./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/zero_sum_m5.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-crafted/zero_sum_m5.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 afdb8b285c2183da613babde617c7580c3aee6b3bc694b080468400e828cda16 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:27:24,166 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:27:24,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:27:24,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:27:24,234 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:27:24,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:27:24,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:27:24,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:27:24,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:27:24,258 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:27:24,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:27:24,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:27:24,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:27:24,260 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:27:24,260 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:27:24,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:27:24,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:27:24,260 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:27:24,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:27:24,261 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:27:24,261 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:27:24,261 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:27:24,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:27:24,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:27:24,261 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:27:24,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:27:24,261 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:27:24,261 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:27:24,261 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:27:24,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:27:24,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:27:24,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:27:24,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:27:24,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:27:24,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:27:24,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:27:24,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:27:24,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:27:24,263 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 -> afdb8b285c2183da613babde617c7580c3aee6b3bc694b080468400e828cda16 [2025-01-08 22:27:24,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:27:24,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:27:24,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:27:24,513 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:27:24,513 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:27:24,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/zero_sum_m5.c [2025-01-08 22:27:25,658 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b82800bf1/69e8280a90a54aa3b092103546700296/FLAG2f270240c [2025-01-08 22:27:25,884 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:27:25,884 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_m5.c [2025-01-08 22:27:25,897 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b82800bf1/69e8280a90a54aa3b092103546700296/FLAG2f270240c [2025-01-08 22:27:26,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b82800bf1/69e8280a90a54aa3b092103546700296 [2025-01-08 22:27:26,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:27:26,236 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:27:26,237 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:27:26,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:27:26,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:27:26,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e18342c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26, skipping insertion in model container [2025-01-08 22:27:26,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,252 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:27:26,344 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_m5.c[402,415] [2025-01-08 22:27:26,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:27:26,367 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:27:26,374 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-crafted/zero_sum_m5.c[402,415] [2025-01-08 22:27:26,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:27:26,397 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:27:26,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26 WrapperNode [2025-01-08 22:27:26,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:27:26,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:27:26,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:27:26,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:27:26,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,427 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 119 [2025-01-08 22:27:26,428 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:27:26,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:27:26,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:27:26,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:27:26,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,434 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,447 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 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 22:27:26,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,453 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:27:26,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:27:26,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:27:26,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:27:26,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (1/1) ... [2025-01-08 22:27:26,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:27:26,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:26,501 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 22:27:26,505 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 22:27:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:27:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:27:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:27:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:27:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:27:26,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:27:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:27:26,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:27:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:27:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:27:26,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:27:26,577 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:27:26,579 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:27:26,721 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2025-01-08 22:27:26,721 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:27:26,730 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:27:26,730 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:27:26,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:27:26 BoogieIcfgContainer [2025-01-08 22:27:26,730 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:27:26,732 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:27:26,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:27:26,735 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:27:26,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:27:26" (1/3) ... [2025-01-08 22:27:26,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69532e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:27:26, skipping insertion in model container [2025-01-08 22:27:26,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:27:26" (2/3) ... [2025-01-08 22:27:26,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69532e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:27:26, skipping insertion in model container [2025-01-08 22:27:26,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:27:26" (3/3) ... [2025-01-08 22:27:26,739 INFO L128 eAbstractionObserver]: Analyzing ICFG zero_sum_m5.c [2025-01-08 22:27:26,748 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:27:26,749 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum_m5.c that has 1 procedures, 22 locations, 1 initial locations, 11 loop locations, and 1 error locations. [2025-01-08 22:27:26,785 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:27:26,793 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;@5e969fba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:27:26,793 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:27:26,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:26,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-08 22:27:26,799 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:26,800 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:26,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:26,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash 964683433, now seen corresponding path program 1 times [2025-01-08 22:27:26,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:26,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106007114] [2025-01-08 22:27:26,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:27:26,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:26,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-08 22:27:26,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-08 22:27:26,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:27:26,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:26,996 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 22:27:26,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106007114] [2025-01-08 22:27:26,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106007114] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:27:26,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:27:26,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:27:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750703934] [2025-01-08 22:27:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:27:27,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:27:27,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:27,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:27:27,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:27:27,016 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.7) internal successors, (34), 21 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 22:27:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:27,056 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2025-01-08 22:27:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:27:27,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) Word has length 16 [2025-01-08 22:27:27,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:27,061 INFO L225 Difference]: With dead ends: 41 [2025-01-08 22:27:27,061 INFO L226 Difference]: Without dead ends: 18 [2025-01-08 22:27:27,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:27:27,064 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:27,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:27:27,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2025-01-08 22:27:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2025-01-08 22:27:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2025-01-08 22:27:27,081 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 28 transitions. Word has length 16 [2025-01-08 22:27:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:27,081 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 28 transitions. [2025-01-08 22:27:27,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 22:27:27,081 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2025-01-08 22:27:27,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-01-08 22:27:27,081 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:27,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:27,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:27:27,082 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:27,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash 93653956, now seen corresponding path program 1 times [2025-01-08 22:27:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:27,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740689805] [2025-01-08 22:27:27,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:27:27,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:27,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-01-08 22:27:27,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-01-08 22:27:27,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:27:27,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:27,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:27:27,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:27,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740689805] [2025-01-08 22:27:27,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740689805] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:27:27,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:27:27,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:27:27,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768413677] [2025-01-08 22:27:27,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:27:27,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:27:27,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:27,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:27:27,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:27:27,162 INFO L87 Difference]: Start difference. First operand 18 states and 28 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:27,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:27,236 INFO L93 Difference]: Finished difference Result 40 states and 68 transitions. [2025-01-08 22:27:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:27:27,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-01-08 22:27:27,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:27,237 INFO L225 Difference]: With dead ends: 40 [2025-01-08 22:27:27,237 INFO L226 Difference]: Without dead ends: 28 [2025-01-08 22:27:27,237 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 22:27:27,238 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:27,238 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 7 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:27:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-08 22:27:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-01-08 22:27:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 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 22:27:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2025-01-08 22:27:27,243 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 17 [2025-01-08 22:27:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:27,243 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2025-01-08 22:27:27,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2025-01-08 22:27:27,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-08 22:27:27,243 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:27,243 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:27,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:27:27,244 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:27,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:27,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1842875546, now seen corresponding path program 1 times [2025-01-08 22:27:27,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:27,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311777470] [2025-01-08 22:27:27,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:27:27,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:27,252 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-08 22:27:27,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:27:27,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:27:27,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:27:27,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:27,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311777470] [2025-01-08 22:27:27,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311777470] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:27,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183891109] [2025-01-08 22:27:27,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:27:27,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:27,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:27,342 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 22:27:27,343 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 22:27:27,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-08 22:27:27,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-08 22:27:27,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:27:27,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:27,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:27:27,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:27:27,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:27:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:27:27,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183891109] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:27:27,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:27:27,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:27:27,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080249939] [2025-01-08 22:27:27,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:27:27,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:27:27,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:27,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:27:27,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:27:27,504 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:27,567 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2025-01-08 22:27:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:27:27,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-01-08 22:27:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:27,568 INFO L225 Difference]: With dead ends: 52 [2025-01-08 22:27:27,570 INFO L226 Difference]: Without dead ends: 29 [2025-01-08 22:27:27,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:27:27,571 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:27,571 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:27:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-08 22:27:27,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-01-08 22:27:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2025-01-08 22:27:27,579 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 27 [2025-01-08 22:27:27,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:27,579 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2025-01-08 22:27:27,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:27,579 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2025-01-08 22:27:27,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-01-08 22:27:27,580 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:27,580 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:27,588 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 22:27:27,784 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 22:27:27,784 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:27,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash 793131167, now seen corresponding path program 2 times [2025-01-08 22:27:27,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:27,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779041584] [2025-01-08 22:27:27,786 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:27:27,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:27,799 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-08 22:27:27,825 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:27:27,826 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:27:27,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:27:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779041584] [2025-01-08 22:27:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779041584] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276192701] [2025-01-08 22:27:27,947 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:27:27,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:27,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:27,950 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 22:27:27,952 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 22:27:27,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 2 equivalence classes. [2025-01-08 22:27:28,012 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 28 of 28 statements. [2025-01-08 22:27:28,012 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:27:28,012 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:28,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:27:28,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:27:28,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:27:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-01-08 22:27:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276192701] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:27:28,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:27:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-01-08 22:27:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583569787] [2025-01-08 22:27:28,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:27:28,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-08 22:27:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:28,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-08 22:27:28,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:27:28,083 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:28,150 INFO L93 Difference]: Finished difference Result 60 states and 88 transitions. [2025-01-08 22:27:28,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-08 22:27:28,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-01-08 22:27:28,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:28,151 INFO L225 Difference]: With dead ends: 60 [2025-01-08 22:27:28,151 INFO L226 Difference]: Without dead ends: 39 [2025-01-08 22:27:28,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2025-01-08 22:27:28,151 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:28,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 11 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:27:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-08 22:27:28,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-01-08 22:27:28,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 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 22:27:28,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2025-01-08 22:27:28,156 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 28 [2025-01-08 22:27:28,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:28,156 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2025-01-08 22:27:28,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2025-01-08 22:27:28,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:27:28,156 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:28,157 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:28,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-08 22:27:28,361 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 22:27:28,361 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:28,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:28,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2080467703, now seen corresponding path program 3 times [2025-01-08 22:27:28,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:28,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116237672] [2025-01-08 22:27:28,362 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:27:28,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:28,371 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:27:28,401 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:27:28,401 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:27:28,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:30,616 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:27:30,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116237672] [2025-01-08 22:27:30,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116237672] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:30,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113409301] [2025-01-08 22:27:30,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:27:30,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:30,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:30,621 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 22:27:30,623 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 22:27:30,659 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 2 equivalence classes. [2025-01-08 22:27:30,681 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:27:30,681 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-08 22:27:30,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:30,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 87 conjuncts are in the unsatisfiable core [2025-01-08 22:27:30,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:27:31,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:27:32,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-01-08 22:27:32,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2025-01-08 22:27:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-01-08 22:27:32,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113409301] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:27:32,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:27:32,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 29] total 64 [2025-01-08 22:27:32,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819134937] [2025-01-08 22:27:32,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:27:32,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-01-08 22:27:32,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:32,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-01-08 22:27:32,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=3843, Unknown=0, NotChecked=0, Total=4032 [2025-01-08 22:27:32,674 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 64 states, 64 states have (on average 1.46875) internal successors, (94), 64 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 22:27:33,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:33,563 INFO L93 Difference]: Finished difference Result 70 states and 89 transitions. [2025-01-08 22:27:33,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-08 22:27:33,563 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.46875) internal successors, (94), 64 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-01-08 22:27:33,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:33,564 INFO L225 Difference]: With dead ends: 70 [2025-01-08 22:27:33,564 INFO L226 Difference]: Without dead ends: 67 [2025-01-08 22:27:33,565 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=189, Invalid=3843, Unknown=0, NotChecked=0, Total=4032 [2025-01-08 22:27:33,566 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:33,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 265 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-08 22:27:33,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-01-08 22:27:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2025-01-08 22:27:33,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.3125) internal successors, (84), 64 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2025-01-08 22:27:33,573 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 38 [2025-01-08 22:27:33,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:33,573 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2025-01-08 22:27:33,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.46875) internal successors, (94), 64 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 22:27:33,573 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2025-01-08 22:27:33,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-08 22:27:33,574 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:33,574 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:33,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-08 22:27:33,778 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 22:27:33,778 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:33,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:33,778 INFO L85 PathProgramCache]: Analyzing trace with hash 2128075556, now seen corresponding path program 4 times [2025-01-08 22:27:33,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:33,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788220307] [2025-01-08 22:27:33,779 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:27:33,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:33,785 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-08 22:27:33,789 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 34 of 39 statements. [2025-01-08 22:27:33,789 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:27:33,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:27:33,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788220307] [2025-01-08 22:27:33,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788220307] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:33,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721330097] [2025-01-08 22:27:33,844 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:27:33,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:33,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:33,846 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 22:27:33,848 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 22:27:33,881 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-08 22:27:33,895 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 34 of 39 statements. [2025-01-08 22:27:33,895 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:27:33,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:33,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:27:33,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:27:33,936 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:27:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:27:33,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721330097] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:27:33,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:27:33,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2025-01-08 22:27:33,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222363450] [2025-01-08 22:27:33,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:27:33,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-08 22:27:33,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:33,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-08 22:27:33,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-01-08 22:27:33,969 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:34,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:34,169 INFO L93 Difference]: Finished difference Result 128 states and 172 transitions. [2025-01-08 22:27:34,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-08 22:27:34,169 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-08 22:27:34,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:34,170 INFO L225 Difference]: With dead ends: 128 [2025-01-08 22:27:34,170 INFO L226 Difference]: Without dead ends: 73 [2025-01-08 22:27:34,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:27:34,171 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:34,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:27:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-08 22:27:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2025-01-08 22:27:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.267605633802817) internal successors, (90), 71 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 22:27:34,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2025-01-08 22:27:34,177 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 39 [2025-01-08 22:27:34,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:34,177 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2025-01-08 22:27:34,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:34,177 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2025-01-08 22:27:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-08 22:27:34,178 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:34,178 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:34,192 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 22:27:34,378 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 22:27:34,378 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:34,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1381211174, now seen corresponding path program 5 times [2025-01-08 22:27:34,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:34,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906369989] [2025-01-08 22:27:34,379 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:27:34,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:34,392 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 3 equivalence classes. [2025-01-08 22:27:34,408 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:27:34,410 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-08 22:27:34,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:34,502 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:27:34,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:34,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906369989] [2025-01-08 22:27:34,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906369989] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:34,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295048287] [2025-01-08 22:27:34,502 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:27:34,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:34,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:34,510 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 22:27:34,511 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 22:27:34,548 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 3 equivalence classes. [2025-01-08 22:27:34,621 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) and asserted 39 of 39 statements. [2025-01-08 22:27:34,622 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2025-01-08 22:27:34,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:34,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:27:34,625 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:27:34,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:27:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-01-08 22:27:34,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295048287] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:27:34,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:27:34,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2025-01-08 22:27:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29306836] [2025-01-08 22:27:34,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:27:34,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-08 22:27:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:34,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-08 22:27:34,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-01-08 22:27:34,747 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:34,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:34,912 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2025-01-08 22:27:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-08 22:27:34,912 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-08 22:27:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:34,913 INFO L225 Difference]: With dead ends: 76 [2025-01-08 22:27:34,913 INFO L226 Difference]: Without dead ends: 49 [2025-01-08 22:27:34,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 68 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2025-01-08 22:27:34,914 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:34,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 23 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:27:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-01-08 22:27:34,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-01-08 22:27:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2025-01-08 22:27:34,922 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 39 [2025-01-08 22:27:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:34,922 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2025-01-08 22:27:34,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:34,923 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2025-01-08 22:27:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-01-08 22:27:34,923 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:34,923 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:34,930 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 22:27:35,123 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 22:27:35,124 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:35,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash 948205599, now seen corresponding path program 6 times [2025-01-08 22:27:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:35,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678287946] [2025-01-08 22:27:35,125 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:27:35,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:35,136 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 3 equivalence classes. [2025-01-08 22:27:35,151 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:27:35,152 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-08 22:27:35,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-01-08 22:27:35,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678287946] [2025-01-08 22:27:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678287946] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:35,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395873254] [2025-01-08 22:27:35,229 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:27:35,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:35,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:35,232 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 22:27:35,238 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 22:27:35,271 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 48 statements into 3 equivalence classes. [2025-01-08 22:27:35,295 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 48 of 48 statements. [2025-01-08 22:27:35,295 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-01-08 22:27:35,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:35,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-08 22:27:35,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-01-08 22:27:35,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:27:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-01-08 22:27:35,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395873254] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:27:35,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:27:35,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2025-01-08 22:27:35,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881625970] [2025-01-08 22:27:35,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:27:35,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:27:35,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:35,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:27:35,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:27:35,420 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:35,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:35,491 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2025-01-08 22:27:35,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-08 22:27:35,492 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-01-08 22:27:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:35,493 INFO L225 Difference]: With dead ends: 93 [2025-01-08 22:27:35,493 INFO L226 Difference]: Without dead ends: 50 [2025-01-08 22:27:35,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:27:35,493 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:35,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:27:35,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-01-08 22:27:35,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-01-08 22:27:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2025-01-08 22:27:35,502 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 48 [2025-01-08 22:27:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:35,502 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2025-01-08 22:27:35,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:35,502 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2025-01-08 22:27:35,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-01-08 22:27:35,503 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:35,503 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:35,512 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 22:27:35,703 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 22:27:35,704 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:35,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:35,704 INFO L85 PathProgramCache]: Analyzing trace with hash -460951238, now seen corresponding path program 7 times [2025-01-08 22:27:35,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:35,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403589555] [2025-01-08 22:27:35,705 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:27:35,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:35,712 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-08 22:27:35,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:27:35,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:27:35,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:27:39,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403589555] [2025-01-08 22:27:39,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403589555] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427178181] [2025-01-08 22:27:39,489 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:27:39,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:39,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:39,492 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 22:27:39,493 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 22:27:39,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-01-08 22:27:39,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-01-08 22:27:39,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:27:39,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:39,560 WARN L254 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 138 conjuncts are in the unsatisfiable core [2025-01-08 22:27:39,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:39,581 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 22:27:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:27:40,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:27:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-08 22:27:43,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427178181] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:27:43,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:27:43,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 39, 39] total 106 [2025-01-08 22:27:43,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625415618] [2025-01-08 22:27:43,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:27:43,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2025-01-08 22:27:43,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:43,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2025-01-08 22:27:43,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=10791, Unknown=0, NotChecked=0, Total=11130 [2025-01-08 22:27:43,526 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 106 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:51,070 INFO L93 Difference]: Finished difference Result 157 states and 198 transitions. [2025-01-08 22:27:51,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-01-08 22:27:51,070 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2025-01-08 22:27:51,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:51,071 INFO L225 Difference]: With dead ends: 157 [2025-01-08 22:27:51,071 INFO L226 Difference]: Without dead ends: 154 [2025-01-08 22:27:51,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5174 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=1055, Invalid=23437, Unknown=0, NotChecked=0, Total=24492 [2025-01-08 22:27:51,075 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 54 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 7305 mSolverCounterSat, 776 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 8081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 7305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:51,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 216 Invalid, 8081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 7305 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2025-01-08 22:27:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-01-08 22:27:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 94. [2025-01-08 22:27:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 93 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:51,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2025-01-08 22:27:51,095 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 49 [2025-01-08 22:27:51,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:51,096 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2025-01-08 22:27:51,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 106 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:51,096 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2025-01-08 22:27:51,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-01-08 22:27:51,097 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:51,097 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:51,103 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 22:27:51,298 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 22:27:51,299 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:51,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1420642889, now seen corresponding path program 8 times [2025-01-08 22:27:51,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:51,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626211042] [2025-01-08 22:27:51,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:27:51,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:51,305 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-01-08 22:27:51,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-01-08 22:27:51,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:27:51,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-01-08 22:27:51,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:51,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626211042] [2025-01-08 22:27:51,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626211042] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:51,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485711803] [2025-01-08 22:27:51,391 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:27:51,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:51,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:51,395 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 22:27:51,399 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 22:27:51,435 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-01-08 22:27:51,458 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-01-08 22:27:51,458 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:27:51,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:51,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:27:51,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-01-08 22:27:51,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:27:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-01-08 22:27:51,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485711803] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:27:51,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:27:51,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-01-08 22:27:51,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922249451] [2025-01-08 22:27:51,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:27:51,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:27:51,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:51,584 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:27:51,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:27:51,584 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 22:27:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:51,743 INFO L93 Difference]: Finished difference Result 176 states and 218 transitions. [2025-01-08 22:27:51,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-08 22:27:51,743 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-01-08 22:27:51,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:51,744 INFO L225 Difference]: With dead ends: 176 [2025-01-08 22:27:51,744 INFO L226 Difference]: Without dead ends: 69 [2025-01-08 22:27:51,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 87 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:27:51,746 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:51,746 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:27:51,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-01-08 22:27:51,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-01-08 22:27:51,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 84 transitions. [2025-01-08 22:27:51,768 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 84 transitions. Word has length 50 [2025-01-08 22:27:51,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:51,768 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 84 transitions. [2025-01-08 22:27:51,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 22:27:51,768 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 84 transitions. [2025-01-08 22:27:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-08 22:27:51,769 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:51,769 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:51,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-08 22:27:51,969 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 22:27:51,969 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:51,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash 135620772, now seen corresponding path program 9 times [2025-01-08 22:27:51,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:51,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747920240] [2025-01-08 22:27:51,970 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:27:51,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:51,976 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 51 statements into 3 equivalence classes. [2025-01-08 22:27:51,990 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 51 of 51 statements. [2025-01-08 22:27:51,990 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:27:51,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-01-08 22:27:52,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:52,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747920240] [2025-01-08 22:27:52,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747920240] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:52,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143400480] [2025-01-08 22:27:52,075 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:27:52,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:52,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:52,080 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 22:27:52,081 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 22:27:52,118 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 51 statements into 3 equivalence classes. [2025-01-08 22:27:52,144 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 51 of 51 statements. [2025-01-08 22:27:52,144 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:27:52,144 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:52,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-08 22:27:52,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-01-08 22:27:52,290 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:27:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-01-08 22:27:52,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143400480] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:27:52,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:27:52,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2025-01-08 22:27:52,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408777583] [2025-01-08 22:27:52,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:27:52,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:27:52,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:27:52,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:27:52,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:27:52,369 INFO L87 Difference]: Start difference. First operand 69 states and 84 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 22:27:52,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:27:52,499 INFO L93 Difference]: Finished difference Result 118 states and 151 transitions. [2025-01-08 22:27:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:27:52,500 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-01-08 22:27:52,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:27:52,500 INFO L225 Difference]: With dead ends: 118 [2025-01-08 22:27:52,500 INFO L226 Difference]: Without dead ends: 61 [2025-01-08 22:27:52,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:27:52,501 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 14 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:27:52,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 21 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:27:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-08 22:27:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-01-08 22:27:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:27:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2025-01-08 22:27:52,520 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 51 [2025-01-08 22:27:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:27:52,520 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2025-01-08 22:27:52,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 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 22:27:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2025-01-08 22:27:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2025-01-08 22:27:52,521 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:27:52,521 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:27:52,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-08 22:27:52,722 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 22:27:52,722 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:27:52,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:27:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1347173225, now seen corresponding path program 10 times [2025-01-08 22:27:52,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:27:52,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455009939] [2025-01-08 22:27:52,723 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:27:52,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:27:52,730 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 60 statements into 2 equivalence classes. [2025-01-08 22:27:52,780 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-01-08 22:27:52,783 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:27:52,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:57,075 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 3 proven. 97 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:27:57,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:27:57,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455009939] [2025-01-08 22:27:57,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455009939] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:27:57,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673324159] [2025-01-08 22:27:57,075 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:27:57,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:27:57,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:27:57,077 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 22:27:57,078 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 22:27:57,122 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 60 statements into 2 equivalence classes. [2025-01-08 22:27:57,153 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 60 of 60 statements. [2025-01-08 22:27:57,154 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:27:57,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:27:57,159 WARN L254 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 179 conjuncts are in the unsatisfiable core [2025-01-08 22:27:57,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:27:57,386 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 22:28:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:28:00,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:28:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-01-08 22:28:03,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673324159] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:28:03,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:28:03,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 50, 49] total 130 [2025-01-08 22:28:03,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231961140] [2025-01-08 22:28:03,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:28:03,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2025-01-08 22:28:03,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:28:03,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2025-01-08 22:28:03,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=16394, Unknown=0, NotChecked=0, Total=16770 [2025-01-08 22:28:03,764 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 130 states, 130 states have (on average 1.146153846153846) internal successors, (149), 130 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:28:14,932 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2025-01-08 22:28:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-01-08 22:28:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.146153846153846) internal successors, (149), 130 states have internal predecessors, (149), 0 states have call successors, (0), 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 60 [2025-01-08 22:28:14,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:28:14,936 INFO L225 Difference]: With dead ends: 186 [2025-01-08 22:28:14,936 INFO L226 Difference]: Without dead ends: 183 [2025-01-08 22:28:14,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6877 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=987, Invalid=32319, Unknown=0, NotChecked=0, Total=33306 [2025-01-08 22:28:14,938 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 12571 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 13167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 12571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2025-01-08 22:28:14,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 273 Invalid, 13167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 12571 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2025-01-08 22:28:14,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2025-01-08 22:28:14,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 78. [2025-01-08 22:28:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 77 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 22:28:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2025-01-08 22:28:14,995 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 60 [2025-01-08 22:28:14,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:28:14,995 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2025-01-08 22:28:14,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.146153846153846) internal successors, (149), 130 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:14,995 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2025-01-08 22:28:14,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-01-08 22:28:14,995 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:28:14,996 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:28:15,002 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 22:28:15,196 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 22:28:15,196 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:28:15,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:28:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1526779836, now seen corresponding path program 11 times [2025-01-08 22:28:15,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:28:15,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776100684] [2025-01-08 22:28:15,197 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:28:15,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:28:15,203 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 61 statements into 4 equivalence classes. [2025-01-08 22:28:15,213 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:28:15,214 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:28:15,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:28:15,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:28:15,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776100684] [2025-01-08 22:28:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776100684] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:28:15,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371735965] [2025-01-08 22:28:15,303 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:28:15,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:28:15,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:28:15,306 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 22:28:15,309 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 22:28:15,348 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 61 statements into 4 equivalence classes. [2025-01-08 22:28:15,457 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 61 of 61 statements. [2025-01-08 22:28:15,458 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:28:15,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:15,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:28:15,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:28:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:28:15,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:28:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-01-08 22:28:15,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371735965] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:28:15,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:28:15,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 18 [2025-01-08 22:28:15,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554702199] [2025-01-08 22:28:15,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:28:15,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-08 22:28:15,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:28:15,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-08 22:28:15,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-01-08 22:28:15,612 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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 22:28:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:28:15,923 INFO L93 Difference]: Finished difference Result 195 states and 237 transitions. [2025-01-08 22:28:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-08 22:28:15,924 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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) Word has length 61 [2025-01-08 22:28:15,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:28:15,925 INFO L225 Difference]: With dead ends: 195 [2025-01-08 22:28:15,925 INFO L226 Difference]: Without dead ends: 89 [2025-01-08 22:28:15,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 113 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:28:15,927 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 293 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 293 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:28:15,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 25 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [293 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:28:15,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-01-08 22:28:15,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2025-01-08 22:28:15,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1666666666666667) internal successors, (98), 84 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:15,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2025-01-08 22:28:15,974 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 61 [2025-01-08 22:28:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:28:15,975 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2025-01-08 22:28:15,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 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 22:28:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2025-01-08 22:28:15,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-08 22:28:15,975 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:28:15,975 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:28:15,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-08 22:28:16,176 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 22:28:16,176 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:28:16,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:28:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash -576406845, now seen corresponding path program 12 times [2025-01-08 22:28:16,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:28:16,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522647500] [2025-01-08 22:28:16,176 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:28:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:28:16,183 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 66 statements into 4 equivalence classes. [2025-01-08 22:28:16,204 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 66 of 66 statements. [2025-01-08 22:28:16,204 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:28:16,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2025-01-08 22:28:16,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:28:16,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522647500] [2025-01-08 22:28:16,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522647500] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:28:16,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666247491] [2025-01-08 22:28:16,356 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-08 22:28:16,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:28:16,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:28:16,360 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 22:28:16,361 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 22:28:16,399 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 66 statements into 4 equivalence classes. [2025-01-08 22:28:16,433 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 66 of 66 statements. [2025-01-08 22:28:16,433 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-08 22:28:16,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:16,434 INFO L256 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-08 22:28:16,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:28:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2025-01-08 22:28:16,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:28:16,716 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2025-01-08 22:28:16,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666247491] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:28:16,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:28:16,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2025-01-08 22:28:16,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849230049] [2025-01-08 22:28:16,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:28:16,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-08 22:28:16,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:28:16,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-08 22:28:16,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:28:16,718 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:28:17,085 INFO L93 Difference]: Finished difference Result 149 states and 176 transitions. [2025-01-08 22:28:17,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-08 22:28:17,086 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-01-08 22:28:17,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:28:17,087 INFO L225 Difference]: With dead ends: 149 [2025-01-08 22:28:17,087 INFO L226 Difference]: Without dead ends: 72 [2025-01-08 22:28:17,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=1011, Unknown=0, NotChecked=0, Total=1190 [2025-01-08 22:28:17,088 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 49 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:28:17,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 36 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:28:17,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-01-08 22:28:17,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-01-08 22:28:17,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 71 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 22:28:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2025-01-08 22:28:17,124 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 66 [2025-01-08 22:28:17,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:28:17,124 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2025-01-08 22:28:17,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2025-01-08 22:28:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-08 22:28:17,125 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:28:17,125 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:28:17,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-08 22:28:17,325 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 22:28:17,326 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:28:17,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:28:17,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1849908698, now seen corresponding path program 13 times [2025-01-08 22:28:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:28:17,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409809949] [2025-01-08 22:28:17,327 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:28:17,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:28:17,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-08 22:28:17,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-08 22:28:17,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:28:17,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:23,506 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 9 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:28:23,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:28:23,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409809949] [2025-01-08 22:28:23,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409809949] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:28:23,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022906427] [2025-01-08 22:28:23,506 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-08 22:28:23,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:28:23,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:28:23,511 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 22:28:23,513 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 22:28:23,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-01-08 22:28:23,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-01-08 22:28:23,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:28:23,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:23,619 WARN L254 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 222 conjuncts are in the unsatisfiable core [2025-01-08 22:28:23,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:28:23,694 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 22:28:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:28:27,375 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:28:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-01-08 22:28:33,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022906427] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:28:33,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:28:33,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 61, 59] total 169 [2025-01-08 22:28:33,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659729628] [2025-01-08 22:28:33,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:28:33,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 169 states [2025-01-08 22:28:33,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:28:33,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 169 interpolants. [2025-01-08 22:28:33,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=558, Invalid=27834, Unknown=0, NotChecked=0, Total=28392 [2025-01-08 22:28:33,805 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand has 169 states, 169 states have (on average 1.1420118343195267) internal successors, (193), 169 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:28:47,523 INFO L93 Difference]: Finished difference Result 155 states and 183 transitions. [2025-01-08 22:28:47,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-01-08 22:28:47,524 INFO L78 Accepts]: Start accepts. Automaton has has 169 states, 169 states have (on average 1.1420118343195267) internal successors, (193), 169 states have internal predecessors, (193), 0 states have call successors, (0), 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 71 [2025-01-08 22:28:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:28:47,525 INFO L225 Difference]: With dead ends: 155 [2025-01-08 22:28:47,525 INFO L226 Difference]: Without dead ends: 152 [2025-01-08 22:28:47,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12203 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=1595, Invalid=51997, Unknown=0, NotChecked=0, Total=53592 [2025-01-08 22:28:47,528 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 24 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 13502 mSolverCounterSat, 765 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 14267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 765 IncrementalHoareTripleChecker+Valid, 13502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:28:47,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 320 Invalid, 14267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [765 Valid, 13502 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2025-01-08 22:28:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-01-08 22:28:47,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 98. [2025-01-08 22:28:47,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 97 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2025-01-08 22:28:47,591 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 71 [2025-01-08 22:28:47,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:28:47,592 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2025-01-08 22:28:47,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 169 states, 169 states have (on average 1.1420118343195267) internal successors, (193), 169 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2025-01-08 22:28:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-08 22:28:47,593 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:28:47,593 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:28:47,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-08 22:28:47,797 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 22:28:47,797 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:28:47,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:28:47,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2113753385, now seen corresponding path program 14 times [2025-01-08 22:28:47,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:28:47,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698518690] [2025-01-08 22:28:47,797 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:28:47,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:28:47,805 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-01-08 22:28:47,812 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-01-08 22:28:47,812 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:28:47,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-08 22:28:47,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:28:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698518690] [2025-01-08 22:28:47,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698518690] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:28:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973717460] [2025-01-08 22:28:47,937 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:28:47,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:28:47,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:28:47,940 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 22:28:47,941 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 22:28:47,989 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 72 statements into 2 equivalence classes. [2025-01-08 22:28:48,020 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 72 of 72 statements. [2025-01-08 22:28:48,020 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:28:48,020 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:48,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:28:48,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:28:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-08 22:28:48,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:28:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-01-08 22:28:48,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973717460] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:28:48,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:28:48,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-01-08 22:28:48,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574048538] [2025-01-08 22:28:48,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:28:48,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:28:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:28:48,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:28:48,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:28:48,216 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 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 22:28:48,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:28:48,494 INFO L93 Difference]: Finished difference Result 243 states and 282 transitions. [2025-01-08 22:28:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:28:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 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) Word has length 72 [2025-01-08 22:28:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:28:48,495 INFO L225 Difference]: With dead ends: 243 [2025-01-08 22:28:48,495 INFO L226 Difference]: Without dead ends: 99 [2025-01-08 22:28:48,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 125 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:28:48,496 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:28:48,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 18 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:28:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-01-08 22:28:48,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-01-08 22:28:48,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.163265306122449) internal successors, (114), 98 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:48,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2025-01-08 22:28:48,557 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 72 [2025-01-08 22:28:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:28:48,557 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2025-01-08 22:28:48,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 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 22:28:48,557 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2025-01-08 22:28:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-08 22:28:48,558 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:28:48,558 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:28:48,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-01-08 22:28:48,761 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 22:28:48,761 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:28:48,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:28:48,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1660709188, now seen corresponding path program 15 times [2025-01-08 22:28:48,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:28:48,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64949188] [2025-01-08 22:28:48,762 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:28:48,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:28:48,769 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 73 statements into 4 equivalence classes. [2025-01-08 22:28:48,800 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:28:48,800 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-08 22:28:48,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:48,966 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-01-08 22:28:48,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:28:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64949188] [2025-01-08 22:28:48,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64949188] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:28:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281646649] [2025-01-08 22:28:48,967 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:28:48,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:28:48,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:28:48,971 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 22:28:48,972 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 22:28:49,016 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 73 statements into 4 equivalence classes. [2025-01-08 22:28:49,059 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 73 of 73 statements. [2025-01-08 22:28:49,060 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-01-08 22:28:49,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:49,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:28:49,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:28:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-01-08 22:28:49,154 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:28:49,252 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-01-08 22:28:49,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281646649] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:28:49,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:28:49,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2025-01-08 22:28:49,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934735306] [2025-01-08 22:28:49,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:28:49,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:28:49,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:28:49,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:28:49,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:28:49,253 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 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 22:28:49,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:28:49,759 INFO L93 Difference]: Finished difference Result 214 states and 254 transitions. [2025-01-08 22:28:49,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:28:49,759 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 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) Word has length 73 [2025-01-08 22:28:49,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:28:49,760 INFO L225 Difference]: With dead ends: 214 [2025-01-08 22:28:49,760 INFO L226 Difference]: Without dead ends: 137 [2025-01-08 22:28:49,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 132 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2025-01-08 22:28:49,761 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-08 22:28:49,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-08 22:28:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-01-08 22:28:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2025-01-08 22:28:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.153225806451613) internal successors, (143), 124 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:28:49,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 143 transitions. [2025-01-08 22:28:49,850 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 143 transitions. Word has length 73 [2025-01-08 22:28:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:28:49,850 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 143 transitions. [2025-01-08 22:28:49,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 23 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 22:28:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 143 transitions. [2025-01-08 22:28:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-08 22:28:49,851 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:28:49,851 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:28:49,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-08 22:28:50,051 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 22:28:50,052 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:28:50,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:28:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1059488142, now seen corresponding path program 16 times [2025-01-08 22:28:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:28:50,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526209160] [2025-01-08 22:28:50,053 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:28:50,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:28:50,059 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 73 statements into 2 equivalence classes. [2025-01-08 22:28:50,064 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 64 of 73 statements. [2025-01-08 22:28:50,064 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:28:50,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-01-08 22:28:50,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:28:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526209160] [2025-01-08 22:28:50,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526209160] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:28:50,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548416588] [2025-01-08 22:28:50,172 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:28:50,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:28:50,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:28:50,177 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 22:28:50,178 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 22:28:50,225 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 73 statements into 2 equivalence classes. [2025-01-08 22:28:50,250 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 64 of 73 statements. [2025-01-08 22:28:50,251 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:28:50,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:50,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-08 22:28:50,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:28:50,366 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-01-08 22:28:50,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:28:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2025-01-08 22:28:50,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548416588] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:28:50,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:28:50,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2025-01-08 22:28:50,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470101945] [2025-01-08 22:28:50,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:28:50,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-08 22:28:50,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:28:50,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-08 22:28:50,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:28:50,468 INFO L87 Difference]: Start difference. First operand 125 states and 143 transitions. Second operand has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 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 22:28:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:28:50,869 INFO L93 Difference]: Finished difference Result 197 states and 224 transitions. [2025-01-08 22:28:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-08 22:28:50,869 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2025-01-08 22:28:50,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:28:50,870 INFO L225 Difference]: With dead ends: 197 [2025-01-08 22:28:50,870 INFO L226 Difference]: Without dead ends: 83 [2025-01-08 22:28:50,871 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 128 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2025-01-08 22:28:50,871 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-08 22:28:50,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-08 22:28:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-01-08 22:28:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-01-08 22:28:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 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 22:28:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2025-01-08 22:28:50,930 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 73 [2025-01-08 22:28:50,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:28:50,930 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2025-01-08 22:28:50,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 21 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 22:28:50,930 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2025-01-08 22:28:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-01-08 22:28:50,930 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:28:50,930 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:28:50,936 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 22:28:51,135 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 22:28:51,135 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:28:51,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:28:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -572073527, now seen corresponding path program 17 times [2025-01-08 22:28:51,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:28:51,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289284564] [2025-01-08 22:28:51,136 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:28:51,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:28:51,143 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 82 statements into 4 equivalence classes. [2025-01-08 22:28:51,471 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 82 of 82 statements. [2025-01-08 22:28:51,471 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:28:51,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:28:58,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:28:58,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289284564] [2025-01-08 22:28:58,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289284564] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:28:58,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358457677] [2025-01-08 22:28:58,215 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-08 22:28:58,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:28:58,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:28:58,217 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 22:28:58,218 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 22:28:58,271 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 82 statements into 4 equivalence classes. [2025-01-08 22:28:58,373 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 82 of 82 statements. [2025-01-08 22:28:58,373 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-08 22:28:58,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:28:58,380 WARN L254 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 269 conjuncts are in the unsatisfiable core [2025-01-08 22:28:58,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:28:58,538 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 22:28:58,618 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 22:28:58,701 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 22:28:58,783 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 22:28:58,869 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