./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_both_ends_multiple_sum.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/array-cav19/array_init_both_ends_multiple_sum.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 54df2940ae4d13c219208dbc33c051105041923e87e99fc1d1620ede83e75392 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:34:30,226 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:34:30,290 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:34:30,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:34:30,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:34:30,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:34:30,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:34:30,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:34:30,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:34:30,326 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:34:30,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:34:30,327 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:34:30,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:34:30,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:34:30,327 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:34:30,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:34:30,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:34:30,328 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:34:30,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:34:30,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:34:30,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:34:30,328 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:34:30,328 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:34:30,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:34:30,329 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:34:30,329 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:34:30,329 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:34:30,329 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:34:30,329 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:34:30,329 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:34:30,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:34:30,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:34:30,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:34:30,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:34:30,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:34:30,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:34:30,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:34:30,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:34:30,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:34:30,331 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:34:30,331 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:34:30,331 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:34:30,331 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:34:30,331 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:34:30,331 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:34:30,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:34:30,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:34:30,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:34:30,332 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 -> 54df2940ae4d13c219208dbc33c051105041923e87e99fc1d1620ede83e75392 [2025-01-08 22:34:30,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:34:30,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:34:30,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:34:30,604 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:34:30,605 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:34:30,606 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_both_ends_multiple_sum.c [2025-01-08 22:34:31,843 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/959cd5de5/40b0493d8b794b55ac5f57216e589a46/FLAG021e3cc30 [2025-01-08 22:34:32,096 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:34:32,097 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_both_ends_multiple_sum.c [2025-01-08 22:34:32,118 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/959cd5de5/40b0493d8b794b55ac5f57216e589a46/FLAG021e3cc30 [2025-01-08 22:34:32,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/959cd5de5/40b0493d8b794b55ac5f57216e589a46 [2025-01-08 22:34:32,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:34:32,416 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:34:32,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:34:32,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:34:32,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:34:32,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184cb39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32, skipping insertion in model container [2025-01-08 22:34:32,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,438 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:34:32,567 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/array-cav19/array_init_both_ends_multiple_sum.c[424,437] [2025-01-08 22:34:32,582 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:34:32,591 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:34:32,601 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/array-cav19/array_init_both_ends_multiple_sum.c[424,437] [2025-01-08 22:34:32,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:34:32,624 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:34:32,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32 WrapperNode [2025-01-08 22:34:32,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:34:32,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:34:32,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:34:32,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:34:32,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,637 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,651 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2025-01-08 22:34:32,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:34:32,652 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:34:32,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:34:32,654 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:34:32,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,680 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-01-08 22:34:32,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,685 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,691 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,695 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:34:32,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:34:32,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:34:32,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:34:32,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (1/1) ... [2025-01-08 22:34:32,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:34:32,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:32,729 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) [2025-01-08 22:34:32,735 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 [2025-01-08 22:34:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:34:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:34:32,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:34:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:34:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:34:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:34:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:34:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:34:32,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:34:32,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:34:32,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:34:32,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:34:32,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:34:32,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:34:32,810 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:34:32,812 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:34:32,932 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-01-08 22:34:32,932 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:34:32,943 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:34:32,944 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:34:32,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:34:32 BoogieIcfgContainer [2025-01-08 22:34:32,944 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:34:32,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:34:32,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:34:32,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:34:32,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:34:32" (1/3) ... [2025-01-08 22:34:32,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e75693c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:34:32, skipping insertion in model container [2025-01-08 22:34:32,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:34:32" (2/3) ... [2025-01-08 22:34:32,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e75693c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:34:32, skipping insertion in model container [2025-01-08 22:34:32,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:34:32" (3/3) ... [2025-01-08 22:34:32,954 INFO L128 eAbstractionObserver]: Analyzing ICFG array_init_both_ends_multiple_sum.c [2025-01-08 22:34:32,966 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:34:32,968 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_init_both_ends_multiple_sum.c that has 1 procedures, 12 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:34:33,011 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:34:33,024 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;@67f8c638, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:34:33,024 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:34:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2025-01-08 22:34:33,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-08 22:34:33,033 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:33,034 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:33,034 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:33,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:33,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1807893837, now seen corresponding path program 1 times [2025-01-08 22:34:33,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:33,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606855251] [2025-01-08 22:34:33,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:34:33,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:33,121 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-08 22:34:33,143 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-08 22:34:33,143 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:34:33,143 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:34:33,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:33,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606855251] [2025-01-08 22:34:33,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606855251] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:34:33,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:34:33,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:34:33,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815737543] [2025-01-08 22:34:33,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:34:33,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:34:33,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:33,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:34:33,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:34:33,320 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-01-08 22:34:33,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:33,361 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2025-01-08 22:34:33,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:34:33,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) Word has length 7 [2025-01-08 22:34:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:33,366 INFO L225 Difference]: With dead ends: 24 [2025-01-08 22:34:33,366 INFO L226 Difference]: Without dead ends: 11 [2025-01-08 22:34:33,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:34:33,370 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:33,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 12 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:34:33,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2025-01-08 22:34:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2025-01-08 22:34:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2025-01-08 22:34:33,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-01-08 22:34:33,394 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2025-01-08 22:34:33,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:33,394 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-01-08 22:34:33,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2025-01-08 22:34:33,395 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2025-01-08 22:34:33,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-08 22:34:33,395 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:33,395 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:33,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:34:33,395 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:33,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:33,396 INFO L85 PathProgramCache]: Analyzing trace with hash -382835413, now seen corresponding path program 1 times [2025-01-08 22:34:33,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:33,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253203549] [2025-01-08 22:34:33,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:34:33,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:33,419 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:34:33,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:34:33,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:34:33,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:34:33,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:33,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253203549] [2025-01-08 22:34:33,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253203549] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:34:33,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862582482] [2025-01-08 22:34:33,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:34:33,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:33,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:33,556 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) [2025-01-08 22:34:33,557 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 [2025-01-08 22:34:33,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:34:33,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:34:33,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:34:33,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:33,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:34:33,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:34:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:34:33,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:34:33,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:34:33,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862582482] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:34:33,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:34:33,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-01-08 22:34:33,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786161675] [2025-01-08 22:34:33,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:34:33,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-08 22:34:33,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:33,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-08 22:34:33,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:34:33,724 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2025-01-08 22:34:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:33,829 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2025-01-08 22:34:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:34:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) Word has length 10 [2025-01-08 22:34:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:33,831 INFO L225 Difference]: With dead ends: 27 [2025-01-08 22:34:33,831 INFO L226 Difference]: Without dead ends: 20 [2025-01-08 22:34:33,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:34:33,832 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:33,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 9 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:34:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-08 22:34:33,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-01-08 22:34:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 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) [2025-01-08 22:34:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-01-08 22:34:33,840 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2025-01-08 22:34:33,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:33,841 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-01-08 22:34:33,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 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) [2025-01-08 22:34:33,842 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-01-08 22:34:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-08 22:34:33,842 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:33,842 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:33,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-08 22:34:34,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:34,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:34,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:34,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1131672115, now seen corresponding path program 2 times [2025-01-08 22:34:34,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:34,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523351400] [2025-01-08 22:34:34,044 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:34:34,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:34,063 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-08 22:34:34,115 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:34:34,115 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:34:34,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-08 22:34:34,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:34,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523351400] [2025-01-08 22:34:34,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523351400] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:34:34,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076625580] [2025-01-08 22:34:34,342 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:34:34,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:34,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:34,345 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) [2025-01-08 22:34:34,347 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 [2025-01-08 22:34:34,397 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-01-08 22:34:34,426 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:34:34,426 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:34:34,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:34,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-08 22:34:34,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:34:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-08 22:34:34,528 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:34:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-01-08 22:34:34,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076625580] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:34:34,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:34:34,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-01-08 22:34:34,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432561008] [2025-01-08 22:34:34,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:34:34,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-08 22:34:34,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:34,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-08 22:34:34,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:34:34,629 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 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) [2025-01-08 22:34:34,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:34,815 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2025-01-08 22:34:34,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:34:34,815 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 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) Word has length 19 [2025-01-08 22:34:34,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:34,816 INFO L225 Difference]: With dead ends: 51 [2025-01-08 22:34:34,816 INFO L226 Difference]: Without dead ends: 38 [2025-01-08 22:34:34,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:34:34,818 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:34,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 7 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:34:34,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-08 22:34:34,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-01-08 22:34:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 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) [2025-01-08 22:34:34,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2025-01-08 22:34:34,829 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 19 [2025-01-08 22:34:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:34,829 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2025-01-08 22:34:34,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 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) [2025-01-08 22:34:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2025-01-08 22:34:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-08 22:34:34,832 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:34,832 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:34,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-08 22:34:35,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:35,034 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:35,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:35,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1100370573, now seen corresponding path program 3 times [2025-01-08 22:34:35,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:35,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340579442] [2025-01-08 22:34:35,035 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:34:35,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:35,057 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 6 equivalence classes. [2025-01-08 22:34:35,180 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:34:35,180 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:34:35,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-01-08 22:34:35,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340579442] [2025-01-08 22:34:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340579442] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:34:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633943367] [2025-01-08 22:34:35,508 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:34:35,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:35,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:35,510 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) [2025-01-08 22:34:35,513 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 [2025-01-08 22:34:35,570 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 6 equivalence classes. [2025-01-08 22:34:35,658 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:34:35,659 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:34:35,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:35,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-08 22:34:35,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:34:35,897 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-01-08 22:34:35,897 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:34:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2025-01-08 22:34:36,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633943367] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:34:36,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:34:36,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2025-01-08 22:34:36,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378440676] [2025-01-08 22:34:36,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:34:36,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-08 22:34:36,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:34:36,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-08 22:34:36,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2025-01-08 22:34:36,169 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 36 states have internal predecessors, (46), 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) [2025-01-08 22:34:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:34:36,584 INFO L93 Difference]: Finished difference Result 99 states and 138 transitions. [2025-01-08 22:34:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-08 22:34:36,584 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 36 states have internal predecessors, (46), 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) Word has length 37 [2025-01-08 22:34:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:34:36,585 INFO L225 Difference]: With dead ends: 99 [2025-01-08 22:34:36,585 INFO L226 Difference]: Without dead ends: 74 [2025-01-08 22:34:36,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2025-01-08 22:34:36,588 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 40 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:34:36,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 9 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:34:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-01-08 22:34:36,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2025-01-08 22:34:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 73 states have internal predecessors, (76), 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) [2025-01-08 22:34:36,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2025-01-08 22:34:36,605 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 37 [2025-01-08 22:34:36,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:34:36,605 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2025-01-08 22:34:36,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 36 states have internal predecessors, (46), 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) [2025-01-08 22:34:36,605 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2025-01-08 22:34:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-08 22:34:36,609 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:34:36,609 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:34:36,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-08 22:34:36,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:36,810 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:34:36,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:34:36,810 INFO L85 PathProgramCache]: Analyzing trace with hash -709112819, now seen corresponding path program 4 times [2025-01-08 22:34:36,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:34:36,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179140571] [2025-01-08 22:34:36,810 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:34:36,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:34:36,835 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 73 statements into 2 equivalence classes. [2025-01-08 22:34:37,419 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:34:37,420 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:34:37,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:34:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2025-01-08 22:34:38,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:34:38,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179140571] [2025-01-08 22:34:38,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179140571] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:34:38,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317172286] [2025-01-08 22:34:38,276 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:34:38,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:34:38,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:34:38,279 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) [2025-01-08 22:34:38,281 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 [2025-01-08 22:34:38,368 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 73 statements into 2 equivalence classes. [2025-01-08 22:35:02,838 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:35:02,838 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:35:02,838 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:02,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-08 22:35:02,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2025-01-08 22:35:03,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2025-01-08 22:35:04,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317172286] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:04,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:04,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 72 [2025-01-08 22:35:04,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694746843] [2025-01-08 22:35:04,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:04,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-01-08 22:35:04,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:04,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-01-08 22:35:04,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=2973, Unknown=0, NotChecked=0, Total=5256 [2025-01-08 22:35:04,175 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 73 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 72 states have internal predecessors, (82), 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) [2025-01-08 22:35:05,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:05,227 INFO L93 Difference]: Finished difference Result 195 states and 270 transitions. [2025-01-08 22:35:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-01-08 22:35:05,228 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 72 states have internal predecessors, (82), 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) Word has length 73 [2025-01-08 22:35:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:05,229 INFO L225 Difference]: With dead ends: 195 [2025-01-08 22:35:05,229 INFO L226 Difference]: Without dead ends: 146 [2025-01-08 22:35:05,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3433, Invalid=5687, Unknown=0, NotChecked=0, Total=9120 [2025-01-08 22:35:05,234 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 110 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:05,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 11 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:35:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-01-08 22:35:05,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2025-01-08 22:35:05,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.0206896551724138) internal successors, (148), 145 states have internal predecessors, (148), 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) [2025-01-08 22:35:05,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2025-01-08 22:35:05,249 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 73 [2025-01-08 22:35:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:05,250 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2025-01-08 22:35:05,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 72 states have internal predecessors, (82), 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) [2025-01-08 22:35:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2025-01-08 22:35:05,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2025-01-08 22:35:05,255 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:05,255 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:05,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-08 22:35:05,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:05,455 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:05,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:05,456 INFO L85 PathProgramCache]: Analyzing trace with hash 83525389, now seen corresponding path program 5 times [2025-01-08 22:35:05,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:05,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506619299] [2025-01-08 22:35:05,456 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:35:05,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:05,494 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 145 statements into 24 equivalence classes. [2025-01-08 22:35:07,397 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) and asserted 145 of 145 statements. [2025-01-08 22:35:07,398 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2025-01-08 22:35:07,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:10,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2025-01-08 22:35:10,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:10,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506619299] [2025-01-08 22:35:10,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506619299] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:10,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121031722] [2025-01-08 22:35:10,015 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:35:10,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:10,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:10,018 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) [2025-01-08 22:35:10,020 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 [2025-01-08 22:35:10,126 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 145 statements into 24 equivalence classes.