./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_mul_init.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-industry-pattern/array_mul_init.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 09dc663f7f76eee13b6af61297831e3fbddcb16c16389bf8d94f2d27048733d0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:11:25,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:11:25,753 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:11:25,757 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:11:25,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:11:25,779 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:11:25,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:11:25,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:11:25,781 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:11:25,782 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:11:25,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:11:25,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:11:25,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:11:25,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:11:25,783 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:11:25,783 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:11:25,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:11:25,783 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:11:25,784 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:11:25,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:11:25,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:11:25,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:11:25,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:11:25,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:11:25,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:11:25,785 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:11:25,785 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:11:25,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:11:25,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:11:25,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:11:25,786 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:11:25,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:11:25,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:11:25,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:11:25,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:11:25,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:11:25,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:11:25,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:11:25,786 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 -> 09dc663f7f76eee13b6af61297831e3fbddcb16c16389bf8d94f2d27048733d0 [2025-01-08 22:11:26,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:11:26,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:11:26,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:11:26,020 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:11:26,020 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:11:26,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_mul_init.i [2025-01-08 22:11:27,237 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/52bc4d50c/247c49b48a814c92ad2744ccd84bbd95/FLAG016cad271 [2025-01-08 22:11:27,464 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:11:27,464 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_mul_init.i [2025-01-08 22:11:27,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/52bc4d50c/247c49b48a814c92ad2744ccd84bbd95/FLAG016cad271 [2025-01-08 22:11:27,799 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/52bc4d50c/247c49b48a814c92ad2744ccd84bbd95 [2025-01-08 22:11:27,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:11:27,802 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:11:27,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:11:27,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:11:27,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:11:27,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f1a273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27, skipping insertion in model container [2025-01-08 22:11:27,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,820 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:11:27,894 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-industry-pattern/array_mul_init.i[807,820] [2025-01-08 22:11:27,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:11:27,907 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:11:27,913 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-industry-pattern/array_mul_init.i[807,820] [2025-01-08 22:11:27,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:11:27,925 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:11:27,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27 WrapperNode [2025-01-08 22:11:27,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:11:27,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:11:27,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:11:27,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:11:27,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,943 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2025-01-08 22:11:27,943 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:11:27,944 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:11:27,944 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:11:27,944 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:11:27,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,958 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 4, 5]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2025-01-08 22:11:27,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,961 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:11:27,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:11:27,967 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:11:27,967 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:11:27,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (1/1) ... [2025-01-08 22:11:27,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:11:27,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:27,993 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 22:11:28,002 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 22:11:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:11:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:11:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:11:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:11:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:11:28,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:11:28,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:11:28,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:11:28,080 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:11:28,081 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:11:28,188 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-01-08 22:11:28,188 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:11:28,195 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:11:28,197 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:11:28,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:11:28 BoogieIcfgContainer [2025-01-08 22:11:28,197 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:11:28,199 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:11:28,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:11:28,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:11:28,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:11:27" (1/3) ... [2025-01-08 22:11:28,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9dc72df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:11:28, skipping insertion in model container [2025-01-08 22:11:28,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:11:27" (2/3) ... [2025-01-08 22:11:28,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9dc72df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:11:28, skipping insertion in model container [2025-01-08 22:11:28,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:11:28" (3/3) ... [2025-01-08 22:11:28,205 INFO L128 eAbstractionObserver]: Analyzing ICFG array_mul_init.i [2025-01-08 22:11:28,216 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:11:28,218 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_mul_init.i that has 1 procedures, 16 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:11:28,257 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:11:28,267 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;@21ba0a22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:11:28,267 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:11:28,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-08 22:11:28,273 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:28,274 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:28,274 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:28,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1870599057, now seen corresponding path program 1 times [2025-01-08 22:11:28,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:28,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806124482] [2025-01-08 22:11:28,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:28,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-08 22:11:28,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-08 22:11:28,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:28,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:11:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:28,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806124482] [2025-01-08 22:11:28,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806124482] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:11:28,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:11:28,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:11:28,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308063015] [2025-01-08 22:11:28,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:11:28,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:11:28,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:28,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:11:28,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:11:28,436 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:28,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:28,477 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2025-01-08 22:11:28,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:11:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-08 22:11:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:28,483 INFO L225 Difference]: With dead ends: 40 [2025-01-08 22:11:28,483 INFO L226 Difference]: Without dead ends: 24 [2025-01-08 22:11:28,485 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 22:11:28,486 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:28,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:28,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-08 22:11:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2025-01-08 22:11:28,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:28,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2025-01-08 22:11:28,508 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2025-01-08 22:11:28,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:28,508 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2025-01-08 22:11:28,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:28,509 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2025-01-08 22:11:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:11:28,509 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:28,509 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:28,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:11:28,509 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:28,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:28,510 INFO L85 PathProgramCache]: Analyzing trace with hash -60052973, now seen corresponding path program 1 times [2025-01-08 22:11:28,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:28,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379710833] [2025-01-08 22:11:28,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:28,519 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:11:28,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:11:28,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:28,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:11:28,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:28,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379710833] [2025-01-08 22:11:28,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379710833] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:28,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093539363] [2025-01-08 22:11:28,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:28,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:28,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:28,595 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 22:11:28,597 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 22:11:28,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:11:28,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:11:28,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:28,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:28,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:11:28,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:28,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:11:28,673 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:28,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:11:28,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093539363] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:28,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:28,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:11:28,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605811596] [2025-01-08 22:11:28,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:28,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:11:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:28,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:11:28,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:11:28,695 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:28,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:28,748 INFO L93 Difference]: Finished difference Result 60 states and 79 transitions. [2025-01-08 22:11:28,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:11:28,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-08 22:11:28,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:28,749 INFO L225 Difference]: With dead ends: 60 [2025-01-08 22:11:28,750 INFO L226 Difference]: Without dead ends: 49 [2025-01-08 22:11:28,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 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 22:11:28,750 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 50 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:28,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 32 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:28,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-01-08 22:11:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2025-01-08 22:11:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:28,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2025-01-08 22:11:28,754 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 13 [2025-01-08 22:11:28,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:28,754 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2025-01-08 22:11:28,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2025-01-08 22:11:28,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-08 22:11:28,755 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:28,755 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:28,761 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 22:11:28,959 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 22:11:28,959 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:28,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:28,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1962621073, now seen corresponding path program 2 times [2025-01-08 22:11:28,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:28,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129656970] [2025-01-08 22:11:28,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:11:28,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:28,974 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 25 statements into 2 equivalence classes. [2025-01-08 22:11:28,979 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 25 statements. [2025-01-08 22:11:28,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-08 22:11:28,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2025-01-08 22:11:29,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:29,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129656970] [2025-01-08 22:11:29,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129656970] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:11:29,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:11:29,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:11:29,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923191698] [2025-01-08 22:11:29,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:11:29,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:11:29,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:29,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:11:29,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:11:29,047 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:29,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:29,058 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2025-01-08 22:11:29,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:11:29,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-08 22:11:29,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:29,059 INFO L225 Difference]: With dead ends: 31 [2025-01-08 22:11:29,059 INFO L226 Difference]: Without dead ends: 29 [2025-01-08 22:11:29,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:11:29,060 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:29,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:11:29,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-08 22:11:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-01-08 22:11:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:29,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2025-01-08 22:11:29,063 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 25 [2025-01-08 22:11:29,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:29,063 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2025-01-08 22:11:29,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2025-01-08 22:11:29,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-08 22:11:29,064 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:29,064 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:29,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-08 22:11:29,064 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:29,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:29,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1962561491, now seen corresponding path program 1 times [2025-01-08 22:11:29,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:29,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430361888] [2025-01-08 22:11:29,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:29,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:29,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-08 22:11:29,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:11:29,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:29,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:11:29,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430361888] [2025-01-08 22:11:29,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430361888] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:29,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861867177] [2025-01-08 22:11:29,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:11:29,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:29,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:29,179 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 22:11:29,182 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 22:11:29,215 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-08 22:11:29,242 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:11:29,243 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:11:29,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:29,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:11:29,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:29,264 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:11:29,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:11:29,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861867177] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:29,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-08 22:11:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584219004] [2025-01-08 22:11:29,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:29,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-08 22:11:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:29,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-08 22:11:29,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:11:29,316 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:29,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:29,419 INFO L93 Difference]: Finished difference Result 157 states and 197 transitions. [2025-01-08 22:11:29,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:11:29,419 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-08 22:11:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:29,420 INFO L225 Difference]: With dead ends: 157 [2025-01-08 22:11:29,420 INFO L226 Difference]: Without dead ends: 135 [2025-01-08 22:11:29,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:11:29,421 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 184 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:29,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 68 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:11:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-01-08 22:11:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 53. [2025-01-08 22:11:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2025-01-08 22:11:29,432 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 25 [2025-01-08 22:11:29,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:29,433 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2025-01-08 22:11:29,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2025-01-08 22:11:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-08 22:11:29,433 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:29,434 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:29,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-08 22:11:29,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:29,638 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:29,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1037469869, now seen corresponding path program 2 times [2025-01-08 22:11:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11848562] [2025-01-08 22:11:29,639 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:11:29,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:29,657 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-01-08 22:11:29,689 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:11:29,690 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:11:29,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2025-01-08 22:11:29,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11848562] [2025-01-08 22:11:29,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11848562] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:29,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731273848] [2025-01-08 22:11:29,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:11:29,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:29,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:29,967 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 22:11:29,968 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 22:11:30,015 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 49 statements into 2 equivalence classes. [2025-01-08 22:11:30,042 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:11:30,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:11:30,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:30,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:11:30,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-08 22:11:30,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-08 22:11:30,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731273848] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:30,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:30,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-01-08 22:11:30,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142441887] [2025-01-08 22:11:30,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:30,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-08 22:11:30,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:30,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-08 22:11:30,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:11:30,292 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:30,525 INFO L93 Difference]: Finished difference Result 331 states and 413 transitions. [2025-01-08 22:11:30,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-08 22:11:30,525 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-08 22:11:30,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:30,526 INFO L225 Difference]: With dead ends: 331 [2025-01-08 22:11:30,526 INFO L226 Difference]: Without dead ends: 291 [2025-01-08 22:11:30,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:11:30,529 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 494 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:30,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 147 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:11:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2025-01-08 22:11:30,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 101. [2025-01-08 22:11:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.26) internal successors, (126), 100 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:30,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 126 transitions. [2025-01-08 22:11:30,536 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 126 transitions. Word has length 49 [2025-01-08 22:11:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:30,536 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 126 transitions. [2025-01-08 22:11:30,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 126 transitions. [2025-01-08 22:11:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-01-08 22:11:30,538 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:30,538 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:30,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-08 22:11:30,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:30,739 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:30,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:30,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1993025107, now seen corresponding path program 3 times [2025-01-08 22:11:30,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:30,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006224822] [2025-01-08 22:11:30,740 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:11:30,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:30,759 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 97 statements into 23 equivalence classes. [2025-01-08 22:11:30,802 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 64 of 97 statements. [2025-01-08 22:11:30,802 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-08 22:11:30,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:31,370 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-01-08 22:11:31,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006224822] [2025-01-08 22:11:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006224822] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851701299] [2025-01-08 22:11:31,370 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:11:31,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:31,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:31,374 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 22:11:31,376 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 22:11:31,440 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 97 statements into 23 equivalence classes. [2025-01-08 22:11:34,821 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 64 of 97 statements. [2025-01-08 22:11:34,821 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-08 22:11:34,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:34,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-08 22:11:34,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:34,875 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-01-08 22:11:34,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-01-08 22:11:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851701299] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:35,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:35,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-01-08 22:11:35,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005836264] [2025-01-08 22:11:35,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:35,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-08 22:11:35,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:35,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-08 22:11:35,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:11:35,515 INFO L87 Difference]: Start difference. First operand 101 states and 126 transitions. Second operand has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:36,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:36,145 INFO L93 Difference]: Finished difference Result 679 states and 845 transitions. [2025-01-08 22:11:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-08 22:11:36,146 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2025-01-08 22:11:36,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:36,148 INFO L225 Difference]: With dead ends: 679 [2025-01-08 22:11:36,148 INFO L226 Difference]: Without dead ends: 603 [2025-01-08 22:11:36,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:11:36,150 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1740 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:36,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 288 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:11:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2025-01-08 22:11:36,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 197. [2025-01-08 22:11:36,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.2551020408163265) internal successors, (246), 196 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:36,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 246 transitions. [2025-01-08 22:11:36,163 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 246 transitions. Word has length 97 [2025-01-08 22:11:36,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:36,163 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 246 transitions. [2025-01-08 22:11:36,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:36,164 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 246 transitions. [2025-01-08 22:11:36,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2025-01-08 22:11:36,165 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:36,165 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:36,178 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 22:11:36,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-01-08 22:11:36,369 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:36,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:36,370 INFO L85 PathProgramCache]: Analyzing trace with hash -775685203, now seen corresponding path program 4 times [2025-01-08 22:11:36,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:36,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986627455] [2025-01-08 22:11:36,370 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:11:36,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:36,415 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 193 statements into 2 equivalence classes. [2025-01-08 22:11:36,445 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 193 of 193 statements. [2025-01-08 22:11:36,445 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:11:36,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:38,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2025-01-08 22:11:38,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:38,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986627455] [2025-01-08 22:11:38,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986627455] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:38,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279174762] [2025-01-08 22:11:38,220 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:11:38,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:38,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:38,222 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 22:11:38,224 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 22:11:38,315 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 193 statements into 2 equivalence classes. [2025-01-08 22:11:38,395 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 193 of 193 statements. [2025-01-08 22:11:38,395 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:11:38,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:38,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-08 22:11:38,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:11:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2025-01-08 22:11:38,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:11:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2025-01-08 22:11:40,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279174762] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:11:40,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:11:40,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-01-08 22:11:40,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511621791] [2025-01-08 22:11:40,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:11:40,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-01-08 22:11:40,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:11:40,825 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-01-08 22:11:40,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-01-08 22:11:40,829 INFO L87 Difference]: Start difference. First operand 197 states and 246 transitions. Second operand has 96 states, 96 states have (on average 3.0) internal successors, (288), 96 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:43,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:11:43,756 INFO L93 Difference]: Finished difference Result 1375 states and 1709 transitions. [2025-01-08 22:11:43,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-01-08 22:11:43,757 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.0) internal successors, (288), 96 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2025-01-08 22:11:43,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:11:43,760 INFO L225 Difference]: With dead ends: 1375 [2025-01-08 22:11:43,760 INFO L226 Difference]: Without dead ends: 1227 [2025-01-08 22:11:43,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-01-08 22:11:43,763 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 3732 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3732 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-08 22:11:43,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3732 Valid, 572 Invalid, 1644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-01-08 22:11:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2025-01-08 22:11:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 389. [2025-01-08 22:11:43,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 1.2525773195876289) internal successors, (486), 388 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 486 transitions. [2025-01-08 22:11:43,779 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 486 transitions. Word has length 193 [2025-01-08 22:11:43,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:11:43,779 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 486 transitions. [2025-01-08 22:11:43,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.0) internal successors, (288), 96 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:11:43,780 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 486 transitions. [2025-01-08 22:11:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2025-01-08 22:11:43,783 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:11:43,783 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:11:43,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-08 22:11:43,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:43,987 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:11:43,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:11:43,988 INFO L85 PathProgramCache]: Analyzing trace with hash -248758355, now seen corresponding path program 5 times [2025-01-08 22:11:43,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:11:43,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68273584] [2025-01-08 22:11:43,988 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:11:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:11:44,051 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 385 statements into 95 equivalence classes. [2025-01-08 22:11:44,479 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) and asserted 385 of 385 statements. [2025-01-08 22:11:44,480 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2025-01-08 22:11:44,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:11:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 17672 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 13207 trivial. 0 not checked. [2025-01-08 22:11:49,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:11:49,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68273584] [2025-01-08 22:11:49,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68273584] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:11:49,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106478868] [2025-01-08 22:11:49,752 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:11:49,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:11:49,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:11:49,754 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 22:11:49,755 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 22:11:49,909 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 385 statements into 95 equivalence classes.