./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s12if.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/s12if.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 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:42:42,189 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:42:42,241 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:42:42,250 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:42:42,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:42:42,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:42:42,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:42:42,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:42:42,276 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:42:42,276 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:42:42,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:42:42,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:42:42,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:42:42,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:42:42,278 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:42:42,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:42:42,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:42:42,278 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:42:42,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:42:42,279 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:42:42,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:42:42,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:42:42,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:42:42,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:42:42,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:42:42,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:42:42,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:42:42,281 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:42:42,281 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:42:42,281 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:42:42,281 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:42:42,281 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:42:42,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:42:42,281 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:42:42,281 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:42:42,281 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:42:42,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:42:42,281 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 -> 82bfc5dbe63d3250f02def4ff730c5e861bce4a7ef8a101c197bc29dbc0e3123 [2025-01-08 22:42:42,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:42:42,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:42:42,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:42:42,519 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:42:42,520 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:42:42,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s12if.c [2025-01-08 22:42:43,693 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ef1abc28f/f5d070ad6cd441aa991934f419cb333a/FLAG80ded2e5c [2025-01-08 22:42:43,896 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:42:43,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-fpi/s12if.c [2025-01-08 22:42:43,903 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ef1abc28f/f5d070ad6cd441aa991934f419cb333a/FLAG80ded2e5c [2025-01-08 22:42:43,918 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ef1abc28f/f5d070ad6cd441aa991934f419cb333a [2025-01-08 22:42:43,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:42:43,921 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:42:43,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:42:43,923 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:42:43,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:42:43,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:42:43" (1/1) ... [2025-01-08 22:42:43,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54406d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:43, skipping insertion in model container [2025-01-08 22:42:43,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:42:43" (1/1) ... [2025-01-08 22:42:43,940 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:42:44,044 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/s12if.c[588,601] [2025-01-08 22:42:44,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:42:44,075 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:42:44,081 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/s12if.c[588,601] [2025-01-08 22:42:44,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:42:44,102 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:42:44,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44 WrapperNode [2025-01-08 22:42:44,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:42:44,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:42:44,105 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:42:44,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:42:44,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,125 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2025-01-08 22:42:44,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:42:44,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:42:44,125 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:42:44,125 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:42:44,132 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,147 INFO L175 MemorySlicer]: Split 25 memory accesses to 4 slices as follows [2, 8, 9, 6]. 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, 3, 3]. [2025-01-08 22:42:44,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,150 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,157 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,158 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:42:44,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:42:44,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:42:44,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:42:44,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (1/1) ... [2025-01-08 22:42:44,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:42:44,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:44,186 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 22:42:44,191 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 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-08 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:42:44,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-08 22:42:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-08 22:42:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:42:44,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:42:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:42:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:42:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:42:44,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-08 22:42:44,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:42:44,267 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:42:44,268 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:42:44,379 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-01-08 22:42:44,379 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:42:44,385 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:42:44,385 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:42:44,385 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:42:44 BoogieIcfgContainer [2025-01-08 22:42:44,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:42:44,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:42:44,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:42:44,391 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:42:44,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:42:43" (1/3) ... [2025-01-08 22:42:44,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:42:44, skipping insertion in model container [2025-01-08 22:42:44,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:42:44" (2/3) ... [2025-01-08 22:42:44,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:42:44, skipping insertion in model container [2025-01-08 22:42:44,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:42:44" (3/3) ... [2025-01-08 22:42:44,394 INFO L128 eAbstractionObserver]: Analyzing ICFG s12if.c [2025-01-08 22:42:44,404 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:42:44,407 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG s12if.c that has 1 procedures, 19 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-01-08 22:42:44,446 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:42:44,453 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;@7b5564d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:42:44,454 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:42:44,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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 22:42:44,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-08 22:42:44,460 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:44,460 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:44,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:44,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:44,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1096712901, now seen corresponding path program 1 times [2025-01-08 22:42:44,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:44,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235720889] [2025-01-08 22:42:44,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:44,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:42:44,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:42:44,531 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:44,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:44,567 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 22:42:44,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:44,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235720889] [2025-01-08 22:42:44,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235720889] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:42:44,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:42:44,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-08 22:42:44,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69477713] [2025-01-08 22:42:44,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:42:44,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-08 22:42:44,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:44,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-08 22:42:44,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-08 22:42:44,593 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 22:42:44,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:44,602 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2025-01-08 22:42:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-08 22:42:44,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-08 22:42:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:44,609 INFO L225 Difference]: With dead ends: 34 [2025-01-08 22:42:44,609 INFO L226 Difference]: Without dead ends: 15 [2025-01-08 22:42:44,611 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 22:42:44,614 INFO L435 NwaCegarLoop]: 24 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, 24 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 22:42:44,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:42:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-08 22:42:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-08 22:42:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:42:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2025-01-08 22:42:44,637 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2025-01-08 22:42:44,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:44,637 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2025-01-08 22:42:44,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 22:42:44,637 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2025-01-08 22:42:44,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-08 22:42:44,637 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:44,637 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:44,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:42:44,638 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:44,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:44,638 INFO L85 PathProgramCache]: Analyzing trace with hash 678294461, now seen corresponding path program 1 times [2025-01-08 22:42:44,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:44,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326331612] [2025-01-08 22:42:44,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:44,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:44,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:42:44,665 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:42:44,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:44,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:44,744 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 22:42:44,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:44,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326331612] [2025-01-08 22:42:44,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326331612] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:42:44,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:42:44,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:42:44,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016796164] [2025-01-08 22:42:44,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:42:44,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:42:44,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:44,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:42:44,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:42:44,746 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:42:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:44,802 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2025-01-08 22:42:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:42:44,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-08 22:42:44,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:44,803 INFO L225 Difference]: With dead ends: 31 [2025-01-08 22:42:44,803 INFO L226 Difference]: Without dead ends: 22 [2025-01-08 22:42:44,803 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 22:42:44,804 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:44,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 9 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:42:44,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-08 22:42:44,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2025-01-08 22:42:44,809 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 22:42:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2025-01-08 22:42:44,809 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2025-01-08 22:42:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:44,809 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2025-01-08 22:42:44,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 22:42:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2025-01-08 22:42:44,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:42:44,810 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:44,810 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 22:42:44,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:42:44,810 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:44,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:44,810 INFO L85 PathProgramCache]: Analyzing trace with hash -65471340, now seen corresponding path program 1 times [2025-01-08 22:42:44,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:44,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085066924] [2025-01-08 22:42:44,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:44,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:44,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:42:44,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:42:44,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:44,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:45,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:45,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085066924] [2025-01-08 22:42:45,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085066924] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:45,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015179638] [2025-01-08 22:42:45,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:45,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:45,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:45,333 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 22:42:45,335 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 22:42:45,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:42:45,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:42:45,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:45,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:45,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-08 22:42:45,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:45,448 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 22:42:45,549 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 22:42:45,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:45,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:45,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:45,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015179638] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:45,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:45,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2025-01-08 22:42:45,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686307679] [2025-01-08 22:42:45,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:45,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:42:45,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:45,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:42:45,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:42:45,726 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 22:42:45,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:45,955 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2025-01-08 22:42:45,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-08 22:42:45,956 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 22:42:45,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:45,956 INFO L225 Difference]: With dead ends: 38 [2025-01-08 22:42:45,956 INFO L226 Difference]: Without dead ends: 35 [2025-01-08 22:42:45,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:42:45,957 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 45 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:45,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 28 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:45,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-01-08 22:42:45,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2025-01-08 22:42:45,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 27 states have internal predecessors, (37), 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 22:42:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2025-01-08 22:42:45,962 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 17 [2025-01-08 22:42:45,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:45,962 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2025-01-08 22:42:45,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 22:42:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2025-01-08 22:42:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:42:45,962 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:45,963 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 22:42:45,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-01-08 22:42:46,165 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 22:42:46,166 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:46,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -63624298, now seen corresponding path program 1 times [2025-01-08 22:42:46,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:46,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877562936] [2025-01-08 22:42:46,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:46,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:46,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:42:46,183 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:42:46,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:46,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:46,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:46,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877562936] [2025-01-08 22:42:46,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877562936] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:46,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16005621] [2025-01-08 22:42:46,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:46,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:46,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:46,375 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 22:42:46,377 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 22:42:46,408 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:42:46,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:42:46,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:46,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:46,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-08 22:42:46,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:46,456 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 22:42:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:46,480 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:46,527 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 27 treesize of output 23 [2025-01-08 22:42:46,535 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-08 22:42:46,536 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 24 treesize of output 16 [2025-01-08 22:42:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:46,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16005621] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:46,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:46,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 14 [2025-01-08 22:42:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792182119] [2025-01-08 22:42:46,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:46,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:42:46,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:46,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:42:46,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:42:46,546 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:42:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:46,678 INFO L93 Difference]: Finished difference Result 77 states and 104 transitions. [2025-01-08 22:42:46,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:42:46,679 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-01-08 22:42:46,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:46,680 INFO L225 Difference]: With dead ends: 77 [2025-01-08 22:42:46,680 INFO L226 Difference]: Without dead ends: 66 [2025-01-08 22:42:46,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:42:46,680 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 69 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:46,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 53 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-01-08 22:42:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 38. [2025-01-08 22:42:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 37 states have internal predecessors, (51), 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 22:42:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2025-01-08 22:42:46,692 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 17 [2025-01-08 22:42:46,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:46,692 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2025-01-08 22:42:46,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:42:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2025-01-08 22:42:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:42:46,694 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:46,694 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 22:42:46,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-08 22:42:46,894 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 22:42:46,894 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:46,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:46,896 INFO L85 PathProgramCache]: Analyzing trace with hash 616434072, now seen corresponding path program 1 times [2025-01-08 22:42:46,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:46,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193894811] [2025-01-08 22:42:46,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:46,911 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:42:46,918 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:42:46,918 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:46,918 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:47,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:47,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193894811] [2025-01-08 22:42:47,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193894811] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:47,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702634327] [2025-01-08 22:42:47,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:47,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:47,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:47,026 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 22:42:47,028 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 22:42:47,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:42:47,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:42:47,070 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:47,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:47,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-08 22:42:47,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:47,079 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 22:42:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:47,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:47,111 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 14 treesize of output 12 [2025-01-08 22:42:47,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 12 [2025-01-08 22:42:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:47,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702634327] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:47,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:47,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-08 22:42:47,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380908483] [2025-01-08 22:42:47,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:47,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-08 22:42:47,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:47,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-08 22:42:47,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-08 22:42:47,122 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 22:42:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:47,191 INFO L93 Difference]: Finished difference Result 66 states and 90 transitions. [2025-01-08 22:42:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:42:47,192 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 22:42:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:47,193 INFO L225 Difference]: With dead ends: 66 [2025-01-08 22:42:47,193 INFO L226 Difference]: Without dead ends: 48 [2025-01-08 22:42:47,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:42:47,193 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:47,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-08 22:42:47,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2025-01-08 22:42:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 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 22:42:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2025-01-08 22:42:47,202 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 17 [2025-01-08 22:42:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:47,203 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2025-01-08 22:42:47,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 22:42:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2025-01-08 22:42:47,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-08 22:42:47,204 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:47,204 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 22:42:47,210 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 22:42:47,408 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 22:42:47,408 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:47,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:47,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1299140122, now seen corresponding path program 2 times [2025-01-08 22:42:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:47,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712239404] [2025-01-08 22:42:47,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:42:47,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:47,418 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:42:47,429 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:42:47,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:42:47,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:47,488 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:47,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:47,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712239404] [2025-01-08 22:42:47,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712239404] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:47,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116705565] [2025-01-08 22:42:47,488 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:42:47,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:47,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:47,490 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 22:42:47,492 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 22:42:47,522 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-01-08 22:42:47,535 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:42:47,535 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:42:47,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:47,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:42:47,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:47,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:47,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:47,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116705565] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:47,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:47,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-08 22:42:47,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664687449] [2025-01-08 22:42:47,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:47,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:42:47,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:47,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:42:47,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:42:47,614 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 22:42:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:47,770 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2025-01-08 22:42:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:42:47,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 18 [2025-01-08 22:42:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:47,770 INFO L225 Difference]: With dead ends: 73 [2025-01-08 22:42:47,771 INFO L226 Difference]: Without dead ends: 65 [2025-01-08 22:42:47,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:42:47,771 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 48 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:47,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 25 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:47,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-01-08 22:42:47,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 45. [2025-01-08 22:42:47,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 44 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:42:47,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2025-01-08 22:42:47,784 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 18 [2025-01-08 22:42:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:47,784 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2025-01-08 22:42:47,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 22:42:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2025-01-08 22:42:47,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-08 22:42:47,785 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:47,785 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:47,792 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 22:42:47,985 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 22:42:47,986 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:47,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:47,986 INFO L85 PathProgramCache]: Analyzing trace with hash -807674365, now seen corresponding path program 3 times [2025-01-08 22:42:47,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:47,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699607403] [2025-01-08 22:42:47,986 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:42:47,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:47,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-01-08 22:42:48,001 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-01-08 22:42:48,001 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:42:48,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:48,047 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:48,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699607403] [2025-01-08 22:42:48,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699607403] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:48,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606712102] [2025-01-08 22:42:48,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:42:48,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:48,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:48,049 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 22:42:48,051 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 22:42:48,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 3 equivalence classes. [2025-01-08 22:42:48,104 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 20 statements. [2025-01-08 22:42:48,105 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:42:48,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:48,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:42:48,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:48,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:48,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606712102] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:48,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:48,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-08 22:42:48,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635379432] [2025-01-08 22:42:48,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:48,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:42:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:48,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:42:48,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:42:48,168 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 22:42:48,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:48,236 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2025-01-08 22:42:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:42:48,237 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 20 [2025-01-08 22:42:48,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:48,237 INFO L225 Difference]: With dead ends: 66 [2025-01-08 22:42:48,237 INFO L226 Difference]: Without dead ends: 35 [2025-01-08 22:42:48,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 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 22:42:48,238 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:48,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 27 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:48,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-01-08 22:42:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2025-01-08 22:42:48,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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 22:42:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2025-01-08 22:42:48,243 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 20 [2025-01-08 22:42:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:48,243 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2025-01-08 22:42:48,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 22:42:48,243 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2025-01-08 22:42:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:42:48,243 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:48,243 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:48,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-08 22:42:48,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:48,444 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:48,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1252954589, now seen corresponding path program 4 times [2025-01-08 22:42:48,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:48,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269716099] [2025-01-08 22:42:48,445 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:42:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:48,453 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-01-08 22:42:48,461 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:42:48,461 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:42:48,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:48,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:42:48,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:48,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269716099] [2025-01-08 22:42:48,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269716099] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:48,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620561856] [2025-01-08 22:42:48,840 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:42:48,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:48,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:48,841 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:42:48,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-08 22:42:48,879 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 24 statements into 2 equivalence classes. [2025-01-08 22:42:48,897 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:42:48,898 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:42:48,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:48,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-08 22:42:48,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:48,911 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 22:42:48,984 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 22:42:49,076 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 22:42:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:42:49,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:49,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:42:49,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620561856] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:49,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:49,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 28 [2025-01-08 22:42:49,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299692117] [2025-01-08 22:42:49,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:49,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-08 22:42:49,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:49,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-08 22:42:49,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:42:49,404 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 28 states, 28 states have (on average 1.75) internal successors, (49), 28 states have internal predecessors, (49), 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 22:42:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:49,974 INFO L93 Difference]: Finished difference Result 73 states and 95 transitions. [2025-01-08 22:42:49,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-08 22:42:49,975 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.75) internal successors, (49), 28 states have internal predecessors, (49), 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 24 [2025-01-08 22:42:49,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:49,975 INFO L225 Difference]: With dead ends: 73 [2025-01-08 22:42:49,975 INFO L226 Difference]: Without dead ends: 66 [2025-01-08 22:42:49,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=1605, Unknown=0, NotChecked=0, Total=1892 [2025-01-08 22:42:49,976 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:49,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 67 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:42:49,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-01-08 22:42:49,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2025-01-08 22:42:49,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 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 22:42:49,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2025-01-08 22:42:49,991 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 24 [2025-01-08 22:42:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:49,993 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2025-01-08 22:42:49,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.75) internal successors, (49), 28 states have internal predecessors, (49), 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 22:42:49,994 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2025-01-08 22:42:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:42:49,994 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:49,994 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:50,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-08 22:42:50,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-01-08 22:42:50,195 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:50,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1254801631, now seen corresponding path program 1 times [2025-01-08 22:42:50,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:50,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938768433] [2025-01-08 22:42:50,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:50,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:50,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:42:50,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:42:50,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:50,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:42:50,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:50,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938768433] [2025-01-08 22:42:50,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938768433] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:50,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383796861] [2025-01-08 22:42:50,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:50,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:50,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:50,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:42:50,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-08 22:42:50,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:42:50,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:42:50,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:50,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:50,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-08 22:42:50,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:50,509 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 22:42:50,536 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:42:50,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:50,594 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 29 treesize of output 25 [2025-01-08 22:42:50,597 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-08 22:42:50,597 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 26 treesize of output 16 [2025-01-08 22:42:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:42:50,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383796861] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:50,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:50,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2025-01-08 22:42:50,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129912106] [2025-01-08 22:42:50,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:50,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:42:50,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:50,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:42:50,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:42:50,617 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 22:42:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:50,830 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2025-01-08 22:42:50,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:42:50,830 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 24 [2025-01-08 22:42:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:50,831 INFO L225 Difference]: With dead ends: 96 [2025-01-08 22:42:50,831 INFO L226 Difference]: Without dead ends: 90 [2025-01-08 22:42:50,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:42:50,832 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 49 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:50,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 103 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:42:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-01-08 22:42:50,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 61. [2025-01-08 22:42:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 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 22:42:50,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2025-01-08 22:42:50,839 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 24 [2025-01-08 22:42:50,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:50,839 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2025-01-08 22:42:50,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 22:42:50,840 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2025-01-08 22:42:50,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:42:50,840 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:50,840 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:50,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-08 22:42:51,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:51,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:51,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:51,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1512967069, now seen corresponding path program 1 times [2025-01-08 22:42:51,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:51,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491329888] [2025-01-08 22:42:51,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:51,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:51,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:42:51,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:42:51,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:51,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:42:51,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:51,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491329888] [2025-01-08 22:42:51,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491329888] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:51,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903536336] [2025-01-08 22:42:51,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:42:51,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:51,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:51,244 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:42:51,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-08 22:42:51,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-01-08 22:42:51,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:42:51,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:51,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:51,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-08 22:42:51,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:51,309 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 22:42:51,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:42:51,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:42:51,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:42:51,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:51,385 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 16 treesize of output 14 [2025-01-08 22:42:51,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2025-01-08 22:42:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:42:51,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903536336] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:51,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:51,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2025-01-08 22:42:51,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923440684] [2025-01-08 22:42:51,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:51,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:42:51,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:51,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:42:51,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:42:51,408 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 22:42:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:51,498 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2025-01-08 22:42:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:42:51,499 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 24 [2025-01-08 22:42:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:51,500 INFO L225 Difference]: With dead ends: 100 [2025-01-08 22:42:51,500 INFO L226 Difference]: Without dead ends: 72 [2025-01-08 22:42:51,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:42:51,501 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:51,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 54 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-01-08 22:42:51,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 63. [2025-01-08 22:42:51,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 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 22:42:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2025-01-08 22:42:51,508 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 24 [2025-01-08 22:42:51,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:51,509 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2025-01-08 22:42:51,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 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 22:42:51,509 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2025-01-08 22:42:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-08 22:42:51,509 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:51,509 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:51,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-08 22:42:51,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:51,710 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:51,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:51,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1951883881, now seen corresponding path program 5 times [2025-01-08 22:42:51,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:51,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965046856] [2025-01-08 22:42:51,711 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:42:51,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:51,718 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-01-08 22:42:51,724 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:42:51,724 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-08 22:42:51,724 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:42:51,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:51,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965046856] [2025-01-08 22:42:51,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965046856] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:51,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133885040] [2025-01-08 22:42:51,789 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:42:51,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:51,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:51,791 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:42:51,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-08 22:42:51,829 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 25 statements into 3 equivalence classes. [2025-01-08 22:42:51,849 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 25 of 25 statements. [2025-01-08 22:42:51,850 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-08 22:42:51,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:51,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:42:51,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:42:51,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:42:51,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133885040] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:51,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:51,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-01-08 22:42:51,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250536908] [2025-01-08 22:42:51,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:51,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-08 22:42:51,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:51,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-08 22:42:51,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:42:51,938 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:42:52,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:52,085 INFO L93 Difference]: Finished difference Result 103 states and 129 transitions. [2025-01-08 22:42:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:42:52,085 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2025-01-08 22:42:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:52,086 INFO L225 Difference]: With dead ends: 103 [2025-01-08 22:42:52,086 INFO L226 Difference]: Without dead ends: 90 [2025-01-08 22:42:52,086 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:42:52,087 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:52,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 24 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:52,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-01-08 22:42:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2025-01-08 22:42:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 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 22:42:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 79 transitions. [2025-01-08 22:42:52,099 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 79 transitions. Word has length 25 [2025-01-08 22:42:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:52,099 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 79 transitions. [2025-01-08 22:42:52,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:42:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 79 transitions. [2025-01-08 22:42:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-08 22:42:52,100 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:52,101 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:52,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-08 22:42:52,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:52,301 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:52,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1056745446, now seen corresponding path program 6 times [2025-01-08 22:42:52,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:52,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620242263] [2025-01-08 22:42:52,302 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:42:52,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:52,309 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 4 equivalence classes. [2025-01-08 22:42:52,334 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:42:52,334 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:42:52,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:42:52,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:52,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620242263] [2025-01-08 22:42:52,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620242263] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:52,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120358721] [2025-01-08 22:42:52,398 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:42:52,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:52,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:52,400 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:42:52,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-08 22:42:52,442 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 4 equivalence classes. [2025-01-08 22:42:52,467 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:42:52,467 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:42:52,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:52,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:42:52,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:42:52,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:52,604 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:42:52,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120358721] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:52,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:52,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-01-08 22:42:52,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036741552] [2025-01-08 22:42:52,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:52,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:42:52,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:52,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:42:52,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:42:52,606 INFO L87 Difference]: Start difference. First operand 63 states and 79 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 22:42:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:52,718 INFO L93 Difference]: Finished difference Result 93 states and 114 transitions. [2025-01-08 22:42:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:42:52,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 27 [2025-01-08 22:42:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:52,719 INFO L225 Difference]: With dead ends: 93 [2025-01-08 22:42:52,719 INFO L226 Difference]: Without dead ends: 45 [2025-01-08 22:42:52,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:42:52,720 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 60 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:52,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 25 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-01-08 22:42:52,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2025-01-08 22:42:52,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 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 22:42:52,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2025-01-08 22:42:52,726 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2025-01-08 22:42:52,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:52,726 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2025-01-08 22:42:52,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 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 22:42:52,726 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2025-01-08 22:42:52,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-08 22:42:52,727 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:52,727 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:52,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-08 22:42:52,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-08 22:42:52,931 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:52,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash -461827212, now seen corresponding path program 7 times [2025-01-08 22:42:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:52,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274935796] [2025-01-08 22:42:52,931 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:42:52,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:52,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-08 22:42:52,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:42:52,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:52,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:53,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274935796] [2025-01-08 22:42:53,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274935796] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580578434] [2025-01-08 22:42:53,410 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:42:53,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:53,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:53,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:42:53,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-08 22:42:53,462 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-01-08 22:42:53,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:42:53,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:42:53,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:53,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 45 conjuncts are in the unsatisfiable core [2025-01-08 22:42:53,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:53,489 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 22:42:53,617 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 22:42:53,693 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 22:42:53,767 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 22:42:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:53,787 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580578434] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:54,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:54,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 36 [2025-01-08 22:42:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598460159] [2025-01-08 22:42:54,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:54,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-08 22:42:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:54,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-08 22:42:54,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2025-01-08 22:42:54,146 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 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 22:42:55,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:55,136 INFO L93 Difference]: Finished difference Result 108 states and 141 transitions. [2025-01-08 22:42:55,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-08 22:42:55,137 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 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 31 [2025-01-08 22:42:55,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:55,137 INFO L225 Difference]: With dead ends: 108 [2025-01-08 22:42:55,137 INFO L226 Difference]: Without dead ends: 101 [2025-01-08 22:42:55,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=412, Invalid=3248, Unknown=0, NotChecked=0, Total=3660 [2025-01-08 22:42:55,138 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:55,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 92 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-08 22:42:55,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-01-08 22:42:55,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 86. [2025-01-08 22:42:55,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.2941176470588236) internal successors, (110), 85 states have internal predecessors, (110), 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 22:42:55,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2025-01-08 22:42:55,149 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 31 [2025-01-08 22:42:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:55,149 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2025-01-08 22:42:55,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 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 22:42:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2025-01-08 22:42:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-08 22:42:55,150 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:55,150 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:55,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-08 22:42:55,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-01-08 22:42:55,350 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:55,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash -459980170, now seen corresponding path program 2 times [2025-01-08 22:42:55,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:55,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80409277] [2025-01-08 22:42:55,351 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:42:55,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:55,356 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-08 22:42:55,365 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:42:55,365 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:42:55,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:42:55,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:55,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80409277] [2025-01-08 22:42:55,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80409277] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:55,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598036298] [2025-01-08 22:42:55,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:42:55,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:55,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:55,636 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:42:55,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-08 22:42:55,687 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-08 22:42:55,703 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:42:55,704 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:42:55,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:55,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-08 22:42:55,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:55,771 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 22:42:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:42:55,814 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:55,883 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 29 treesize of output 25 [2025-01-08 22:42:55,891 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-08 22:42:55,891 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 26 treesize of output 16 [2025-01-08 22:42:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:42:55,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598036298] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:55,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:55,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 28 [2025-01-08 22:42:55,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421774910] [2025-01-08 22:42:55,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:55,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-08 22:42:55,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:55,930 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-08 22:42:55,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:42:55,930 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:42:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:56,408 INFO L93 Difference]: Finished difference Result 211 states and 279 transitions. [2025-01-08 22:42:56,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-08 22:42:56,409 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-01-08 22:42:56,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:56,410 INFO L225 Difference]: With dead ends: 211 [2025-01-08 22:42:56,410 INFO L226 Difference]: Without dead ends: 165 [2025-01-08 22:42:56,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=1664, Unknown=0, NotChecked=0, Total=2070 [2025-01-08 22:42:56,410 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 149 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:56,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 92 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:42:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-01-08 22:42:56,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 114. [2025-01-08 22:42:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.2831858407079646) internal successors, (145), 113 states have internal predecessors, (145), 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 22:42:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2025-01-08 22:42:56,433 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 31 [2025-01-08 22:42:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:56,433 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2025-01-08 22:42:56,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:42:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2025-01-08 22:42:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-08 22:42:56,434 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:56,434 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:56,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-08 22:42:56,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:56,634 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:56,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1739843848, now seen corresponding path program 2 times [2025-01-08 22:42:56,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:56,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971430873] [2025-01-08 22:42:56,635 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:42:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:56,640 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-08 22:42:56,647 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:42:56,647 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:42:56,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:56,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:56,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971430873] [2025-01-08 22:42:56,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971430873] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:56,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223930966] [2025-01-08 22:42:56,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:42:56,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:56,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:56,815 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:42:56,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-08 22:42:56,868 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-08 22:42:56,886 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-08 22:42:56,886 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:42:56,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:56,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-08 22:42:56,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:56,922 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 22:42:56,960 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:42:56,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:42:56,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:42:56,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:42:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:57,012 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:57,036 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 16 treesize of output 14 [2025-01-08 22:42:57,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2025-01-08 22:42:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:57,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223930966] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:57,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:57,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2025-01-08 22:42:57,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316900272] [2025-01-08 22:42:57,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:57,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:42:57,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:57,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:42:57,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:42:57,043 INFO L87 Difference]: Start difference. First operand 114 states and 145 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 22:42:57,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:57,202 INFO L93 Difference]: Finished difference Result 198 states and 254 transitions. [2025-01-08 22:42:57,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:42:57,203 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 31 [2025-01-08 22:42:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:57,204 INFO L225 Difference]: With dead ends: 198 [2025-01-08 22:42:57,204 INFO L226 Difference]: Without dead ends: 130 [2025-01-08 22:42:57,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:42:57,204 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:57,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 79 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:57,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2025-01-08 22:42:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2025-01-08 22:42:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.2654867256637168) internal successors, (143), 113 states have internal predecessors, (143), 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 22:42:57,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 143 transitions. [2025-01-08 22:42:57,223 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 143 transitions. Word has length 31 [2025-01-08 22:42:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:57,223 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 143 transitions. [2025-01-08 22:42:57,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 22:42:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 143 transitions. [2025-01-08 22:42:57,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-08 22:42:57,223 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:57,223 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:57,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-08 22:42:57,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:57,428 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:57,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1664662918, now seen corresponding path program 8 times [2025-01-08 22:42:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:57,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244784096] [2025-01-08 22:42:57,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:42:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:57,433 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-08 22:42:57,440 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:42:57,440 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:42:57,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:57,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:57,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244784096] [2025-01-08 22:42:57,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244784096] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:57,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385000432] [2025-01-08 22:42:57,521 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:42:57,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:57,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:57,524 INFO L229 MonitoredProcess]: Starting monitored process 15 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 22:42:57,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-08 22:42:57,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-08 22:42:57,590 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:42:57,591 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:42:57,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:57,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:42:57,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:57,653 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385000432] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:57,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:57,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-01-08 22:42:57,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543144743] [2025-01-08 22:42:57,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:57,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:42:57,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:57,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:42:57,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:42:57,713 INFO L87 Difference]: Start difference. First operand 114 states and 143 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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 22:42:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:57,931 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2025-01-08 22:42:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:42:57,931 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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 32 [2025-01-08 22:42:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:57,932 INFO L225 Difference]: With dead ends: 157 [2025-01-08 22:42:57,932 INFO L226 Difference]: Without dead ends: 136 [2025-01-08 22:42:57,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:42:57,933 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 80 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:57,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 37 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:42:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-01-08 22:42:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 106. [2025-01-08 22:42:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 105 states have internal predecessors, (130), 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 22:42:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2025-01-08 22:42:57,951 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 32 [2025-01-08 22:42:57,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:57,951 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2025-01-08 22:42:57,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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 22:42:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2025-01-08 22:42:57,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-08 22:42:57,952 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:57,952 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:57,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-08 22:42:58,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-01-08 22:42:58,157 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:58,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1780360413, now seen corresponding path program 9 times [2025-01-08 22:42:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733239791] [2025-01-08 22:42:58,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:42:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:58,163 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 5 equivalence classes. [2025-01-08 22:42:58,187 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:42:58,187 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:42:58,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:42:58,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733239791] [2025-01-08 22:42:58,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733239791] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:58,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015752645] [2025-01-08 22:42:58,276 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:42:58,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:58,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:58,278 INFO L229 MonitoredProcess]: Starting monitored process 16 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 22:42:58,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-08 22:42:58,327 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 5 equivalence classes. [2025-01-08 22:42:58,355 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:42:58,355 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:42:58,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:58,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:42:58,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:42:58,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:42:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:42:58,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015752645] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:42:58,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:42:58,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 17 [2025-01-08 22:42:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894331538] [2025-01-08 22:42:58,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:42:58,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:42:58,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:42:58,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:42:58,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:42:58,475 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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 22:42:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:42:58,583 INFO L93 Difference]: Finished difference Result 130 states and 159 transitions. [2025-01-08 22:42:58,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:42:58,583 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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 34 [2025-01-08 22:42:58,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:42:58,583 INFO L225 Difference]: With dead ends: 130 [2025-01-08 22:42:58,583 INFO L226 Difference]: Without dead ends: 55 [2025-01-08 22:42:58,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:42:58,585 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:42:58,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 27 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:42:58,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-01-08 22:42:58,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2025-01-08 22:42:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 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 22:42:58,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2025-01-08 22:42:58,593 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 34 [2025-01-08 22:42:58,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:42:58,593 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2025-01-08 22:42:58,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.235294117647059) internal successors, (55), 17 states have internal predecessors, (55), 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 22:42:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2025-01-08 22:42:58,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:42:58,594 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:42:58,594 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:42:58,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-08 22:42:58,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-01-08 22:42:58,798 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:42:58,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:42:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1100613635, now seen corresponding path program 10 times [2025-01-08 22:42:58,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:42:58,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956145956] [2025-01-08 22:42:58,798 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:42:58,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:42:58,804 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:42:58,810 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:42:58,811 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:42:58,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:42:59,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:42:59,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956145956] [2025-01-08 22:42:59,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956145956] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:42:59,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647439215] [2025-01-08 22:42:59,375 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:42:59,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:42:59,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:42:59,377 INFO L229 MonitoredProcess]: Starting monitored process 17 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 22:42:59,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-08 22:42:59,433 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:42:59,465 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:42:59,465 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:42:59,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:42:59,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-08 22:42:59,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:42:59,476 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 22:42:59,583 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 22:42:59,653 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 22:42:59,734 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 22:42:59,826 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 22:42:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:42:59,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 22 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:43:00,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647439215] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:00,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:00,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 21] total 50 [2025-01-08 22:43:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564993150] [2025-01-08 22:43:00,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:00,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-01-08 22:43:00,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:00,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-01-08 22:43:00,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2025-01-08 22:43:00,497 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 50 states, 50 states have (on average 1.64) internal successors, (82), 50 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:43:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:02,500 INFO L93 Difference]: Finished difference Result 160 states and 207 transitions. [2025-01-08 22:43:02,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-01-08 22:43:02,500 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.64) internal successors, (82), 50 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-01-08 22:43:02,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:02,501 INFO L225 Difference]: With dead ends: 160 [2025-01-08 22:43:02,501 INFO L226 Difference]: Without dead ends: 153 [2025-01-08 22:43:02,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3040 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=998, Invalid=9714, Unknown=0, NotChecked=0, Total=10712 [2025-01-08 22:43:02,503 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 79 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:02,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 88 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:43:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-01-08 22:43:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116. [2025-01-08 22:43:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 115 states have internal predecessors, (147), 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 22:43:02,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 147 transitions. [2025-01-08 22:43:02,517 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 147 transitions. Word has length 38 [2025-01-08 22:43:02,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:02,517 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 147 transitions. [2025-01-08 22:43:02,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.64) internal successors, (82), 50 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:43:02,518 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 147 transitions. [2025-01-08 22:43:02,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:43:02,518 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:02,518 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:02,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-08 22:43:02,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-08 22:43:02,719 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:02,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:02,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1098766593, now seen corresponding path program 3 times [2025-01-08 22:43:02,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:02,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095308496] [2025-01-08 22:43:02,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:43:02,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:02,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-08 22:43:02,739 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 38 statements. [2025-01-08 22:43:02,740 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:43:02,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-08 22:43:03,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095308496] [2025-01-08 22:43:03,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095308496] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:03,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371812980] [2025-01-08 22:43:03,082 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:43:03,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:03,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:03,084 INFO L229 MonitoredProcess]: Starting monitored process 18 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 22:43:03,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-08 22:43:03,139 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-08 22:43:03,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 26 of 38 statements. [2025-01-08 22:43:03,160 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:43:03,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:03,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-08 22:43:03,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:03,182 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 27 treesize of output 15 [2025-01-08 22:43:03,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:03,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 17 [2025-01-08 22:43:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:43:03,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-01-08 22:43:03,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371812980] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:03,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:03,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 27 [2025-01-08 22:43:03,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029659226] [2025-01-08 22:43:03,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:03,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-01-08 22:43:03,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:03,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-01-08 22:43:03,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2025-01-08 22:43:03,451 INFO L87 Difference]: Start difference. First operand 116 states and 147 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 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 22:43:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:04,357 INFO L93 Difference]: Finished difference Result 242 states and 311 transitions. [2025-01-08 22:43:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-01-08 22:43:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 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) Word has length 38 [2025-01-08 22:43:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:04,358 INFO L225 Difference]: With dead ends: 242 [2025-01-08 22:43:04,358 INFO L226 Difference]: Without dead ends: 176 [2025-01-08 22:43:04,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=760, Invalid=2780, Unknown=0, NotChecked=0, Total=3540 [2025-01-08 22:43:04,359 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 162 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:04,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 106 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:43:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-01-08 22:43:04,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 146. [2025-01-08 22:43:04,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.2551724137931035) internal successors, (182), 145 states have internal predecessors, (182), 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 22:43:04,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 182 transitions. [2025-01-08 22:43:04,379 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 182 transitions. Word has length 38 [2025-01-08 22:43:04,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:04,379 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 182 transitions. [2025-01-08 22:43:04,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 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 22:43:04,380 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 182 transitions. [2025-01-08 22:43:04,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:43:04,380 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:04,380 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:04,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-08 22:43:04,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:04,584 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:04,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:04,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1202055997, now seen corresponding path program 3 times [2025-01-08 22:43:04,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:04,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556964495] [2025-01-08 22:43:04,584 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:43:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:04,590 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-08 22:43:04,604 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:43:04,604 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:43:04,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:43:04,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556964495] [2025-01-08 22:43:04,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556964495] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:04,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914185271] [2025-01-08 22:43:04,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:43:04,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:04,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:04,935 INFO L229 MonitoredProcess]: Starting monitored process 19 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 22:43:04,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-08 22:43:04,992 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 5 equivalence classes. [2025-01-08 22:43:05,047 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:43:05,047 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:43:05,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:05,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-01-08 22:43:05,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:05,060 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 22:43:05,096 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:05,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:43:05,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:05,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2025-01-08 22:43:05,141 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2025-01-08 22:43:05,142 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 2 case distinctions, treesize of input 29 treesize of output 34 [2025-01-08 22:43:05,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:05,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 29 treesize of output 23 [2025-01-08 22:43:05,380 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:43:05,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:05,768 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 16 treesize of output 14 [2025-01-08 22:43:05,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 12 [2025-01-08 22:43:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:43:05,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914185271] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:05,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:05,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 22] total 49 [2025-01-08 22:43:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526765919] [2025-01-08 22:43:05,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:05,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-08 22:43:05,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:05,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-08 22:43:05,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=2050, Unknown=0, NotChecked=0, Total=2352 [2025-01-08 22:43:05,829 INFO L87 Difference]: Start difference. First operand 146 states and 182 transitions. Second operand has 49 states, 49 states have (on average 1.836734693877551) internal successors, (90), 49 states have internal predecessors, (90), 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 22:43:08,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:08,577 INFO L93 Difference]: Finished difference Result 348 states and 442 transitions. [2025-01-08 22:43:08,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-01-08 22:43:08,578 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.836734693877551) internal successors, (90), 49 states have internal predecessors, (90), 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 38 [2025-01-08 22:43:08,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:08,579 INFO L225 Difference]: With dead ends: 348 [2025-01-08 22:43:08,579 INFO L226 Difference]: Without dead ends: 236 [2025-01-08 22:43:08,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5826 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2688, Invalid=17052, Unknown=0, NotChecked=0, Total=19740 [2025-01-08 22:43:08,584 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 337 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:08,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 141 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:43:08,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2025-01-08 22:43:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 136. [2025-01-08 22:43:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.2148148148148148) internal successors, (164), 135 states have internal predecessors, (164), 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 22:43:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 164 transitions. [2025-01-08 22:43:08,619 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 164 transitions. Word has length 38 [2025-01-08 22:43:08,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:08,619 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 164 transitions. [2025-01-08 22:43:08,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.836734693877551) internal successors, (90), 49 states have internal predecessors, (90), 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 22:43:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 164 transitions. [2025-01-08 22:43:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-01-08 22:43:08,619 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:08,619 INFO L218 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:08,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-08 22:43:08,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:08,820 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:08,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash 34936567, now seen corresponding path program 11 times [2025-01-08 22:43:08,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:08,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101893281] [2025-01-08 22:43:08,820 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:43:08,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:08,826 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 5 equivalence classes. [2025-01-08 22:43:08,833 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 41 of 41 statements. [2025-01-08 22:43:08,833 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-08 22:43:08,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 29 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:43:08,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:08,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101893281] [2025-01-08 22:43:08,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101893281] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:08,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118248160] [2025-01-08 22:43:08,943 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:43:08,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:08,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:08,944 INFO L229 MonitoredProcess]: Starting monitored process 20 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 22:43:08,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-08 22:43:09,006 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 5 equivalence classes. [2025-01-08 22:43:09,886 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 41 of 41 statements. [2025-01-08 22:43:09,887 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-01-08 22:43:09,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:09,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:43:09,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 37 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-08 22:43:09,977 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 37 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-01-08 22:43:10,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118248160] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:10,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:10,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 23 [2025-01-08 22:43:10,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763219444] [2025-01-08 22:43:10,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:10,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:43:10,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:10,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:43:10,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:43:10,075 INFO L87 Difference]: Start difference. First operand 136 states and 164 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:43:10,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:10,688 INFO L93 Difference]: Finished difference Result 264 states and 338 transitions. [2025-01-08 22:43:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-08 22:43:10,688 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2025-01-08 22:43:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:10,689 INFO L225 Difference]: With dead ends: 264 [2025-01-08 22:43:10,689 INFO L226 Difference]: Without dead ends: 224 [2025-01-08 22:43:10,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 65 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=416, Invalid=1476, Unknown=0, NotChecked=0, Total=1892 [2025-01-08 22:43:10,690 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 150 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:10,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 61 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:43:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2025-01-08 22:43:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 163. [2025-01-08 22:43:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.228395061728395) internal successors, (199), 162 states have internal predecessors, (199), 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 22:43:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 199 transitions. [2025-01-08 22:43:10,714 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 199 transitions. Word has length 41 [2025-01-08 22:43:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:10,715 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 199 transitions. [2025-01-08 22:43:10,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 23 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:43:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 199 transitions. [2025-01-08 22:43:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-01-08 22:43:10,715 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:10,715 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:10,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-01-08 22:43:10,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:10,916 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:10,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:10,916 INFO L85 PathProgramCache]: Analyzing trace with hash -866599430, now seen corresponding path program 12 times [2025-01-08 22:43:10,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:10,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590620738] [2025-01-08 22:43:10,916 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:43:10,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:10,925 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-01-08 22:43:10,939 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-01-08 22:43:10,946 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-08 22:43:10,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:43:11,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:11,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590620738] [2025-01-08 22:43:11,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590620738] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:11,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954502785] [2025-01-08 22:43:11,054 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:43:11,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:11,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:11,056 INFO L229 MonitoredProcess]: Starting monitored process 21 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 22:43:11,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-08 22:43:11,121 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 41 statements into 6 equivalence classes. [2025-01-08 22:43:11,166 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 41 of 41 statements. [2025-01-08 22:43:11,166 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-08 22:43:11,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:11,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:43:11,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:11,262 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:43:11,262 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:11,322 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 35 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:43:11,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954502785] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:11,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:11,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2025-01-08 22:43:11,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988296115] [2025-01-08 22:43:11,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:11,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:43:11,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:11,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:43:11,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:43:11,323 INFO L87 Difference]: Start difference. First operand 163 states and 199 transitions. Second operand has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 22:43:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:11,458 INFO L93 Difference]: Finished difference Result 197 states and 242 transitions. [2025-01-08 22:43:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:43:11,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 41 [2025-01-08 22:43:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:11,459 INFO L225 Difference]: With dead ends: 197 [2025-01-08 22:43:11,459 INFO L226 Difference]: Without dead ends: 165 [2025-01-08 22:43:11,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 66 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:43:11,461 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 79 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:11,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 30 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:43:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-01-08 22:43:11,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 134. [2025-01-08 22:43:11,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.263157894736842) internal successors, (168), 133 states have internal predecessors, (168), 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 22:43:11,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 168 transitions. [2025-01-08 22:43:11,482 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 168 transitions. Word has length 41 [2025-01-08 22:43:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:11,482 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 168 transitions. [2025-01-08 22:43:11,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 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 22:43:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 168 transitions. [2025-01-08 22:43:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:43:11,483 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:11,483 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:11,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-08 22:43:11,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:11,683 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:11,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2128616876, now seen corresponding path program 13 times [2025-01-08 22:43:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:11,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44848064] [2025-01-08 22:43:11,684 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:43:11,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:11,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-08 22:43:11,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:43:11,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:43:11,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:43:12,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44848064] [2025-01-08 22:43:12,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44848064] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:12,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926752391] [2025-01-08 22:43:12,297 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:43:12,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:12,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:12,299 INFO L229 MonitoredProcess]: Starting monitored process 22 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 22:43:12,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-08 22:43:12,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-01-08 22:43:12,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-01-08 22:43:12,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:43:12,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:12,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-01-08 22:43:12,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:12,385 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 22:43:12,459 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 22:43:12,512 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 22:43:12,581 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 22:43:12,667 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 22:43:12,760 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 22:43:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:43:12,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:13,376 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:43:13,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926752391] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:13,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:13,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 52 [2025-01-08 22:43:13,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764418789] [2025-01-08 22:43:13,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:13,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-08 22:43:13,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:13,377 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-08 22:43:13,378 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2475, Unknown=0, NotChecked=0, Total=2652 [2025-01-08 22:43:13,378 INFO L87 Difference]: Start difference. First operand 134 states and 168 transitions. Second operand has 52 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:43:15,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:15,867 INFO L93 Difference]: Finished difference Result 479 states and 625 transitions. [2025-01-08 22:43:15,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-01-08 22:43:15,867 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-01-08 22:43:15,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:15,869 INFO L225 Difference]: With dead ends: 479 [2025-01-08 22:43:15,869 INFO L226 Difference]: Without dead ends: 447 [2025-01-08 22:43:15,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=770, Invalid=10572, Unknown=0, NotChecked=0, Total=11342 [2025-01-08 22:43:15,870 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 74 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 3010 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 3184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 3010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:15,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 117 Invalid, 3184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 3010 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-01-08 22:43:15,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2025-01-08 22:43:15,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 331. [2025-01-08 22:43:15,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.309090909090909) internal successors, (432), 330 states have internal predecessors, (432), 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 22:43:15,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 432 transitions. [2025-01-08 22:43:15,937 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 432 transitions. Word has length 45 [2025-01-08 22:43:15,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:15,937 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 432 transitions. [2025-01-08 22:43:15,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.4615384615384615) internal successors, (76), 52 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:43:15,937 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 432 transitions. [2025-01-08 22:43:15,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:43:15,938 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:15,938 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:15,946 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-01-08 22:43:16,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-01-08 22:43:16,138 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:16,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1357003794, now seen corresponding path program 4 times [2025-01-08 22:43:16,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:16,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662790227] [2025-01-08 22:43:16,139 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:43:16,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:16,147 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-01-08 22:43:16,152 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 45 statements. [2025-01-08 22:43:16,152 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:43:16,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 63 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:43:16,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662790227] [2025-01-08 22:43:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662790227] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554730533] [2025-01-08 22:43:16,625 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:43:16,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:16,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:16,627 INFO L229 MonitoredProcess]: Starting monitored process 23 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 22:43:16,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-08 22:43:16,696 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-01-08 22:43:16,710 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 45 statements. [2025-01-08 22:43:16,711 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:43:16,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:16,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-08 22:43:16,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:16,783 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 23 treesize of output 13 [2025-01-08 22:43:16,829 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2025-01-08 22:43:16,829 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 2 case distinctions, treesize of input 35 treesize of output 26 [2025-01-08 22:43:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-08 22:43:16,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:17,215 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 53 treesize of output 47 [2025-01-08 22:43:17,225 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2025-01-08 22:43:17,225 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 144 treesize of output 114 [2025-01-08 22:43:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-01-08 22:43:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554730533] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:17,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:17,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 15] total 41 [2025-01-08 22:43:17,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997652178] [2025-01-08 22:43:17,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:17,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-08 22:43:17,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:17,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-08 22:43:17,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1417, Unknown=0, NotChecked=0, Total=1640 [2025-01-08 22:43:17,245 INFO L87 Difference]: Start difference. First operand 331 states and 432 transitions. Second operand has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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 22:43:17,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:17,895 INFO L93 Difference]: Finished difference Result 388 states and 505 transitions. [2025-01-08 22:43:17,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-08 22:43:17,895 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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 45 [2025-01-08 22:43:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:17,896 INFO L225 Difference]: With dead ends: 388 [2025-01-08 22:43:17,896 INFO L226 Difference]: Without dead ends: 308 [2025-01-08 22:43:17,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1259 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=656, Invalid=3766, Unknown=0, NotChecked=0, Total=4422 [2025-01-08 22:43:17,897 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 54 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:17,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 83 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:43:17,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-01-08 22:43:17,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 289. [2025-01-08 22:43:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.2604166666666667) internal successors, (363), 288 states have internal predecessors, (363), 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 22:43:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 363 transitions. [2025-01-08 22:43:17,959 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 363 transitions. Word has length 45 [2025-01-08 22:43:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:17,959 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 363 transitions. [2025-01-08 22:43:17,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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 22:43:17,959 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 363 transitions. [2025-01-08 22:43:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-01-08 22:43:17,959 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:17,959 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:17,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-08 22:43:18,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-08 22:43:18,160 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:18,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1704068008, now seen corresponding path program 4 times [2025-01-08 22:43:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:18,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535826581] [2025-01-08 22:43:18,160 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:43:18,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:18,167 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-01-08 22:43:18,174 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 45 statements. [2025-01-08 22:43:18,174 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:43:18,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2025-01-08 22:43:18,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:18,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535826581] [2025-01-08 22:43:18,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535826581] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:18,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854627852] [2025-01-08 22:43:18,353 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:43:18,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:18,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:18,355 INFO L229 MonitoredProcess]: Starting monitored process 24 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 22:43:18,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-08 22:43:18,424 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-01-08 22:43:18,438 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 41 of 45 statements. [2025-01-08 22:43:18,438 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:43:18,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:18,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-08 22:43:18,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:18,443 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 15 treesize of output 11 [2025-01-08 22:43:18,491 INFO L349 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2025-01-08 22:43:18,491 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 2 case distinctions, treesize of input 30 treesize of output 37 [2025-01-08 22:43:18,558 INFO L349 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2025-01-08 22:43:18,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 58 [2025-01-08 22:43:18,649 INFO L349 Elim1Store]: treesize reduction 35, result has 41.7 percent of original size [2025-01-08 22:43:18,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 69 treesize of output 80 [2025-01-08 22:43:18,779 INFO L349 Elim1Store]: treesize reduction 43, result has 36.8 percent of original size [2025-01-08 22:43:18,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 88 treesize of output 102 [2025-01-08 22:43:18,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:18,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 15 [2025-01-08 22:43:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-08 22:43:18,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 35 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-08 22:43:19,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854627852] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:19,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:19,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 11] total 26 [2025-01-08 22:43:19,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213141392] [2025-01-08 22:43:19,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:19,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-08 22:43:19,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:19,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-08 22:43:19,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:43:19,077 INFO L87 Difference]: Start difference. First operand 289 states and 363 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 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 22:43:19,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:19,843 INFO L93 Difference]: Finished difference Result 318 states and 393 transitions. [2025-01-08 22:43:19,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-01-08 22:43:19,844 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 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 45 [2025-01-08 22:43:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:19,845 INFO L225 Difference]: With dead ends: 318 [2025-01-08 22:43:19,845 INFO L226 Difference]: Without dead ends: 234 [2025-01-08 22:43:19,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=623, Invalid=2029, Unknown=0, NotChecked=0, Total=2652 [2025-01-08 22:43:19,846 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 40 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:19,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 61 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:43:19,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2025-01-08 22:43:19,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 204. [2025-01-08 22:43:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.2315270935960592) internal successors, (250), 203 states have internal predecessors, (250), 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 22:43:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 250 transitions. [2025-01-08 22:43:19,897 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 250 transitions. Word has length 45 [2025-01-08 22:43:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:19,898 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 250 transitions. [2025-01-08 22:43:19,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 26 states have internal predecessors, (55), 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 22:43:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 250 transitions. [2025-01-08 22:43:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-01-08 22:43:19,898 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:19,898 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:19,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-08 22:43:20,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-01-08 22:43:20,099 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:20,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:20,099 INFO L85 PathProgramCache]: Analyzing trace with hash -57389350, now seen corresponding path program 14 times [2025-01-08 22:43:20,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:20,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512271370] [2025-01-08 22:43:20,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:43:20,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:20,105 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-01-08 22:43:20,110 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-01-08 22:43:20,110 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:43:20,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 10 proven. 46 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:43:20,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512271370] [2025-01-08 22:43:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512271370] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713150930] [2025-01-08 22:43:20,208 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:43:20,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:20,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:20,210 INFO L229 MonitoredProcess]: Starting monitored process 25 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 22:43:20,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-08 22:43:20,282 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-01-08 22:43:20,302 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 46 of 46 statements. [2025-01-08 22:43:20,302 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:43:20,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:20,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:43:20,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:43:20,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 41 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:43:20,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713150930] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:20,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:20,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-01-08 22:43:20,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844236823] [2025-01-08 22:43:20,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:20,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:43:20,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:20,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:43:20,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:43:20,473 INFO L87 Difference]: Start difference. First operand 204 states and 250 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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 22:43:20,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:20,786 INFO L93 Difference]: Finished difference Result 253 states and 305 transitions. [2025-01-08 22:43:20,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-08 22:43:20,787 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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 46 [2025-01-08 22:43:20,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:20,787 INFO L225 Difference]: With dead ends: 253 [2025-01-08 22:43:20,787 INFO L226 Difference]: Without dead ends: 232 [2025-01-08 22:43:20,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 72 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2025-01-08 22:43:20,788 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 99 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:20,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 43 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:43:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2025-01-08 22:43:20,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 185. [2025-01-08 22:43:20,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.233695652173913) internal successors, (227), 184 states have internal predecessors, (227), 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 22:43:20,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 227 transitions. [2025-01-08 22:43:20,827 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 227 transitions. Word has length 46 [2025-01-08 22:43:20,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:20,827 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 227 transitions. [2025-01-08 22:43:20,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 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 22:43:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 227 transitions. [2025-01-08 22:43:20,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-01-08 22:43:20,827 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:20,827 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:20,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-08 22:43:21,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-08 22:43:21,028 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:21,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:21,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1300635715, now seen corresponding path program 15 times [2025-01-08 22:43:21,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:21,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912949354] [2025-01-08 22:43:21,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:43:21,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:21,036 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 7 equivalence classes. [2025-01-08 22:43:21,056 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:43:21,056 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:43:21,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 38 proven. 28 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-01-08 22:43:21,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:21,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912949354] [2025-01-08 22:43:21,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912949354] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:21,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797132353] [2025-01-08 22:43:21,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:43:21,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:21,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:21,185 INFO L229 MonitoredProcess]: Starting monitored process 26 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 22:43:21,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-08 22:43:21,259 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 7 equivalence classes. [2025-01-08 22:43:21,309 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:43:21,310 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-01-08 22:43:21,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:21,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-08 22:43:21,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 64 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:43:21,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:43:21,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797132353] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:21,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:21,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 16] total 28 [2025-01-08 22:43:21,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513241136] [2025-01-08 22:43:21,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:21,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-08 22:43:21,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:21,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-08 22:43:21,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:43:21,530 INFO L87 Difference]: Start difference. First operand 185 states and 227 transitions. Second operand has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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 22:43:21,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:21,793 INFO L93 Difference]: Finished difference Result 258 states and 310 transitions. [2025-01-08 22:43:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-08 22:43:21,793 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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 48 [2025-01-08 22:43:21,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:21,794 INFO L225 Difference]: With dead ends: 258 [2025-01-08 22:43:21,794 INFO L226 Difference]: Without dead ends: 128 [2025-01-08 22:43:21,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 73 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=453, Invalid=1353, Unknown=0, NotChecked=0, Total=1806 [2025-01-08 22:43:21,795 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 148 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:21,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 42 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:43:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-01-08 22:43:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 119. [2025-01-08 22:43:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.2033898305084745) internal successors, (142), 118 states have internal predecessors, (142), 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 22:43:21,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2025-01-08 22:43:21,820 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 48 [2025-01-08 22:43:21,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:21,820 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2025-01-08 22:43:21,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 states have internal predecessors, (69), 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 22:43:21,820 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2025-01-08 22:43:21,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-08 22:43:21,820 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:21,820 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:21,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-01-08 22:43:22,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-01-08 22:43:22,021 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:22,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2143410659, now seen corresponding path program 16 times [2025-01-08 22:43:22,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:22,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334055403] [2025-01-08 22:43:22,021 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:43:22,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:22,028 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:43:22,036 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:43:22,037 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:43:22,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:43:22,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:22,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334055403] [2025-01-08 22:43:22,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334055403] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:22,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255904970] [2025-01-08 22:43:22,921 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:43:22,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:22,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:22,923 INFO L229 MonitoredProcess]: Starting monitored process 27 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 22:43:22,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-08 22:43:23,009 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:43:23,057 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:43:23,057 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:43:23,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:23,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-01-08 22:43:23,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:23,064 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 22:43:23,287 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 22:43:23,359 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 22:43:23,469 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 22:43:23,570 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 22:43:23,688 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 22:43:23,847 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 22:43:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:43:23,929 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:43:24,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255904970] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:24,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:24,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23, 23] total 67 [2025-01-08 22:43:24,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924510177] [2025-01-08 22:43:24,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:24,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-01-08 22:43:24,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:24,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-01-08 22:43:24,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=4191, Unknown=0, NotChecked=0, Total=4422 [2025-01-08 22:43:24,846 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand has 67 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 67 states have internal predecessors, (94), 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 22:43:28,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:28,161 INFO L93 Difference]: Finished difference Result 271 states and 330 transitions. [2025-01-08 22:43:28,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2025-01-08 22:43:28,161 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 67 states have internal predecessors, (94), 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 52 [2025-01-08 22:43:28,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:28,162 INFO L225 Difference]: With dead ends: 271 [2025-01-08 22:43:28,162 INFO L226 Difference]: Without dead ends: 256 [2025-01-08 22:43:28,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4068 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=914, Invalid=15088, Unknown=0, NotChecked=0, Total=16002 [2025-01-08 22:43:28,163 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 75 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 3727 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 3883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:28,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 134 Invalid, 3883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3727 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-01-08 22:43:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2025-01-08 22:43:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 176. [2025-01-08 22:43:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.2285714285714286) internal successors, (215), 175 states have internal predecessors, (215), 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 22:43:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 215 transitions. [2025-01-08 22:43:28,209 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 215 transitions. Word has length 52 [2025-01-08 22:43:28,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:28,209 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 215 transitions. [2025-01-08 22:43:28,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 67 states have internal predecessors, (94), 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 22:43:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 215 transitions. [2025-01-08 22:43:28,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-08 22:43:28,209 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:28,210 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:28,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-01-08 22:43:28,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-08 22:43:28,410 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:28,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:28,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1342210011, now seen corresponding path program 5 times [2025-01-08 22:43:28,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:28,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498502872] [2025-01-08 22:43:28,410 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:43:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:28,417 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 7 equivalence classes. [2025-01-08 22:43:28,427 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:43:28,427 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-08 22:43:28,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 23 proven. 77 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-08 22:43:28,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498502872] [2025-01-08 22:43:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498502872] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036489536] [2025-01-08 22:43:28,685 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:43:28,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:28,687 INFO L229 MonitoredProcess]: Starting monitored process 28 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 22:43:28,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-08 22:43:28,765 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 7 equivalence classes. [2025-01-08 22:43:29,276 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:43:29,277 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-08 22:43:29,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:29,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-01-08 22:43:29,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:29,397 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 22:43:29,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:29,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:29,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2025-01-08 22:43:29,554 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 23 proven. 95 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:43:29,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:30,124 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 53 treesize of output 47 [2025-01-08 22:43:30,134 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2025-01-08 22:43:30,135 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 72 treesize of output 58 [2025-01-08 22:43:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 23 proven. 76 refuted. 1 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-08 22:43:30,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036489536] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:30,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:30,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 34 [2025-01-08 22:43:30,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695069015] [2025-01-08 22:43:30,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:30,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-08 22:43:30,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:30,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-08 22:43:30,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=989, Unknown=1, NotChecked=0, Total=1122 [2025-01-08 22:43:30,156 INFO L87 Difference]: Start difference. First operand 176 states and 215 transitions. Second operand has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 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 22:43:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:30,627 INFO L93 Difference]: Finished difference Result 252 states and 310 transitions. [2025-01-08 22:43:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-08 22:43:30,627 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 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 52 [2025-01-08 22:43:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:30,628 INFO L225 Difference]: With dead ends: 252 [2025-01-08 22:43:30,628 INFO L226 Difference]: Without dead ends: 241 [2025-01-08 22:43:30,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=156, Invalid=1175, Unknown=1, NotChecked=0, Total=1332 [2025-01-08 22:43:30,629 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 77 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:30,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 146 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:43:30,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2025-01-08 22:43:30,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 203. [2025-01-08 22:43:30,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.2425742574257426) internal successors, (251), 202 states have internal predecessors, (251), 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 22:43:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 251 transitions. [2025-01-08 22:43:30,693 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 251 transitions. Word has length 52 [2025-01-08 22:43:30,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:30,693 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 251 transitions. [2025-01-08 22:43:30,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6470588235294117) internal successors, (90), 34 states have internal predecessors, (90), 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 22:43:30,693 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 251 transitions. [2025-01-08 22:43:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-08 22:43:30,693 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:30,693 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:30,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-01-08 22:43:30,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-01-08 22:43:30,894 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:30,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1029529251, now seen corresponding path program 5 times [2025-01-08 22:43:30,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:30,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779138616] [2025-01-08 22:43:30,894 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:43:30,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:30,904 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 7 equivalence classes. [2025-01-08 22:43:30,921 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:43:30,921 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-08 22:43:30,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-01-08 22:43:31,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:31,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779138616] [2025-01-08 22:43:31,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779138616] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:31,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031913992] [2025-01-08 22:43:31,260 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:43:31,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:31,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:31,261 INFO L229 MonitoredProcess]: Starting monitored process 29 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 22:43:31,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-01-08 22:43:31,340 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 52 statements into 7 equivalence classes. [2025-01-08 22:43:31,886 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 52 of 52 statements. [2025-01-08 22:43:31,886 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-08 22:43:31,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:31,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-08 22:43:31,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:31,899 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 13 treesize of output 9 [2025-01-08 22:43:31,918 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2025-01-08 22:43:31,918 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 1 case distinctions, treesize of input 25 treesize of output 24 [2025-01-08 22:43:31,973 INFO L349 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2025-01-08 22:43:31,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 36 [2025-01-08 22:43:32,014 INFO L349 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2025-01-08 22:43:32,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 38 [2025-01-08 22:43:32,062 INFO L349 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2025-01-08 22:43:32,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 38 [2025-01-08 22:43:32,107 INFO L349 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2025-01-08 22:43:32,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 38 [2025-01-08 22:43:32,141 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2025-01-08 22:43:32,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 7 [2025-01-08 22:43:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-01-08 22:43:32,142 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:32,175 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 23 treesize of output 21 [2025-01-08 22:43:32,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 21 [2025-01-08 22:43:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 24 proven. 46 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-01-08 22:43:32,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031913992] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:32,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:32,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-01-08 22:43:32,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872605618] [2025-01-08 22:43:32,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:32,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:43:32,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:32,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:43:32,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:43:32,184 INFO L87 Difference]: Start difference. First operand 203 states and 251 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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 22:43:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:32,462 INFO L93 Difference]: Finished difference Result 220 states and 270 transitions. [2025-01-08 22:43:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:43:32,462 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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 52 [2025-01-08 22:43:32,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:32,463 INFO L225 Difference]: With dead ends: 220 [2025-01-08 22:43:32,463 INFO L226 Difference]: Without dead ends: 117 [2025-01-08 22:43:32,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2025-01-08 22:43:32,463 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:32,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 90 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:43:32,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-01-08 22:43:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-01-08 22:43:32,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.1810344827586208) internal successors, (137), 116 states have internal predecessors, (137), 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 22:43:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 137 transitions. [2025-01-08 22:43:32,490 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 137 transitions. Word has length 52 [2025-01-08 22:43:32,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:32,491 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 137 transitions. [2025-01-08 22:43:32,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 23 states have internal predecessors, (55), 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 22:43:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 137 transitions. [2025-01-08 22:43:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-01-08 22:43:32,491 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:32,491 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:32,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-01-08 22:43:32,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:32,692 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:32,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:32,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1334289446, now seen corresponding path program 17 times [2025-01-08 22:43:32,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:32,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406960763] [2025-01-08 22:43:32,692 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:43:32,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:32,699 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 8 equivalence classes. [2025-01-08 22:43:32,708 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 55 of 55 statements. [2025-01-08 22:43:32,708 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-08 22:43:32,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 70 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:43:32,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:32,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406960763] [2025-01-08 22:43:32,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406960763] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:32,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913904592] [2025-01-08 22:43:32,859 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:43:32,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:32,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:32,861 INFO L229 MonitoredProcess]: Starting monitored process 30 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 22:43:32,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-01-08 22:43:32,956 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 8 equivalence classes. [2025-01-08 22:43:33,391 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 55 of 55 statements. [2025-01-08 22:43:33,392 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-01-08 22:43:33,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:33,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-08 22:43:33,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:33,514 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 70 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:43:33,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 70 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-08 22:43:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913904592] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:33,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 24 [2025-01-08 22:43:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417325775] [2025-01-08 22:43:33,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:33,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-01-08 22:43:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:33,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-01-08 22:43:33,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:43:33,615 INFO L87 Difference]: Start difference. First operand 117 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.5) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:43:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:33,798 INFO L93 Difference]: Finished difference Result 184 states and 214 transitions. [2025-01-08 22:43:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-08 22:43:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-01-08 22:43:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:33,799 INFO L225 Difference]: With dead ends: 184 [2025-01-08 22:43:33,799 INFO L226 Difference]: Without dead ends: 85 [2025-01-08 22:43:33,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 14 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2025-01-08 22:43:33,799 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 155 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:33,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 39 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:43:33,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-01-08 22:43:33,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2025-01-08 22:43:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 72 states have internal predecessors, (84), 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 22:43:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2025-01-08 22:43:33,816 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 55 [2025-01-08 22:43:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:33,816 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2025-01-08 22:43:33,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5) internal successors, (60), 24 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:43:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2025-01-08 22:43:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-08 22:43:33,816 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:33,816 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:33,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-01-08 22:43:34,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:34,017 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:34,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:34,017 INFO L85 PathProgramCache]: Analyzing trace with hash 258173236, now seen corresponding path program 18 times [2025-01-08 22:43:34,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:34,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974533572] [2025-01-08 22:43:34,017 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:43:34,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:34,026 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 8 equivalence classes. [2025-01-08 22:43:34,046 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 59 of 59 statements. [2025-01-08 22:43:34,046 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-01-08 22:43:34,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-01-08 22:43:34,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974533572] [2025-01-08 22:43:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974533572] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4487649] [2025-01-08 22:43:34,591 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:43:34,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:34,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:34,594 INFO L229 MonitoredProcess]: Starting monitored process 31 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 22:43:34,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-01-08 22:43:34,691 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 8 equivalence classes. [2025-01-08 22:43:35,076 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 59 of 59 statements. [2025-01-08 22:43:35,076 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-01-08 22:43:35,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:35,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 91 conjuncts are in the unsatisfiable core [2025-01-08 22:43:35,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:35,083 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 22:43:35,158 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 22:43:35,194 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 22:43:35,259 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 22:43:35,338 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 22:43:35,435 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 22:43:35,545 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 22:43:35,711 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 22:43:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-01-08 22:43:35,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:36,700 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2025-01-08 22:43:36,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 91 treesize of output 29 [2025-01-08 22:43:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-01-08 22:43:36,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4487649] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:36,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:36,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 28, 29] total 62 [2025-01-08 22:43:36,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482953144] [2025-01-08 22:43:36,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:36,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-01-08 22:43:36,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:36,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-01-08 22:43:36,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=3316, Unknown=0, NotChecked=0, Total=3782 [2025-01-08 22:43:36,866 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand has 62 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 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 22:43:38,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:38,432 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2025-01-08 22:43:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-01-08 22:43:38,432 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 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 59 [2025-01-08 22:43:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:38,433 INFO L225 Difference]: With dead ends: 125 [2025-01-08 22:43:38,433 INFO L226 Difference]: Without dead ends: 121 [2025-01-08 22:43:38,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1172, Invalid=8140, Unknown=0, NotChecked=0, Total=9312 [2025-01-08 22:43:38,434 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:38,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 98 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-08 22:43:38,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-01-08 22:43:38,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 88. [2025-01-08 22:43:38,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1724137931034482) internal successors, (102), 87 states have internal predecessors, (102), 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 22:43:38,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2025-01-08 22:43:38,461 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 59 [2025-01-08 22:43:38,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:38,461 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2025-01-08 22:43:38,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 62 states have internal predecessors, (83), 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 22:43:38,461 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2025-01-08 22:43:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-08 22:43:38,461 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:38,461 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:38,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-01-08 22:43:38,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-01-08 22:43:38,662 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:38,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:38,662 INFO L85 PathProgramCache]: Analyzing trace with hash -551173390, now seen corresponding path program 6 times [2025-01-08 22:43:38,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:38,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348110543] [2025-01-08 22:43:38,662 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:43:38,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:38,671 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 8 equivalence classes. [2025-01-08 22:43:38,685 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 52 of 59 statements. [2025-01-08 22:43:38,686 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:43:38,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-01-08 22:43:38,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:38,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348110543] [2025-01-08 22:43:38,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348110543] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:38,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351131860] [2025-01-08 22:43:38,949 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:43:38,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:38,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:38,952 INFO L229 MonitoredProcess]: Starting monitored process 32 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 22:43:38,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-01-08 22:43:39,051 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 8 equivalence classes. [2025-01-08 22:43:39,259 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 52 of 59 statements. [2025-01-08 22:43:39,259 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-08 22:43:39,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:39,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-08 22:43:39,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:39,278 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 27 treesize of output 15 [2025-01-08 22:43:39,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:39,321 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 38 treesize of output 29 [2025-01-08 22:43:39,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:39,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 17 [2025-01-08 22:43:39,379 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 32 proven. 38 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-01-08 22:43:39,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 32 proven. 38 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-01-08 22:43:39,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351131860] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:39,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:39,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 20 [2025-01-08 22:43:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861974994] [2025-01-08 22:43:39,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:39,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-08 22:43:39,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:39,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-08 22:43:39,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2025-01-08 22:43:39,441 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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 22:43:39,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:39,809 INFO L93 Difference]: Finished difference Result 159 states and 186 transitions. [2025-01-08 22:43:39,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-08 22:43:39,810 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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 59 [2025-01-08 22:43:39,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:39,810 INFO L225 Difference]: With dead ends: 159 [2025-01-08 22:43:39,810 INFO L226 Difference]: Without dead ends: 156 [2025-01-08 22:43:39,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=266, Invalid=994, Unknown=0, NotChecked=0, Total=1260 [2025-01-08 22:43:39,811 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:39,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 77 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:43:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-01-08 22:43:39,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2025-01-08 22:43:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.204724409448819) internal successors, (153), 127 states have internal predecessors, (153), 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 22:43:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 153 transitions. [2025-01-08 22:43:39,853 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 153 transitions. Word has length 59 [2025-01-08 22:43:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:39,853 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 153 transitions. [2025-01-08 22:43:39,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 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 22:43:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 153 transitions. [2025-01-08 22:43:39,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-08 22:43:39,853 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:39,853 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:39,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2025-01-08 22:43:40,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-01-08 22:43:40,058 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:40,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:40,058 INFO L85 PathProgramCache]: Analyzing trace with hash -528541136, now seen corresponding path program 6 times [2025-01-08 22:43:40,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:40,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662871809] [2025-01-08 22:43:40,058 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:43:40,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:40,070 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 8 equivalence classes. [2025-01-08 22:43:40,110 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 59 of 59 statements. [2025-01-08 22:43:40,110 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-01-08 22:43:40,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 66 proven. 87 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-08 22:43:40,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662871809] [2025-01-08 22:43:40,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662871809] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224456289] [2025-01-08 22:43:40,762 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:43:40,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:40,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:40,764 INFO L229 MonitoredProcess]: Starting monitored process 33 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 22:43:40,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-01-08 22:43:40,856 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 8 equivalence classes. [2025-01-08 22:43:41,312 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 59 of 59 statements. [2025-01-08 22:43:41,312 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-01-08 22:43:41,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:41,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 83 conjuncts are in the unsatisfiable core [2025-01-08 22:43:41,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:41,397 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 22:43:41,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 22:43:41,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:41,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 34 [2025-01-08 22:43:41,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:41,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 34 [2025-01-08 22:43:41,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:41,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 34 [2025-01-08 22:43:41,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:41,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 34 [2025-01-08 22:43:41,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:41,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 34 [2025-01-08 22:43:41,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,759 INFO L349 Elim1Store]: treesize reduction 52, result has 35.8 percent of original size [2025-01-08 22:43:41,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 50 [2025-01-08 22:43:41,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:41,906 INFO L349 Elim1Store]: treesize reduction 34, result has 58.0 percent of original size [2025-01-08 22:43:41,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 52 treesize of output 79 [2025-01-08 22:43:46,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:46,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:46,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:46,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:46,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:46,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:46,789 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:46,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 45 treesize of output 17 [2025-01-08 22:43:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 2 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:43:46,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:48,776 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 67 treesize of output 59 [2025-01-08 22:43:48,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:48,782 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 62 treesize of output 46 [2025-01-08 22:43:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 15 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:43:49,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224456289] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:49,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:49,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 36, 40] total 95 [2025-01-08 22:43:49,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248507507] [2025-01-08 22:43:49,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:49,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2025-01-08 22:43:49,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:49,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2025-01-08 22:43:49,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=7549, Unknown=1, NotChecked=0, Total=8930 [2025-01-08 22:43:49,057 INFO L87 Difference]: Start difference. First operand 128 states and 153 transitions. Second operand has 95 states, 95 states have (on average 1.694736842105263) internal successors, (161), 95 states have internal predecessors, (161), 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 22:43:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:54,050 INFO L93 Difference]: Finished difference Result 284 states and 343 transitions. [2025-01-08 22:43:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-01-08 22:43:54,051 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 1.694736842105263) internal successors, (161), 95 states have internal predecessors, (161), 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 59 [2025-01-08 22:43:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:54,051 INFO L225 Difference]: With dead ends: 284 [2025-01-08 22:43:54,051 INFO L226 Difference]: Without dead ends: 199 [2025-01-08 22:43:54,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8655 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=3720, Invalid=22039, Unknown=1, NotChecked=0, Total=25760 [2025-01-08 22:43:54,053 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 233 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:54,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 125 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-01-08 22:43:54,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2025-01-08 22:43:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 128. [2025-01-08 22:43:54,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 127 states have internal predecessors, (152), 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 22:43:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2025-01-08 22:43:54,101 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 59 [2025-01-08 22:43:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:54,101 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2025-01-08 22:43:54,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 1.694736842105263) internal successors, (161), 95 states have internal predecessors, (161), 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 22:43:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2025-01-08 22:43:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-08 22:43:54,105 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:54,106 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:54,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-01-08 22:43:54,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2025-01-08 22:43:54,306 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:54,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:54,306 INFO L85 PathProgramCache]: Analyzing trace with hash -612625691, now seen corresponding path program 7 times [2025-01-08 22:43:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:54,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381249167] [2025-01-08 22:43:54,307 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:43:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:54,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-08 22:43:54,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-08 22:43:54,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:43:54,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 73 proven. 47 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-01-08 22:43:54,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:54,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381249167] [2025-01-08 22:43:54,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381249167] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:54,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594497041] [2025-01-08 22:43:54,503 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:43:54,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:54,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:54,505 INFO L229 MonitoredProcess]: Starting monitored process 34 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 22:43:54,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-01-08 22:43:54,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-08 22:43:54,622 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-08 22:43:54,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:43:54,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:54,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-08 22:43:54,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 92 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-01-08 22:43:54,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 92 proven. 28 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-01-08 22:43:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594497041] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:54,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2025-01-08 22:43:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227265721] [2025-01-08 22:43:54,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:54,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-08 22:43:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:54,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-08 22:43:54,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:43:54,919 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 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 22:43:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:55,223 INFO L93 Difference]: Finished difference Result 341 states and 412 transitions. [2025-01-08 22:43:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-08 22:43:55,224 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 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 62 [2025-01-08 22:43:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:55,225 INFO L225 Difference]: With dead ends: 341 [2025-01-08 22:43:55,225 INFO L226 Difference]: Without dead ends: 192 [2025-01-08 22:43:55,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 15 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2025-01-08 22:43:55,225 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 181 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:55,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 41 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:43:55,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2025-01-08 22:43:55,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 132. [2025-01-08 22:43:55,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.1984732824427482) internal successors, (157), 131 states have internal predecessors, (157), 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 22:43:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 157 transitions. [2025-01-08 22:43:55,269 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 157 transitions. Word has length 62 [2025-01-08 22:43:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:55,269 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 157 transitions. [2025-01-08 22:43:55,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 29 states have internal predecessors, (73), 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 22:43:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 157 transitions. [2025-01-08 22:43:55,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-01-08 22:43:55,270 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:55,270 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:55,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-01-08 22:43:55,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:55,470 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:55,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:55,471 INFO L85 PathProgramCache]: Analyzing trace with hash -631199338, now seen corresponding path program 7 times [2025-01-08 22:43:55,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:55,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747571342] [2025-01-08 22:43:55,471 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:43:55,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:55,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-08 22:43:55,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-08 22:43:55,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:43:55,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 21 proven. 85 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-08 22:43:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747571342] [2025-01-08 22:43:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747571342] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125919774] [2025-01-08 22:43:55,683 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:43:55,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:55,685 INFO L229 MonitoredProcess]: Starting monitored process 35 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 22:43:55,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-01-08 22:43:55,786 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-01-08 22:43:55,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-01-08 22:43:55,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:43:55,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:55,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-08 22:43:55,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 28 proven. 78 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-08 22:43:55,967 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 28 proven. 78 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-08 22:43:56,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125919774] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:56,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:56,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2025-01-08 22:43:56,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122867461] [2025-01-08 22:43:56,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:56,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-08 22:43:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:56,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-08 22:43:56,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:43:56,121 INFO L87 Difference]: Start difference. First operand 132 states and 157 transitions. Second operand has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 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 22:43:56,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:43:56,460 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2025-01-08 22:43:56,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-08 22:43:56,461 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 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 63 [2025-01-08 22:43:56,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:43:56,461 INFO L225 Difference]: With dead ends: 192 [2025-01-08 22:43:56,462 INFO L226 Difference]: Without dead ends: 189 [2025-01-08 22:43:56,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 100 SyntacticMatches, 16 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2025-01-08 22:43:56,462 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 144 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:43:56,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 54 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:43:56,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-01-08 22:43:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 141. [2025-01-08 22:43:56,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.207142857142857) internal successors, (169), 140 states have internal predecessors, (169), 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 22:43:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 169 transitions. [2025-01-08 22:43:56,510 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 169 transitions. Word has length 63 [2025-01-08 22:43:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:43:56,510 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 169 transitions. [2025-01-08 22:43:56,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 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 22:43:56,510 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 169 transitions. [2025-01-08 22:43:56,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-08 22:43:56,511 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:43:56,511 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:43:56,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-01-08 22:43:56,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:56,711 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:43:56,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:43:56,711 INFO L85 PathProgramCache]: Analyzing trace with hash -886406721, now seen corresponding path program 8 times [2025-01-08 22:43:56,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:43:56,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460115770] [2025-01-08 22:43:56,712 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:43:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:43:56,720 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-01-08 22:43:56,736 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-01-08 22:43:56,736 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:43:56,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 46 proven. 167 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-08 22:43:57,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:43:57,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460115770] [2025-01-08 22:43:57,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460115770] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:43:57,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553655341] [2025-01-08 22:43:57,430 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:43:57,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:43:57,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:43:57,432 INFO L229 MonitoredProcess]: Starting monitored process 36 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 22:43:57,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-01-08 22:43:57,541 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-01-08 22:43:57,568 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-01-08 22:43:57,569 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:43:57,569 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:43:57,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-01-08 22:43:57,572 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:43:57,775 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 22:43:57,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:57,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:57,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2025-01-08 22:43:57,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:43:57,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:43:57,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2025-01-08 22:43:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 47 proven. 160 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-01-08 22:43:58,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:43:59,280 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 53 treesize of output 47 [2025-01-08 22:43:59,293 INFO L349 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2025-01-08 22:43:59,293 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 144 treesize of output 114 [2025-01-08 22:43:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 46 proven. 130 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-01-08 22:43:59,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553655341] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:43:59,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:43:59,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 20] total 53 [2025-01-08 22:43:59,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009756322] [2025-01-08 22:43:59,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:43:59,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-01-08 22:43:59,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:43:59,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-01-08 22:43:59,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2473, Unknown=0, NotChecked=0, Total=2756 [2025-01-08 22:43:59,315 INFO L87 Difference]: Start difference. First operand 141 states and 169 transitions. Second operand has 53 states, 53 states have (on average 2.6792452830188678) internal successors, (142), 53 states have internal predecessors, (142), 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 22:44:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:00,528 INFO L93 Difference]: Finished difference Result 178 states and 215 transitions. [2025-01-08 22:44:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-08 22:44:00,528 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.6792452830188678) internal successors, (142), 53 states have internal predecessors, (142), 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 66 [2025-01-08 22:44:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:00,529 INFO L225 Difference]: With dead ends: 178 [2025-01-08 22:44:00,529 INFO L226 Difference]: Without dead ends: 159 [2025-01-08 22:44:00,530 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=777, Invalid=6029, Unknown=0, NotChecked=0, Total=6806 [2025-01-08 22:44:00,530 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 131 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1625 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:00,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 127 Invalid, 1661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1625 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-08 22:44:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-01-08 22:44:00,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 144. [2025-01-08 22:44:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.1818181818181819) internal successors, (169), 143 states have internal predecessors, (169), 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 22:44:00,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2025-01-08 22:44:00,597 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 66 [2025-01-08 22:44:00,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:00,597 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2025-01-08 22:44:00,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.6792452830188678) internal successors, (142), 53 states have internal predecessors, (142), 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 22:44:00,597 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2025-01-08 22:44:00,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-08 22:44:00,598 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:00,598 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:00,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-01-08 22:44:00,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-01-08 22:44:00,799 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:00,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:00,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1825762813, now seen corresponding path program 8 times [2025-01-08 22:44:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:00,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273822442] [2025-01-08 22:44:00,799 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:00,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:00,808 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-01-08 22:44:00,824 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-01-08 22:44:00,824 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:00,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 21 proven. 107 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-01-08 22:44:01,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273822442] [2025-01-08 22:44:01,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273822442] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:01,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528502430] [2025-01-08 22:44:01,441 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:44:01,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:01,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:01,443 INFO L229 MonitoredProcess]: Starting monitored process 37 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 22:44:01,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-01-08 22:44:01,562 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 66 statements into 2 equivalence classes. [2025-01-08 22:44:01,593 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 66 of 66 statements. [2025-01-08 22:44:01,593 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:44:01,593 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:01,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-01-08 22:44:01,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:01,716 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 22:44:01,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-01-08 22:44:01,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:01,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2025-01-08 22:44:01,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:01,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2025-01-08 22:44:01,884 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:01,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2025-01-08 22:44:01,927 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:01,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2025-01-08 22:44:01,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:01,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2025-01-08 22:44:02,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:02,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2025-01-08 22:44:02,071 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 33 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-01-08 22:44:02,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:02,292 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 24 treesize of output 22 [2025-01-08 22:44:02,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 21 [2025-01-08 22:44:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 34 proven. 92 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-01-08 22:44:02,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528502430] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:02,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:02,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 56 [2025-01-08 22:44:02,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762076163] [2025-01-08 22:44:02,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:02,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-01-08 22:44:02,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:02,473 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-01-08 22:44:02,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=2742, Unknown=0, NotChecked=0, Total=3080 [2025-01-08 22:44:02,474 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand has 56 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 56 states have internal predecessors, (110), 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 22:44:03,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:03,539 INFO L93 Difference]: Finished difference Result 256 states and 306 transitions. [2025-01-08 22:44:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-08 22:44:03,540 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 56 states have internal predecessors, (110), 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 66 [2025-01-08 22:44:03,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:03,540 INFO L225 Difference]: With dead ends: 256 [2025-01-08 22:44:03,540 INFO L226 Difference]: Without dead ends: 159 [2025-01-08 22:44:03,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=731, Invalid=5911, Unknown=0, NotChecked=0, Total=6642 [2025-01-08 22:44:03,541 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 94 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:03,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 116 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-08 22:44:03,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-01-08 22:44:03,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 145. [2025-01-08 22:44:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.1736111111111112) internal successors, (169), 144 states have internal predecessors, (169), 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 22:44:03,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 169 transitions. [2025-01-08 22:44:03,592 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 169 transitions. Word has length 66 [2025-01-08 22:44:03,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:03,592 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 169 transitions. [2025-01-08 22:44:03,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.9642857142857142) internal successors, (110), 56 states have internal predecessors, (110), 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 22:44:03,593 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 169 transitions. [2025-01-08 22:44:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-01-08 22:44:03,593 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:03,593 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:03,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2025-01-08 22:44:03,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-01-08 22:44:03,793 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:03,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash -37644484, now seen corresponding path program 9 times [2025-01-08 22:44:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:03,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131379455] [2025-01-08 22:44:03,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:03,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:03,803 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 69 statements into 10 equivalence classes. [2025-01-08 22:44:03,814 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 48 of 69 statements. [2025-01-08 22:44:03,814 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:44:03,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 56 proven. 81 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2025-01-08 22:44:04,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:04,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131379455] [2025-01-08 22:44:04,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131379455] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:04,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810179112] [2025-01-08 22:44:04,142 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:04,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:04,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:04,144 INFO L229 MonitoredProcess]: Starting monitored process 38 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 22:44:04,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-01-08 22:44:04,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 69 statements into 10 equivalence classes. [2025-01-08 22:44:04,339 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 48 of 69 statements. [2025-01-08 22:44:04,339 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-08 22:44:04,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:04,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-08 22:44:04,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:04,354 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 27 treesize of output 15 [2025-01-08 22:44:04,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:04,381 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 38 treesize of output 29 [2025-01-08 22:44:04,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:04,414 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 38 treesize of output 29 [2025-01-08 22:44:04,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:44:04,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 17 [2025-01-08 22:44:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 48 proven. 75 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-01-08 22:44:04,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 48 proven. 75 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2025-01-08 22:44:04,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810179112] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:04,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:04,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 23 [2025-01-08 22:44:04,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598167298] [2025-01-08 22:44:04,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:04,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:44:04,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:04,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:44:04,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:44:04,572 INFO L87 Difference]: Start difference. First operand 145 states and 169 transitions. Second operand has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 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 22:44:06,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:06,530 INFO L93 Difference]: Finished difference Result 347 states and 407 transitions. [2025-01-08 22:44:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-01-08 22:44:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 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 69 [2025-01-08 22:44:06,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:06,532 INFO L225 Difference]: With dead ends: 347 [2025-01-08 22:44:06,532 INFO L226 Difference]: Without dead ends: 344 [2025-01-08 22:44:06,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 135 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=617, Invalid=2805, Unknown=0, NotChecked=0, Total=3422 [2025-01-08 22:44:06,532 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:06,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 50 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 436 Invalid, 1 Unknown, 0 Unchecked, 1.3s Time] [2025-01-08 22:44:06,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2025-01-08 22:44:06,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 250. [2025-01-08 22:44:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 1.2048192771084338) internal successors, (300), 249 states have internal predecessors, (300), 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 22:44:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 300 transitions. [2025-01-08 22:44:06,633 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 300 transitions. Word has length 69 [2025-01-08 22:44:06,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:06,633 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 300 transitions. [2025-01-08 22:44:06,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.260869565217391) internal successors, (52), 23 states have internal predecessors, (52), 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 22:44:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 300 transitions. [2025-01-08 22:44:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-08 22:44:06,633 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:06,633 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:06,643 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2025-01-08 22:44:06,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:06,834 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:06,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:06,834 INFO L85 PathProgramCache]: Analyzing trace with hash -746495397, now seen corresponding path program 10 times [2025-01-08 22:44:06,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:06,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809360930] [2025-01-08 22:44:06,834 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:44:06,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:06,843 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 72 statements into 2 equivalence classes. [2025-01-08 22:44:06,848 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 68 of 72 statements. [2025-01-08 22:44:06,848 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:44:06,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 145 proven. 92 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-01-08 22:44:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809360930] [2025-01-08 22:44:07,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809360930] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145152133] [2025-01-08 22:44:07,077 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:44:07,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:07,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:07,079 INFO L229 MonitoredProcess]: Starting monitored process 39 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 22:44:07,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-01-08 22:44:07,206 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 72 statements into 2 equivalence classes. [2025-01-08 22:44:07,228 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 68 of 72 statements. [2025-01-08 22:44:07,228 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:44:07,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:07,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-08 22:44:07,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 142 proven. 92 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-08 22:44:07,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 142 proven. 92 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-01-08 22:44:07,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145152133] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:07,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:07,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 30 [2025-01-08 22:44:07,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688500646] [2025-01-08 22:44:07,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:07,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-08 22:44:07,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:07,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-08 22:44:07,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2025-01-08 22:44:07,585 INFO L87 Difference]: Start difference. First operand 250 states and 300 transitions. Second operand has 30 states, 30 states have (on average 3.1) internal successors, (93), 30 states have internal predecessors, (93), 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 22:44:08,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:08,024 INFO L93 Difference]: Finished difference Result 645 states and 788 transitions. [2025-01-08 22:44:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-08 22:44:08,024 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1) internal successors, (93), 30 states have internal predecessors, (93), 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 72 [2025-01-08 22:44:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:08,025 INFO L225 Difference]: With dead ends: 645 [2025-01-08 22:44:08,025 INFO L226 Difference]: Without dead ends: 375 [2025-01-08 22:44:08,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 118 SyntacticMatches, 17 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=372, Invalid=1110, Unknown=0, NotChecked=0, Total=1482 [2025-01-08 22:44:08,026 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 148 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:08,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 37 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:44:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2025-01-08 22:44:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 253. [2025-01-08 22:44:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.2023809523809523) internal successors, (303), 252 states have internal predecessors, (303), 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 22:44:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 303 transitions. [2025-01-08 22:44:08,134 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 303 transitions. Word has length 72 [2025-01-08 22:44:08,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:08,134 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 303 transitions. [2025-01-08 22:44:08,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1) internal successors, (93), 30 states have internal predecessors, (93), 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 22:44:08,134 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 303 transitions. [2025-01-08 22:44:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-08 22:44:08,134 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:08,134 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:08,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:08,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-01-08 22:44:08,335 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:08,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1009557065, now seen corresponding path program 9 times [2025-01-08 22:44:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:08,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007299962] [2025-01-08 22:44:08,335 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:08,346 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 73 statements into 11 equivalence classes. [2025-01-08 22:44:08,362 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 67 of 73 statements. [2025-01-08 22:44:08,363 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-08 22:44:08,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 28 proven. 109 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-08 22:44:08,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:08,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007299962] [2025-01-08 22:44:08,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007299962] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:08,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993900987] [2025-01-08 22:44:08,560 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:44:08,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:08,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:08,562 INFO L229 MonitoredProcess]: Starting monitored process 40 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 22:44:08,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-01-08 22:44:08,679 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 73 statements into 11 equivalence classes. [2025-01-08 22:44:09,259 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 67 of 73 statements. [2025-01-08 22:44:09,259 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-08 22:44:09,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:09,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-08 22:44:09,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:44:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 36 proven. 101 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-08 22:44:09,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:44:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 36 proven. 101 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-08 22:44:09,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993900987] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:44:09,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:44:09,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2025-01-08 22:44:09,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297204913] [2025-01-08 22:44:09,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:44:09,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-08 22:44:09,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:44:09,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-08 22:44:09,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2025-01-08 22:44:09,623 INFO L87 Difference]: Start difference. First operand 253 states and 303 transitions. Second operand has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 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 22:44:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:44:10,101 INFO L93 Difference]: Finished difference Result 378 states and 465 transitions. [2025-01-08 22:44:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-08 22:44:10,102 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2025-01-08 22:44:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:44:10,103 INFO L225 Difference]: With dead ends: 378 [2025-01-08 22:44:10,103 INFO L226 Difference]: Without dead ends: 375 [2025-01-08 22:44:10,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 117 SyntacticMatches, 18 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 809 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=413, Invalid=1309, Unknown=0, NotChecked=0, Total=1722 [2025-01-08 22:44:10,103 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 163 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:44:10,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 44 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:44:10,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2025-01-08 22:44:10,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 265. [2025-01-08 22:44:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.2083333333333333) internal successors, (319), 264 states have internal predecessors, (319), 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 22:44:10,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 319 transitions. [2025-01-08 22:44:10,217 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 319 transitions. Word has length 73 [2025-01-08 22:44:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:44:10,217 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 319 transitions. [2025-01-08 22:44:10,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.46875) internal successors, (79), 32 states have internal predecessors, (79), 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 22:44:10,217 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 319 transitions. [2025-01-08 22:44:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-01-08 22:44:10,217 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:44:10,217 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:44:10,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2025-01-08 22:44:10,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:10,418 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:44:10,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:44:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash -712174143, now seen corresponding path program 11 times [2025-01-08 22:44:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:44:10,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058668161] [2025-01-08 22:44:10,418 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:44:10,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:44:10,429 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 11 equivalence classes. [2025-01-08 22:44:10,440 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 76 of 76 statements. [2025-01-08 22:44:10,440 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-01-08 22:44:10,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:44:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 145 proven. 117 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-01-08 22:44:10,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:44:10,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058668161] [2025-01-08 22:44:10,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058668161] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:44:10,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848735299] [2025-01-08 22:44:10,655 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:44:10,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:44:10,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:44:10,657 INFO L229 MonitoredProcess]: Starting monitored process 41 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 22:44:10,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-01-08 22:44:10,778 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 76 statements into 11 equivalence classes.