./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/indp5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/indp5.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74cd32c72cd70d8592a00c1c607545b16193fd55a0cff14185e764bbc115500b --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:40:30,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:40:30,930 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:40:30,933 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:40:30,933 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:40:30,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:40:30,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:40:30,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:40:30,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:40:30,955 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:40:30,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:40:30,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:40:30,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:40:30,955 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:40:30,955 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:40:30,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:40:30,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:40:30,957 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:40:30,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:40:30,958 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:40:30,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:40:30,958 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:40:30,958 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:40:30,958 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:40:30,958 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:40:30,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:40:30,958 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:40:30,958 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:40:30,959 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:40:30,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:40:30,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:40:30,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:40:30,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:40:30,959 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:40:30,959 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:40:30,959 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:40:30,959 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:40:30,960 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:40:30,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:40:30,961 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 -> 74cd32c72cd70d8592a00c1c607545b16193fd55a0cff14185e764bbc115500b [2025-01-08 22:40:31,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:40:31,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:40:31,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:40:31,165 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:40:31,166 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:40:31,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/indp5.c [2025-01-08 22:40:32,260 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9802e845/36375cf534794f779cb692bcc39ea0a5/FLAGc4a1f38af [2025-01-08 22:40:32,463 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:40:32,463 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-fpi/indp5.c [2025-01-08 22:40:32,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9802e845/36375cf534794f779cb692bcc39ea0a5/FLAGc4a1f38af [2025-01-08 22:40:32,826 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e9802e845/36375cf534794f779cb692bcc39ea0a5 [2025-01-08 22:40:32,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:40:32,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:40:32,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:40:32,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:40:32,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:40:32,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:32,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c6bf27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32, skipping insertion in model container [2025-01-08 22:40:32,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:32,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:40:32,923 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-fpi/indp5.c[588,601] [2025-01-08 22:40:32,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:40:32,944 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:40:32,950 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-fpi/indp5.c[588,601] [2025-01-08 22:40:32,955 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:40:32,964 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:40:32,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32 WrapperNode [2025-01-08 22:40:32,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:40:32,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:40:32,966 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:40:32,966 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:40:32,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:32,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:32,991 INFO L138 Inliner]: procedures = 17, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2025-01-08 22:40:32,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:40:32,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:40:32,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:40:32,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:40:33,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,001 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,011 INFO L175 MemorySlicer]: Split 22 memory accesses to 4 slices as follows [2, 8, 8, 4]. 36 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 6 writes are split as follows [0, 0, 4, 2]. [2025-01-08 22:40:33,012 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,015 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,016 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:40:33,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:40:33,020 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:40:33,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:40:33,021 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (1/1) ... [2025-01-08 22:40:33,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:40:33,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:40:33,049 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 22:40:33,051 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 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-08 22:40:33,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:40:33,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:40:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:40:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:40:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:40:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-08 22:40:33,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:40:33,123 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:40:33,125 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:40:33,268 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-01-08 22:40:33,268 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:40:33,275 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:40:33,276 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:40:33,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:40:33 BoogieIcfgContainer [2025-01-08 22:40:33,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:40:33,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:40:33,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:40:33,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:40:33,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:40:32" (1/3) ... [2025-01-08 22:40:33,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b061c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:40:33, skipping insertion in model container [2025-01-08 22:40:33,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:40:32" (2/3) ... [2025-01-08 22:40:33,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b061c40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:40:33, skipping insertion in model container [2025-01-08 22:40:33,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:40:33" (3/3) ... [2025-01-08 22:40:33,282 INFO L128 eAbstractionObserver]: Analyzing ICFG indp5.c [2025-01-08 22:40:33,291 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:40:33,292 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG indp5.c that has 1 procedures, 17 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2025-01-08 22:40:33,326 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:40:33,335 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;@644ed5a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:40:33,335 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:40:33,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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 22:40:33,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-08 22:40:33,343 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:40:33,343 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:40:33,343 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:40:33,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:40:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1887776614, now seen corresponding path program 1 times [2025-01-08 22:40:33,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:40:33,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709962492] [2025-01-08 22:40:33,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:40:33,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:40:33,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-08 22:40:33,412 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-08 22:40:33,412 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:40:33,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:40:33,441 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 22:40:33,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:40:33,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709962492] [2025-01-08 22:40:33,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709962492] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:40:33,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:40:33,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-08 22:40:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762610371] [2025-01-08 22:40:33,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:40:33,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-08 22:40:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:40:33,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-08 22:40:33,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:40:33,458 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 22:40:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:40:33,464 INFO L93 Difference]: Finished difference Result 30 states and 42 transitions. [2025-01-08 22:40:33,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-08 22:40:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2025-01-08 22:40:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:40:33,469 INFO L225 Difference]: With dead ends: 30 [2025-01-08 22:40:33,469 INFO L226 Difference]: Without dead ends: 13 [2025-01-08 22:40:33,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:40:33,472 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:40:33,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:40:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-01-08 22:40:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-01-08 22:40:33,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:40:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2025-01-08 22:40:33,490 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 12 [2025-01-08 22:40:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:40:33,491 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2025-01-08 22:40:33,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 22:40:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2025-01-08 22:40:33,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-08 22:40:33,491 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:40:33,491 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:40:33,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:40:33,492 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:40:33,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:40:33,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1207718244, now seen corresponding path program 1 times [2025-01-08 22:40:33,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:40:33,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760231718] [2025-01-08 22:40:33,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:40:33,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:40:33,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-08 22:40:33,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-08 22:40:33,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:40:33,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:40:33,592 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 22:40:33,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:40:33,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760231718] [2025-01-08 22:40:33,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760231718] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:40:33,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:40:33,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:40:33,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214251776] [2025-01-08 22:40:33,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:40:33,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:40:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:40:33,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:40:33,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:40:33,594 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 22:40:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:40:33,632 INFO L93 Difference]: Finished difference Result 25 states and 37 transitions. [2025-01-08 22:40:33,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:40:33,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2025-01-08 22:40:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:40:33,633 INFO L225 Difference]: With dead ends: 25 [2025-01-08 22:40:33,633 INFO L226 Difference]: Without dead ends: 18 [2025-01-08 22:40:33,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:40:33,634 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:40:33,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:40:33,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-01-08 22:40:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-01-08 22:40:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:40:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-01-08 22:40:33,641 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2025-01-08 22:40:33,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:40:33,641 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-01-08 22:40:33,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 22:40:33,641 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-01-08 22:40:33,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:40:33,641 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:40:33,641 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:40:33,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:40:33,641 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:40:33,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:40:33,642 INFO L85 PathProgramCache]: Analyzing trace with hash -918868654, now seen corresponding path program 1 times [2025-01-08 22:40:33,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:40:33,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996499646] [2025-01-08 22:40:33,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:40:33,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:40:33,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:40:33,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:40:33,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:40:33,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:40:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656081308] [2025-01-08 22:40:33,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:40:33,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:40:33,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:40:33,724 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 22:40:33,725 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 22:40:33,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:40:33,803 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:40:33,803 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:40:33,803 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:40:33,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-08 22:40:33,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:40:33,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:40:33,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:40:33,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-08 22:40:34,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-08 22:40:34,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-08 22:40:34,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-08 22:40:34,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:40:34,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:40:34,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2025-01-08 22:40:34,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:34,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 101 [2025-01-08 22:40:34,551 INFO L349 Elim1Store]: treesize reduction 20, result has 54.5 percent of original size [2025-01-08 22:40:34,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 68 [2025-01-08 22:40:34,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:34,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2025-01-08 22:40:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:40:34,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:40:34,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996499646] [2025-01-08 22:40:34,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-08 22:40:34,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656081308] [2025-01-08 22:40:34,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656081308] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:40:34,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-08 22:40:34,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2025-01-08 22:40:34,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403666229] [2025-01-08 22:40:34,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-08 22:40:34,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:40:34,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:40:34,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:40:34,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:40:34,654 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 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 22:40:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:40:35,236 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2025-01-08 22:40:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:40:35,237 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 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 17 [2025-01-08 22:40:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:40:35,238 INFO L225 Difference]: With dead ends: 42 [2025-01-08 22:40:35,238 INFO L226 Difference]: Without dead ends: 39 [2025-01-08 22:40:35,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:40:35,239 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 21 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:40:35,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 40 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:40:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-08 22:40:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2025-01-08 22:40:35,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 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 22:40:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2025-01-08 22:40:35,246 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2025-01-08 22:40:35,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:40:35,247 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2025-01-08 22:40:35,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 17 states have internal predecessors, (29), 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 22:40:35,249 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2025-01-08 22:40:35,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-08 22:40:35,249 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:40:35,249 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:40:35,256 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 22:40:35,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:40:35,454 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:40:35,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:40:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash 445742808, now seen corresponding path program 2 times [2025-01-08 22:40:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:40:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861724638] [2025-01-08 22:40:35,455 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:40:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:40:35,463 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:40:35,498 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:40:35,498 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:40:35,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:40:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:40:35,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:40:35,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861724638] [2025-01-08 22:40:35,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861724638] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:40:35,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947133837] [2025-01-08 22:40:35,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:40:35,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:40:35,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:40:35,621 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 22:40:35,623 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 22:40:35,659 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:40:35,676 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:40:35,676 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:40:35,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:40:35,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:40:35,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:40:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:40:35,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:40:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:40:35,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947133837] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:40:35,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:40:35,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-08 22:40:35,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985769058] [2025-01-08 22:40:35,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:40:35,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:40:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:40:35,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:40:35,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:40:35,736 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 22:40:35,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:40:35,852 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2025-01-08 22:40:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:40:35,852 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 18 [2025-01-08 22:40:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:40:35,853 INFO L225 Difference]: With dead ends: 62 [2025-01-08 22:40:35,853 INFO L226 Difference]: Without dead ends: 47 [2025-01-08 22:40:35,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:40:35,854 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:40:35,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 21 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:40:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-01-08 22:40:35,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2025-01-08 22:40:35,869 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 22:40:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2025-01-08 22:40:35,870 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 18 [2025-01-08 22:40:35,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:40:35,870 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2025-01-08 22:40:35,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 22:40:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2025-01-08 22:40:35,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-08 22:40:35,871 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:40:35,871 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:40:35,876 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 22:40:36,071 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 22:40:36,071 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:40:36,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:40:36,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1579780320, now seen corresponding path program 3 times [2025-01-08 22:40:36,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:40:36,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313596512] [2025-01-08 22:40:36,072 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:40:36,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:40:36,078 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:40:36,090 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:40:36,092 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:40:36,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:40:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:40:36,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:40:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313596512] [2025-01-08 22:40:36,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313596512] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:40:36,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487202889] [2025-01-08 22:40:36,188 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:40:36,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:40:36,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:40:36,191 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 22:40:36,192 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 22:40:36,222 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:40:36,236 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:40:36,236 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:40:36,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:40:36,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:40:36,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:40:36,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:40:36,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:40:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:40:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487202889] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:40:36,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:40:36,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-08 22:40:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633438313] [2025-01-08 22:40:36,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:40:36,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:40:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:40:36,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:40:36,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:40:36,293 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 22:40:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:40:36,365 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2025-01-08 22:40:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:40:36,365 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 18 [2025-01-08 22:40:36,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:40:36,366 INFO L225 Difference]: With dead ends: 44 [2025-01-08 22:40:36,366 INFO L226 Difference]: Without dead ends: 23 [2025-01-08 22:40:36,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:40:36,368 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:40:36,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:40:36,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-08 22:40:36,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-01-08 22:40:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 22:40:36,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2025-01-08 22:40:36,377 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2025-01-08 22:40:36,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:40:36,377 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2025-01-08 22:40:36,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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 22:40:36,377 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2025-01-08 22:40:36,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-08 22:40:36,378 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:40:36,378 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:40:36,384 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 22:40:36,582 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 22:40:36,582 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:40:36,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:40:36,582 INFO L85 PathProgramCache]: Analyzing trace with hash -428235940, now seen corresponding path program 4 times [2025-01-08 22:40:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:40:36,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231488464] [2025-01-08 22:40:36,582 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:40:36,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:40:36,591 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:40:36,639 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-08 22:40:36,639 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:40:36,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-08 22:40:36,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732572902] [2025-01-08 22:40:36,642 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:40:36,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:40:36,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:40:36,644 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 22:40:36,645 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 22:40:36,679 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:40:36,751 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-08 22:40:36,751 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:40:36,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:40:36,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-01-08 22:40:36,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:40:36,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:40:36,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-08 22:40:36,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2025-01-08 22:40:36,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:36,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2025-01-08 22:40:36,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:36,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2025-01-08 22:40:36,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:36,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2025-01-08 22:40:36,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:36,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2025-01-08 22:40:36,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:36,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2025-01-08 22:40:37,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:37,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 23 [2025-01-08 22:40:37,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-08 22:40:37,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-08 22:40:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:40:37,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:40:38,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2025-01-08 22:40:38,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:38,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 101 [2025-01-08 22:40:38,771 INFO L349 Elim1Store]: treesize reduction 42, result has 40.8 percent of original size [2025-01-08 22:40:38,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 133 [2025-01-08 22:40:39,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:40:39,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 146 [2025-01-08 22:40:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:40:39,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:40:39,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231488464] [2025-01-08 22:40:39,183 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-08 22:40:39,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732572902] [2025-01-08 22:40:39,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732572902] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:40:39,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-08 22:40:39,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2025-01-08 22:40:39,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959224184] [2025-01-08 22:40:39,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-08 22:40:39,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-08 22:40:39,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:40:39,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-08 22:40:39,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2025-01-08 22:40:39,186 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 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 22:40:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:40:42,221 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2025-01-08 22:40:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-08 22:40:42,222 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 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 22 [2025-01-08 22:40:42,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:40:42,222 INFO L225 Difference]: With dead ends: 65 [2025-01-08 22:40:42,222 INFO L226 Difference]: Without dead ends: 61 [2025-01-08 22:40:42,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=375, Invalid=2175, Unknown=0, NotChecked=0, Total=2550 [2025-01-08 22:40:42,224 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 108 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:40:42,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 61 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-08 22:40:42,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-08 22:40:42,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 38. [2025-01-08 22:40:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 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 22:40:42,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2025-01-08 22:40:42,236 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 22 [2025-01-08 22:40:42,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:40:42,237 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2025-01-08 22:40:42,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 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 22:40:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2025-01-08 22:40:42,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-08 22:40:42,237 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:40:42,237 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:40:42,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-08 22:40:42,437 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 22:40:42,438 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:40:42,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:40:42,438 INFO L85 PathProgramCache]: Analyzing trace with hash -390474730, now seen corresponding path program 5 times [2025-01-08 22:40:42,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:40:42,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357529655] [2025-01-08 22:40:42,438 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:40:42,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:40:42,447 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes. [2025-01-08 22:40:42,502 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 23 of 23 statements. [2025-01-08 22:40:42,505 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-08 22:40:42,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:40:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-01-08 22:40:42,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:40:42,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357529655] [2025-01-08 22:40:42,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357529655] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:40:42,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933180365] [2025-01-08 22:40:42,617 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:40:42,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:40:42,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:40:42,619 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 22:40:42,620 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 22:40:42,662 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 23 statements into 3 equivalence classes.