./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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/hardness-nfm22/hardness_operatoramount_amount100_file-1.i -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 d49e82c63c2bb2c50317e322b05c62ce756ce2b0f76f53e25c5542bb842ee0fc --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 01:55:39,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 01:55:39,765 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 01:55:39,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 01:55:39,770 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 01:55:39,797 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 01:55:39,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 01:55:39,798 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 01:55:39,798 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 01:55:39,798 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 01:55:39,799 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 01:55:39,799 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 01:55:39,800 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 01:55:39,800 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 01:55:39,800 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 01:55:39,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 01:55:39,800 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 01:55:39,801 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 01:55:39,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 01:55:39,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 01:55:39,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 01:55:39,802 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 -> d49e82c63c2bb2c50317e322b05c62ce756ce2b0f76f53e25c5542bb842ee0fc [2025-02-06 01:55:40,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 01:55:40,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 01:55:40,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 01:55:40,063 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 01:55:40,064 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 01:55:40,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-1.i [2025-02-06 01:55:41,375 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/26edc0e19/2b3c052dbeaf49458e4b9b6966fc37cd/FLAGe5c2af52d [2025-02-06 01:55:41,737 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 01:55:41,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount100_file-1.i [2025-02-06 01:55:41,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/26edc0e19/2b3c052dbeaf49458e4b9b6966fc37cd/FLAGe5c2af52d [2025-02-06 01:55:41,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/26edc0e19/2b3c052dbeaf49458e4b9b6966fc37cd [2025-02-06 01:55:41,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 01:55:41,983 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 01:55:41,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 01:55:41,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 01:55:41,990 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 01:55:41,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:55:41" (1/1) ... [2025-02-06 01:55:41,991 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80e500d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:41, skipping insertion in model container [2025-02-06 01:55:41,992 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 01:55:41" (1/1) ... [2025-02-06 01:55:42,015 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 01:55:42,122 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/hardness-nfm22/hardness_operatoramount_amount100_file-1.i[915,928] [2025-02-06 01:55:42,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 01:55:42,217 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 01:55:42,224 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/hardness-nfm22/hardness_operatoramount_amount100_file-1.i[915,928] [2025-02-06 01:55:42,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 01:55:42,272 INFO L204 MainTranslator]: Completed translation [2025-02-06 01:55:42,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42 WrapperNode [2025-02-06 01:55:42,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 01:55:42,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 01:55:42,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 01:55:42,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 01:55:42,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,284 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,311 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 257 [2025-02-06 01:55:42,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 01:55:42,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 01:55:42,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 01:55:42,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 01:55:42,322 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,325 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,337 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 01:55:42,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,357 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,366 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,373 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 01:55:42,374 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 01:55:42,374 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 01:55:42,374 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 01:55:42,375 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (1/1) ... [2025-02-06 01:55:42,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 01:55:42,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 01:55:42,409 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) [2025-02-06 01:55:42,414 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 [2025-02-06 01:55:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 01:55:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-02-06 01:55:42,432 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-02-06 01:55:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 01:55:42,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 01:55:42,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 01:55:42,511 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 01:55:42,513 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 01:55:42,934 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L196: havoc property_#t~ite28#1;havoc property_#t~bitwise26#1;havoc property_#t~bitwise27#1; [2025-02-06 01:55:42,996 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2025-02-06 01:55:42,997 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 01:55:43,018 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 01:55:43,018 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 01:55:43,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:55:43 BoogieIcfgContainer [2025-02-06 01:55:43,019 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 01:55:43,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 01:55:43,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 01:55:43,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 01:55:43,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 01:55:41" (1/3) ... [2025-02-06 01:55:43,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6603105c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:55:43, skipping insertion in model container [2025-02-06 01:55:43,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 01:55:42" (2/3) ... [2025-02-06 01:55:43,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6603105c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 01:55:43, skipping insertion in model container [2025-02-06 01:55:43,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 01:55:43" (3/3) ... [2025-02-06 01:55:43,027 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount100_file-1.i [2025-02-06 01:55:43,037 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 01:55:43,039 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount100_file-1.i that has 2 procedures, 115 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-02-06 01:55:43,104 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 01:55:43,112 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;@77041c61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 01:55:43,112 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 01:55:43,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-02-06 01:55:43,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2025-02-06 01:55:43,126 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 01:55:43,126 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 01:55:43,127 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 01:55:43,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 01:55:43,130 INFO L85 PathProgramCache]: Analyzing trace with hash -954355465, now seen corresponding path program 1 times [2025-02-06 01:55:43,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 01:55:43,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954675849] [2025-02-06 01:55:43,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:55:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 01:55:43,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 213 statements into 1 equivalence classes. [2025-02-06 01:55:43,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 213 of 213 statements. [2025-02-06 01:55:43,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:55:43,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:55:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2025-02-06 01:55:43,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 01:55:43,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954675849] [2025-02-06 01:55:43,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954675849] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 01:55:43,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297487520] [2025-02-06 01:55:43,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:55:43,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 01:55:43,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 01:55:43,508 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) [2025-02-06 01:55:43,509 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 [2025-02-06 01:55:43,614 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 213 statements into 1 equivalence classes. [2025-02-06 01:55:43,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 213 of 213 statements. [2025-02-06 01:55:43,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:55:43,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:55:43,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-02-06 01:55:43,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 01:55:43,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2025-02-06 01:55:43,742 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 01:55:43,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297487520] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 01:55:43,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 01:55:43,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-02-06 01:55:43,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163645196] [2025-02-06 01:55:43,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 01:55:43,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 01:55:43,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 01:55:43,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 01:55:43,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 01:55:43,767 INFO L87 Difference]: Start difference. First operand has 115 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 80 states have internal predecessors, (115), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2025-02-06 01:55:43,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 01:55:43,795 INFO L93 Difference]: Finished difference Result 224 states and 390 transitions. [2025-02-06 01:55:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 01:55:43,801 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) Word has length 213 [2025-02-06 01:55:43,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 01:55:43,809 INFO L225 Difference]: With dead ends: 224 [2025-02-06 01:55:43,814 INFO L226 Difference]: Without dead ends: 112 [2025-02-06 01:55:43,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 01:55:43,822 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 01:55:43,823 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 01:55:43,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-02-06 01:55:43,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2025-02-06 01:55:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 77 states have internal predecessors, (110), 33 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2025-02-06 01:55:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 176 transitions. [2025-02-06 01:55:43,868 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 176 transitions. Word has length 213 [2025-02-06 01:55:43,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 01:55:43,869 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 176 transitions. [2025-02-06 01:55:43,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 2 states have call successors, (33) [2025-02-06 01:55:43,869 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 176 transitions. [2025-02-06 01:55:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2025-02-06 01:55:43,871 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 01:55:43,872 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 01:55:43,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 01:55:44,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-02-06 01:55:44,074 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 01:55:44,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 01:55:44,075 INFO L85 PathProgramCache]: Analyzing trace with hash -2087427200, now seen corresponding path program 1 times [2025-02-06 01:55:44,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 01:55:44,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40980419] [2025-02-06 01:55:44,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:55:44,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 01:55:44,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 213 statements into 1 equivalence classes. [2025-02-06 01:55:44,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 213 of 213 statements. [2025-02-06 01:55:44,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:55:44,255 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:55:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2025-02-06 01:55:44,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 01:55:44,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40980419] [2025-02-06 01:55:44,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40980419] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 01:55:44,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 01:55:44,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 01:55:44,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063832930] [2025-02-06 01:55:44,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 01:55:44,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 01:55:44,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 01:55:44,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 01:55:44,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 01:55:44,573 INFO L87 Difference]: Start difference. First operand 112 states and 176 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-06 01:55:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 01:55:44,671 INFO L93 Difference]: Finished difference Result 330 states and 522 transitions. [2025-02-06 01:55:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 01:55:44,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) Word has length 213 [2025-02-06 01:55:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 01:55:44,675 INFO L225 Difference]: With dead ends: 330 [2025-02-06 01:55:44,675 INFO L226 Difference]: Without dead ends: 221 [2025-02-06 01:55:44,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 01:55:44,676 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 105 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 01:55:44,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 591 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 01:55:44,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2025-02-06 01:55:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2025-02-06 01:55:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 150 states have (on average 1.4333333333333333) internal successors, (215), 150 states have internal predecessors, (215), 66 states have call successors, (66), 2 states have call predecessors, (66), 2 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2025-02-06 01:55:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 347 transitions. [2025-02-06 01:55:44,712 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 347 transitions. Word has length 213 [2025-02-06 01:55:44,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 01:55:44,713 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 347 transitions. [2025-02-06 01:55:44,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (33), 1 states have call predecessors, (33), 1 states have return successors, (33), 1 states have call predecessors, (33), 1 states have call successors, (33) [2025-02-06 01:55:44,713 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 347 transitions. [2025-02-06 01:55:44,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2025-02-06 01:55:44,718 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 01:55:44,719 INFO L218 NwaCegarLoop]: trace histogram [33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 01:55:44,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 01:55:44,719 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 01:55:44,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 01:55:44,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1837085287, now seen corresponding path program 1 times [2025-02-06 01:55:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 01:55:44,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033223252] [2025-02-06 01:55:44,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:55:44,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 01:55:44,740 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-02-06 01:55:44,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-02-06 01:55:44,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:55:44,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:56:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 141 proven. 45 refuted. 0 times theorem prover too weak. 1926 trivial. 0 not checked. [2025-02-06 01:56:01,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 01:56:01,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033223252] [2025-02-06 01:56:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033223252] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 01:56:01,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362883160] [2025-02-06 01:56:01,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 01:56:01,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 01:56:01,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 01:56:01,746 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) [2025-02-06 01:56:01,747 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 [2025-02-06 01:56:01,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 214 statements into 1 equivalence classes. [2025-02-06 01:56:01,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 214 of 214 statements. [2025-02-06 01:56:01,909 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 01:56:01,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 01:56:01,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-06 01:56:01,921 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 01:56:17,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2112 backedges. 1568 proven. 231 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2025-02-06 01:56:17,642 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 01:56:22,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362883160] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 01:56:22,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 01:56:22,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 34] total 46 [2025-02-06 01:56:22,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096256077] [2025-02-06 01:56:22,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 01:56:22,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-06 01:56:22,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 01:56:22,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-06 01:56:22,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=2469, Unknown=2, NotChecked=0, Total=2862 [2025-02-06 01:56:22,270 INFO L87 Difference]: Start difference. First operand 219 states and 347 transitions. Second operand has 46 states, 46 states have (on average 3.0434782608695654) internal successors, (140), 43 states have internal predecessors, (140), 12 states have call successors, (66), 10 states have call predecessors, (66), 16 states have return successors, (66), 12 states have call predecessors, (66), 12 states have call successors, (66)