./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.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 c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:35:00,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:35:01,047 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:35:01,053 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:35:01,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:35:01,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:35:01,086 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:35:01,086 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:35:01,086 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:35:01,087 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:35:01,088 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:35:01,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:35:01,088 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:35:01,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:35:01,088 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:35:01,089 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:35:01,089 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:35:01,089 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:35:01,090 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:35:01,090 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:35:01,090 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:35:01,090 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:35:01,090 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:35:01,090 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:35:01,090 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:35:01,090 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:35:01,090 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:35:01,091 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:35:01,091 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:35:01,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:35:01,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:35:01,092 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:35:01,092 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:35:01,092 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:35:01,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:35:01,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:35:01,092 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:35:01,092 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:35:01,092 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:35:01,092 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 -> c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 [2025-01-08 22:35:01,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:35:01,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:35:01,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:35:01,368 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:35:01,368 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:35:01,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2025-01-08 22:35:02,659 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e29c5d478/9e2a771e25244869a678eba4bcee15b7/FLAGcb32dcea9 [2025-01-08 22:35:02,896 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:35:02,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2025-01-08 22:35:02,915 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e29c5d478/9e2a771e25244869a678eba4bcee15b7/FLAGcb32dcea9 [2025-01-08 22:35:02,938 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e29c5d478/9e2a771e25244869a678eba4bcee15b7 [2025-01-08 22:35:02,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:35:02,941 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:35:02,942 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:35:02,943 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:35:02,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:35:02,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:35:02" (1/1) ... [2025-01-08 22:35:02,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bedf151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:02, skipping insertion in model container [2025-01-08 22:35:02,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:35:02" (1/1) ... [2025-01-08 22:35:02,962 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:35:03,096 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c[414,427] [2025-01-08 22:35:03,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:35:03,122 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:35:03,133 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c[414,427] [2025-01-08 22:35:03,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:35:03,153 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:35:03,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03 WrapperNode [2025-01-08 22:35:03,154 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:35:03,155 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:35:03,155 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:35:03,156 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:35:03,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,167 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,182 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2025-01-08 22:35:03,182 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:35:03,183 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:35:03,183 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:35:03,183 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:35:03,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,213 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-01-08 22:35:03,214 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,214 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,217 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,222 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:35:03,224 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:35:03,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:35:03,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:35:03,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (1/1) ... [2025-01-08 22:35:03,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:35:03,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:03,257 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 22:35:03,265 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 22:35:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:35:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:35:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:35:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:35:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:35:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:35:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:35:03,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:35:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:35:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:35:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:35:03,358 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:35:03,361 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:35:03,463 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-08 22:35:03,464 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:35:03,470 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:35:03,470 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:35:03,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:35:03 BoogieIcfgContainer [2025-01-08 22:35:03,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:35:03,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:35:03,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:35:03,476 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:35:03,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:35:02" (1/3) ... [2025-01-08 22:35:03,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e3b49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:35:03, skipping insertion in model container [2025-01-08 22:35:03,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:35:03" (2/3) ... [2025-01-08 22:35:03,477 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e3b49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:35:03, skipping insertion in model container [2025-01-08 22:35:03,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:35:03" (3/3) ... [2025-01-08 22:35:03,478 INFO L128 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind.c [2025-01-08 22:35:03,490 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:35:03,492 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_init_var_plus_ind.c that has 1 procedures, 13 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-08 22:35:03,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:35:03,550 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;@1068395f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:35:03,550 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:35:03,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-08 22:35:03,558 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:03,559 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:03,559 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:03,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1812540240, now seen corresponding path program 1 times [2025-01-08 22:35:03,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:03,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635898952] [2025-01-08 22:35:03,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:03,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:03,633 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-08 22:35:03,652 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-08 22:35:03,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:03,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:03,788 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 22:35:03,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635898952] [2025-01-08 22:35:03,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635898952] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:35:03,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:35:03,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:35:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377304049] [2025-01-08 22:35:03,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:35:03,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:35:03,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:03,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:35:03,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:35:03,809 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:03,843 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2025-01-08 22:35:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:35:03,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-01-08 22:35:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:03,852 INFO L225 Difference]: With dead ends: 30 [2025-01-08 22:35:03,853 INFO L226 Difference]: Without dead ends: 18 [2025-01-08 22:35:03,854 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 22:35:03,857 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:03,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 16 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:35:03,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-01-08 22:35:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2025-01-08 22:35:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:03,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2025-01-08 22:35:03,887 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 7 [2025-01-08 22:35:03,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:03,887 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2025-01-08 22:35:03,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:03,887 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2025-01-08 22:35:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-01-08 22:35:03,888 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:03,888 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:03,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:35:03,888 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:03,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:03,890 INFO L85 PathProgramCache]: Analyzing trace with hash 148105324, now seen corresponding path program 1 times [2025-01-08 22:35:03,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:03,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630950057] [2025-01-08 22:35:03,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:03,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:03,900 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-08 22:35:03,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-08 22:35:03,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:03,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:04,013 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 22:35:04,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:04,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630950057] [2025-01-08 22:35:04,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630950057] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:35:04,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:35:04,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:35:04,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114497031] [2025-01-08 22:35:04,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:35:04,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:35:04,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:04,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:35:04,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:35:04,018 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:04,041 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2025-01-08 22:35:04,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:35:04,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2025-01-08 22:35:04,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:04,042 INFO L225 Difference]: With dead ends: 19 [2025-01-08 22:35:04,042 INFO L226 Difference]: Without dead ends: 12 [2025-01-08 22:35:04,043 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 22:35:04,043 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:04,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:35:04,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-01-08 22:35:04,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-01-08 22:35:04,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:04,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2025-01-08 22:35:04,050 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2025-01-08 22:35:04,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:04,050 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2025-01-08 22:35:04,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2025-01-08 22:35:04,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-08 22:35:04,051 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:04,051 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:04,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:35:04,052 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:04,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash 351586923, now seen corresponding path program 1 times [2025-01-08 22:35:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:04,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348043114] [2025-01-08 22:35:04,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:04,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:04,064 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-08 22:35:04,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-08 22:35:04,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:04,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:04,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:04,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348043114] [2025-01-08 22:35:04,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348043114] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:04,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123413476] [2025-01-08 22:35:04,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:04,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:04,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:04,183 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 22:35:04,184 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 22:35:04,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-08 22:35:04,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-08 22:35:04,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:04,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:04,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:35:04,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:04,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:04,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:04,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123413476] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:04,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:04,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2025-01-08 22:35:04,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156684955] [2025-01-08 22:35:04,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:04,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:35:04,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:04,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:35:04,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:35:04,382 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:04,489 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2025-01-08 22:35:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:35:04,490 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-08 22:35:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:04,490 INFO L225 Difference]: With dead ends: 37 [2025-01-08 22:35:04,490 INFO L226 Difference]: Without dead ends: 29 [2025-01-08 22:35:04,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:35:04,491 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 89 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:04,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 41 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:35:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-08 22:35:04,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2025-01-08 22:35:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2025-01-08 22:35:04,499 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2025-01-08 22:35:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:04,499 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2025-01-08 22:35:04,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:04,499 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2025-01-08 22:35:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-01-08 22:35:04,500 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:04,500 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:04,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-08 22:35:04,704 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 22:35:04,704 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:04,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash -253463626, now seen corresponding path program 1 times [2025-01-08 22:35:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:04,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818630715] [2025-01-08 22:35:04,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:04,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:04,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-08 22:35:04,721 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-08 22:35:04,721 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:04,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:04,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:04,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818630715] [2025-01-08 22:35:04,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818630715] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:04,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173943964] [2025-01-08 22:35:04,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:04,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:04,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:04,984 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 22:35:04,986 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 22:35:05,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-01-08 22:35:05,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-01-08 22:35:05,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:05,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:05,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-08 22:35:05,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:05,153 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 1 [2025-01-08 22:35:05,249 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 15 treesize of output 7 [2025-01-08 22:35:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:05,268 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:05,310 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 18 treesize of output 16 [2025-01-08 22:35:05,316 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 24 treesize of output 20 [2025-01-08 22:35:05,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173943964] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:05,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:05,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-08 22:35:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196243750] [2025-01-08 22:35:05,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:05,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-08 22:35:05,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:05,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-08 22:35:05,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:35:05,365 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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 22:35:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:05,490 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2025-01-08 22:35:05,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:35:05,490 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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) Word has length 12 [2025-01-08 22:35:05,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:05,491 INFO L225 Difference]: With dead ends: 28 [2025-01-08 22:35:05,491 INFO L226 Difference]: Without dead ends: 26 [2025-01-08 22:35:05,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:35:05,492 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:05,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 85 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:35:05,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-01-08 22:35:05,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2025-01-08 22:35:05,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 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 22:35:05,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2025-01-08 22:35:05,497 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2025-01-08 22:35:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:05,497 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2025-01-08 22:35:05,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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 22:35:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2025-01-08 22:35:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-08 22:35:05,498 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:05,498 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:05,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-08 22:35:05,703 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 22:35:05,703 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:05,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1552478853, now seen corresponding path program 2 times [2025-01-08 22:35:05,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:05,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549582370] [2025-01-08 22:35:05,704 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:05,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:05,713 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-08 22:35:05,726 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-08 22:35:05,726 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:05,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:05,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:05,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549582370] [2025-01-08 22:35:05,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549582370] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:05,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312339111] [2025-01-08 22:35:05,952 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:05,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:05,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:05,958 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 22:35:05,960 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 22:35:05,995 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-08 22:35:06,011 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-01-08 22:35:06,011 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:06,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:06,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-08 22:35:06,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:06,089 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 1 [2025-01-08 22:35:06,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:35:06,128 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 27 treesize of output 11 [2025-01-08 22:35:06,217 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 15 treesize of output 7 [2025-01-08 22:35:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:06,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:06,307 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 21 treesize of output 19 [2025-01-08 22:35:06,312 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 22:35:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:06,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312339111] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:06,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:06,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2025-01-08 22:35:06,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824613715] [2025-01-08 22:35:06,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:06,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-08 22:35:06,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:06,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-08 22:35:06,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:35:06,365 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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 22:35:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:06,469 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2025-01-08 22:35:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:35:06,469 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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 14 [2025-01-08 22:35:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:06,470 INFO L225 Difference]: With dead ends: 25 [2025-01-08 22:35:06,470 INFO L226 Difference]: Without dead ends: 23 [2025-01-08 22:35:06,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:35:06,471 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 13 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:06,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 49 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:35:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-08 22:35:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2025-01-08 22:35:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 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 22:35:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2025-01-08 22:35:06,475 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 14 [2025-01-08 22:35:06,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:06,475 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2025-01-08 22:35:06,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 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 22:35:06,476 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2025-01-08 22:35:06,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-08 22:35:06,476 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:06,476 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:06,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-08 22:35:06,681 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 22:35:06,681 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:06,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:06,682 INFO L85 PathProgramCache]: Analyzing trace with hash -377590273, now seen corresponding path program 1 times [2025-01-08 22:35:06,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:06,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990014335] [2025-01-08 22:35:06,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:06,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:06,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-08 22:35:06,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-08 22:35:06,694 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:06,694 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:06,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:06,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990014335] [2025-01-08 22:35:06,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990014335] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:06,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117664631] [2025-01-08 22:35:06,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:06,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:06,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:06,759 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 22:35:06,761 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 22:35:06,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-08 22:35:06,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-08 22:35:06,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:06,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:06,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:35:06,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:06,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:06,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117664631] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:06,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:06,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-01-08 22:35:06,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305810883] [2025-01-08 22:35:06,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:06,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:35:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:06,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:35:06,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:35:06,901 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:06,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:06,939 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2025-01-08 22:35:06,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-08 22:35:06,940 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-08 22:35:06,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:06,940 INFO L225 Difference]: With dead ends: 29 [2025-01-08 22:35:06,940 INFO L226 Difference]: Without dead ends: 19 [2025-01-08 22:35:06,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:35:06,941 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:06,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:35:06,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-01-08 22:35:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-01-08 22:35:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:06,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2025-01-08 22:35:06,945 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2025-01-08 22:35:06,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:06,945 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2025-01-08 22:35:06,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:06,946 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2025-01-08 22:35:06,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:35:06,946 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:06,946 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:06,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-08 22:35:07,150 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 22:35:07,150 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:07,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1684880870, now seen corresponding path program 2 times [2025-01-08 22:35:07,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:07,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285359993] [2025-01-08 22:35:07,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:07,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:07,160 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-08 22:35:07,172 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:35:07,172 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:07,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:07,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:07,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285359993] [2025-01-08 22:35:07,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285359993] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:07,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189793590] [2025-01-08 22:35:07,459 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:07,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:07,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:07,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-08 22:35:07,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-08 22:35:07,498 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-01-08 22:35:07,513 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:35:07,513 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:07,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:07,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-08 22:35:07,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:07,576 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 23 treesize of output 1 [2025-01-08 22:35:07,741 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:35:07,742 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 23 treesize of output 10 [2025-01-08 22:35:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:07,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:07,953 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 20 treesize of output 18 [2025-01-08 22:35:07,957 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 26 treesize of output 20 [2025-01-08 22:35:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:08,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189793590] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:08,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:08,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2025-01-08 22:35:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138830540] [2025-01-08 22:35:08,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:08,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-08 22:35:08,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:08,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-08 22:35:08,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:35:08,123 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:08,284 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2025-01-08 22:35:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:35:08,284 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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 22:35:08,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:08,285 INFO L225 Difference]: With dead ends: 29 [2025-01-08 22:35:08,285 INFO L226 Difference]: Without dead ends: 20 [2025-01-08 22:35:08,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:35:08,286 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:08,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:35:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-08 22:35:08,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-01-08 22:35:08,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-01-08 22:35:08,293 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2025-01-08 22:35:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:08,293 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-01-08 22:35:08,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-01-08 22:35:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-08 22:35:08,294 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:08,295 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:08,302 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 22:35:08,495 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 22:35:08,495 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:08,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:08,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1312072889, now seen corresponding path program 1 times [2025-01-08 22:35:08,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916012523] [2025-01-08 22:35:08,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:08,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:08,506 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-08 22:35:08,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:35:08,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:08,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:35:08,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:08,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916012523] [2025-01-08 22:35:08,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916012523] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:08,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223689932] [2025-01-08 22:35:08,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:35:08,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:08,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:08,604 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 22:35:08,605 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 22:35:08,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-08 22:35:08,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-08 22:35:08,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:08,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:08,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-08 22:35:08,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:35:08,743 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-01-08 22:35:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223689932] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:08,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-01-08 22:35:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092537720] [2025-01-08 22:35:08,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:08,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-08 22:35:08,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:08,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-08 22:35:08,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2025-01-08 22:35:08,832 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 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 22:35:08,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:08,986 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2025-01-08 22:35:08,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:35:08,987 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 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 18 [2025-01-08 22:35:08,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:08,988 INFO L225 Difference]: With dead ends: 87 [2025-01-08 22:35:08,988 INFO L226 Difference]: Without dead ends: 79 [2025-01-08 22:35:08,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:35:08,990 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 203 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:08,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 78 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:35:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-01-08 22:35:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 31. [2025-01-08 22:35:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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 22:35:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2025-01-08 22:35:09,002 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 18 [2025-01-08 22:35:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:09,002 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2025-01-08 22:35:09,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 18 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 22:35:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2025-01-08 22:35:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-08 22:35:09,003 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:09,003 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:09,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-08 22:35:09,204 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 22:35:09,204 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:09,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:09,205 INFO L85 PathProgramCache]: Analyzing trace with hash 434273141, now seen corresponding path program 3 times [2025-01-08 22:35:09,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627277537] [2025-01-08 22:35:09,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:35:09,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:09,213 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 5 equivalence classes. [2025-01-08 22:35:09,228 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:35:09,228 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:35:09,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:09,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627277537] [2025-01-08 22:35:09,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627277537] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739750991] [2025-01-08 22:35:09,534 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:35:09,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:09,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:09,537 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 22:35:09,539 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 22:35:09,577 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 19 statements into 5 equivalence classes. [2025-01-08 22:35:09,596 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 19 of 19 statements. [2025-01-08 22:35:09,597 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-08 22:35:09,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:09,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-08 22:35:09,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:09,650 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 19 treesize of output 1 [2025-01-08 22:35:09,690 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-01-08 22:35:09,690 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 33 treesize of output 13 [2025-01-08 22:35:09,748 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 19 treesize of output 7 [2025-01-08 22:35:09,777 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:09,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:09,883 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 25 treesize of output 23 [2025-01-08 22:35:09,888 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 54 treesize of output 50 [2025-01-08 22:35:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:09,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739750991] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:09,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:09,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2025-01-08 22:35:09,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749868867] [2025-01-08 22:35:09,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:09,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-08 22:35:09,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:09,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-08 22:35:09,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:35:09,995 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:10,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:10,138 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2025-01-08 22:35:10,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:35:10,138 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-08 22:35:10,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:10,139 INFO L225 Difference]: With dead ends: 37 [2025-01-08 22:35:10,139 INFO L226 Difference]: Without dead ends: 35 [2025-01-08 22:35:10,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:35:10,140 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:10,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 61 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:35:10,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-01-08 22:35:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2025-01-08 22:35:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 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 22:35:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2025-01-08 22:35:10,146 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 19 [2025-01-08 22:35:10,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:10,146 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2025-01-08 22:35:10,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:10,147 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2025-01-08 22:35:10,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-08 22:35:10,147 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:10,147 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:10,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-08 22:35:10,347 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 22:35:10,348 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:10,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 994433504, now seen corresponding path program 4 times [2025-01-08 22:35:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:10,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484034818] [2025-01-08 22:35:10,349 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:35:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:10,356 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:35:10,373 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-08 22:35:10,373 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:35:10,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:10,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:10,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484034818] [2025-01-08 22:35:10,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484034818] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:10,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854792275] [2025-01-08 22:35:10,669 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:35:10,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:10,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:10,672 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 22:35:10,674 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 22:35:10,711 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 22 statements into 2 equivalence classes. [2025-01-08 22:35:10,733 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 22 of 22 statements. [2025-01-08 22:35:10,733 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:35:10,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:10,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-08 22:35:10,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:10,808 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 23 treesize of output 1 [2025-01-08 22:35:11,015 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:35:11,016 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 23 treesize of output 10 [2025-01-08 22:35:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:11,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:11,259 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 20 treesize of output 18 [2025-01-08 22:35:11,264 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 26 treesize of output 20 [2025-01-08 22:35:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:11,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854792275] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:11,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:11,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2025-01-08 22:35:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916889831] [2025-01-08 22:35:11,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:11,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-08 22:35:11,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:11,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-08 22:35:11,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2025-01-08 22:35:11,437 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:12,336 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2025-01-08 22:35:12,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:35:12,337 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-01-08 22:35:12,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:12,337 INFO L225 Difference]: With dead ends: 46 [2025-01-08 22:35:12,337 INFO L226 Difference]: Without dead ends: 34 [2025-01-08 22:35:12,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=643, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:35:12,339 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 6 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:12,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 78 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 2 Unknown, 0 Unchecked, 0.9s Time] [2025-01-08 22:35:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-01-08 22:35:12,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2025-01-08 22:35:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2025-01-08 22:35:12,343 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 22 [2025-01-08 22:35:12,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:12,344 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2025-01-08 22:35:12,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:12,344 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2025-01-08 22:35:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-01-08 22:35:12,344 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:12,345 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:12,352 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 22:35:12,545 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 22:35:12,545 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:12,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:12,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1574256283, now seen corresponding path program 5 times [2025-01-08 22:35:12,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:12,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087554874] [2025-01-08 22:35:12,546 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:35:12,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:12,553 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 6 equivalence classes. [2025-01-08 22:35:12,576 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:35:12,579 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-08 22:35:12,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:12,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087554874] [2025-01-08 22:35:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087554874] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:12,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878033783] [2025-01-08 22:35:12,951 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:35:12,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:12,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:12,953 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 22:35:12,955 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 22:35:12,992 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 24 statements into 6 equivalence classes. [2025-01-08 22:35:13,018 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 24 of 24 statements. [2025-01-08 22:35:13,018 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-01-08 22:35:13,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:13,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-08 22:35:13,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:13,071 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 1 [2025-01-08 22:35:13,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:35:13,104 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 27 treesize of output 11 [2025-01-08 22:35:13,233 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 15 treesize of output 7 [2025-01-08 22:35:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:13,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:13,392 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 25 treesize of output 23 [2025-01-08 22:35:13,395 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 54 treesize of output 50 [2025-01-08 22:35:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:13,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878033783] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:13,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:13,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2025-01-08 22:35:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419945340] [2025-01-08 22:35:13,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:13,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-08 22:35:13,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:13,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-08 22:35:13,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:35:13,529 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 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 22:35:13,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:13,718 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2025-01-08 22:35:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:35:13,719 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 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 24 [2025-01-08 22:35:13,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:13,719 INFO L225 Difference]: With dead ends: 40 [2025-01-08 22:35:13,719 INFO L226 Difference]: Without dead ends: 38 [2025-01-08 22:35:13,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2025-01-08 22:35:13,720 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 30 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:13,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 78 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:35:13,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-01-08 22:35:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2025-01-08 22:35:13,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 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 22:35:13,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2025-01-08 22:35:13,730 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 24 [2025-01-08 22:35:13,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:13,732 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2025-01-08 22:35:13,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 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 22:35:13,732 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2025-01-08 22:35:13,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-08 22:35:13,733 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:13,733 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:13,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-01-08 22:35:13,933 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 22:35:13,934 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:13,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1916236304, now seen corresponding path program 6 times [2025-01-08 22:35:13,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:13,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004487693] [2025-01-08 22:35:13,935 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:35:13,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:13,942 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-01-08 22:35:13,962 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:35:13,967 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-08 22:35:13,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:14,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:14,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004487693] [2025-01-08 22:35:14,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004487693] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:14,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310197629] [2025-01-08 22:35:14,301 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:35:14,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:14,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:14,302 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 22:35:14,304 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 22:35:14,347 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 27 statements into 6 equivalence classes. [2025-01-08 22:35:14,373 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:35:14,374 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-01-08 22:35:14,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:14,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-08 22:35:14,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:14,520 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 1 [2025-01-08 22:35:14,681 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 15 treesize of output 7 [2025-01-08 22:35:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:14,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:14,852 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 18 treesize of output 16 [2025-01-08 22:35:14,854 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 24 treesize of output 20 [2025-01-08 22:35:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:15,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310197629] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:15,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:15,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 34 [2025-01-08 22:35:15,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58510729] [2025-01-08 22:35:15,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:15,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-08 22:35:15,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:15,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-08 22:35:15,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2025-01-08 22:35:15,005 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 34 states, 34 states have (on average 2.235294117647059) internal successors, (76), 34 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 22:35:15,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:15,487 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2025-01-08 22:35:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:35:15,487 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.235294117647059) internal successors, (76), 34 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 27 [2025-01-08 22:35:15,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:15,487 INFO L225 Difference]: With dead ends: 55 [2025-01-08 22:35:15,488 INFO L226 Difference]: Without dead ends: 37 [2025-01-08 22:35:15,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2025-01-08 22:35:15,489 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:15,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 189 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:35:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-08 22:35:15,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-01-08 22:35:15,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 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 22:35:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2025-01-08 22:35:15,494 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 27 [2025-01-08 22:35:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:15,495 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2025-01-08 22:35:15,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.235294117647059) internal successors, (76), 34 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 22:35:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2025-01-08 22:35:15,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-01-08 22:35:15,495 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:15,495 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:15,506 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 22:35:15,695 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 22:35:15,696 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:15,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash -405761653, now seen corresponding path program 7 times [2025-01-08 22:35:15,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:15,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190520024] [2025-01-08 22:35:15,696 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:35:15,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:15,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-08 22:35:15,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-08 22:35:15,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:15,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:16,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:16,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190520024] [2025-01-08 22:35:16,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190520024] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:16,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944793353] [2025-01-08 22:35:16,040 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:35:16,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:16,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:16,042 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 22:35:16,046 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 22:35:16,091 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-01-08 22:35:16,112 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-01-08 22:35:16,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:16,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:16,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-08 22:35:16,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:16,259 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 1 [2025-01-08 22:35:16,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:35:16,297 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 27 treesize of output 11 [2025-01-08 22:35:16,464 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 15 treesize of output 7 [2025-01-08 22:35:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:16,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:16,631 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 25 treesize of output 23 [2025-01-08 22:35:16,634 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 54 treesize of output 50 [2025-01-08 22:35:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:16,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944793353] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:16,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2025-01-08 22:35:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538524930] [2025-01-08 22:35:16,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:16,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-08 22:35:16,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:16,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-08 22:35:16,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2025-01-08 22:35:16,809 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:17,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:17,090 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2025-01-08 22:35:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:35:17,091 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 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 29 [2025-01-08 22:35:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:17,091 INFO L225 Difference]: With dead ends: 43 [2025-01-08 22:35:17,091 INFO L226 Difference]: Without dead ends: 41 [2025-01-08 22:35:17,092 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=1619, Unknown=0, NotChecked=0, Total=1806 [2025-01-08 22:35:17,092 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 51 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:17,093 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 159 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:35:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-08 22:35:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2025-01-08 22:35:17,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:17,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2025-01-08 22:35:17,099 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 29 [2025-01-08 22:35:17,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:17,100 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2025-01-08 22:35:17,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:17,100 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2025-01-08 22:35:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-01-08 22:35:17,100 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:17,100 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:17,106 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 22:35:17,301 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 22:35:17,301 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:17,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:17,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2002648054, now seen corresponding path program 8 times [2025-01-08 22:35:17,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:17,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083522828] [2025-01-08 22:35:17,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:17,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:17,307 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-08 22:35:17,315 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:35:17,315 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:17,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:17,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:17,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083522828] [2025-01-08 22:35:17,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083522828] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:17,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83295625] [2025-01-08 22:35:17,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:17,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:17,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:17,719 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 22:35:17,721 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 22:35:17,767 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-01-08 22:35:17,785 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-01-08 22:35:17,786 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:17,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:17,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-08 22:35:17,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:17,880 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 23 treesize of output 1 [2025-01-08 22:35:18,190 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:35:18,190 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 23 treesize of output 10 [2025-01-08 22:35:18,213 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:18,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:18,551 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 20 treesize of output 18 [2025-01-08 22:35:18,554 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 26 treesize of output 20 [2025-01-08 22:35:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 18 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:18,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83295625] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:18,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:18,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2025-01-08 22:35:18,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18766081] [2025-01-08 22:35:18,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:18,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-01-08 22:35:18,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:18,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-01-08 22:35:18,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2025-01-08 22:35:18,796 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 39 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 39 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 22:35:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:19,702 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2025-01-08 22:35:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:35:19,703 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 39 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 32 [2025-01-08 22:35:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:19,703 INFO L225 Difference]: With dead ends: 58 [2025-01-08 22:35:19,703 INFO L226 Difference]: Without dead ends: 40 [2025-01-08 22:35:19,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=1365, Unknown=0, NotChecked=0, Total=1640 [2025-01-08 22:35:19,704 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:19,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 145 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 2 Unknown, 0 Unchecked, 0.9s Time] [2025-01-08 22:35:19,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-01-08 22:35:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-01-08 22:35:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2025-01-08 22:35:19,709 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 32 [2025-01-08 22:35:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:19,709 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2025-01-08 22:35:19,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 39 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 22:35:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2025-01-08 22:35:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-08 22:35:19,710 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:19,710 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:19,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-08 22:35:19,910 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 22:35:19,911 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:19,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1520634191, now seen corresponding path program 9 times [2025-01-08 22:35:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:19,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337547333] [2025-01-08 22:35:19,911 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:35:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:19,918 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 8 equivalence classes. [2025-01-08 22:35:19,938 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:35:19,938 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-08 22:35:19,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:20,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337547333] [2025-01-08 22:35:20,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337547333] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332201661] [2025-01-08 22:35:20,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:35:20,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:20,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:20,399 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 22:35:20,402 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 22:35:20,451 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 8 equivalence classes. [2025-01-08 22:35:20,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 34 of 34 statements. [2025-01-08 22:35:20,496 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-01-08 22:35:20,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:20,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-08 22:35:20,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:20,562 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 19 treesize of output 1 [2025-01-08 22:35:20,597 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-01-08 22:35:20,597 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 33 treesize of output 13 [2025-01-08 22:35:20,760 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 19 treesize of output 7 [2025-01-08 22:35:20,782 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:20,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:20,970 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 25 treesize of output 23 [2025-01-08 22:35:20,973 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 54 treesize of output 50 [2025-01-08 22:35:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:21,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332201661] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:21,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:21,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 38 [2025-01-08 22:35:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144471435] [2025-01-08 22:35:21,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:21,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-08 22:35:21,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:21,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-08 22:35:21,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2025-01-08 22:35:21,158 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 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 22:35:21,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:21,581 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2025-01-08 22:35:21,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:35:21,581 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 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 34 [2025-01-08 22:35:21,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:21,582 INFO L225 Difference]: With dead ends: 46 [2025-01-08 22:35:21,583 INFO L226 Difference]: Without dead ends: 44 [2025-01-08 22:35:21,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=199, Invalid=1781, Unknown=0, NotChecked=0, Total=1980 [2025-01-08 22:35:21,585 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 82 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:21,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 141 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:35:21,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-01-08 22:35:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2025-01-08 22:35:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:21,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2025-01-08 22:35:21,593 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 34 [2025-01-08 22:35:21,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:21,593 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2025-01-08 22:35:21,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.1842105263157894) internal successors, (83), 38 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 22:35:21,593 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2025-01-08 22:35:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-01-08 22:35:21,594 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:21,594 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:21,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-08 22:35:21,798 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 22:35:21,798 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:21,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2097068602, now seen corresponding path program 10 times [2025-01-08 22:35:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:21,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103106424] [2025-01-08 22:35:21,799 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:35:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:21,807 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-08 22:35:21,830 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:35:21,830 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:35:21,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 30 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:22,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:22,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103106424] [2025-01-08 22:35:22,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103106424] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:22,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142887670] [2025-01-08 22:35:22,284 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:35:22,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:22,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:22,287 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 22:35:22,289 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 22:35:22,342 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-01-08 22:35:22,412 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-01-08 22:35:22,413 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:35:22,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:22,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-01-08 22:35:22,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:22,533 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 23 treesize of output 1 [2025-01-08 22:35:22,853 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:35:22,853 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 23 treesize of output 10 [2025-01-08 22:35:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 35 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:22,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:23,169 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 20 treesize of output 18 [2025-01-08 22:35:23,172 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 26 treesize of output 20 [2025-01-08 22:35:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 30 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:23,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142887670] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:23,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:23,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2025-01-08 22:35:23,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523951943] [2025-01-08 22:35:23,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:23,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-08 22:35:23,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:23,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-08 22:35:23,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1698, Unknown=0, NotChecked=0, Total=2070 [2025-01-08 22:35:23,455 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 46 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 46 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:23,665 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2025-01-08 22:35:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-08 22:35:23,665 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 46 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-01-08 22:35:23,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:23,665 INFO L225 Difference]: With dead ends: 64 [2025-01-08 22:35:23,665 INFO L226 Difference]: Without dead ends: 43 [2025-01-08 22:35:23,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2025-01-08 22:35:23,666 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:23,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 131 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:35:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-01-08 22:35:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-01-08 22:35:23,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:23,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2025-01-08 22:35:23,672 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 37 [2025-01-08 22:35:23,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:23,672 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2025-01-08 22:35:23,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 46 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2025-01-08 22:35:23,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-08 22:35:23,673 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:23,673 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:23,679 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 22:35:23,873 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 22:35:23,874 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:23,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:23,874 INFO L85 PathProgramCache]: Analyzing trace with hash -946224223, now seen corresponding path program 11 times [2025-01-08 22:35:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:23,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006327731] [2025-01-08 22:35:23,874 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:35:23,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:23,882 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 9 equivalence classes. [2025-01-08 22:35:23,907 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:35:23,908 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-08 22:35:23,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:24,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:24,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006327731] [2025-01-08 22:35:24,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006327731] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:24,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219187852] [2025-01-08 22:35:24,326 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:35:24,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:24,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:24,328 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 22:35:24,330 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 22:35:24,383 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 9 equivalence classes. [2025-01-08 22:35:24,425 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:35:24,426 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-01-08 22:35:24,426 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:24,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-01-08 22:35:24,429 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:24,641 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 1 [2025-01-08 22:35:24,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:35:24,678 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 27 treesize of output 11 [2025-01-08 22:35:24,919 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 15 treesize of output 7 [2025-01-08 22:35:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:24,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:25,191 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 25 treesize of output 23 [2025-01-08 22:35:25,194 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 54 treesize of output 50 [2025-01-08 22:35:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219187852] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:25,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:25,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 51 [2025-01-08 22:35:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051028147] [2025-01-08 22:35:25,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:25,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-01-08 22:35:25,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:25,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-01-08 22:35:25,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2371, Unknown=0, NotChecked=0, Total=2550 [2025-01-08 22:35:25,448 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 51 states, 51 states have (on average 2.196078431372549) internal successors, (112), 51 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:25,944 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2025-01-08 22:35:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-08 22:35:25,944 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.196078431372549) internal successors, (112), 51 states have internal predecessors, (112), 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 39 [2025-01-08 22:35:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:25,945 INFO L225 Difference]: With dead ends: 49 [2025-01-08 22:35:25,945 INFO L226 Difference]: Without dead ends: 47 [2025-01-08 22:35:25,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=274, Invalid=3148, Unknown=0, NotChecked=0, Total=3422 [2025-01-08 22:35:25,946 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 42 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:25,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 201 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:35:25,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-01-08 22:35:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2025-01-08 22:35:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 45 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 22:35:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2025-01-08 22:35:25,955 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 39 [2025-01-08 22:35:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:25,956 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2025-01-08 22:35:25,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.196078431372549) internal successors, (112), 51 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2025-01-08 22:35:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-01-08 22:35:25,957 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:25,957 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:25,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-08 22:35:26,158 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 22:35:26,158 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:26,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1090678220, now seen corresponding path program 12 times [2025-01-08 22:35:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:26,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702565405] [2025-01-08 22:35:26,159 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:35:26,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:26,166 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 42 statements into 9 equivalence classes. [2025-01-08 22:35:26,192 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 42 of 42 statements. [2025-01-08 22:35:26,193 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-01-08 22:35:26,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 30 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:26,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702565405] [2025-01-08 22:35:26,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702565405] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:26,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738265933] [2025-01-08 22:35:26,710 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:35:26,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:26,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:26,712 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 22:35:26,715 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 22:35:26,772 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 42 statements into 9 equivalence classes. [2025-01-08 22:35:26,902 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) and asserted 42 of 42 statements. [2025-01-08 22:35:26,903 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2025-01-08 22:35:26,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:26,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-08 22:35:26,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:27,133 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 23 treesize of output 1 [2025-01-08 22:35:27,661 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:35:27,662 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 27 treesize of output 14 [2025-01-08 22:35:27,688 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 51 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:27,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:28,168 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 20 treesize of output 18 [2025-01-08 22:35:28,172 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 26 treesize of output 20 [2025-01-08 22:35:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 45 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:28,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738265933] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:28,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:28,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2025-01-08 22:35:28,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000501550] [2025-01-08 22:35:28,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:28,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-08 22:35:28,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:28,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-08 22:35:28,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=431, Invalid=2221, Unknown=0, NotChecked=0, Total=2652 [2025-01-08 22:35:28,570 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:29,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:29,712 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2025-01-08 22:35:29,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-08 22:35:29,712 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 52 states have internal predecessors, (121), 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 42 [2025-01-08 22:35:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:29,713 INFO L225 Difference]: With dead ends: 70 [2025-01-08 22:35:29,713 INFO L226 Difference]: Without dead ends: 46 [2025-01-08 22:35:29,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=536, Invalid=2886, Unknown=0, NotChecked=0, Total=3422 [2025-01-08 22:35:29,714 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:29,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 136 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 464 Invalid, 1 Unknown, 0 Unchecked, 1.0s Time] [2025-01-08 22:35:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-01-08 22:35:29,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-01-08 22:35:29,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 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 22:35:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2025-01-08 22:35:29,722 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 42 [2025-01-08 22:35:29,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:29,722 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2025-01-08 22:35:29,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.326923076923077) internal successors, (121), 52 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2025-01-08 22:35:29,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-01-08 22:35:29,723 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:29,723 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:29,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-08 22:35:29,927 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 22:35:29,927 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:29,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1558218041, now seen corresponding path program 13 times [2025-01-08 22:35:29,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:29,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311856150] [2025-01-08 22:35:29,928 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:35:29,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:29,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-08 22:35:29,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-08 22:35:29,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:29,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:30,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:30,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311856150] [2025-01-08 22:35:30,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311856150] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:30,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821251312] [2025-01-08 22:35:30,439 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:35:30,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:30,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:30,441 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 22:35:30,443 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 22:35:30,505 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-08 22:35:30,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-08 22:35:30,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:30,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:30,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-01-08 22:35:30,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:30,796 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 1 [2025-01-08 22:35:30,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:35:30,835 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 27 treesize of output 11 [2025-01-08 22:35:31,145 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 15 treesize of output 7 [2025-01-08 22:35:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:31,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:31,450 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 25 treesize of output 23 [2025-01-08 22:35:31,452 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 54 treesize of output 50 [2025-01-08 22:35:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821251312] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:31,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:31,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 55 [2025-01-08 22:35:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724696669] [2025-01-08 22:35:31,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:31,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-01-08 22:35:31,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:31,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-01-08 22:35:31,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2783, Unknown=0, NotChecked=0, Total=2970 [2025-01-08 22:35:31,721 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 55 states, 55 states have (on average 2.309090909090909) internal successors, (127), 55 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:32,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:32,245 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2025-01-08 22:35:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-01-08 22:35:32,246 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.309090909090909) internal successors, (127), 55 states have internal predecessors, (127), 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 44 [2025-01-08 22:35:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:32,246 INFO L225 Difference]: With dead ends: 52 [2025-01-08 22:35:32,246 INFO L226 Difference]: Without dead ends: 50 [2025-01-08 22:35:32,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=283, Invalid=3749, Unknown=0, NotChecked=0, Total=4032 [2025-01-08 22:35:32,248 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:32,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 304 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:35:32,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-01-08 22:35:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2025-01-08 22:35:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0625) internal successors, (51), 48 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 22:35:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2025-01-08 22:35:32,257 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 44 [2025-01-08 22:35:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:32,257 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2025-01-08 22:35:32,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.309090909090909) internal successors, (127), 55 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2025-01-08 22:35:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-01-08 22:35:32,258 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:32,258 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:32,265 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 22:35:32,462 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 22:35:32,462 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:32,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash 871909788, now seen corresponding path program 14 times [2025-01-08 22:35:32,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:32,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938343029] [2025-01-08 22:35:32,462 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:32,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:32,470 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-01-08 22:35:32,480 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-01-08 22:35:32,480 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:32,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:33,002 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 45 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:33,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938343029] [2025-01-08 22:35:33,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938343029] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:33,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842276792] [2025-01-08 22:35:33,003 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:33,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:33,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:33,005 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 22:35:33,006 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 22:35:33,064 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-01-08 22:35:33,087 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-01-08 22:35:33,087 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:33,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:33,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-08 22:35:33,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:33,253 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 23 treesize of output 1 [2025-01-08 22:35:33,722 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:35:33,722 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 23 treesize of output 10 [2025-01-08 22:35:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 70 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:33,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:34,203 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 20 treesize of output 18 [2025-01-08 22:35:34,205 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 26 treesize of output 20 [2025-01-08 22:35:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 63 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:34,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842276792] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:34,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:34,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 57 [2025-01-08 22:35:34,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685473793] [2025-01-08 22:35:34,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:34,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-01-08 22:35:34,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:34,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-01-08 22:35:34,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=2709, Unknown=0, NotChecked=0, Total=3192 [2025-01-08 22:35:34,635 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 57 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 57 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:34,949 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2025-01-08 22:35:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-08 22:35:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 57 states have internal predecessors, (135), 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 47 [2025-01-08 22:35:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:34,950 INFO L225 Difference]: With dead ends: 77 [2025-01-08 22:35:34,950 INFO L226 Difference]: Without dead ends: 50 [2025-01-08 22:35:34,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=521, Invalid=2901, Unknown=0, NotChecked=0, Total=3422 [2025-01-08 22:35:34,952 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:34,952 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 183 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:35:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-01-08 22:35:34,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-01-08 22:35:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 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 22:35:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2025-01-08 22:35:34,960 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 47 [2025-01-08 22:35:34,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:34,960 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2025-01-08 22:35:34,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.3684210526315788) internal successors, (135), 57 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2025-01-08 22:35:34,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-01-08 22:35:34,961 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:34,961 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:34,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-08 22:35:35,162 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 22:35:35,162 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:35,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:35,163 INFO L85 PathProgramCache]: Analyzing trace with hash -941725193, now seen corresponding path program 2 times [2025-01-08 22:35:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:35,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846534319] [2025-01-08 22:35:35,163 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:35,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:35,169 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-01-08 22:35:35,175 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:35:35,175 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:35,175 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-01-08 22:35:35,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:35,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846534319] [2025-01-08 22:35:35,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846534319] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:35,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240826616] [2025-01-08 22:35:35,333 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:35,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:35,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:35,337 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 22:35:35,338 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 22:35:35,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 48 statements into 2 equivalence classes. [2025-01-08 22:35:35,439 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:35:35,440 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:35,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:35,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-08 22:35:35,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-01-08 22:35:35,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2025-01-08 22:35:35,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240826616] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:35,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:35,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2025-01-08 22:35:35,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37833414] [2025-01-08 22:35:35,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:35,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-08 22:35:35,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:35,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-08 22:35:35,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2025-01-08 22:35:35,816 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:36,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:36,103 INFO L93 Difference]: Finished difference Result 411 states and 436 transitions. [2025-01-08 22:35:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-08 22:35:36,104 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 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 22:35:36,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:36,105 INFO L225 Difference]: With dead ends: 411 [2025-01-08 22:35:36,105 INFO L226 Difference]: Without dead ends: 385 [2025-01-08 22:35:36,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2025-01-08 22:35:36,107 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 272 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:36,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 102 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:35:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2025-01-08 22:35:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 73. [2025-01-08 22:35:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 72 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 86 transitions. [2025-01-08 22:35:36,122 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 86 transitions. Word has length 48 [2025-01-08 22:35:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:36,122 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 86 transitions. [2025-01-08 22:35:36,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 36 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 86 transitions. [2025-01-08 22:35:36,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-08 22:35:36,123 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:36,123 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:36,131 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 22:35:36,324 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 22:35:36,324 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:36,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:36,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1518505545, now seen corresponding path program 15 times [2025-01-08 22:35:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771413688] [2025-01-08 22:35:36,325 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:35:36,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:36,332 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 11 equivalence classes. [2025-01-08 22:35:36,364 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:35:36,365 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-08 22:35:36,365 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771413688] [2025-01-08 22:35:36,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771413688] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:36,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897967436] [2025-01-08 22:35:36,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:35:36,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:36,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:36,902 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 22:35:36,905 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 22:35:36,975 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 49 statements into 11 equivalence classes. [2025-01-08 22:35:37,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:35:37,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-08 22:35:37,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:37,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-01-08 22:35:37,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:37,151 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 19 treesize of output 1 [2025-01-08 22:35:37,190 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-01-08 22:35:37,190 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 33 treesize of output 13 [2025-01-08 22:35:37,472 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 19 treesize of output 7 [2025-01-08 22:35:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:37,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:37,786 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 25 treesize of output 23 [2025-01-08 22:35:37,790 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 54 treesize of output 50 [2025-01-08 22:35:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:38,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897967436] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:38,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:38,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 23] total 53 [2025-01-08 22:35:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241309107] [2025-01-08 22:35:38,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:38,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-01-08 22:35:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:38,074 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-01-08 22:35:38,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2585, Unknown=0, NotChecked=0, Total=2756 [2025-01-08 22:35:38,075 INFO L87 Difference]: Start difference. First operand 73 states and 86 transitions. Second operand has 53 states, 53 states have (on average 2.30188679245283) internal successors, (122), 53 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:38,670 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2025-01-08 22:35:38,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-08 22:35:38,672 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.30188679245283) internal successors, (122), 53 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-08 22:35:38,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:38,672 INFO L225 Difference]: With dead ends: 79 [2025-01-08 22:35:38,672 INFO L226 Difference]: Without dead ends: 77 [2025-01-08 22:35:38,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=277, Invalid=3629, Unknown=0, NotChecked=0, Total=3906 [2025-01-08 22:35:38,675 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 68 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:38,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 242 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:35:38,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-01-08 22:35:38,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2025-01-08 22:35:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 75 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2025-01-08 22:35:38,692 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 49 [2025-01-08 22:35:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:38,692 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2025-01-08 22:35:38,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.30188679245283) internal successors, (122), 53 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2025-01-08 22:35:38,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-01-08 22:35:38,692 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:38,692 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:38,700 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 22:35:38,893 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 22:35:38,893 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:38,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1096623198, now seen corresponding path program 16 times [2025-01-08 22:35:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:38,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519519992] [2025-01-08 22:35:38,894 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:35:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:38,901 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:35:38,915 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 22:35:38,915 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:35:38,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:39,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:39,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519519992] [2025-01-08 22:35:39,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519519992] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:39,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777496654] [2025-01-08 22:35:39,531 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:35:39,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:39,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:39,534 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 22:35:39,536 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 22:35:39,611 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-01-08 22:35:39,686 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 22:35:39,686 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:35:39,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:39,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-01-08 22:35:39,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:39,879 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 1 [2025-01-08 22:35:40,190 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 15 treesize of output 7 [2025-01-08 22:35:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:40,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:40,507 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 18 treesize of output 16 [2025-01-08 22:35:40,509 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 24 treesize of output 20 [2025-01-08 22:35:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:40,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777496654] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:40,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:40,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 64 [2025-01-08 22:35:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691611169] [2025-01-08 22:35:40,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:40,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-01-08 22:35:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:40,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-01-08 22:35:40,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=3707, Unknown=0, NotChecked=0, Total=4032 [2025-01-08 22:35:40,827 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 64 states, 64 states have (on average 2.359375) internal successors, (151), 64 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:41,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:41,800 INFO L93 Difference]: Finished difference Result 109 states and 123 transitions. [2025-01-08 22:35:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-08 22:35:41,801 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.359375) internal successors, (151), 64 states have internal predecessors, (151), 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 22:35:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:41,801 INFO L225 Difference]: With dead ends: 109 [2025-01-08 22:35:41,801 INFO L226 Difference]: Without dead ends: 76 [2025-01-08 22:35:41,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=524, Invalid=5482, Unknown=0, NotChecked=0, Total=6006 [2025-01-08 22:35:41,802 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:41,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 384 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-08 22:35:41,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-01-08 22:35:41,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2025-01-08 22:35:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1733333333333333) internal successors, (88), 75 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 88 transitions. [2025-01-08 22:35:41,817 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 88 transitions. Word has length 52 [2025-01-08 22:35:41,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:41,817 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 88 transitions. [2025-01-08 22:35:41,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.359375) internal successors, (151), 64 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 88 transitions. [2025-01-08 22:35:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-01-08 22:35:41,818 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:41,818 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:41,826 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 22:35:42,018 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 22:35:42,019 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:42,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:42,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1793316131, now seen corresponding path program 17 times [2025-01-08 22:35:42,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:42,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449154963] [2025-01-08 22:35:42,019 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:35:42,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:42,028 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 12 equivalence classes. [2025-01-08 22:35:42,054 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 54 of 54 statements. [2025-01-08 22:35:42,054 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-01-08 22:35:42,054 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:42,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:42,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449154963] [2025-01-08 22:35:42,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449154963] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:42,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322687469] [2025-01-08 22:35:42,669 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:35:42,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:42,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:42,671 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 22:35:42,674 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 22:35:42,757 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 12 equivalence classes. [2025-01-08 22:35:42,946 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 54 of 54 statements. [2025-01-08 22:35:42,946 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-01-08 22:35:42,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:42,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-01-08 22:35:42,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:43,261 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 1 [2025-01-08 22:35:43,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:35:43,292 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 27 treesize of output 11 [2025-01-08 22:35:43,655 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 15 treesize of output 7 [2025-01-08 22:35:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:43,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:44,134 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 25 treesize of output 23 [2025-01-08 22:35:44,138 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 54 treesize of output 50 [2025-01-08 22:35:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:44,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322687469] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:44,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:44,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 67 [2025-01-08 22:35:44,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104710573] [2025-01-08 22:35:44,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:44,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-01-08 22:35:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:44,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-01-08 22:35:44,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=4194, Unknown=0, NotChecked=0, Total=4422 [2025-01-08 22:35:44,524 INFO L87 Difference]: Start difference. First operand 76 states and 88 transitions. Second operand has 67 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 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 22:35:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:45,360 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2025-01-08 22:35:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-08 22:35:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 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) Word has length 54 [2025-01-08 22:35:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:45,362 INFO L225 Difference]: With dead ends: 82 [2025-01-08 22:35:45,362 INFO L226 Difference]: Without dead ends: 80 [2025-01-08 22:35:45,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=341, Invalid=5511, Unknown=0, NotChecked=0, Total=5852 [2025-01-08 22:35:45,363 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 81 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:45,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 468 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1644 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-08 22:35:45,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-01-08 22:35:45,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2025-01-08 22:35:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1666666666666667) internal successors, (91), 78 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2025-01-08 22:35:45,378 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 54 [2025-01-08 22:35:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:45,379 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2025-01-08 22:35:45,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.343283582089552) internal successors, (157), 67 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 22:35:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2025-01-08 22:35:45,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-01-08 22:35:45,380 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:45,380 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:45,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-01-08 22:35:45,584 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 22:35:45,584 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:45,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:45,584 INFO L85 PathProgramCache]: Analyzing trace with hash -412550798, now seen corresponding path program 18 times [2025-01-08 22:35:45,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:45,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219948424] [2025-01-08 22:35:45,585 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:35:45,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:45,594 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 12 equivalence classes. [2025-01-08 22:35:45,633 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 57 of 57 statements. [2025-01-08 22:35:45,633 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-01-08 22:35:45,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 84 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:46,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:46,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219948424] [2025-01-08 22:35:46,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219948424] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:46,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945134683] [2025-01-08 22:35:46,397 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:35:46,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:46,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:46,400 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 22:35:46,402 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 22:35:46,501 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 57 statements into 12 equivalence classes. [2025-01-08 22:35:47,005 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 57 of 57 statements. [2025-01-08 22:35:47,005 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-01-08 22:35:47,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:47,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-01-08 22:35:47,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:47,231 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 23 treesize of output 1 [2025-01-08 22:35:47,840 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:35:47,840 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 23 treesize of output 10 [2025-01-08 22:35:47,870 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 117 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:47,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:48,497 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 20 treesize of output 18 [2025-01-08 22:35:48,500 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 26 treesize of output 20 [2025-01-08 22:35:49,064 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 108 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:49,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945134683] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:49,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:49,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 69 [2025-01-08 22:35:49,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364930001] [2025-01-08 22:35:49,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:49,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2025-01-08 22:35:49,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:49,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2025-01-08 22:35:49,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=686, Invalid=4006, Unknown=0, NotChecked=0, Total=4692 [2025-01-08 22:35:49,066 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 69 states, 69 states have (on average 2.391304347826087) internal successors, (165), 69 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:49,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:49,391 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2025-01-08 22:35:49,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-08 22:35:49,391 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.391304347826087) internal successors, (165), 69 states have internal predecessors, (165), 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 57 [2025-01-08 22:35:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:49,392 INFO L225 Difference]: With dead ends: 112 [2025-01-08 22:35:49,392 INFO L226 Difference]: Without dead ends: 79 [2025-01-08 22:35:49,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=730, Invalid=4240, Unknown=0, NotChecked=0, Total=4970 [2025-01-08 22:35:49,393 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:49,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 133 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:35:49,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2025-01-08 22:35:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2025-01-08 22:35:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 78 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 22:35:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 90 transitions. [2025-01-08 22:35:49,403 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 90 transitions. Word has length 57 [2025-01-08 22:35:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:49,403 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 90 transitions. [2025-01-08 22:35:49,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.391304347826087) internal successors, (165), 69 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:49,404 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 90 transitions. [2025-01-08 22:35:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-08 22:35:49,404 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:49,404 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:49,414 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 22:35:49,604 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 22:35:49,605 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:49,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:49,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1723530189, now seen corresponding path program 19 times [2025-01-08 22:35:49,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:49,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339210763] [2025-01-08 22:35:49,606 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:35:49,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:49,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-01-08 22:35:49,631 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-01-08 22:35:49,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:49,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:50,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339210763] [2025-01-08 22:35:50,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339210763] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:50,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420200213] [2025-01-08 22:35:50,308 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:35:50,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:50,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:50,310 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 22:35:50,311 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 22:35:50,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-01-08 22:35:50,421 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-01-08 22:35:50,421 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:35:50,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:50,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-01-08 22:35:50,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:50,789 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 1 [2025-01-08 22:35:50,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:35:50,840 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 27 treesize of output 11 [2025-01-08 22:35:51,293 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 15 treesize of output 7 [2025-01-08 22:35:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:51,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:51,756 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 25 treesize of output 23 [2025-01-08 22:35:51,762 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 118 treesize of output 110 [2025-01-08 22:35:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:52,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420200213] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:52,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:52,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2025-01-08 22:35:52,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683095803] [2025-01-08 22:35:52,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:52,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-01-08 22:35:52,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:52,252 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-01-08 22:35:52,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=250, Invalid=5006, Unknown=0, NotChecked=0, Total=5256 [2025-01-08 22:35:52,253 INFO L87 Difference]: Start difference. First operand 79 states and 90 transitions. Second operand has 73 states, 73 states have (on average 2.356164383561644) internal successors, (172), 73 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:53,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:53,170 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2025-01-08 22:35:53,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-08 22:35:53,171 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.356164383561644) internal successors, (172), 73 states have internal predecessors, (172), 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 22:35:53,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:53,171 INFO L225 Difference]: With dead ends: 85 [2025-01-08 22:35:53,171 INFO L226 Difference]: Without dead ends: 83 [2025-01-08 22:35:53,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=379, Invalid=6761, Unknown=0, NotChecked=0, Total=7140 [2025-01-08 22:35:53,172 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 78 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:53,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 536 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-08 22:35:53,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-01-08 22:35:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2025-01-08 22:35:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 81 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 22:35:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2025-01-08 22:35:53,189 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 59 [2025-01-08 22:35:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:53,189 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2025-01-08 22:35:53,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.356164383561644) internal successors, (172), 73 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2025-01-08 22:35:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-08 22:35:53,189 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:53,190 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:53,198 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 22:35:53,390 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 22:35:53,390 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:53,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:53,391 INFO L85 PathProgramCache]: Analyzing trace with hash -641377656, now seen corresponding path program 20 times [2025-01-08 22:35:53,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:53,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724041421] [2025-01-08 22:35:53,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:53,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:53,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 62 statements into 2 equivalence classes. [2025-01-08 22:35:53,413 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 62 of 62 statements. [2025-01-08 22:35:53,413 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:53,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 108 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:54,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:54,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724041421] [2025-01-08 22:35:54,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724041421] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:54,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846986002] [2025-01-08 22:35:54,226 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:35:54,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:54,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:54,229 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 22:35:54,232 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 22:35:54,321 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 62 statements into 2 equivalence classes. [2025-01-08 22:35:54,352 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 62 of 62 statements. [2025-01-08 22:35:54,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:35:54,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:54,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-08 22:35:54,355 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:54,625 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 23 treesize of output 1 [2025-01-08 22:35:55,371 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:35:55,371 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 23 treesize of output 10 [2025-01-08 22:35:55,398 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 145 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:55,398 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:56,094 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 20 treesize of output 18 [2025-01-08 22:35:56,096 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 26 treesize of output 20 [2025-01-08 22:35:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 135 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:56,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846986002] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:56,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:35:56,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 75 [2025-01-08 22:35:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236112796] [2025-01-08 22:35:56,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:35:56,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2025-01-08 22:35:56,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:35:56,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2025-01-08 22:35:56,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=801, Invalid=4749, Unknown=0, NotChecked=0, Total=5550 [2025-01-08 22:35:56,680 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand has 75 states, 75 states have (on average 2.4) internal successors, (180), 75 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:35:57,166 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2025-01-08 22:35:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-08 22:35:57,167 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.4) internal successors, (180), 75 states have internal predecessors, (180), 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 22:35:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:35:57,167 INFO L225 Difference]: With dead ends: 118 [2025-01-08 22:35:57,167 INFO L226 Difference]: Without dead ends: 82 [2025-01-08 22:35:57,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=848, Invalid=5004, Unknown=0, NotChecked=0, Total=5852 [2025-01-08 22:35:57,168 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:35:57,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 189 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:35:57,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-01-08 22:35:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2025-01-08 22:35:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2025-01-08 22:35:57,184 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 62 [2025-01-08 22:35:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:35:57,184 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2025-01-08 22:35:57,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.4) internal successors, (180), 75 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:35:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2025-01-08 22:35:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-01-08 22:35:57,185 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:35:57,185 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2025-01-08 22:35:57,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-08 22:35:57,385 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 22:35:57,386 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:35:57,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:35:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash 581802253, now seen corresponding path program 21 times [2025-01-08 22:35:57,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:35:57,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263069314] [2025-01-08 22:35:57,386 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:35:57,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:35:57,394 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 14 equivalence classes. [2025-01-08 22:35:57,437 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 64 of 64 statements. [2025-01-08 22:35:57,437 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-01-08 22:35:57,437 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:58,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:35:58,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263069314] [2025-01-08 22:35:58,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263069314] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:35:58,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005712092] [2025-01-08 22:35:58,175 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:35:58,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:35:58,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:35:58,177 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 22:35:58,178 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 22:35:58,267 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 64 statements into 14 equivalence classes. [2025-01-08 22:35:58,613 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) and asserted 64 of 64 statements. [2025-01-08 22:35:58,613 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2025-01-08 22:35:58,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:35:58,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-01-08 22:35:58,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:35:58,689 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 19 treesize of output 1 [2025-01-08 22:35:58,721 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2025-01-08 22:35:58,721 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 33 treesize of output 13 [2025-01-08 22:35:59,048 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 19 treesize of output 7 [2025-01-08 22:35:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:59,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:35:59,531 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 25 treesize of output 23 [2025-01-08 22:35:59,534 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 54 treesize of output 50 [2025-01-08 22:35:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:35:59,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005712092] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:35:59,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:00,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 66 [2025-01-08 22:36:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817835276] [2025-01-08 22:36:00,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:00,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2025-01-08 22:36:00,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:00,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2025-01-08 22:36:00,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=4084, Unknown=0, NotChecked=0, Total=4290 [2025-01-08 22:36:00,002 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand has 66 states, 66 states have (on average 2.4393939393939394) internal successors, (161), 66 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 22:36:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:01,013 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2025-01-08 22:36:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-08 22:36:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.4393939393939394) internal successors, (161), 66 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 64 [2025-01-08 22:36:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:01,014 INFO L225 Difference]: With dead ends: 88 [2025-01-08 22:36:01,014 INFO L226 Difference]: Without dead ends: 86 [2025-01-08 22:36:01,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=328, Invalid=5678, Unknown=0, NotChecked=0, Total=6006 [2025-01-08 22:36:01,015 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 45 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 2145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:01,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 579 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2145 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:36:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-01-08 22:36:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2025-01-08 22:36:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.130952380952381) internal successors, (95), 84 states have internal predecessors, (95), 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 22:36:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2025-01-08 22:36:01,028 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 64 [2025-01-08 22:36:01,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:01,029 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2025-01-08 22:36:01,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.4393939393939394) internal successors, (161), 66 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 22:36:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2025-01-08 22:36:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-08 22:36:01,029 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:01,030 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:01,040 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 22:36:01,230 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 22:36:01,230 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:01,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2012302008, now seen corresponding path program 22 times [2025-01-08 22:36:01,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:01,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328499234] [2025-01-08 22:36:01,231 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:36:01,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:01,239 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-01-08 22:36:01,255 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-01-08 22:36:01,255 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:36:01,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 165 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:02,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:02,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328499234] [2025-01-08 22:36:02,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328499234] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:02,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412099056] [2025-01-08 22:36:02,054 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:36:02,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:02,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:02,056 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 22:36:02,057 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 22:36:02,148 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 67 statements into 2 equivalence classes. [2025-01-08 22:36:02,319 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 67 of 67 statements. [2025-01-08 22:36:02,319 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:36:02,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:02,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-01-08 22:36:02,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:02,561 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 23 treesize of output 1 [2025-01-08 22:36:03,287 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:36:03,287 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 23 treesize of output 10 [2025-01-08 22:36:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 176 proven. 193 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:03,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:03,992 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 20 treesize of output 18 [2025-01-08 22:36:03,994 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 26 treesize of output 20 [2025-01-08 22:36:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 165 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:04,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412099056] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:04,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:04,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 82 [2025-01-08 22:36:04,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454955213] [2025-01-08 22:36:04,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:04,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2025-01-08 22:36:04,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:04,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2025-01-08 22:36:04,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1107, Invalid=5535, Unknown=0, NotChecked=0, Total=6642 [2025-01-08 22:36:04,617 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 82 states, 82 states have (on average 2.3902439024390243) internal successors, (196), 82 states have internal predecessors, (196), 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 22:36:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:04,962 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2025-01-08 22:36:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-08 22:36:04,963 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.3902439024390243) internal successors, (196), 82 states have internal predecessors, (196), 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 67 [2025-01-08 22:36:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:04,963 INFO L225 Difference]: With dead ends: 124 [2025-01-08 22:36:04,963 INFO L226 Difference]: Without dead ends: 85 [2025-01-08 22:36:04,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2889 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1150, Invalid=5656, Unknown=0, NotChecked=0, Total=6806 [2025-01-08 22:36:04,964 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:04,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 164 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:36:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-01-08 22:36:04,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2025-01-08 22:36:04,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.119047619047619) internal successors, (94), 84 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 22:36:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2025-01-08 22:36:04,978 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 67 [2025-01-08 22:36:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:04,978 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2025-01-08 22:36:04,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.3902439024390243) internal successors, (196), 82 states have internal predecessors, (196), 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 22:36:04,979 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2025-01-08 22:36:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-01-08 22:36:04,979 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:04,979 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:04,988 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 22:36:05,179 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 22:36:05,180 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:05,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:05,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1066516963, now seen corresponding path program 23 times [2025-01-08 22:36:05,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:05,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210954671] [2025-01-08 22:36:05,180 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:36:05,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:05,189 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 69 statements into 15 equivalence classes. [2025-01-08 22:36:05,223 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 69 of 69 statements. [2025-01-08 22:36:05,223 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-08 22:36:05,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:06,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:06,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210954671] [2025-01-08 22:36:06,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210954671] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:06,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632324335] [2025-01-08 22:36:06,127 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:36:06,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:06,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:06,129 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 22:36:06,130 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 22:36:06,230 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 69 statements into 15 equivalence classes. [2025-01-08 22:36:06,485 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 69 of 69 statements. [2025-01-08 22:36:06,486 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-08 22:36:06,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:06,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-01-08 22:36:06,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:06,572 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 1 [2025-01-08 22:36:06,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:36:06,611 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 27 treesize of output 11 [2025-01-08 22:36:07,081 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 15 treesize of output 7 [2025-01-08 22:36:07,108 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:07,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:07,638 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 25 treesize of output 23 [2025-01-08 22:36:07,641 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 118 treesize of output 110 [2025-01-08 22:36:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 397 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:08,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632324335] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:08,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:08,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 71 [2025-01-08 22:36:08,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738227498] [2025-01-08 22:36:08,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:08,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-01-08 22:36:08,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:08,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-01-08 22:36:08,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=4748, Unknown=0, NotChecked=0, Total=4970 [2025-01-08 22:36:08,188 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 71 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 71 states have internal predecessors, (174), 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 22:36:09,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:09,297 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2025-01-08 22:36:09,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-01-08 22:36:09,297 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 71 states have internal predecessors, (174), 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 22:36:09,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:09,298 INFO L225 Difference]: With dead ends: 91 [2025-01-08 22:36:09,298 INFO L226 Difference]: Without dead ends: 89 [2025-01-08 22:36:09,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=355, Invalid=6617, Unknown=0, NotChecked=0, Total=6972 [2025-01-08 22:36:09,299 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 94 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:09,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 610 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-08 22:36:09,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-01-08 22:36:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2025-01-08 22:36:09,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 87 states have internal predecessors, (97), 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 22:36:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2025-01-08 22:36:09,317 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 69 [2025-01-08 22:36:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:09,317 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2025-01-08 22:36:09,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 71 states have internal predecessors, (174), 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 22:36:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2025-01-08 22:36:09,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-08 22:36:09,318 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:09,318 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:09,325 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 22:36:09,518 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 22:36:09,518 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:09,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:09,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1556425550, now seen corresponding path program 24 times [2025-01-08 22:36:09,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:09,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283614885] [2025-01-08 22:36:09,519 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:36:09,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:09,528 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 72 statements into 15 equivalence classes. [2025-01-08 22:36:09,566 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) and asserted 72 of 72 statements. [2025-01-08 22:36:09,567 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2025-01-08 22:36:09,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 165 proven. 267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:10,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:10,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283614885] [2025-01-08 22:36:10,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283614885] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:10,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332099659] [2025-01-08 22:36:10,562 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:36:10,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:10,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:10,563 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 22:36:10,564 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 22:36:10,666 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 72 statements into 15 equivalence classes. [2025-01-08 22:36:10,944 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) and asserted 72 of 72 statements. [2025-01-08 22:36:10,944 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2025-01-08 22:36:10,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:10,947 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-01-08 22:36:10,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:11,293 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 23 treesize of output 1 [2025-01-08 22:36:12,168 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:36:12,168 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 23 treesize of output 10 [2025-01-08 22:36:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 210 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:12,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:13,095 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 20 treesize of output 18 [2025-01-08 22:36:13,098 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 26 treesize of output 20 [2025-01-08 22:36:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 198 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:13,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332099659] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:13,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:13,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 87 [2025-01-08 22:36:13,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463657940] [2025-01-08 22:36:13,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:13,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2025-01-08 22:36:13,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:13,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2025-01-08 22:36:13,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1058, Invalid=6424, Unknown=0, NotChecked=0, Total=7482 [2025-01-08 22:36:13,841 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 87 states, 87 states have (on average 2.413793103448276) internal successors, (210), 87 states have internal predecessors, (210), 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 22:36:14,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:14,366 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2025-01-08 22:36:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-08 22:36:14,366 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.413793103448276) internal successors, (210), 87 states have internal predecessors, (210), 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 22:36:14,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:14,367 INFO L225 Difference]: With dead ends: 130 [2025-01-08 22:36:14,367 INFO L226 Difference]: Without dead ends: 88 [2025-01-08 22:36:14,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2383 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1111, Invalid=6721, Unknown=0, NotChecked=0, Total=7832 [2025-01-08 22:36:14,368 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:14,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 281 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:36:14,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-08 22:36:14,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-01-08 22:36:14,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.103448275862069) internal successors, (96), 87 states have internal predecessors, (96), 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 22:36:14,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2025-01-08 22:36:14,385 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 72 [2025-01-08 22:36:14,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:14,385 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2025-01-08 22:36:14,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 2.413793103448276) internal successors, (210), 87 states have internal predecessors, (210), 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 22:36:14,385 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2025-01-08 22:36:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-08 22:36:14,385 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:14,385 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:14,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-01-08 22:36:14,586 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 22:36:14,586 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:14,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:14,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1472302857, now seen corresponding path program 25 times [2025-01-08 22:36:14,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:14,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708787729] [2025-01-08 22:36:14,587 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:36:14,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:14,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-08 22:36:14,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-08 22:36:14,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:14,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:15,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:15,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708787729] [2025-01-08 22:36:15,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708787729] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:15,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884673267] [2025-01-08 22:36:15,596 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:36:15,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:15,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:15,598 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 22:36:15,599 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 22:36:15,708 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-01-08 22:36:15,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-01-08 22:36:15,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:36:15,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:15,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 83 conjuncts are in the unsatisfiable core [2025-01-08 22:36:15,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:36:16,237 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 1 [2025-01-08 22:36:16,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-08 22:36:16,276 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 27 treesize of output 11 [2025-01-08 22:36:16,894 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 15 treesize of output 7 [2025-01-08 22:36:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:16,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:36:17,566 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 25 treesize of output 23 [2025-01-08 22:36:17,568 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 118 treesize of output 110 [2025-01-08 22:36:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:18,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884673267] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:36:18,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:36:18,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 91 [2025-01-08 22:36:18,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417381553] [2025-01-08 22:36:18,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:36:18,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2025-01-08 22:36:18,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:36:18,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2025-01-08 22:36:18,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=7877, Unknown=0, NotChecked=0, Total=8190 [2025-01-08 22:36:18,228 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 91 states, 91 states have (on average 2.3846153846153846) internal successors, (217), 91 states have internal predecessors, (217), 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 22:36:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:36:19,681 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2025-01-08 22:36:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-01-08 22:36:19,682 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.3846153846153846) internal successors, (217), 91 states have internal predecessors, (217), 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 74 [2025-01-08 22:36:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:36:19,683 INFO L225 Difference]: With dead ends: 94 [2025-01-08 22:36:19,683 INFO L226 Difference]: Without dead ends: 92 [2025-01-08 22:36:19,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2364 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=475, Invalid=10655, Unknown=0, NotChecked=0, Total=11130 [2025-01-08 22:36:19,684 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 107 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 3146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:36:19,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 858 Invalid, 3146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3144 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-08 22:36:19,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-01-08 22:36:19,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2025-01-08 22:36:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.1) internal successors, (99), 90 states have internal predecessors, (99), 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 22:36:19,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2025-01-08 22:36:19,708 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 74 [2025-01-08 22:36:19,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:36:19,708 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2025-01-08 22:36:19,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.3846153846153846) internal successors, (217), 91 states have internal predecessors, (217), 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 22:36:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2025-01-08 22:36:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-01-08 22:36:19,709 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:36:19,709 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2025-01-08 22:36:19,719 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 22:36:19,910 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 22:36:19,910 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:36:19,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:36:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1163600610, now seen corresponding path program 26 times [2025-01-08 22:36:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:36:19,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922298826] [2025-01-08 22:36:19,911 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:36:19,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:36:19,921 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes. [2025-01-08 22:36:19,935 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 77 of 77 statements. [2025-01-08 22:36:19,935 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:36:19,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:36:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 198 proven. 302 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:36:20,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:36:20,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922298826] [2025-01-08 22:36:20,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922298826] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:36:20,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330155545] [2025-01-08 22:36:20,933 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:36:20,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:36:20,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:36:20,935 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 22:36:20,936 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 22:36:21,048 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 77 statements into 2 equivalence classes.