./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-33.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-33.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 113218720f1f4faf2eddef9adf1222c3b46ebe55dc41f5c9bc7cb247cb4bfba6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 23:30:51,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 23:30:51,082 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 23:30:51,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 23:30:51,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 23:30:51,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 23:30:51,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 23:30:51,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 23:30:51,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 23:30:51,120 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 23:30:51,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 23:30:51,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 23:30:51,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 23:30:51,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 23:30:51,122 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 23:30:51,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 23:30:51,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 23:30:51,122 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 23:30:51,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 23:30:51,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 23:30:51,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 23:30:51,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 23:30:51,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 23:30:51,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 23:30:51,123 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 23:30:51,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 23:30:51,123 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 23:30:51,123 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 23:30:51,123 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 23:30:51,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 23:30:51,124 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 23:30:51,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 23:30:51,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:30:51,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 23:30:51,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 23:30:51,125 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 23:30:51,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 23:30:51,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 23:30:51,125 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 23:30:51,125 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 23:30:51,125 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 23:30:51,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 23:30:51,126 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 23:30:51,126 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/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 -> 113218720f1f4faf2eddef9adf1222c3b46ebe55dc41f5c9bc7cb247cb4bfba6 [2025-03-16 23:30:51,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 23:30:51,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 23:30:51,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 23:30:51,394 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 23:30:51,394 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 23:30:51,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-33.i [2025-03-16 23:30:52,627 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544ee2b0c/c150e6c593b149c7bb28492b4617532e/FLAG9185d85cc [2025-03-16 23:30:52,885 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 23:30:52,886 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-33.i [2025-03-16 23:30:52,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544ee2b0c/c150e6c593b149c7bb28492b4617532e/FLAG9185d85cc [2025-03-16 23:30:53,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/544ee2b0c/c150e6c593b149c7bb28492b4617532e [2025-03-16 23:30:53,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 23:30:53,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 23:30:53,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 23:30:53,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 23:30:53,211 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 23:30:53,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139dcbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53, skipping insertion in model container [2025-03-16 23:30:53,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,226 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 23:30:53,337 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-33.i[913,926] [2025-03-16 23:30:53,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:30:53,379 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 23:30:53,387 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_normal_file-33.i[913,926] [2025-03-16 23:30:53,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:30:53,434 INFO L204 MainTranslator]: Completed translation [2025-03-16 23:30:53,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53 WrapperNode [2025-03-16 23:30:53,435 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 23:30:53,436 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 23:30:53,436 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 23:30:53,436 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 23:30:53,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,474 INFO L138 Inliner]: procedures = 26, calls = 31, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 147 [2025-03-16 23:30:53,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 23:30:53,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 23:30:53,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 23:30:53,475 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 23:30:53,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,490 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,502 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]. [2025-03-16 23:30:53,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,508 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,512 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 23:30:53,521 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 23:30:53,523 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 23:30:53,523 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 23:30:53,527 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (1/1) ... [2025-03-16 23:30:53,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:30:53,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:30:53,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 23:30:53,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 23:30:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 23:30:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 23:30:53,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 23:30:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 23:30:53,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 23:30:53,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 23:30:53,631 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 23:30:53,632 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 23:30:53,875 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L112: havoc property_#t~ite15#1;havoc property_#t~bitwise14#1; [2025-03-16 23:30:53,895 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-03-16 23:30:53,895 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 23:30:53,912 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 23:30:53,914 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 23:30:53,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:30:53 BoogieIcfgContainer [2025-03-16 23:30:53,915 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 23:30:53,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 23:30:53,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 23:30:53,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 23:30:53,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 11:30:53" (1/3) ... [2025-03-16 23:30:53,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebd5a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:30:53, skipping insertion in model container [2025-03-16 23:30:53,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:30:53" (2/3) ... [2025-03-16 23:30:53,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebd5a67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:30:53, skipping insertion in model container [2025-03-16 23:30:53,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:30:53" (3/3) ... [2025-03-16 23:30:53,923 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_normal_file-33.i [2025-03-16 23:30:53,935 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 23:30:53,936 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_normal_file-33.i that has 2 procedures, 60 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 23:30:53,975 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 23:30:53,984 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;@7193d185, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 23:30:53,984 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 23:30:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 40 states have internal predecessors, (55), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-16 23:30:53,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 23:30:53,995 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:30:53,996 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:30:53,996 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:30:54,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:30:54,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1899094704, now seen corresponding path program 1 times [2025-03-16 23:30:54,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:30:54,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989696268] [2025-03-16 23:30:54,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:30:54,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:30:54,082 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 23:30:54,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 23:30:54,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:30:54,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:30:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-03-16 23:30:54,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:30:54,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989696268] [2025-03-16 23:30:54,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989696268] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 23:30:54,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909711807] [2025-03-16 23:30:54,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:30:54,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 23:30:54,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:30:54,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 23:30:54,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 23:30:54,316 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 23:30:54,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 23:30:54,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:30:54,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:30:54,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 23:30:54,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 23:30:54,422 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-03-16 23:30:54,422 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 23:30:54,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909711807] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:30:54,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 23:30:54,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-16 23:30:54,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982544375] [2025-03-16 23:30:54,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:30:54,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 23:30:54,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:30:54,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 23:30:54,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:30:54,442 INFO L87 Difference]: Start difference. First operand has 60 states, 39 states have (on average 1.4102564102564104) internal successors, (55), 40 states have internal predecessors, (55), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-16 23:30:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:30:54,469 INFO L93 Difference]: Finished difference Result 117 states and 198 transitions. [2025-03-16 23:30:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 23:30:54,471 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 115 [2025-03-16 23:30:54,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:30:54,478 INFO L225 Difference]: With dead ends: 117 [2025-03-16 23:30:54,478 INFO L226 Difference]: Without dead ends: 58 [2025-03-16 23:30:54,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:30:54,484 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:30:54,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:30:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-03-16 23:30:54,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-03-16 23:30:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-16 23:30:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 86 transitions. [2025-03-16 23:30:54,515 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 86 transitions. Word has length 115 [2025-03-16 23:30:54,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:30:54,515 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 86 transitions. [2025-03-16 23:30:54,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2025-03-16 23:30:54,516 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 86 transitions. [2025-03-16 23:30:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-03-16 23:30:54,519 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:30:54,519 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:30:54,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 23:30:54,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-16 23:30:54,720 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:30:54,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:30:54,721 INFO L85 PathProgramCache]: Analyzing trace with hash -951025968, now seen corresponding path program 1 times [2025-03-16 23:30:54,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:30:54,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608008575] [2025-03-16 23:30:54,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:30:54,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:30:54,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 115 statements into 1 equivalence classes. [2025-03-16 23:30:54,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 115 of 115 statements. [2025-03-16 23:30:54,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:30:54,853 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:30:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-16 23:30:55,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:30:55,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608008575] [2025-03-16 23:30:55,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608008575] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:30:55,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:30:55,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 23:30:55,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61076504] [2025-03-16 23:30:55,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:30:55,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 23:30:55,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:30:55,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 23:30:55,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 23:30:55,393 INFO L87 Difference]: Start difference. First operand 58 states and 86 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-16 23:30:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:30:55,621 INFO L93 Difference]: Finished difference Result 177 states and 264 transitions. [2025-03-16 23:30:55,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 23:30:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 115 [2025-03-16 23:30:55,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:30:55,630 INFO L225 Difference]: With dead ends: 177 [2025-03-16 23:30:55,632 INFO L226 Difference]: Without dead ends: 120 [2025-03-16 23:30:55,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 23:30:55,633 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 64 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 23:30:55,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 198 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 23:30:55,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-03-16 23:30:55,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2025-03-16 23:30:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 67 states have internal predecessors, (87), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-03-16 23:30:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 159 transitions. [2025-03-16 23:30:55,659 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 159 transitions. Word has length 115 [2025-03-16 23:30:55,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:30:55,659 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 159 transitions. [2025-03-16 23:30:55,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-16 23:30:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 159 transitions. [2025-03-16 23:30:55,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-03-16 23:30:55,660 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:30:55,660 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:30:55,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 23:30:55,661 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:30:55,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:30:55,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1971073545, now seen corresponding path program 1 times [2025-03-16 23:30:55,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:30:55,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105583631] [2025-03-16 23:30:55,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:30:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:30:55,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-03-16 23:30:55,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-03-16 23:30:55,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:30:55,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:30:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-16 23:30:55,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:30:55,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105583631] [2025-03-16 23:30:55,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105583631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:30:55,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:30:55,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 23:30:55,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423263332] [2025-03-16 23:30:55,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:30:55,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 23:30:55,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:30:55,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 23:30:55,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 23:30:55,868 INFO L87 Difference]: Start difference. First operand 106 states and 159 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-16 23:30:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:30:56,027 INFO L93 Difference]: Finished difference Result 186 states and 275 transitions. [2025-03-16 23:30:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 23:30:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 116 [2025-03-16 23:30:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:30:56,029 INFO L225 Difference]: With dead ends: 186 [2025-03-16 23:30:56,030 INFO L226 Difference]: Without dead ends: 116 [2025-03-16 23:30:56,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 23:30:56,031 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 61 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 23:30:56,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 203 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 23:30:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-03-16 23:30:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2025-03-16 23:30:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 68 states have internal predecessors, (87), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2025-03-16 23:30:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 159 transitions. [2025-03-16 23:30:56,058 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 159 transitions. Word has length 116 [2025-03-16 23:30:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:30:56,058 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 159 transitions. [2025-03-16 23:30:56,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-16 23:30:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 159 transitions. [2025-03-16 23:30:56,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-16 23:30:56,074 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:30:56,074 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:30:56,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 23:30:56,075 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:30:56,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:30:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1510104893, now seen corresponding path program 1 times [2025-03-16 23:30:56,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:30:56,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235113997] [2025-03-16 23:30:56,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:30:56,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:30:56,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-16 23:30:56,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-16 23:30:56,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:30:56,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:31:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2025-03-16 23:31:01,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:31:01,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235113997] [2025-03-16 23:31:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235113997] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:31:01,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:31:01,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-16 23:31:01,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980160439] [2025-03-16 23:31:01,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:31:01,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-16 23:31:01,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:31:01,726 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-16 23:31:01,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-16 23:31:01,727 INFO L87 Difference]: Start difference. First operand 107 states and 159 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-16 23:31:03,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:31:03,656 INFO L93 Difference]: Finished difference Result 308 states and 439 transitions. [2025-03-16 23:31:03,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-16 23:31:03,657 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 117 [2025-03-16 23:31:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:31:03,659 INFO L225 Difference]: With dead ends: 308 [2025-03-16 23:31:03,659 INFO L226 Difference]: Without dead ends: 251 [2025-03-16 23:31:03,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2025-03-16 23:31:03,661 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 300 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-16 23:31:03,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 593 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-16 23:31:03,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2025-03-16 23:31:03,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 198. [2025-03-16 23:31:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 139 states have (on average 1.3021582733812949) internal successors, (181), 139 states have internal predecessors, (181), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2025-03-16 23:31:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 289 transitions. [2025-03-16 23:31:03,692 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 289 transitions. Word has length 117 [2025-03-16 23:31:03,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:31:03,693 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 289 transitions. [2025-03-16 23:31:03,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2025-03-16 23:31:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 289 transitions. [2025-03-16 23:31:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-16 23:31:03,694 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:31:03,694 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:31:03,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 23:31:03,695 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:31:03,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:31:03,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1706618398, now seen corresponding path program 1 times [2025-03-16 23:31:03,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:31:03,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748093142] [2025-03-16 23:31:03,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:31:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:31:03,704 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-16 23:31:03,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-16 23:31:03,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:31:03,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:31:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 6 proven. 45 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2025-03-16 23:31:07,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:31:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748093142] [2025-03-16 23:31:07,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748093142] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 23:31:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820806292] [2025-03-16 23:31:07,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:31:07,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 23:31:07,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:31:07,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 23:31:07,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 23:31:07,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-03-16 23:31:07,191 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-03-16 23:31:07,191 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:31:07,191 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:31:07,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-03-16 23:31:07,200 INFO L279 TraceCheckSpWp]: Computing forward predicates...