:50,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:11:50,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447604613] [2025-01-09 03:11:50,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:50,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:11:50,549 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 03:11:50,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 03:11:50,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:50,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:50,879 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:11:50,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:11:50,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447604613] [2025-01-09 03:11:50,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447604613] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:11:50,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649817657] [2025-01-09 03:11:50,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:50,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:50,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:50,885 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 03:11:50,886 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 03:11:50,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 03:11:50,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 03:11:50,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:50,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:50,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:11:50,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:11:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:11:50,996 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:11:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-09 03:11:51,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649817657] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:11:51,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:11:51,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2025-01-09 03:11:51,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117320498] [2025-01-09 03:11:51,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:11:51,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 03:11:51,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:11:51,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 03:11:51,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:11:51,121 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-01-09 03:11:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:11:51,265 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2025-01-09 03:11:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:11:51,265 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 44 [2025-01-09 03:11:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:11:51,267 INFO L225 Difference]: With dead ends: 67 [2025-01-09 03:11:51,267 INFO L226 Difference]: Without dead ends: 65 [2025-01-09 03:11:51,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:11:51,268 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:11:51,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 188 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:11:51,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-01-09 03:11:51,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2025-01-09 03:11:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-01-09 03:11:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2025-01-09 03:11:51,275 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 44 [2025-01-09 03:11:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:11:51,275 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2025-01-09 03:11:51,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2025-01-09 03:11:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2025-01-09 03:11:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-01-09 03:11:51,276 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:11:51,276 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:11:51,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 03:11:51,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:51,476 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:11:51,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:11:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash 151931684, now seen corresponding path program 1 times [2025-01-09 03:11:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:11:51,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179753271] [2025-01-09 03:11:51,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:51,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:11:51,481 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-01-09 03:11:51,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 03:11:51,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:51,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-01-09 03:11:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:11:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179753271] [2025-01-09 03:11:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179753271] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:11:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303559175] [2025-01-09 03:11:51,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:51,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:51,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:51,624 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 03:11:51,626 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 03:11:51,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-01-09 03:11:51,659 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 03:11:51,659 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:51,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:51,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 03:11:51,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:11:51,710 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2025-01-09 03:11:51,711 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:11:51,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303559175] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:11:51,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:11:51,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-01-09 03:11:51,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893444442] [2025-01-09 03:11:51,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:11:51,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 03:11:51,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:11:51,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 03:11:51,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:11:51,712 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:11:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:11:51,774 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2025-01-09 03:11:51,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 03:11:51,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2025-01-09 03:11:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:11:51,775 INFO L225 Difference]: With dead ends: 76 [2025-01-09 03:11:51,775 INFO L226 Difference]: Without dead ends: 74 [2025-01-09 03:11:51,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:11:51,776 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:11:51,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 153 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:11:51,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-01-09 03:11:51,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2025-01-09 03:11:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 40 states have internal predecessors, (42), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 03:11:51,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2025-01-09 03:11:51,784 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 50 [2025-01-09 03:11:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:11:51,787 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2025-01-09 03:11:51,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2025-01-09 03:11:51,787 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2025-01-09 03:11:51,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-01-09 03:11:51,788 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:11:51,788 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:11:51,795 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 03:11:51,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:51,988 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:11:51,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:11:51,990 INFO L85 PathProgramCache]: Analyzing trace with hash -276783268, now seen corresponding path program 1 times [2025-01-09 03:11:51,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:11:51,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988724248] [2025-01-09 03:11:51,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:51,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:11:51,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-09 03:11:52,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-09 03:11:52,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:52,006 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 03:11:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135204574] [2025-01-09 03:11:52,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:52,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:52,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:52,011 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 03:11:52,012 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 03:11:52,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-09 03:11:52,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-09 03:11:52,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:52,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:52,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 03:11:52,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:11:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-01-09 03:11:52,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:11:52,442 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-01-09 03:11:52,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:11:52,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988724248] [2025-01-09 03:11:52,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 03:11:52,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135204574] [2025-01-09 03:11:52,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135204574] provided 1 perfect and 1 imperfect interpolant sequences [2025-01-09 03:11:52,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:11:52,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2025-01-09 03:11:52,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850905080] [2025-01-09 03:11:52,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:11:52,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 03:11:52,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:11:52,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 03:11:52,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-01-09 03:11:52,444 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-09 03:11:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:11:52,555 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2025-01-09 03:11:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:11:52,556 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2025-01-09 03:11:52,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:11:52,557 INFO L225 Difference]: With dead ends: 75 [2025-01-09 03:11:52,557 INFO L226 Difference]: Without dead ends: 72 [2025-01-09 03:11:52,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2025-01-09 03:11:52,558 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:11:52,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 108 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:11:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-01-09 03:11:52,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-01-09 03:11:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2025-01-09 03:11:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2025-01-09 03:11:52,570 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 56 [2025-01-09 03:11:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:11:52,571 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2025-01-09 03:11:52,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2025-01-09 03:11:52,571 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2025-01-09 03:11:52,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 03:11:52,572 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:11:52,572 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 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] [2025-01-09 03:11:52,582 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 03:11:52,776 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,SelfDestructingSolverStorable5 [2025-01-09 03:11:52,776 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:11:52,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:11:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2106275859, now seen corresponding path program 2 times [2025-01-09 03:11:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:11:52,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324991280] [2025-01-09 03:11:52,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:11:52,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:11:52,785 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-01-09 03:11:52,798 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 03:11:52,798 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:11:52,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2025-01-09 03:11:52,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:11:52,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324991280] [2025-01-09 03:11:52,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324991280] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:11:52,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139766768] [2025-01-09 03:11:52,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 03:11:52,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:52,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:52,956 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 03:11:52,957 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 03:11:52,976 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-01-09 03:11:52,992 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 03:11:52,992 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 03:11:52,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:52,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-09 03:11:52,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:11:53,043 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2025-01-09 03:11:53,043 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 03:11:53,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139766768] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 03:11:53,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 03:11:53,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2025-01-09 03:11:53,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229861401] [2025-01-09 03:11:53,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 03:11:53,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 03:11:53,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:11:53,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 03:11:53,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:11:53,045 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-01-09 03:11:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:11:53,090 INFO L93 Difference]: Finished difference Result 111 states and 141 transitions. [2025-01-09 03:11:53,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 03:11:53,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 72 [2025-01-09 03:11:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:11:53,091 INFO L225 Difference]: With dead ends: 111 [2025-01-09 03:11:53,091 INFO L226 Difference]: Without dead ends: 72 [2025-01-09 03:11:53,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2025-01-09 03:11:53,092 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 03:11:53,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 89 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 03:11:53,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-01-09 03:11:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2025-01-09 03:11:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 40 states have internal predecessors, (41), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2025-01-09 03:11:53,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2025-01-09 03:11:53,103 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 72 [2025-01-09 03:11:53,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:11:53,103 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2025-01-09 03:11:53,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-01-09 03:11:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2025-01-09 03:11:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 03:11:53,104 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:11:53,104 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 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] [2025-01-09 03:11:53,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 03:11:53,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:53,308 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:11:53,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:11:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash 2049838550, now seen corresponding path program 1 times [2025-01-09 03:11:53,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:11:53,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069712759] [2025-01-09 03:11:53,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:53,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:11:53,313 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 03:11:53,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 03:11:53,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:53,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-01-09 03:11:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:11:53,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069712759] [2025-01-09 03:11:53,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069712759] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:11:53,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711760233] [2025-01-09 03:11:53,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:53,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:53,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:53,444 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 03:11:53,446 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 03:11:53,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 72 statements into 1 equivalence classes. [2025-01-09 03:11:53,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 72 of 72 statements. [2025-01-09 03:11:53,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:53,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:53,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 03:11:53,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:11:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-01-09 03:11:53,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:11:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-01-09 03:11:53,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711760233] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:11:53,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:11:53,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-01-09 03:11:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311155461] [2025-01-09 03:11:53,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:11:53,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 03:11:53,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:11:53,618 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 03:11:53,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-01-09 03:11:53,618 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-01-09 03:11:53,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:11:53,711 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2025-01-09 03:11:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 03:11:53,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 72 [2025-01-09 03:11:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:11:53,712 INFO L225 Difference]: With dead ends: 80 [2025-01-09 03:11:53,712 INFO L226 Difference]: Without dead ends: 78 [2025-01-09 03:11:53,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 139 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-01-09 03:11:53,713 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 03:11:53,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 03:11:53,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-01-09 03:11:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2025-01-09 03:11:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2025-01-09 03:11:53,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2025-01-09 03:11:53,730 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 72 [2025-01-09 03:11:53,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:11:53,730 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2025-01-09 03:11:53,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2025-01-09 03:11:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2025-01-09 03:11:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-01-09 03:11:53,731 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 03:11:53,732 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 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 03:11:53,737 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 03:11:53,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:53,932 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 03:11:53,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 03:11:53,933 INFO L85 PathProgramCache]: Analyzing trace with hash -368441019, now seen corresponding path program 1 times [2025-01-09 03:11:53,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 03:11:53,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140784270] [2025-01-09 03:11:53,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:53,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 03:11:53,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-01-09 03:11:53,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-01-09 03:11:53,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:53,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2025-01-09 03:11:54,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:11:54,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140784270] [2025-01-09 03:11:54,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140784270] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:11:54,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678480352] [2025-01-09 03:11:54,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 03:11:54,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:54,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:11:54,079 INFO L229 MonitoredProcess]: Starting monitored process 10 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 03:11:54,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 03:11:54,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-01-09 03:11:54,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-01-09 03:11:54,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 03:11:54,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:11:54,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 03:11:54,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:11:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2025-01-09 03:11:54,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 03:11:54,429 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2025-01-09 03:11:54,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678480352] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 03:11:54,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 03:11:54,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2025-01-09 03:11:54,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429209648] [2025-01-09 03:11:54,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 03:11:54,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 03:11:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 03:11:54,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 03:11:54,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2025-01-09 03:11:54,431 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2025-01-09 03:11:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 03:11:54,897 INFO L93 Difference]: Finished difference Result 135 states and 174 transitions. [2025-01-09 03:11:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 03:11:54,898 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 94 [2025-01-09 03:11:54,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 03:11:54,899 INFO L225 Difference]: With dead ends: 135 [2025-01-09 03:11:54,899 INFO L226 Difference]: Without dead ends: 0 [2025-01-09 03:11:54,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 03:11:54,903 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 44 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 03:11:54,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 341 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 03:11:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-01-09 03:11:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-01-09 03:11:54,903 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 03:11:54,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-01-09 03:11:54,903 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2025-01-09 03:11:54,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 03:11:54,904 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-01-09 03:11:54,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2025-01-09 03:11:54,904 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-01-09 03:11:54,904 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-01-09 03:11:54,907 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-01-09 03:11:54,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 03:11:55,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:11:55,110 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 03:11:55,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-01-09 03:11:55,847 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 03:11:55,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 03:11:55 BoogieIcfgContainer [2025-01-09 03:11:55,859 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 03:11:55,859 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 03:11:55,859 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 03:11:55,859 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 03:11:55,860 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 03:11:49" (3/4) ... [2025-01-09 03:11:55,861 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-01-09 03:11:55,868 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-01-09 03:11:55,868 INFO L362 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-01-09 03:11:55,870 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-01-09 03:11:55,870 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-01-09 03:11:55,870 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-01-09 03:11:55,870 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-01-09 03:11:55,932 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 03:11:55,933 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 03:11:55,933 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 03:11:55,933 INFO L158 Benchmark]: Toolchain (without parser) took 7146.92ms. Allocated memory was 142.6MB in the beginning and 293.6MB in the end (delta: 151.0MB). Free memory was 106.2MB in the beginning and 104.0MB in the end (delta: 2.1MB). Peak memory consumption was 150.8MB. Max. memory is 16.1GB. [2025-01-09 03:11:55,933 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:11:55,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.28ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 95.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:11:55,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.43ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 93.3MB in the end (delta: 734.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 03:11:55,934 INFO L158 Benchmark]: Boogie Preprocessor took 27.40ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 92.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:11:55,934 INFO L158 Benchmark]: RCFGBuilder took 214.85ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 80.5MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:11:55,935 INFO L158 Benchmark]: TraceAbstraction took 6662.78ms. Allocated memory was 142.6MB in the beginning and 293.6MB in the end (delta: 151.0MB). Free memory was 80.5MB in the beginning and 110.2MB in the end (delta: -29.7MB). Peak memory consumption was 117.3MB. Max. memory is 16.1GB. [2025-01-09 03:11:55,935 INFO L158 Benchmark]: Witness Printer took 73.58ms. Allocated memory is still 293.6MB. Free memory was 110.2MB in the beginning and 104.0MB in the end (delta: 6.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 03:11:55,936 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 126.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.28ms. Allocated memory is still 142.6MB. Free memory was 106.2MB in the beginning and 95.1MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.43ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 93.3MB in the end (delta: 734.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.40ms. Allocated memory is still 142.6MB. Free memory was 93.3MB in the beginning and 92.2MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 214.85ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 80.5MB in the end (delta: 11.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6662.78ms. Allocated memory was 142.6MB in the beginning and 293.6MB in the end (delta: 151.0MB). Free memory was 80.5MB in the beginning and 110.2MB in the end (delta: -29.7MB). Peak memory consumption was 117.3MB. Max. memory is 16.1GB. * Witness Printer took 73.58ms. Allocated memory is still 293.6MB. Free memory was 110.2MB in the beginning and 104.0MB in the end (delta: 6.2MB). 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 9, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 150 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 122 mSDsluCounter, 1398 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1096 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 723 IncrementalHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 302 mSDtfsCounter, 723 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 805 GetRequests, 686 SyntacticMatches, 9 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=6, InterpolantAutomatonStates: 68, 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, 9 MinimizatonAttempts, 26 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 946 NumberOfCodeBlocks, 946 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1053 ConstructedInterpolants, 0 QuantifiedInterpolants, 2171 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1134 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 2374/2460 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: 47]: Loop Invariant Derived loop invariant: ((((((((0 <= r) && (a == 1)) && (r == x)) && (q == 0)) && (((__int128) b + x) == ((__int128) r + y))) && (x <= 2)) || (((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (b <= ((__int128) r + y))) && (0 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) && (x <= 2))) || (((((((b <= ((long long) 2 * y)) && ((((__int128) a * y) + r) == ((__int128) b + x))) && (b <= ((__int128) r + y))) && (0 <= r)) && (r == x)) && (q == 0)) && (x <= 2))) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (0 <= ((__int128) r + y))) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) && (x <= 2)) || ((((((((__int128) r + 1) <= y) && (0 <= x)) && (b == y)) && (a == 1)) && ((((__int128) r + y) + ((__int128) q * y)) == ((__int128) b + x))) && (x <= 2))) || ((((((b == 0) && (0 <= r)) && (r == x)) && (q == 0)) && (a == 0)) && (x <= 2))) RESULT: Ultimate proved your program to be correct! [2025-01-09 03:11:55,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE