./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i --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/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.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 32753d18822513354e4b9efa6f4c19579a930a0a9d80feee2c0fa6780fee33a5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 11:55:38,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 11:55:38,814 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 11:55:38,818 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 11:55:38,818 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 11:55:38,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 11:55:38,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 11:55:38,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 11:55:38,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 11:55:38,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 11:55:38,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 11:55:38,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 11:55:38,835 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 11:55:38,836 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:55:38,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:55:38,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 11:55:38,836 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 11:55:38,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 11:55:38,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 11:55:38,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 11:55:38,837 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 -> 32753d18822513354e4b9efa6f4c19579a930a0a9d80feee2c0fa6780fee33a5 [2025-01-09 11:55:39,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 11:55:39,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 11:55:39,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 11:55:39,090 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 11:55:39,090 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 11:55:39,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i [2025-01-09 11:55:40,218 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebe4d9f42/251a10df964b4070a56c98b968a41c04/FLAG967700ece [2025-01-09 11:55:40,472 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 11:55:40,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i [2025-01-09 11:55:40,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebe4d9f42/251a10df964b4070a56c98b968a41c04/FLAG967700ece [2025-01-09 11:55:40,790 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/ebe4d9f42/251a10df964b4070a56c98b968a41c04 [2025-01-09 11:55:40,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 11:55:40,792 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 11:55:40,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 11:55:40,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 11:55:40,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 11:55:40,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:40,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4412e5fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40, skipping insertion in model container [2025-01-09 11:55:40,797 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:40,808 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 11:55:40,885 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_fillercode_fillercodestructure_filler-ps-cn_file-59.i[919,932] [2025-01-09 11:55:40,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:55:40,933 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 11:55:40,939 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_fillercode_fillercodestructure_filler-ps-cn_file-59.i[919,932] [2025-01-09 11:55:40,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 11:55:40,971 INFO L204 MainTranslator]: Completed translation [2025-01-09 11:55:40,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40 WrapperNode [2025-01-09 11:55:40,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 11:55:40,973 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 11:55:40,973 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 11:55:40,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 11:55:40,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:40,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,027 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2025-01-09 11:55:41,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 11:55:41,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 11:55:41,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 11:55:41,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 11:55:41,036 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,039 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,058 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]. [2025-01-09 11:55:41,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,077 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,090 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 11:55:41,096 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 11:55:41,096 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 11:55:41,096 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 11:55:41,097 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (1/1) ... [2025-01-09 11:55:41,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 11:55:41,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:55:41,122 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) [2025-01-09 11:55:41,124 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 [2025-01-09 11:55:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 11:55:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 11:55:41,142 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 11:55:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 11:55:41,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 11:55:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 11:55:41,201 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 11:55:41,202 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 11:55:41,504 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-01-09 11:55:41,504 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 11:55:41,514 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 11:55:41,514 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 11:55:41,515 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:55:41 BoogieIcfgContainer [2025-01-09 11:55:41,515 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 11:55:41,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 11:55:41,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 11:55:41,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 11:55:41,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 11:55:40" (1/3) ... [2025-01-09 11:55:41,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557fbfce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:55:41, skipping insertion in model container [2025-01-09 11:55:41,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 11:55:40" (2/3) ... [2025-01-09 11:55:41,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557fbfce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 11:55:41, skipping insertion in model container [2025-01-09 11:55:41,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 11:55:41" (3/3) ... [2025-01-09 11:55:41,523 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i [2025-01-09 11:55:41,539 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 11:55:41,541 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-cn_file-59.i that has 2 procedures, 103 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-01-09 11:55:41,588 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 11:55:41,595 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;@29f6b994, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 11:55:41,596 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 11:55:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 67 states have internal predecessors, (96), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-01-09 11:55:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-01-09 11:55:41,608 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:55:41,608 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:55:41,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:55:41,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:55:41,612 INFO L85 PathProgramCache]: Analyzing trace with hash -780559133, now seen corresponding path program 1 times [2025-01-09 11:55:41,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:55:41,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734037515] [2025-01-09 11:55:41,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:55:41,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:55:41,687 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-01-09 11:55:41,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 11:55:41,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:55:41,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:55:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-01-09 11:55:41,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:55:41,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734037515] [2025-01-09 11:55:41,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734037515] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:55:41,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301323285] [2025-01-09 11:55:41,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:55:41,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:55:41,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:55:41,921 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) [2025-01-09 11:55:41,923 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 [2025-01-09 11:55:41,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-01-09 11:55:42,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 11:55:42,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:55:42,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:55:42,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 11:55:42,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:55:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2025-01-09 11:55:42,124 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 11:55:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301323285] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:55:42,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 11:55:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 11:55:42,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44405950] [2025-01-09 11:55:42,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:55:42,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 11:55:42,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:55:42,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 11:55:42,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 11:55:42,146 INFO L87 Difference]: Start difference. First operand has 103 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 67 states have internal predecessors, (96), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-01-09 11:55:42,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:55:42,173 INFO L93 Difference]: Finished difference Result 200 states and 357 transitions. [2025-01-09 11:55:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 11:55:42,174 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 215 [2025-01-09 11:55:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:55:42,178 INFO L225 Difference]: With dead ends: 200 [2025-01-09 11:55:42,180 INFO L226 Difference]: Without dead ends: 100 [2025-01-09 11:55:42,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 11:55:42,186 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 11:55:42,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 11:55:42,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-01-09 11:55:42,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-01-09 11:55:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 64 states have (on average 1.40625) internal successors, (90), 64 states have internal predecessors, (90), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2025-01-09 11:55:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 158 transitions. [2025-01-09 11:55:42,227 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 158 transitions. Word has length 215 [2025-01-09 11:55:42,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:55:42,227 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 158 transitions. [2025-01-09 11:55:42,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2025-01-09 11:55:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 158 transitions. [2025-01-09 11:55:42,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2025-01-09 11:55:42,231 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:55:42,232 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:55:42,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 11:55:42,432 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 [2025-01-09 11:55:42,433 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:55:42,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:55:42,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1453621349, now seen corresponding path program 1 times [2025-01-09 11:55:42,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:55:42,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389457625] [2025-01-09 11:55:42,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:55:42,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:55:42,449 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 215 statements into 1 equivalence classes. [2025-01-09 11:55:42,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 215 of 215 statements. [2025-01-09 11:55:42,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:55:42,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:55:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-01-09 11:55:42,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:55:42,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389457625] [2025-01-09 11:55:42,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389457625] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:55:42,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:55:42,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 11:55:42,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285395272] [2025-01-09 11:55:42,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:55:42,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 11:55:42,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:55:42,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 11:55:42,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 11:55:42,910 INFO L87 Difference]: Start difference. First operand 100 states and 158 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:55:43,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:55:43,096 INFO L93 Difference]: Finished difference Result 295 states and 469 transitions. [2025-01-09 11:55:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 11:55:43,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 215 [2025-01-09 11:55:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:55:43,103 INFO L225 Difference]: With dead ends: 295 [2025-01-09 11:55:43,103 INFO L226 Difference]: Without dead ends: 198 [2025-01-09 11:55:43,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 11:55:43,108 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 121 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 11:55:43,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 458 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 11:55:43,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2025-01-09 11:55:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 179. [2025-01-09 11:55:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 108 states have (on average 1.3796296296296295) internal successors, (149), 108 states have internal predecessors, (149), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2025-01-09 11:55:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 285 transitions. [2025-01-09 11:55:43,148 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 285 transitions. Word has length 215 [2025-01-09 11:55:43,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:55:43,150 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 285 transitions. [2025-01-09 11:55:43,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:55:43,150 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 285 transitions. [2025-01-09 11:55:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2025-01-09 11:55:43,155 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:55:43,155 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:55:43,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 11:55:43,155 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:55:43,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:55:43,156 INFO L85 PathProgramCache]: Analyzing trace with hash -70073828, now seen corresponding path program 1 times [2025-01-09 11:55:43,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:55:43,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492651480] [2025-01-09 11:55:43,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:55:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:55:43,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 216 statements into 1 equivalence classes. [2025-01-09 11:55:43,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 216 of 216 statements. [2025-01-09 11:55:43,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:55:43,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:55:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2025-01-09 11:55:43,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:55:43,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492651480] [2025-01-09 11:55:43,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492651480] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 11:55:43,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 11:55:43,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 11:55:43,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503508605] [2025-01-09 11:55:43,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 11:55:43,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 11:55:43,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:55:43,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 11:55:43,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 11:55:43,536 INFO L87 Difference]: Start difference. First operand 179 states and 285 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:55:43,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:55:43,724 INFO L93 Difference]: Finished difference Result 383 states and 607 transitions. [2025-01-09 11:55:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 11:55:43,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 216 [2025-01-09 11:55:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:55:43,727 INFO L225 Difference]: With dead ends: 383 [2025-01-09 11:55:43,727 INFO L226 Difference]: Without dead ends: 286 [2025-01-09 11:55:43,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 11:55:43,729 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 136 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 11:55:43,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 456 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 11:55:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-01-09 11:55:43,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 274. [2025-01-09 11:55:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 168 states have (on average 1.3869047619047619) internal successors, (233), 168 states have internal predecessors, (233), 102 states have call successors, (102), 3 states have call predecessors, (102), 3 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2025-01-09 11:55:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 437 transitions. [2025-01-09 11:55:43,761 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 437 transitions. Word has length 216 [2025-01-09 11:55:43,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:55:43,762 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 437 transitions. [2025-01-09 11:55:43,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2025-01-09 11:55:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 437 transitions. [2025-01-09 11:55:43,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-01-09 11:55:43,765 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:55:43,765 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:55:43,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 11:55:43,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:55:43,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:55:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1741454572, now seen corresponding path program 1 times [2025-01-09 11:55:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:55:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192590647] [2025-01-09 11:55:43,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:55:43,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:55:43,783 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 11:55:43,907 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 11:55:43,908 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:55:43,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:55:44,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 36 proven. 63 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2025-01-09 11:55:44,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:55:44,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192590647] [2025-01-09 11:55:44,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192590647] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:55:44,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094021934] [2025-01-09 11:55:44,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:55:44,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:55:44,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:55:44,187 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) [2025-01-09 11:55:44,188 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 [2025-01-09 11:55:44,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 11:55:44,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 11:55:44,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:55:44,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:55:44,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 11:55:44,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:55:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1025 proven. 213 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2025-01-09 11:55:44,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:55:44,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 36 proven. 63 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2025-01-09 11:55:44,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094021934] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 11:55:44,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 11:55:44,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 6] total 14 [2025-01-09 11:55:44,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506664828] [2025-01-09 11:55:44,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 11:55:44,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 11:55:44,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:55:44,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 11:55:44,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-01-09 11:55:44,929 INFO L87 Difference]: Start difference. First operand 274 states and 437 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (55), 3 states have call predecessors, (55), 5 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2025-01-09 11:55:45,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:55:45,769 INFO L93 Difference]: Finished difference Result 832 states and 1266 transitions. [2025-01-09 11:55:45,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-01-09 11:55:45,769 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (55), 3 states have call predecessors, (55), 5 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 217 [2025-01-09 11:55:45,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:55:45,773 INFO L225 Difference]: With dead ends: 832 [2025-01-09 11:55:45,773 INFO L226 Difference]: Without dead ends: 640 [2025-01-09 11:55:45,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 430 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=395, Invalid=1011, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 11:55:45,775 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 467 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 11:55:45,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 731 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 11:55:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2025-01-09 11:55:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 476. [2025-01-09 11:55:45,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 287 states have (on average 1.2578397212543555) internal successors, (361), 289 states have internal predecessors, (361), 170 states have call successors, (170), 18 states have call predecessors, (170), 18 states have return successors, (170), 168 states have call predecessors, (170), 170 states have call successors, (170) [2025-01-09 11:55:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 701 transitions. [2025-01-09 11:55:45,820 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 701 transitions. Word has length 217 [2025-01-09 11:55:45,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:55:45,821 INFO L471 AbstractCegarLoop]: Abstraction has 476 states and 701 transitions. [2025-01-09 11:55:45,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 3 states have call successors, (55), 3 states have call predecessors, (55), 5 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2025-01-09 11:55:45,821 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 701 transitions. [2025-01-09 11:55:45,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-01-09 11:55:45,822 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:55:45,823 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:55:45,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 11:55:46,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:55:46,024 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:55:46,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:55:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash -778505362, now seen corresponding path program 1 times [2025-01-09 11:55:46,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:55:46,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175951893] [2025-01-09 11:55:46,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:55:46,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:55:46,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 11:55:46,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 11:55:46,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:55:46,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 11:55:46,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016391155] [2025-01-09 11:55:46,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:55:46,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:55:46,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:55:46,133 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) [2025-01-09 11:55:46,136 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 [2025-01-09 11:55:46,217 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 11:55:46,276 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 11:55:46,276 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:55:46,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:55:46,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 11:55:46,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:55:48,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 353 proven. 261 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2025-01-09 11:55:48,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:55:55,478 WARN L286 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-01-09 11:56:07,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 11:56:07,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175951893] [2025-01-09 11:56:07,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-01-09 11:56:07,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016391155] [2025-01-09 11:56:07,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016391155] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 11:56:07,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-01-09 11:56:07,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2025-01-09 11:56:07,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607018445] [2025-01-09 11:56:07,403 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-01-09 11:56:07,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 11:56:07,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 11:56:07,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 11:56:07,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=593, Unknown=1, NotChecked=0, Total=812 [2025-01-09 11:56:07,405 INFO L87 Difference]: Start difference. First operand 476 states and 701 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 16 states have internal predecessors, (62), 4 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2025-01-09 11:56:08,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 11:56:08,835 INFO L93 Difference]: Finished difference Result 1140 states and 1648 transitions. [2025-01-09 11:56:08,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 11:56:08,836 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 16 states have internal predecessors, (62), 4 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 217 [2025-01-09 11:56:08,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 11:56:08,841 INFO L225 Difference]: With dead ends: 1140 [2025-01-09 11:56:08,843 INFO L226 Difference]: Without dead ends: 741 [2025-01-09 11:56:08,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=480, Invalid=1241, Unknown=1, NotChecked=0, Total=1722 [2025-01-09 11:56:08,845 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 405 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-01-09 11:56:08,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 839 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-01-09 11:56:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2025-01-09 11:56:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 532. [2025-01-09 11:56:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 334 states have (on average 1.2574850299401197) internal successors, (420), 336 states have internal predecessors, (420), 170 states have call successors, (170), 27 states have call predecessors, (170), 27 states have return successors, (170), 168 states have call predecessors, (170), 170 states have call successors, (170) [2025-01-09 11:56:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 760 transitions. [2025-01-09 11:56:08,905 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 760 transitions. Word has length 217 [2025-01-09 11:56:08,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 11:56:08,905 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 760 transitions. [2025-01-09 11:56:08,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 16 states have internal predecessors, (62), 4 states have call successors, (34), 4 states have call predecessors, (34), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2025-01-09 11:56:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 760 transitions. [2025-01-09 11:56:08,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2025-01-09 11:56:08,907 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 11:56:08,907 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 11:56:08,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-01-09 11:56:09,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:56:09,111 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 11:56:09,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 11:56:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1483289134, now seen corresponding path program 1 times [2025-01-09 11:56:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 11:56:09,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294609007] [2025-01-09 11:56:09,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:56:09,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 11:56:09,123 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 11:56:09,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 11:56:09,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:56:09,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-01-09 11:56:09,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1068791701] [2025-01-09 11:56:09,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 11:56:09,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 11:56:09,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 11:56:09,207 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) [2025-01-09 11:56:09,218 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 [2025-01-09 11:56:09,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 217 statements into 1 equivalence classes. [2025-01-09 11:56:09,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 217 of 217 statements. [2025-01-09 11:56:09,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 11:56:09,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 11:56:09,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-09 11:56:09,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 11:56:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 429 proven. 405 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2025-01-09 11:56:11,632 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 11:56:27,149 WARN L286 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2025-01-09 11:56:40,752 WARN L286 SmtUtils]: Spent 7.34s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)