./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/bor2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-crafted/bor2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a66d4c531614f6a758ec8a672ead44330d05e74c75b0a444a0f213a0e825065 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:22:33,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:22:33,634 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:22:33,639 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:22:33,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:22:33,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:22:33,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:22:33,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:22:33,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:22:33,674 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:22:33,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:22:33,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:22:33,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:22:33,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:22:33,675 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:22:33,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:22:33,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:22:33,676 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:22:33,676 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:22:33,676 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:22:33,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:22:33,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:22:33,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:22:33,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:22:33,677 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:22:33,677 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:22:33,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:22:33,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:22:33,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:22:33,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:22:33,679 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:22:33,679 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:22:33,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:22:33,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:22:33,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:22:33,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:22:33,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:22:33,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:22:33,680 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 -> 5a66d4c531614f6a758ec8a672ead44330d05e74c75b0a444a0f213a0e825065 [2025-01-08 22:22:33,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:22:33,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:22:33,952 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:22:33,953 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:22:33,953 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:22:33,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/bor2.i [2025-01-08 22:22:35,231 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a28a48b67/7f4382143b644311ae8bc8627d4af5fc/FLAG17416dcf4 [2025-01-08 22:22:35,480 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:22:35,484 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/bor2.i [2025-01-08 22:22:35,509 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a28a48b67/7f4382143b644311ae8bc8627d4af5fc/FLAG17416dcf4 [2025-01-08 22:22:35,794 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a28a48b67/7f4382143b644311ae8bc8627d4af5fc [2025-01-08 22:22:35,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:22:35,799 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:22:35,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:22:35,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:22:35,804 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:22:35,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:22:35" (1/1) ... [2025-01-08 22:22:35,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e96397f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:35, skipping insertion in model container [2025-01-08 22:22:35,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:22:35" (1/1) ... [2025-01-08 22:22:35,821 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:22:35,975 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-crafted/bor2.i[1291,1304] [2025-01-08 22:22:35,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:22:35,991 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:22:36,013 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-crafted/bor2.i[1291,1304] [2025-01-08 22:22:36,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:22:36,031 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:22:36,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36 WrapperNode [2025-01-08 22:22:36,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:22:36,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:22:36,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:22:36,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:22:36,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,069 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2025-01-08 22:22:36,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:22:36,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:22:36,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:22:36,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:22:36,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,100 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 11, 7]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 7]. The 5 writes are split as follows [0, 5, 0]. [2025-01-08 22:22:36,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,102 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,108 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,116 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,118 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,122 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:22:36,123 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:22:36,126 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:22:36,126 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:22:36,127 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (1/1) ... [2025-01-08 22:22:36,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:22:36,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:36,156 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 22:22:36,159 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 22:22:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:22:36,183 INFO L130 BoogieDeclarations]: Found specification of procedure bor [2025-01-08 22:22:36,184 INFO L138 BoogieDeclarations]: Found implementation of procedure bor [2025-01-08 22:22:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:22:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:22:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:22:36,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:22:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:22:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:22:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:22:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:22:36,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:22:36,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:22:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:22:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:22:36,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:22:36,267 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:22:36,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:22:36,433 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2025-01-08 22:22:36,433 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:22:36,443 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:22:36,443 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:22:36,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:22:36 BoogieIcfgContainer [2025-01-08 22:22:36,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:22:36,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:22:36,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:22:36,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:22:36,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:22:35" (1/3) ... [2025-01-08 22:22:36,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b256989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:22:36, skipping insertion in model container [2025-01-08 22:22:36,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:22:36" (2/3) ... [2025-01-08 22:22:36,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b256989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:22:36, skipping insertion in model container [2025-01-08 22:22:36,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:22:36" (3/3) ... [2025-01-08 22:22:36,454 INFO L128 eAbstractionObserver]: Analyzing ICFG bor2.i [2025-01-08 22:22:36,468 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:22:36,469 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bor2.i that has 2 procedures, 25 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:22:36,521 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:22:36,533 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;@30cef653, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:22:36,534 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:22:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:36,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:22:36,546 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:36,546 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:36,547 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:36,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:36,552 INFO L85 PathProgramCache]: Analyzing trace with hash -546133665, now seen corresponding path program 1 times [2025-01-08 22:22:36,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:36,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425421606] [2025-01-08 22:22:36,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:22:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:36,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:22:36,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:22:36,641 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:22:36,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:22:36,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:36,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425421606] [2025-01-08 22:22:36,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425421606] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:22:36,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:22:36,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:22:36,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504790706] [2025-01-08 22:22:36,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:22:36,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:22:36,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:36,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:22:36,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:22:36,840 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:22:36,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:36,867 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2025-01-08 22:22:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:22:36,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2025-01-08 22:22:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:36,873 INFO L225 Difference]: With dead ends: 48 [2025-01-08 22:22:36,873 INFO L226 Difference]: Without dead ends: 22 [2025-01-08 22:22:36,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:22:36,878 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:36,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-08 22:22:36,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-08 22:22:36,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:36,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2025-01-08 22:22:36,906 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 24 [2025-01-08 22:22:36,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:36,908 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2025-01-08 22:22:36,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2025-01-08 22:22:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2025-01-08 22:22:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-08 22:22:36,910 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:36,911 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:36,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:22:36,911 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:36,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1440449364, now seen corresponding path program 1 times [2025-01-08 22:22:36,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:36,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394414483] [2025-01-08 22:22:36,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:22:36,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:36,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-08 22:22:36,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:22:36,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:22:36,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:22:37,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:37,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394414483] [2025-01-08 22:22:37,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394414483] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:37,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489326424] [2025-01-08 22:22:37,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:22:37,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:37,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:37,083 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 22:22:37,084 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 22:22:37,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-08 22:22:37,175 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:22:37,175 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:22:37,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:37,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-08 22:22:37,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:22:37,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:22:37,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489326424] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:22:37,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:22:37,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-08 22:22:37,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791098737] [2025-01-08 22:22:37,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:22:37,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:22:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:37,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:22:37,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:22:37,216 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:22:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:37,229 INFO L93 Difference]: Finished difference Result 44 states and 60 transitions. [2025-01-08 22:22:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:22:37,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2025-01-08 22:22:37,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:37,231 INFO L225 Difference]: With dead ends: 44 [2025-01-08 22:22:37,231 INFO L226 Difference]: Without dead ends: 27 [2025-01-08 22:22:37,231 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:22:37,232 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:37,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:37,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-08 22:22:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2025-01-08 22:22:37,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:37,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2025-01-08 22:22:37,237 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 25 [2025-01-08 22:22:37,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:37,237 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2025-01-08 22:22:37,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:22:37,237 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2025-01-08 22:22:37,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-08 22:22:37,238 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:37,238 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:37,246 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 22:22:37,443 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 22:22:37,443 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:37,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:37,444 INFO L85 PathProgramCache]: Analyzing trace with hash -69766664, now seen corresponding path program 1 times [2025-01-08 22:22:37,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:37,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758661783] [2025-01-08 22:22:37,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:22:37,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:37,460 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-08 22:22:37,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:22:37,476 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:22:37,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:37,585 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-01-08 22:22:37,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:37,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758661783] [2025-01-08 22:22:37,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758661783] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:37,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286287814] [2025-01-08 22:22:37,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:22:37,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:37,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:37,589 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 22:22:37,592 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 22:22:37,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-08 22:22:37,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:22:37,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:22:37,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:37,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-01-08 22:22:37,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-08 22:22:37,691 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-08 22:22:37,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286287814] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:22:37,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-08 22:22:37,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-01-08 22:22:37,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293596559] [2025-01-08 22:22:37,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:22:37,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:22:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:37,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:22:37,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:22:37,693 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:22:37,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:37,702 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2025-01-08 22:22:37,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:22:37,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2025-01-08 22:22:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:37,704 INFO L225 Difference]: With dead ends: 38 [2025-01-08 22:22:37,704 INFO L226 Difference]: Without dead ends: 24 [2025-01-08 22:22:37,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-01-08 22:22:37,704 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:37,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-08 22:22:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-08 22:22:37,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:37,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2025-01-08 22:22:37,710 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 34 [2025-01-08 22:22:37,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:37,712 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2025-01-08 22:22:37,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-08 22:22:37,712 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2025-01-08 22:22:37,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-08 22:22:37,714 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:37,714 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:37,722 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 [2025-01-08 22:22:37,914 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 22:22:37,915 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:37,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:37,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1051433169, now seen corresponding path program 1 times [2025-01-08 22:22:37,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:37,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422664571] [2025-01-08 22:22:37,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:22:37,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:37,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-08 22:22:37,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-08 22:22:37,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:22:37,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-08 22:22:38,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:38,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422664571] [2025-01-08 22:22:38,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422664571] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:38,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761640978] [2025-01-08 22:22:38,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:22:38,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:38,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:38,034 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 22:22:38,037 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 22:22:38,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-01-08 22:22:38,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-01-08 22:22:38,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:22:38,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:38,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:22:38,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:38,151 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-08 22:22:38,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-08 22:22:38,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761640978] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:38,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:38,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:22:38,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572935669] [2025-01-08 22:22:38,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:38,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:22:38,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:38,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:22:38,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:22:38,194 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:22:38,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:38,208 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2025-01-08 22:22:38,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:22:38,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 35 [2025-01-08 22:22:38,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:38,209 INFO L225 Difference]: With dead ends: 47 [2025-01-08 22:22:38,209 INFO L226 Difference]: Without dead ends: 27 [2025-01-08 22:22:38,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:22:38,210 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:38,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:38,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-08 22:22:38,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-01-08 22:22:38,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:38,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2025-01-08 22:22:38,214 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 35 [2025-01-08 22:22:38,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:38,215 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2025-01-08 22:22:38,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:22:38,215 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2025-01-08 22:22:38,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:22:38,216 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:38,216 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:38,226 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 22:22:38,423 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 22:22:38,423 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:38,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:38,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1982824634, now seen corresponding path program 2 times [2025-01-08 22:22:38,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:38,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092703015] [2025-01-08 22:22:38,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:22:38,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:38,436 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:22:38,449 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:22:38,453 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:22:38,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:38,545 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:22:38,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092703015] [2025-01-08 22:22:38,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092703015] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:38,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560428311] [2025-01-08 22:22:38,546 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:22:38,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:38,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:38,548 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 22:22:38,550 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 22:22:38,608 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:22:38,655 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:22:38,656 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:22:38,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:38,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:22:38,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-08 22:22:38,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:38,815 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2025-01-08 22:22:38,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560428311] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:38,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:38,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-01-08 22:22:38,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886503775] [2025-01-08 22:22:38,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:38,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:22:38,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:38,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:22:38,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:22:38,817 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-08 22:22:38,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:38,859 INFO L93 Difference]: Finished difference Result 62 states and 87 transitions. [2025-01-08 22:22:38,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:22:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 38 [2025-01-08 22:22:38,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:38,861 INFO L225 Difference]: With dead ends: 62 [2025-01-08 22:22:38,861 INFO L226 Difference]: Without dead ends: 42 [2025-01-08 22:22:38,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:22:38,864 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 10 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:38,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 112 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:38,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-01-08 22:22:38,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2025-01-08 22:22:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2025-01-08 22:22:38,869 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 38 [2025-01-08 22:22:38,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:38,870 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2025-01-08 22:22:38,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-08 22:22:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2025-01-08 22:22:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-01-08 22:22:38,871 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:38,871 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:38,877 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 22:22:39,071 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 22:22:39,072 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:39,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1357434506, now seen corresponding path program 3 times [2025-01-08 22:22:39,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:39,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445058424] [2025-01-08 22:22:39,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:22:39,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:39,091 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 6 equivalence classes. [2025-01-08 22:22:39,113 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 32 of 53 statements. [2025-01-08 22:22:39,114 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:22:39,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-01-08 22:22:39,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:39,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445058424] [2025-01-08 22:22:39,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445058424] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:39,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105628469] [2025-01-08 22:22:39,169 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:22:39,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:39,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:39,171 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 22:22:39,174 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 22:22:39,241 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 53 statements into 6 equivalence classes. [2025-01-08 22:22:39,268 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 32 of 53 statements. [2025-01-08 22:22:39,268 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:22:39,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:39,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:22:39,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:22:39,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2025-01-08 22:22:39,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105628469] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:39,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:39,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:22:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583686310] [2025-01-08 22:22:39,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:39,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:22:39,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:39,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:22:39,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:22:39,320 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:22:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:39,339 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2025-01-08 22:22:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:22:39,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2025-01-08 22:22:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:39,341 INFO L225 Difference]: With dead ends: 60 [2025-01-08 22:22:39,342 INFO L226 Difference]: Without dead ends: 41 [2025-01-08 22:22:39,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:22:39,343 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:39,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-08 22:22:39,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-01-08 22:22:39,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:39,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2025-01-08 22:22:39,354 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 53 [2025-01-08 22:22:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:39,354 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2025-01-08 22:22:39,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:22:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2025-01-08 22:22:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-01-08 22:22:39,356 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:39,356 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:39,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-08 22:22:39,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:39,560 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:39,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:39,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1787505025, now seen corresponding path program 4 times [2025-01-08 22:22:39,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:39,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793162795] [2025-01-08 22:22:39,561 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:22:39,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:39,576 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-01-08 22:22:39,587 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-01-08 22:22:39,587 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:22:39,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-01-08 22:22:39,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:39,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793162795] [2025-01-08 22:22:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793162795] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:39,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686552941] [2025-01-08 22:22:39,678 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:22:39,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:39,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:39,682 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) [2025-01-08 22:22:39,684 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 [2025-01-08 22:22:39,752 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-01-08 22:22:39,796 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-01-08 22:22:39,796 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:22:39,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:39,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:22:39,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-01-08 22:22:39,815 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-01-08 22:22:39,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686552941] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:39,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:39,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-08 22:22:39,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506787309] [2025-01-08 22:22:39,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:39,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-08 22:22:39,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:39,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-08 22:22:39,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:22:39,865 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:22:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:39,898 INFO L93 Difference]: Finished difference Result 88 states and 117 transitions. [2025-01-08 22:22:39,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:22:39,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 56 [2025-01-08 22:22:39,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:39,903 INFO L225 Difference]: With dead ends: 88 [2025-01-08 22:22:39,903 INFO L226 Difference]: Without dead ends: 61 [2025-01-08 22:22:39,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:22:39,904 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 40 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:39,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 104 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:39,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-08 22:22:39,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-01-08 22:22:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2025-01-08 22:22:39,913 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 56 [2025-01-08 22:22:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:39,914 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2025-01-08 22:22:39,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:22:39,914 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2025-01-08 22:22:39,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-01-08 22:22:39,915 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:39,915 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:39,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-08 22:22:40,116 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,SelfDestructingSolverStorable6 [2025-01-08 22:22:40,116 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:40,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:40,117 INFO L85 PathProgramCache]: Analyzing trace with hash 842203903, now seen corresponding path program 5 times [2025-01-08 22:22:40,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:40,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583092095] [2025-01-08 22:22:40,117 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:22:40,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:40,142 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 92 statements into 14 equivalence classes. [2025-01-08 22:22:40,222 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 81 of 92 statements. [2025-01-08 22:22:40,223 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-08 22:22:40,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 123 proven. 174 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-01-08 22:22:40,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:40,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583092095] [2025-01-08 22:22:40,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583092095] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:40,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851121821] [2025-01-08 22:22:40,411 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:22:40,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:40,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:40,415 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) [2025-01-08 22:22:40,424 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 [2025-01-08 22:22:40,509 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 92 statements into 14 equivalence classes. [2025-01-08 22:22:40,837 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 81 of 92 statements. [2025-01-08 22:22:40,837 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-08 22:22:40,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:40,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:22:40,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 244 proven. 51 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2025-01-08 22:22:40,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2025-01-08 22:22:41,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851121821] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:41,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:41,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-01-08 22:22:41,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038977017] [2025-01-08 22:22:41,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:41,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-08 22:22:41,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:41,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-08 22:22:41,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:22:41,039 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-08 22:22:41,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:41,110 INFO L93 Difference]: Finished difference Result 148 states and 205 transitions. [2025-01-08 22:22:41,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:22:41,111 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 92 [2025-01-08 22:22:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:41,113 INFO L225 Difference]: With dead ends: 148 [2025-01-08 22:22:41,113 INFO L226 Difference]: Without dead ends: 101 [2025-01-08 22:22:41,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:22:41,114 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 184 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:41,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 126 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:41,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-01-08 22:22:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2025-01-08 22:22:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 96 states have (on average 1.3229166666666667) internal successors, (127), 96 states have internal predecessors, (127), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2025-01-08 22:22:41,130 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 92 [2025-01-08 22:22:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:41,130 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2025-01-08 22:22:41,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-01-08 22:22:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2025-01-08 22:22:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-01-08 22:22:41,133 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:41,133 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 10, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:41,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-08 22:22:41,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:41,334 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:41,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1619584001, now seen corresponding path program 6 times [2025-01-08 22:22:41,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:41,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100453620] [2025-01-08 22:22:41,335 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:22:41,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:41,357 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 164 statements into 30 equivalence classes. [2025-01-08 22:22:41,401 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 52 of 164 statements. [2025-01-08 22:22:41,401 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:22:41,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-01-08 22:22:41,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:41,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100453620] [2025-01-08 22:22:41,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100453620] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:41,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728918321] [2025-01-08 22:22:41,553 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:22:41,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:41,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:41,556 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) [2025-01-08 22:22:41,558 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 [2025-01-08 22:22:41,642 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 164 statements into 30 equivalence classes. [2025-01-08 22:22:41,798 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 52 of 164 statements. [2025-01-08 22:22:41,798 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:22:41,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:41,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-08 22:22:41,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 1250 proven. 10 refuted. 0 times theorem prover too weak. 1526 trivial. 0 not checked. [2025-01-08 22:22:41,856 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-01-08 22:22:41,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728918321] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:41,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:41,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2025-01-08 22:22:41,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38117484] [2025-01-08 22:22:41,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:41,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-08 22:22:41,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:41,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-08 22:22:41,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=118, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:22:41,936 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:22:41,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:41,968 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2025-01-08 22:22:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:22:41,968 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 164 [2025-01-08 22:22:41,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:41,970 INFO L225 Difference]: With dead ends: 186 [2025-01-08 22:22:41,970 INFO L226 Difference]: Without dead ends: 107 [2025-01-08 22:22:41,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 319 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=118, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:22:41,971 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:41,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-01-08 22:22:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2025-01-08 22:22:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 102 states have (on average 1.303921568627451) internal successors, (133), 102 states have internal predecessors, (133), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 139 transitions. [2025-01-08 22:22:41,989 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 139 transitions. Word has length 164 [2025-01-08 22:22:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:41,989 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 139 transitions. [2025-01-08 22:22:41,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:22:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 139 transitions. [2025-01-08 22:22:41,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-01-08 22:22:41,994 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:41,994 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 10, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:42,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-08 22:22:42,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:42,195 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:42,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash 810973343, now seen corresponding path program 7 times [2025-01-08 22:22:42,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:42,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747355911] [2025-01-08 22:22:42,196 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:22:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:42,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-01-08 22:22:42,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-01-08 22:22:42,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:22:42,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2831 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-01-08 22:22:42,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747355911] [2025-01-08 22:22:42,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747355911] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573043825] [2025-01-08 22:22:42,676 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:22:42,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:42,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:42,680 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) [2025-01-08 22:22:42,682 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 [2025-01-08 22:22:42,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-01-08 22:22:42,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-01-08 22:22:42,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:22:42,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:42,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:22:42,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:42,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2831 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-01-08 22:22:42,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2831 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-01-08 22:22:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573043825] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:43,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:43,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-01-08 22:22:43,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516559731] [2025-01-08 22:22:43,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:43,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:22:43,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:43,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:22:43,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:22:43,140 INFO L87 Difference]: Start difference. First operand 107 states and 139 transitions. Second operand has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:22:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:43,167 INFO L93 Difference]: Finished difference Result 213 states and 288 transitions. [2025-01-08 22:22:43,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-08 22:22:43,167 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 170 [2025-01-08 22:22:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:43,168 INFO L225 Difference]: With dead ends: 213 [2025-01-08 22:22:43,169 INFO L226 Difference]: Without dead ends: 119 [2025-01-08 22:22:43,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:22:43,170 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:43,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 98 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-01-08 22:22:43,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2025-01-08 22:22:43,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.2719298245614035) internal successors, (145), 114 states have internal predecessors, (145), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:43,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 151 transitions. [2025-01-08 22:22:43,179 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 151 transitions. Word has length 170 [2025-01-08 22:22:43,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:43,179 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 151 transitions. [2025-01-08 22:22:43,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.84) internal successors, (46), 25 states have internal predecessors, (46), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:22:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 151 transitions. [2025-01-08 22:22:43,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2025-01-08 22:22:43,181 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:43,181 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 42, 22, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:43,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-08 22:22:43,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:43,382 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:43,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:43,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1431820193, now seen corresponding path program 8 times [2025-01-08 22:22:43,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:43,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339736444] [2025-01-08 22:22:43,383 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:22:43,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:43,418 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 182 statements into 2 equivalence classes. [2025-01-08 22:22:43,461 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 182 of 182 statements. [2025-01-08 22:22:43,461 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:22:43,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-01-08 22:22:44,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:44,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339736444] [2025-01-08 22:22:44,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339736444] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:44,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809601278] [2025-01-08 22:22:44,419 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:22:44,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:44,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:44,422 INFO L229 MonitoredProcess]: Starting monitored process 11 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 22:22:44,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-08 22:22:44,531 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 182 statements into 2 equivalence classes. [2025-01-08 22:22:44,635 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 182 of 182 statements. [2025-01-08 22:22:44,635 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:22:44,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:44,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-08 22:22:44,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-01-08 22:22:44,701 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3029 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2776 trivial. 0 not checked. [2025-01-08 22:22:45,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809601278] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:45,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:45,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-01-08 22:22:45,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194178325] [2025-01-08 22:22:45,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:45,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-08 22:22:45,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:45,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-08 22:22:45,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:22:45,502 INFO L87 Difference]: Start difference. First operand 119 states and 151 transitions. Second operand has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:22:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:45,577 INFO L93 Difference]: Finished difference Result 237 states and 324 transitions. [2025-01-08 22:22:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-08 22:22:45,578 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 182 [2025-01-08 22:22:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:45,579 INFO L225 Difference]: With dead ends: 237 [2025-01-08 22:22:45,581 INFO L226 Difference]: Without dead ends: 143 [2025-01-08 22:22:45,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:22:45,584 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:45,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:22:45,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-01-08 22:22:45,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2025-01-08 22:22:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 138 states have (on average 1.2246376811594204) internal successors, (169), 138 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 175 transitions. [2025-01-08 22:22:45,599 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 175 transitions. Word has length 182 [2025-01-08 22:22:45,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:45,599 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 175 transitions. [2025-01-08 22:22:45,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2025-01-08 22:22:45,600 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 175 transitions. [2025-01-08 22:22:45,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-01-08 22:22:45,601 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:45,601 INFO L218 NwaCegarLoop]: trace histogram [46, 42, 42, 42, 10, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:45,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-08 22:22:45,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:45,802 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:45,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:45,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1486968865, now seen corresponding path program 9 times [2025-01-08 22:22:45,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:45,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903037829] [2025-01-08 22:22:45,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:22:45,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:45,839 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 206 statements into 30 equivalence classes. [2025-01-08 22:22:45,899 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 73 of 206 statements. [2025-01-08 22:22:45,902 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:22:45,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:46,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3802 trivial. 0 not checked. [2025-01-08 22:22:46,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:46,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903037829] [2025-01-08 22:22:46,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903037829] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:46,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471603714] [2025-01-08 22:22:46,198 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:22:46,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:46,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:46,201 INFO L229 MonitoredProcess]: Starting monitored process 12 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 22:22:46,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-08 22:22:46,341 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 206 statements into 30 equivalence classes. [2025-01-08 22:22:47,055 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 73 of 206 statements. [2025-01-08 22:22:47,055 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:22:47,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:47,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-08 22:22:47,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 1240 proven. 55 refuted. 0 times theorem prover too weak. 2562 trivial. 0 not checked. [2025-01-08 22:22:47,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3857 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3802 trivial. 0 not checked. [2025-01-08 22:22:47,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471603714] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:47,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:47,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2025-01-08 22:22:47,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419117623] [2025-01-08 22:22:47,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:47,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-08 22:22:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:47,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-08 22:22:47,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:22:47,385 INFO L87 Difference]: Start difference. First operand 143 states and 175 transitions. Second operand has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:22:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:47,423 INFO L93 Difference]: Finished difference Result 234 states and 306 transitions. [2025-01-08 22:22:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-08 22:22:47,424 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 206 [2025-01-08 22:22:47,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:47,426 INFO L225 Difference]: With dead ends: 234 [2025-01-08 22:22:47,426 INFO L226 Difference]: Without dead ends: 155 [2025-01-08 22:22:47,427 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=326, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:22:47,427 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:47,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:22:47,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-01-08 22:22:47,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2025-01-08 22:22:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.2066666666666668) internal successors, (181), 150 states have internal predecessors, (181), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 187 transitions. [2025-01-08 22:22:47,439 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 187 transitions. Word has length 206 [2025-01-08 22:22:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:47,440 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 187 transitions. [2025-01-08 22:22:47,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.8461538461538463) internal successors, (48), 26 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-01-08 22:22:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 187 transitions. [2025-01-08 22:22:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2025-01-08 22:22:47,442 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:47,442 INFO L218 NwaCegarLoop]: trace histogram [46, 42, 42, 42, 22, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:47,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-08 22:22:47,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-08 22:22:47,643 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:47,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:47,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1740282143, now seen corresponding path program 10 times [2025-01-08 22:22:47,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:47,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339911868] [2025-01-08 22:22:47,644 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:22:47,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:47,693 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 218 statements into 2 equivalence classes. [2025-01-08 22:22:47,729 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 218 of 218 statements. [2025-01-08 22:22:47,730 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:22:47,730 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4055 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2025-01-08 22:22:48,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339911868] [2025-01-08 22:22:48,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339911868] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378172874] [2025-01-08 22:22:48,352 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:22:48,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:48,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:48,355 INFO L229 MonitoredProcess]: Starting monitored process 13 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 22:22:48,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-08 22:22:48,504 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 218 statements into 2 equivalence classes. [2025-01-08 22:22:48,641 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 218 of 218 statements. [2025-01-08 22:22:48,641 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:22:48,641 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:48,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-08 22:22:48,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:22:48,725 INFO L134 CoverageAnalysis]: Checked inductivity of 4055 backedges. 1236 proven. 287 refuted. 0 times theorem prover too weak. 2532 trivial. 0 not checked. [2025-01-08 22:22:48,726 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:22:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4055 backedges. 0 proven. 1525 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2025-01-08 22:22:49,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378172874] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:22:49,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:22:49,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2025-01-08 22:22:49,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573377615] [2025-01-08 22:22:49,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:22:49,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-08 22:22:49,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:22:49,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-08 22:22:49,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-01-08 22:22:49,157 INFO L87 Difference]: Start difference. First operand 155 states and 187 transitions. Second operand has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:22:49,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:22:49,284 INFO L93 Difference]: Finished difference Result 340 states and 453 transitions. [2025-01-08 22:22:49,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-08 22:22:49,285 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 218 [2025-01-08 22:22:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:22:49,287 INFO L225 Difference]: With dead ends: 340 [2025-01-08 22:22:49,287 INFO L226 Difference]: Without dead ends: 235 [2025-01-08 22:22:49,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-01-08 22:22:49,290 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 356 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:22:49,291 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 278 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:22:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2025-01-08 22:22:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 235. [2025-01-08 22:22:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 230 states have (on average 1.2739130434782608) internal successors, (293), 230 states have internal predecessors, (293), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-01-08 22:22:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 299 transitions. [2025-01-08 22:22:49,307 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 299 transitions. Word has length 218 [2025-01-08 22:22:49,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:22:49,307 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 299 transitions. [2025-01-08 22:22:49,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2025-01-08 22:22:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 299 transitions. [2025-01-08 22:22:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2025-01-08 22:22:49,311 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:22:49,312 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 90, 46, 22, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:22:49,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-08 22:22:49,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:49,513 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:22:49,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:22:49,513 INFO L85 PathProgramCache]: Analyzing trace with hash 938183455, now seen corresponding path program 11 times [2025-01-08 22:22:49,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:22:49,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471089267] [2025-01-08 22:22:49,513 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:22:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:22:49,559 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 362 statements into 62 equivalence classes. [2025-01-08 22:22:50,495 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) and asserted 351 of 362 statements. [2025-01-08 22:22:50,496 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2025-01-08 22:22:50,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:22:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13631 backedges. 2763 proven. 4098 refuted. 0 times theorem prover too weak. 6770 trivial. 0 not checked. [2025-01-08 22:22:51,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:22:51,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471089267] [2025-01-08 22:22:51,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471089267] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:22:51,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201144762] [2025-01-08 22:22:51,929 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:22:51,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:22:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:22:51,932 INFO L229 MonitoredProcess]: Starting monitored process 14 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 22:22:51,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-08 22:22:52,130 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 362 statements into 62 equivalence classes.