./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/sanfoundry_10_ground.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-examples/sanfoundry_10_ground.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 2638891780f697dd700286595ba75a607e61cda7473ecc330660e8dbb3e9ba64 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:00:08,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:00:08,414 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:00:08,418 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:00:08,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:00:08,433 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:00:08,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:00:08,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:00:08,434 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:00:08,434 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:00:08,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:00:08,434 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:00:08,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:00:08,435 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:00:08,435 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:00:08,435 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:00:08,435 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:00:08,435 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:00:08,435 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:00:08,435 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:00:08,435 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:00:08,436 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:00:08,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:00:08,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:00:08,436 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:00:08,437 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:00:08,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:00:08,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:00:08,437 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:00:08,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:00:08,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:00:08,437 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:00:08,437 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 -> 2638891780f697dd700286595ba75a607e61cda7473ecc330660e8dbb3e9ba64 [2025-01-08 22:00:08,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:00:08,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:00:08,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:00:08,677 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:00:08,677 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:00:08,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sanfoundry_10_ground.c [2025-01-08 22:00:09,768 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/22b3e7120/be092b5fb7d34178bd96a84fb362d930/FLAG67eaf484f [2025-01-08 22:00:09,970 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:00:09,971 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_10_ground.c [2025-01-08 22:00:09,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/22b3e7120/be092b5fb7d34178bd96a84fb362d930/FLAG67eaf484f [2025-01-08 22:00:10,004 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/22b3e7120/be092b5fb7d34178bd96a84fb362d930 [2025-01-08 22:00:10,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:00:10,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:00:10,010 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:00:10,013 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:00:10,018 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:00:10,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3a678c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10, skipping insertion in model container [2025-01-08 22:00:10,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,031 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:00:10,130 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-examples/sanfoundry_10_ground.c[324,337] [2025-01-08 22:00:10,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:00:10,149 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:00:10,157 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-examples/sanfoundry_10_ground.c[324,337] [2025-01-08 22:00:10,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:00:10,173 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:00:10,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10 WrapperNode [2025-01-08 22:00:10,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:00:10,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:00:10,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:00:10,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:00:10,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,186 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,198 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2025-01-08 22:00:10,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:00:10,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:00:10,200 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:00:10,200 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:00:10,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,207 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,219 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-01-08 22:00:10,219 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,219 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,225 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,225 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,232 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,232 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:00:10,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:00:10,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:00:10,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:00:10,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (1/1) ... [2025-01-08 22:00:10,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:00:10,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:10,263 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 22:00:10,268 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 22:00:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:00:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:00:10,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:00:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:00:10,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:00:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:00:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:00:10,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:00:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:00:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:00:10,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:00:10,338 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:00:10,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:00:10,464 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-01-08 22:00:10,464 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:00:10,475 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:00:10,475 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:00:10,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:00:10 BoogieIcfgContainer [2025-01-08 22:00:10,476 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:00:10,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:00:10,479 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:00:10,482 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:00:10,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:00:10" (1/3) ... [2025-01-08 22:00:10,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91fc135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:00:10, skipping insertion in model container [2025-01-08 22:00:10,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:00:10" (2/3) ... [2025-01-08 22:00:10,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91fc135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:00:10, skipping insertion in model container [2025-01-08 22:00:10,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:00:10" (3/3) ... [2025-01-08 22:00:10,485 INFO L128 eAbstractionObserver]: Analyzing ICFG sanfoundry_10_ground.c [2025-01-08 22:00:10,497 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:00:10,498 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sanfoundry_10_ground.c that has 1 procedures, 18 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-01-08 22:00:10,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:00:10,561 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;@6a6b0db5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:00:10,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:00:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:10,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-08 22:00:10,569 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:10,570 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:10,570 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:10,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:10,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1863888138, now seen corresponding path program 1 times [2025-01-08 22:00:10,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:10,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270354020] [2025-01-08 22:00:10,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:10,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:10,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-08 22:00:10,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-08 22:00:10,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:10,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:10,797 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 22:00:10,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:10,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270354020] [2025-01-08 22:00:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270354020] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:00:10,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:00:10,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:00:10,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961874484] [2025-01-08 22:00:10,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:00:10,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:00:10,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:10,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:00:10,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:00:10,817 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:10,851 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2025-01-08 22:00:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:00:10,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-08 22:00:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:10,857 INFO L225 Difference]: With dead ends: 34 [2025-01-08 22:00:10,857 INFO L226 Difference]: Without dead ends: 15 [2025-01-08 22:00:10,859 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 22:00:10,861 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:10,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:00:10,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-01-08 22:00:10,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-01-08 22:00:10,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2025-01-08 22:00:10,882 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 9 [2025-01-08 22:00:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:10,884 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2025-01-08 22:00:10,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2025-01-08 22:00:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-08 22:00:10,884 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:10,884 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:10,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:00:10,885 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:10,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash -107993578, now seen corresponding path program 1 times [2025-01-08 22:00:10,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:10,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831875700] [2025-01-08 22:00:10,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:10,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:10,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-08 22:00:10,898 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-08 22:00:10,898 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:10,898 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:11,024 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 22:00:11,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831875700] [2025-01-08 22:00:11,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831875700] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:00:11,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:00:11,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-08 22:00:11,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059749190] [2025-01-08 22:00:11,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:00:11,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-08 22:00:11,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:11,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-08 22:00:11,026 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-08 22:00:11,026 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:11,073 INFO L93 Difference]: Finished difference Result 31 states and 43 transitions. [2025-01-08 22:00:11,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-08 22:00:11,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-08 22:00:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:11,075 INFO L225 Difference]: With dead ends: 31 [2025-01-08 22:00:11,075 INFO L226 Difference]: Without dead ends: 21 [2025-01-08 22:00:11,076 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 22:00:11,077 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:11,077 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 21 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:00:11,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-08 22:00:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2025-01-08 22:00:11,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:11,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2025-01-08 22:00:11,080 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 10 [2025-01-08 22:00:11,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:11,080 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2025-01-08 22:00:11,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:11,080 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2025-01-08 22:00:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-01-08 22:00:11,081 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:11,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:11,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-08 22:00:11,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:11,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:11,082 INFO L85 PathProgramCache]: Analyzing trace with hash 756004572, now seen corresponding path program 1 times [2025-01-08 22:00:11,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:11,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094257801] [2025-01-08 22:00:11,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:11,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:11,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-01-08 22:00:11,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-01-08 22:00:11,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:11,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:00:11,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:11,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094257801] [2025-01-08 22:00:11,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094257801] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:00:11,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:00:11,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:00:11,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534709305] [2025-01-08 22:00:11,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:00:11,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:00:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:11,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:00:11,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:00:11,143 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:11,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:11,162 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2025-01-08 22:00:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:00:11,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-01-08 22:00:11,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:11,164 INFO L225 Difference]: With dead ends: 28 [2025-01-08 22:00:11,164 INFO L226 Difference]: Without dead ends: 17 [2025-01-08 22:00:11,164 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 22:00:11,165 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:11,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:00:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-01-08 22:00:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-01-08 22:00:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2025-01-08 22:00:11,169 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2025-01-08 22:00:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:11,169 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2025-01-08 22:00:11,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:11,169 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2025-01-08 22:00:11,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-08 22:00:11,170 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:11,170 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:11,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-08 22:00:11,170 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:11,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:11,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1726608854, now seen corresponding path program 1 times [2025-01-08 22:00:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:11,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248333425] [2025-01-08 22:00:11,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:11,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:11,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-08 22:00:11,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-08 22:00:11,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:11,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:11,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:00:11,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:11,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248333425] [2025-01-08 22:00:11,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248333425] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:11,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773198530] [2025-01-08 22:00:11,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:11,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:11,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:11,304 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 22:00:11,308 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 22:00:11,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-08 22:00:11,372 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-08 22:00:11,372 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:11,372 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:11,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-01-08 22:00:11,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:00:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:00:11,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:00:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:00:11,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773198530] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:00:11,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:00:11,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2025-01-08 22:00:11,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245936734] [2025-01-08 22:00:11,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:00:11,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-08 22:00:11,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:11,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-08 22:00:11,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2025-01-08 22:00:11,465 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:11,658 INFO L93 Difference]: Finished difference Result 55 states and 71 transitions. [2025-01-08 22:00:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:00:11,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-08 22:00:11,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:11,661 INFO L225 Difference]: With dead ends: 55 [2025-01-08 22:00:11,661 INFO L226 Difference]: Without dead ends: 42 [2025-01-08 22:00:11,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2025-01-08 22:00:11,662 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 56 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:11,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 27 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:00:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-01-08 22:00:11,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2025-01-08 22:00:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 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 22:00:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-01-08 22:00:11,667 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 14 [2025-01-08 22:00:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:11,667 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-01-08 22:00:11,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-01-08 22:00:11,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-01-08 22:00:11,668 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:11,668 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:11,676 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 22:00:11,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:11,872 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:11,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:11,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1284190854, now seen corresponding path program 1 times [2025-01-08 22:00:11,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:11,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683918440] [2025-01-08 22:00:11,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:11,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:11,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-08 22:00:11,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-08 22:00:11,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:11,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:00:12,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683918440] [2025-01-08 22:00:12,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683918440] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:12,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111258498] [2025-01-08 22:00:12,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:12,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:12,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:12,044 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 22:00:12,045 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 22:00:12,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-08 22:00:12,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-08 22:00:12,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:12,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:12,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-08 22:00:12,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:00:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:00:12,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:00:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:00:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111258498] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:00:12,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:00:12,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-01-08 22:00:12,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151885051] [2025-01-08 22:00:12,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:00:12,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-08 22:00:12,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:12,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-08 22:00:12,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:00:12,245 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:12,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:12,296 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2025-01-08 22:00:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:00:12,296 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-01-08 22:00:12,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:12,297 INFO L225 Difference]: With dead ends: 56 [2025-01-08 22:00:12,297 INFO L226 Difference]: Without dead ends: 35 [2025-01-08 22:00:12,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=142, Unknown=0, NotChecked=0, Total=272 [2025-01-08 22:00:12,298 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:12,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 46 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:00:12,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-01-08 22:00:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2025-01-08 22:00:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2025-01-08 22:00:12,305 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2025-01-08 22:00:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:12,306 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2025-01-08 22:00:12,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2025-01-08 22:00:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-08 22:00:12,307 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:12,307 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:12,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-08 22:00:12,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:12,508 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:12,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:12,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1527963270, now seen corresponding path program 2 times [2025-01-08 22:00:12,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:12,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757017755] [2025-01-08 22:00:12,509 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:00:12,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:12,519 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-08 22:00:12,536 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-08 22:00:12,537 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:00:12,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:00:12,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757017755] [2025-01-08 22:00:12,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757017755] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055402293] [2025-01-08 22:00:12,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:00:12,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:12,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:12,811 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 22:00:12,813 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 22:00:12,879 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-01-08 22:00:12,912 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-01-08 22:00:12,912 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:00:12,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:12,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-08 22:00:12,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:00:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:00:13,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:00:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-01-08 22:00:13,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055402293] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:00:13,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:00:13,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2025-01-08 22:00:13,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209870303] [2025-01-08 22:00:13,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:00:13,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-08 22:00:13,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:13,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-08 22:00:13,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2025-01-08 22:00:13,358 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 35 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 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 22:00:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:13,407 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2025-01-08 22:00:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-08 22:00:13,408 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 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 26 [2025-01-08 22:00:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:13,408 INFO L225 Difference]: With dead ends: 68 [2025-01-08 22:00:13,408 INFO L226 Difference]: Without dead ends: 47 [2025-01-08 22:00:13,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=550, Invalid=640, Unknown=0, NotChecked=0, Total=1190 [2025-01-08 22:00:13,409 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:13,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 49 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:00:13,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-01-08 22:00:13,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2025-01-08 22:00:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2025-01-08 22:00:13,415 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 26 [2025-01-08 22:00:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:13,415 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2025-01-08 22:00:13,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 35 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 22:00:13,416 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2025-01-08 22:00:13,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:00:13,416 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:13,416 INFO L218 NwaCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:13,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-08 22:00:13,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:13,618 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:13,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1552889478, now seen corresponding path program 3 times [2025-01-08 22:00:13,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:13,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532135615] [2025-01-08 22:00:13,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:00:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:13,633 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 12 equivalence classes. [2025-01-08 22:00:13,641 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 38 statements. [2025-01-08 22:00:13,641 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:00:13,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-08 22:00:13,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:13,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532135615] [2025-01-08 22:00:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532135615] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:13,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065725322] [2025-01-08 22:00:13,724 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:00:13,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:13,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:13,729 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 22:00:13,730 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 22:00:13,773 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 12 equivalence classes. [2025-01-08 22:00:13,786 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 20 of 38 statements. [2025-01-08 22:00:13,787 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:00:13,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:13,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:00:13,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:00:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-08 22:00:13,858 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:00:13,964 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-01-08 22:00:13,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065725322] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:00:13,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:00:13,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2025-01-08 22:00:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963727314] [2025-01-08 22:00:13,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:00:13,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-08 22:00:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:13,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-08 22:00:13,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2025-01-08 22:00:13,965 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 22:00:14,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:14,198 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2025-01-08 22:00:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-08 22:00:14,199 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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) Word has length 38 [2025-01-08 22:00:14,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:14,199 INFO L225 Difference]: With dead ends: 76 [2025-01-08 22:00:14,199 INFO L226 Difference]: Without dead ends: 70 [2025-01-08 22:00:14,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2025-01-08 22:00:14,200 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 65 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:14,200 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 41 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:00:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2025-01-08 22:00:14,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2025-01-08 22:00:14,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1403508771929824) internal successors, (65), 57 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:14,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2025-01-08 22:00:14,207 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 38 [2025-01-08 22:00:14,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:14,207 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2025-01-08 22:00:14,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 22:00:14,208 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2025-01-08 22:00:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-08 22:00:14,208 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:14,208 INFO L218 NwaCegarLoop]: trace histogram [22, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:14,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-08 22:00:14,409 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,SelfDestructingSolverStorable6 [2025-01-08 22:00:14,409 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:14,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2129398538, now seen corresponding path program 1 times [2025-01-08 22:00:14,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:14,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644075711] [2025-01-08 22:00:14,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:14,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:14,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-08 22:00:14,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:00:14,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:14,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2025-01-08 22:00:14,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:14,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644075711] [2025-01-08 22:00:14,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644075711] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:14,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556998668] [2025-01-08 22:00:14,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:14,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:14,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:14,522 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 22:00:14,523 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 22:00:14,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-08 22:00:14,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-08 22:00:14,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:14,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:14,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-08 22:00:14,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:00:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-08 22:00:15,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:00:15,884 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-08 22:00:15,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556998668] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:00:15,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:00:15,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 25, 25] total 51 [2025-01-08 22:00:15,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468448693] [2025-01-08 22:00:15,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:00:15,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-01-08 22:00:15,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:15,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-01-08 22:00:15,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1135, Invalid=1415, Unknown=0, NotChecked=0, Total=2550 [2025-01-08 22:00:15,887 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 51 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:16,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:16,093 INFO L93 Difference]: Finished difference Result 126 states and 165 transitions. [2025-01-08 22:00:16,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-01-08 22:00:16,094 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-01-08 22:00:16,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:16,094 INFO L225 Difference]: With dead ends: 126 [2025-01-08 22:00:16,094 INFO L226 Difference]: Without dead ends: 84 [2025-01-08 22:00:16,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1205, Invalid=1875, Unknown=0, NotChecked=0, Total=3080 [2025-01-08 22:00:16,096 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:16,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 57 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:00:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-01-08 22:00:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2025-01-08 22:00:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2025-01-08 22:00:16,103 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 38 [2025-01-08 22:00:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:16,103 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2025-01-08 22:00:16,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.411764705882353) internal successors, (72), 51 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2025-01-08 22:00:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-01-08 22:00:16,104 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:16,105 INFO L218 NwaCegarLoop]: trace histogram [46, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:16,110 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 22:00:16,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:16,306 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:16,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:16,306 INFO L85 PathProgramCache]: Analyzing trace with hash -282610766, now seen corresponding path program 1 times [2025-01-08 22:00:16,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:16,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85362661] [2025-01-08 22:00:16,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:16,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:16,323 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-01-08 22:00:16,347 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-01-08 22:00:16,347 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:16,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:17,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-08 22:00:17,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:17,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85362661] [2025-01-08 22:00:17,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85362661] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:17,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498824313] [2025-01-08 22:00:17,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:17,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:17,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:17,877 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 22:00:17,879 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 22:00:17,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-01-08 22:00:18,004 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-01-08 22:00:18,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:18,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:18,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-01-08 22:00:18,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:00:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-08 22:00:19,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:00:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-08 22:00:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498824313] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:00:21,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:00:21,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 143 [2025-01-08 22:00:21,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646858373] [2025-01-08 22:00:21,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:00:21,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2025-01-08 22:00:21,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:21,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2025-01-08 22:00:21,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9118, Invalid=11188, Unknown=0, NotChecked=0, Total=20306 [2025-01-08 22:00:21,605 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 143 states, 143 states have (on average 1.097902097902098) internal successors, (157), 143 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:21,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:21,739 INFO L93 Difference]: Finished difference Result 165 states and 225 transitions. [2025-01-08 22:00:21,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-01-08 22:00:21,739 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 1.097902097902098) internal successors, (157), 143 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-01-08 22:00:21,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:21,740 INFO L225 Difference]: With dead ends: 165 [2025-01-08 22:00:21,740 INFO L226 Difference]: Without dead ends: 132 [2025-01-08 22:00:21,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8693 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=9118, Invalid=11188, Unknown=0, NotChecked=0, Total=20306 [2025-01-08 22:00:21,744 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:21,744 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:00:21,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-01-08 22:00:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2025-01-08 22:00:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.054263565891473) internal successors, (136), 129 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 136 transitions. [2025-01-08 22:00:21,756 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 136 transitions. Word has length 65 [2025-01-08 22:00:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:21,756 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 136 transitions. [2025-01-08 22:00:21,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 1.097902097902098) internal successors, (157), 143 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:21,756 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 136 transitions. [2025-01-08 22:00:21,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-01-08 22:00:21,757 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:21,757 INFO L218 NwaCegarLoop]: trace histogram [94, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:21,764 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 22:00:21,957 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,SelfDestructingSolverStorable8 [2025-01-08 22:00:21,958 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:21,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash 374150066, now seen corresponding path program 2 times [2025-01-08 22:00:21,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:21,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363661586] [2025-01-08 22:00:21,958 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:00:21,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:21,990 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 113 statements into 2 equivalence classes. [2025-01-08 22:00:22,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 113 of 113 statements. [2025-01-08 22:00:22,041 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:00:22,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:27,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4476 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-08 22:00:27,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:27,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363661586] [2025-01-08 22:00:27,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363661586] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:27,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652740090] [2025-01-08 22:00:27,134 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:00:27,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:27,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:27,135 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 22:00:27,137 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 22:00:27,233 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 113 statements into 2 equivalence classes. [2025-01-08 22:00:27,309 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 113 of 113 statements. [2025-01-08 22:00:27,309 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:00:27,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:27,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 97 conjuncts are in the unsatisfiable core [2025-01-08 22:00:27,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:00:30,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4476 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-08 22:00:30,818 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:00:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4476 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-01-08 22:00:39,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652740090] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:00:39,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:00:39,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 287 [2025-01-08 22:00:39,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964219523] [2025-01-08 22:00:39,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:00:39,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 287 states [2025-01-08 22:00:39,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:39,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 287 interpolants. [2025-01-08 22:00:39,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36670, Invalid=45412, Unknown=0, NotChecked=0, Total=82082 [2025-01-08 22:00:39,026 INFO L87 Difference]: Start difference. First operand 130 states and 136 transitions. Second operand has 287 states, 287 states have (on average 1.048780487804878) internal successors, (301), 287 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:39,445 INFO L93 Difference]: Finished difference Result 261 states and 369 transitions. [2025-01-08 22:00:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-01-08 22:00:39,446 INFO L78 Accepts]: Start accepts. Automaton has has 287 states, 287 states have (on average 1.048780487804878) internal successors, (301), 287 states have internal predecessors, (301), 0 states have call successors, (0), 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 113 [2025-01-08 22:00:39,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:39,447 INFO L225 Difference]: With dead ends: 261 [2025-01-08 22:00:39,448 INFO L226 Difference]: Without dead ends: 228 [2025-01-08 22:00:39,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35813 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=36670, Invalid=45412, Unknown=0, NotChecked=0, Total=82082 [2025-01-08 22:00:39,450 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:39,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 46 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:00:39,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2025-01-08 22:00:39,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2025-01-08 22:00:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.031111111111111) internal successors, (232), 225 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 232 transitions. [2025-01-08 22:00:39,465 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 232 transitions. Word has length 113 [2025-01-08 22:00:39,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:39,465 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 232 transitions. [2025-01-08 22:00:39,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 287 states, 287 states have (on average 1.048780487804878) internal successors, (301), 287 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:39,466 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 232 transitions. [2025-01-08 22:00:39,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2025-01-08 22:00:39,467 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:39,468 INFO L218 NwaCegarLoop]: trace histogram [190, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:39,474 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 22:00:39,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:39,672 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:39,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:39,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2010633138, now seen corresponding path program 3 times [2025-01-08 22:00:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:39,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117877529] [2025-01-08 22:00:39,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:00:39,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:39,734 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 209 statements into 96 equivalence classes. [2025-01-08 22:00:39,741 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 209 statements. [2025-01-08 22:00:39,742 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:00:39,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 18156 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2025-01-08 22:00:39,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117877529] [2025-01-08 22:00:39,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117877529] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:39,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008698848] [2025-01-08 22:00:39,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:00:39,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:39,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:39,843 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 22:00:39,845 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 22:00:40,013 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 209 statements into 96 equivalence classes. [2025-01-08 22:00:40,028 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 23 of 209 statements. [2025-01-08 22:00:40,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-08 22:00:40,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:40,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-08 22:00:40,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:00:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 18156 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2025-01-08 22:00:40,264 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:00:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 18156 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2025-01-08 22:00:40,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008698848] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:00:40,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:00:40,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2025-01-08 22:00:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334992720] [2025-01-08 22:00:40,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:00:40,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-08 22:00:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:40,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-08 22:00:40,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2025-01-08 22:00:40,480 INFO L87 Difference]: Start difference. First operand 226 states and 232 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 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 22:00:40,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:40,795 INFO L93 Difference]: Finished difference Result 278 states and 302 transitions. [2025-01-08 22:00:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-08 22:00:40,795 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 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 209 [2025-01-08 22:00:40,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:40,796 INFO L225 Difference]: With dead ends: 278 [2025-01-08 22:00:40,796 INFO L226 Difference]: Without dead ends: 272 [2025-01-08 22:00:40,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 406 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=643, Invalid=1427, Unknown=0, NotChecked=0, Total=2070 [2025-01-08 22:00:40,797 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 115 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:40,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 99 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:00:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2025-01-08 22:00:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 241. [2025-01-08 22:00:40,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.0416666666666667) internal successors, (250), 240 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:40,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 250 transitions. [2025-01-08 22:00:40,810 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 250 transitions. Word has length 209 [2025-01-08 22:00:40,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:40,811 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 250 transitions. [2025-01-08 22:00:40,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 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 22:00:40,811 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 250 transitions. [2025-01-08 22:00:40,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2025-01-08 22:00:40,812 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:40,812 INFO L218 NwaCegarLoop]: trace histogram [190, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:40,818 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 22:00:41,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:41,016 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:41,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1511950282, now seen corresponding path program 4 times [2025-01-08 22:00:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:41,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001597276] [2025-01-08 22:00:41,017 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:00:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:41,070 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 213 statements into 2 equivalence classes. [2025-01-08 22:00:41,074 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 21 of 213 statements. [2025-01-08 22:00:41,074 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:00:41,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:41,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18167 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2025-01-08 22:00:41,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:41,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001597276] [2025-01-08 22:00:41,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001597276] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:41,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852360964] [2025-01-08 22:00:41,434 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:00:41,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:41,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:41,439 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 22:00:41,441 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 22:00:41,668 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 213 statements into 2 equivalence classes. [2025-01-08 22:00:41,677 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 21 of 213 statements. [2025-01-08 22:00:41,677 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-01-08 22:00:41,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:41,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-08 22:00:41,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:00:41,787 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-01-08 22:00:41,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2025-01-08 22:00:41,806 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-01-08 22:00:41,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2025-01-08 22:00:41,831 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-01-08 22:00:41,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2025-01-08 22:00:41,855 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2025-01-08 22:00:41,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2025-01-08 22:00:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18167 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 18145 trivial. 0 not checked. [2025-01-08 22:00:41,891 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:00:42,166 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-01-08 22:00:42,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2025-01-08 22:00:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18167 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 18148 trivial. 0 not checked. [2025-01-08 22:00:42,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852360964] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:00:42,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:00:42,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 12] total 21 [2025-01-08 22:00:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16777391] [2025-01-08 22:00:42,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:00:42,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-08 22:00:42,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:00:42,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-08 22:00:42,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2025-01-08 22:00:42,176 INFO L87 Difference]: Start difference. First operand 241 states and 250 transitions. Second operand has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:42,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:00:42,540 INFO L93 Difference]: Finished difference Result 268 states and 282 transitions. [2025-01-08 22:00:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-08 22:00:42,541 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2025-01-08 22:00:42,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:00:42,543 INFO L225 Difference]: With dead ends: 268 [2025-01-08 22:00:42,543 INFO L226 Difference]: Without dead ends: 266 [2025-01-08 22:00:42,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 415 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=246, Invalid=876, Unknown=0, NotChecked=0, Total=1122 [2025-01-08 22:00:42,544 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 56 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:00:42,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 53 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:00:42,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2025-01-08 22:00:42,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 243. [2025-01-08 22:00:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.0413223140495869) internal successors, (252), 242 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 252 transitions. [2025-01-08 22:00:42,574 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 252 transitions. Word has length 213 [2025-01-08 22:00:42,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:00:42,574 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 252 transitions. [2025-01-08 22:00:42,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 21 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:00:42,574 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 252 transitions. [2025-01-08 22:00:42,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2025-01-08 22:00:42,575 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:00:42,576 INFO L218 NwaCegarLoop]: trace histogram [190, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:00:42,583 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 22:00:42,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:42,777 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:00:42,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:00:42,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1184011532, now seen corresponding path program 1 times [2025-01-08 22:00:42,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:00:42,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545442756] [2025-01-08 22:00:42,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:42,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:00:42,831 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-08 22:00:42,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-08 22:00:42,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:00:42,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:00:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 18169 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:00:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:00:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545442756] [2025-01-08 22:00:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545442756] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:00:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676517855] [2025-01-08 22:00:59,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:00:59,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:00:59,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:00:59,686 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 22:00:59,687 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 22:00:59,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-08 22:01:00,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-08 22:01:00,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:01:00,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:01:00,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 193 conjuncts are in the unsatisfiable core [2025-01-08 22:01:00,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:01:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 18169 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-01-08 22:01:12,400 INFO L312 TraceCheckSpWp]: Computing backward predicates...