./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-13.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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_operatoramount_amount10_file-13.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 d087495e6d69ce7df2bae3361f922b107889d83ae1996f23275d822283a5c40d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:14:29,769 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:14:29,828 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 15:14:29,831 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:14:29,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:14:29,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:14:29,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:14:29,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:14:29,852 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:14:29,852 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:14:29,853 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:14:29,853 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:14:29,853 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:14:29,853 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:14:29,853 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:14:29,854 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:14:29,854 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:14:29,854 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:14:29,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 15:14:29,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:14:29,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:14:29,854 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:14:29,854 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:14:29,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:14:29,855 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:14:29,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:14:29,855 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:14:29,855 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:14:29,855 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:14:29,855 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:14:29,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:14:29,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:14:29,856 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:14:29,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:14:29,856 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 -> d087495e6d69ce7df2bae3361f922b107889d83ae1996f23275d822283a5c40d [2025-03-08 15:14:30,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:14:30,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:14:30,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:14:30,092 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:14:30,092 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:14:30,093 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-13.i [2025-03-08 15:14:31,174 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7d1a22a/f13c3ab360824493b7a26f862c35ad3f/FLAGae6946753 [2025-03-08 15:14:31,392 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:14:31,396 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-13.i [2025-03-08 15:14:31,406 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7d1a22a/f13c3ab360824493b7a26f862c35ad3f/FLAGae6946753 [2025-03-08 15:14:31,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f7d1a22a/f13c3ab360824493b7a26f862c35ad3f [2025-03-08 15:14:31,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:14:31,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:14:31,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:14:31,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:14:31,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:14:31,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304a1db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31, skipping insertion in model container [2025-03-08 15:14:31,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,448 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:14:31,554 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_operatoramount_amount10_file-13.i[915,928] [2025-03-08 15:14:31,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:14:31,590 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:14:31,598 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_operatoramount_amount10_file-13.i[915,928] [2025-03-08 15:14:31,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:14:31,626 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:14:31,627 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31 WrapperNode [2025-03-08 15:14:31,627 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:14:31,628 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:14:31,628 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:14:31,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:14:31,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,641 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,658 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 97 [2025-03-08 15:14:31,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:14:31,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:14:31,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:14:31,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:14:31,667 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,667 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,681 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]. [2025-03-08 15:14:31,681 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,684 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,685 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,689 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,689 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:14:31,691 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:14:31,692 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:14:31,692 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:14:31,692 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (1/1) ... [2025-03-08 15:14:31,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:14:31,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:14:31,720 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) [2025-03-08 15:14:31,727 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 [2025-03-08 15:14:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:14:31,742 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:14:31,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:14:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 15:14:31,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:14:31,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:14:31,789 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:14:31,790 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:14:31,945 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L69: havoc property_#t~ite12#1;havoc property_#t~bitwise11#1; [2025-03-08 15:14:31,969 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2025-03-08 15:14:31,971 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:14:31,984 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:14:31,985 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:14:31,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:31 BoogieIcfgContainer [2025-03-08 15:14:31,985 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:14:31,986 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:14:31,988 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:14:31,991 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:14:31,991 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:14:31" (1/3) ... [2025-03-08 15:14:31,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6832476d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:14:31, skipping insertion in model container [2025-03-08 15:14:31,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:31" (2/3) ... [2025-03-08 15:14:31,992 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6832476d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:14:31, skipping insertion in model container [2025-03-08 15:14:31,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:31" (3/3) ... [2025-03-08 15:14:31,993 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-13.i [2025-03-08 15:14:32,003 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:14:32,004 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount10_file-13.i that has 2 procedures, 46 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:14:32,037 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:14:32,047 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;@2971a737, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:14:32,047 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:14:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 15:14:32,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-08 15:14:32,058 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:32,058 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:32,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:32,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:32,063 INFO L85 PathProgramCache]: Analyzing trace with hash 160466959, now seen corresponding path program 1 times [2025-03-08 15:14:32,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:14:32,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208060607] [2025-03-08 15:14:32,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:32,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:14:32,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-08 15:14:32,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 15:14:32,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:32,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2025-03-08 15:14:32,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:14:32,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208060607] [2025-03-08 15:14:32,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208060607] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:14:32,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449894088] [2025-03-08 15:14:32,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:32,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:32,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:14:32,223 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) [2025-03-08 15:14:32,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 15:14:32,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-08 15:14:32,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 15:14:32,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:32,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:32,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:14:32,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:14:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2025-03-08 15:14:32,330 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:14:32,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449894088] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:32,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:14:32,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-08 15:14:32,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012397354] [2025-03-08 15:14:32,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:32,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:14:32,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:14:32,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:14:32,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:14:32,349 INFO L87 Difference]: Start difference. First operand has 46 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 15:14:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:32,365 INFO L93 Difference]: Finished difference Result 86 states and 137 transitions. [2025-03-08 15:14:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:14:32,368 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2025-03-08 15:14:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:32,372 INFO L225 Difference]: With dead ends: 86 [2025-03-08 15:14:32,373 INFO L226 Difference]: Without dead ends: 43 [2025-03-08 15:14:32,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:14:32,378 INFO L435 NwaCegarLoop]: 58 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, 58 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 [2025-03-08 15:14:32,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:14:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-03-08 15:14:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-03-08 15:14:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 15:14:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2025-03-08 15:14:32,404 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 78 [2025-03-08 15:14:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:32,404 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 60 transitions. [2025-03-08 15:14:32,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 15:14:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 60 transitions. [2025-03-08 15:14:32,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-08 15:14:32,406 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:32,407 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:32,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 15:14:32,611 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 [2025-03-08 15:14:32,611 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:32,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1580309519, now seen corresponding path program 1 times [2025-03-08 15:14:32,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:14:32,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567140820] [2025-03-08 15:14:32,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:32,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:14:32,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-08 15:14:32,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 15:14:32,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:32,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-08 15:14:32,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:14:32,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567140820] [2025-03-08 15:14:32,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567140820] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 15:14:32,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136811] [2025-03-08 15:14:32,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:32,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:32,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:14:32,862 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) [2025-03-08 15:14:32,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 15:14:32,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-08 15:14:32,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 15:14:32,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:32,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:32,944 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:14:32,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:14:33,001 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:33,002 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:14:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136811] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:33,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:14:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2025-03-08 15:14:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235405032] [2025-03-08 15:14:33,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:33,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:14:33,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:14:33,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:14:33,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:14:33,004 INFO L87 Difference]: Start difference. First operand 43 states and 60 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:33,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:33,027 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2025-03-08 15:14:33,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:14:33,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2025-03-08 15:14:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:33,028 INFO L225 Difference]: With dead ends: 48 [2025-03-08 15:14:33,028 INFO L226 Difference]: Without dead ends: 46 [2025-03-08 15:14:33,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:14:33,029 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:33,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:14:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-08 15:14:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-03-08 15:14:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 15:14:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2025-03-08 15:14:33,035 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 78 [2025-03-08 15:14:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:33,036 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2025-03-08 15:14:33,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2025-03-08 15:14:33,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-03-08 15:14:33,037 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:33,038 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:33,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 15:14:33,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-08 15:14:33,239 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:33,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:33,240 INFO L85 PathProgramCache]: Analyzing trace with hash -792366897, now seen corresponding path program 1 times [2025-03-08 15:14:33,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:14:33,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426024137] [2025-03-08 15:14:33,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:33,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:14:33,248 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 15:14:33,259 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 15:14:33,260 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:33,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:33,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:14:33,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426024137] [2025-03-08 15:14:33,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426024137] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:33,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:14:33,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:14:33,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191065592] [2025-03-08 15:14:33,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:33,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:14:33,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:14:33,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:14:33,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:14:33,304 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:33,333 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2025-03-08 15:14:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:14:33,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 80 [2025-03-08 15:14:33,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:33,336 INFO L225 Difference]: With dead ends: 94 [2025-03-08 15:14:33,336 INFO L226 Difference]: Without dead ends: 51 [2025-03-08 15:14:33,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:14:33,339 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 6 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:33,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 110 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:14:33,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-03-08 15:14:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2025-03-08 15:14:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 15:14:33,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2025-03-08 15:14:33,345 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 80 [2025-03-08 15:14:33,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:33,345 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2025-03-08 15:14:33,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2025-03-08 15:14:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-03-08 15:14:33,346 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:33,346 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:33,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 15:14:33,347 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:33,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:33,347 INFO L85 PathProgramCache]: Analyzing trace with hash 2069756141, now seen corresponding path program 1 times [2025-03-08 15:14:33,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:14:33,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512291601] [2025-03-08 15:14:33,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:33,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:14:33,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-03-08 15:14:33,384 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-03-08 15:14:33,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:33,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:33,931 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:33,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:14:33,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512291601] [2025-03-08 15:14:33,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512291601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:33,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:14:33,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 15:14:33,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171539298] [2025-03-08 15:14:33,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:33,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 15:14:33,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:14:33,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 15:14:33,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 15:14:33,933 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:34,166 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2025-03-08 15:14:34,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 15:14:34,167 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 82 [2025-03-08 15:14:34,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:34,168 INFO L225 Difference]: With dead ends: 78 [2025-03-08 15:14:34,168 INFO L226 Difference]: Without dead ends: 76 [2025-03-08 15:14:34,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2025-03-08 15:14:34,168 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 28 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:34,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 432 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:14:34,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-03-08 15:14:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2025-03-08 15:14:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 54 states have internal predecessors, (64), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-08 15:14:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 92 transitions. [2025-03-08 15:14:34,180 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 92 transitions. Word has length 82 [2025-03-08 15:14:34,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:34,182 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 92 transitions. [2025-03-08 15:14:34,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 92 transitions. [2025-03-08 15:14:34,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 15:14:34,182 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:34,182 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:34,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 15:14:34,183 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:34,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:34,183 INFO L85 PathProgramCache]: Analyzing trace with hash 41995421, now seen corresponding path program 1 times [2025-03-08 15:14:34,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:14:34,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182455790] [2025-03-08 15:14:34,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:34,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:14:34,191 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 15:14:34,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 15:14:34,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:34,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:34,770 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:34,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:14:34,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182455790] [2025-03-08 15:14:34,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182455790] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:34,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:14:34,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 15:14:34,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950601949] [2025-03-08 15:14:34,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:34,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 15:14:34,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:14:34,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 15:14:34,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 15:14:34,773 INFO L87 Difference]: Start difference. First operand 70 states and 92 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:35,099 INFO L93 Difference]: Finished difference Result 103 states and 129 transitions. [2025-03-08 15:14:35,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 15:14:35,102 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2025-03-08 15:14:35,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:35,104 INFO L225 Difference]: With dead ends: 103 [2025-03-08 15:14:35,104 INFO L226 Difference]: Without dead ends: 101 [2025-03-08 15:14:35,104 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-08 15:14:35,104 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 28 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:35,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 479 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:14:35,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-03-08 15:14:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2025-03-08 15:14:35,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 55 states have internal predecessors, (66), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-08 15:14:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2025-03-08 15:14:35,114 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 83 [2025-03-08 15:14:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:35,115 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2025-03-08 15:14:35,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2025-03-08 15:14:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 15:14:35,118 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:35,118 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:35,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 15:14:35,118 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:35,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:35,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1765459042, now seen corresponding path program 1 times [2025-03-08 15:14:35,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:14:35,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647088814] [2025-03-08 15:14:35,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:35,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:14:35,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 15:14:35,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 15:14:35,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:35,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:35,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:14:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647088814] [2025-03-08 15:14:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647088814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:35,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:14:35,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 15:14:35,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106569722] [2025-03-08 15:14:35,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:35,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 15:14:35,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:14:35,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 15:14:35,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 15:14:35,510 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:35,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:35,672 INFO L93 Difference]: Finished difference Result 105 states and 135 transitions. [2025-03-08 15:14:35,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 15:14:35,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2025-03-08 15:14:35,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:35,674 INFO L225 Difference]: With dead ends: 105 [2025-03-08 15:14:35,676 INFO L226 Difference]: Without dead ends: 103 [2025-03-08 15:14:35,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:14:35,676 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 32 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:35,677 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 424 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:14:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2025-03-08 15:14:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2025-03-08 15:14:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 70 states have (on average 1.2) internal successors, (84), 72 states have internal predecessors, (84), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 18 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-08 15:14:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2025-03-08 15:14:35,693 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 83 [2025-03-08 15:14:35,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:35,694 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2025-03-08 15:14:35,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2025-03-08 15:14:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 15:14:35,696 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:35,696 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:35,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 15:14:35,696 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:35,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash 110530101, now seen corresponding path program 1 times [2025-03-08 15:14:35,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:14:35,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289029320] [2025-03-08 15:14:35,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:35,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:14:35,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 15:14:35,706 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 15:14:35,706 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:35,706 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:35,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:14:35,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289029320] [2025-03-08 15:14:35,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289029320] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:35,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:14:35,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:14:35,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020538060] [2025-03-08 15:14:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:35,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:14:35,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:14:35,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:14:35,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:14:35,733 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:35,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:35,773 INFO L93 Difference]: Finished difference Result 219 states and 286 transitions. [2025-03-08 15:14:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:14:35,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2025-03-08 15:14:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:35,775 INFO L225 Difference]: With dead ends: 219 [2025-03-08 15:14:35,775 INFO L226 Difference]: Without dead ends: 128 [2025-03-08 15:14:35,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:14:35,777 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 26 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:35,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 117 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:14:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-03-08 15:14:35,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2025-03-08 15:14:35,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.1555555555555554) internal successors, (104), 94 states have internal predecessors, (104), 28 states have call successors, (28), 5 states have call predecessors, (28), 5 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-08 15:14:35,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 160 transitions. [2025-03-08 15:14:35,796 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 160 transitions. Word has length 83 [2025-03-08 15:14:35,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:35,797 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 160 transitions. [2025-03-08 15:14:35,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:35,797 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 160 transitions. [2025-03-08 15:14:35,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-03-08 15:14:35,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:35,798 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:35,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 15:14:35,798 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:35,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:35,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1283709370, now seen corresponding path program 1 times [2025-03-08 15:14:35,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:14:35,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20661418] [2025-03-08 15:14:35,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:35,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:14:35,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 15:14:35,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 15:14:35,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:35,811 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:35,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 15:14:35,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20661418] [2025-03-08 15:14:35,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20661418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:35,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:14:35,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 15:14:35,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833274947] [2025-03-08 15:14:35,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:35,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 15:14:35,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 15:14:35,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 15:14:35,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:14:35,840 INFO L87 Difference]: Start difference. First operand 124 states and 160 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:35,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:35,867 INFO L93 Difference]: Finished difference Result 257 states and 328 transitions. [2025-03-08 15:14:35,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 15:14:35,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 83 [2025-03-08 15:14:35,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:35,869 INFO L225 Difference]: With dead ends: 257 [2025-03-08 15:14:35,869 INFO L226 Difference]: Without dead ends: 136 [2025-03-08 15:14:35,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 15:14:35,870 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 29 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:35,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 104 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:14:35,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-08 15:14:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2025-03-08 15:14:35,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 85 states have (on average 1.1294117647058823) internal successors, (96), 88 states have internal predecessors, (96), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-08 15:14:35,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 148 transitions. [2025-03-08 15:14:35,885 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 148 transitions. Word has length 83 [2025-03-08 15:14:35,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:35,885 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 148 transitions. [2025-03-08 15:14:35,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 148 transitions. [2025-03-08 15:14:35,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-08 15:14:35,886 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:35,887 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:35,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 15:14:35,887 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:35,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash -767685636, now seen corresponding path program 1 times [2025-03-08 15:14:35,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 15:14:35,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493046589] [2025-03-08 15:14:35,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:35,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 15:14:35,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-08 15:14:35,913 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-08 15:14:35,913 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:35,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 15:14:35,913 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 15:14:35,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-08 15:14:35,933 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-08 15:14:35,933 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:35,933 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 15:14:35,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 15:14:35,954 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 15:14:35,954 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 15:14:35,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 15:14:35,959 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:35,996 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 15:14:35,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 03:14:35 BoogieIcfgContainer [2025-03-08 15:14:36,000 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 15:14:36,001 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 15:14:36,001 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 15:14:36,001 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 15:14:36,002 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:31" (3/4) ... [2025-03-08 15:14:36,003 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-08 15:14:36,004 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 15:14:36,005 INFO L158 Benchmark]: Toolchain (without parser) took 4575.80ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 122.8MB in the beginning and 125.9MB in the end (delta: -3.1MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2025-03-08 15:14:36,005 INFO L158 Benchmark]: CDTParser took 1.08ms. Allocated memory is still 201.3MB. Free memory is still 119.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 15:14:36,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.92ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 110.9MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 15:14:36,006 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.35ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 109.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 15:14:36,006 INFO L158 Benchmark]: Boogie Preprocessor took 32.15ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 108.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 15:14:36,006 INFO L158 Benchmark]: IcfgBuilder took 293.62ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 93.3MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 15:14:36,007 INFO L158 Benchmark]: TraceAbstraction took 4014.33ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 92.9MB in the beginning and 125.9MB in the end (delta: -33.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 15:14:36,007 INFO L158 Benchmark]: Witness Printer took 2.99ms. Allocated memory is still 201.3MB. Free memory was 125.9MB in the beginning and 125.9MB in the end (delta: 50.8kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 15:14:36,008 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08ms. Allocated memory is still 201.3MB. Free memory is still 119.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.92ms. Allocated memory is still 167.8MB. Free memory was 122.4MB in the beginning and 110.9MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.35ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 109.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.15ms. Allocated memory is still 167.8MB. Free memory was 109.2MB in the beginning and 108.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 293.62ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 93.3MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4014.33ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 92.9MB in the beginning and 125.9MB in the end (delta: -33.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.99ms. Allocated memory is still 201.3MB. Free memory was 125.9MB in the beginning and 125.9MB in the end (delta: 50.8kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of shiftRight at line 69, overapproximation of shiftRight at line 35. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] unsigned char var_1_2 = 1; [L24] unsigned short int var_1_3 = 256; [L25] signed long int var_1_4 = 500; [L26] signed char var_1_5 = 16; [L27] unsigned char var_1_6 = 1; [L28] unsigned char var_1_7 = 1; VAL [isInitial=0, var_1_1=1, var_1_2=1, var_1_3=256, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L73] isInitial = 1 [L74] FCALL initially() [L75] COND TRUE 1 [L76] FCALL updateLastVariables() [L77] CALL updateVariables() [L47] var_1_2 = __VERIFIER_nondet_uchar() [L48] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_3=256, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_3=256, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L48] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_1=1, var_1_3=256, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L49] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_3=256, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_3=256, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L49] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_3=256, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L50] var_1_3 = __VERIFIER_nondet_ushort() [L51] CALL assume_abort_if_not(var_1_3 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L51] RET assume_abort_if_not(var_1_3 >= 0) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L52] CALL assume_abort_if_not(var_1_3 <= 65535) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L52] RET assume_abort_if_not(var_1_3 <= 65535) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=500, var_1_5=16, var_1_6=1, var_1_7=1] [L53] var_1_4 = __VERIFIER_nondet_long() [L54] CALL assume_abort_if_not(var_1_4 >= -2147483648) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=16, var_1_6=1, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=16, var_1_6=1, var_1_7=1] [L54] RET assume_abort_if_not(var_1_4 >= -2147483648) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=16, var_1_6=1, var_1_7=1] [L55] CALL assume_abort_if_not(var_1_4 <= 2147483647) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=16, var_1_6=1, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=16, var_1_6=1, var_1_7=1] [L55] RET assume_abort_if_not(var_1_4 <= 2147483647) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=16, var_1_6=1, var_1_7=1] [L56] var_1_5 = __VERIFIER_nondet_char() [L57] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=1] [L57] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=1] [L58] CALL assume_abort_if_not(var_1_5 <= 32) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=1] [L58] RET assume_abort_if_not(var_1_5 <= 32) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=1] [L59] var_1_6 = __VERIFIER_nondet_uchar() [L60] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_7=1] [L60] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_7=1] [L61] CALL assume_abort_if_not(var_1_6 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=1] [L61] RET assume_abort_if_not(var_1_6 <= 1) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=1] [L62] var_1_7 = __VERIFIER_nondet_uchar() [L63] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1] [L63] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1] [L64] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L64] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, var_1_1=1, var_1_2=1, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L77] RET updateVariables() [L78] CALL step() [L32] signed long int stepLocal_1 = ~ var_1_3; [L33] unsigned char stepLocal_0 = var_1_7; VAL [isInitial=1, stepLocal_0=-255, stepLocal_1=-1, var_1_1=1, var_1_2=1, var_1_3=0, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L34] COND TRUE \read(var_1_2) VAL [isInitial=1, stepLocal_0=-255, stepLocal_1=-1, var_1_1=1, var_1_2=1, var_1_3=0, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L35] EXPR var_1_4 >> var_1_5 VAL [isInitial=1, stepLocal_0=-255, stepLocal_1=-1, var_1_1=1, var_1_2=1, var_1_3=0, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L35] COND FALSE !(stepLocal_1 != (var_1_4 >> var_1_5)) [L42] var_1_1 = var_1_5 VAL [isInitial=1, stepLocal_0=-255, var_1_1=32, var_1_2=1, var_1_3=0, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L78] RET step() [L79] CALL, EXPR property() [L69] EXPR var_1_2 ? (((~ var_1_3) != (var_1_4 >> var_1_5)) ? ((var_1_6 || var_1_7) ? (var_1_1 == ((unsigned char) (64 + var_1_5))) : (var_1_1 == ((unsigned char) var_1_5))) : (var_1_1 == ((unsigned char) var_1_5))) : 1 VAL [isInitial=1, var_1_1=32, var_1_2=1, var_1_3=0, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L69] EXPR var_1_4 >> var_1_5 VAL [isInitial=1, var_1_1=32, var_1_2=1, var_1_3=0, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L69] EXPR var_1_2 ? (((~ var_1_3) != (var_1_4 >> var_1_5)) ? ((var_1_6 || var_1_7) ? (var_1_1 == ((unsigned char) (64 + var_1_5))) : (var_1_1 == ((unsigned char) var_1_5))) : (var_1_1 == ((unsigned char) var_1_5))) : 1 VAL [isInitial=1, var_1_1=32, var_1_2=1, var_1_3=0, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L69-L70] return var_1_2 ? (((~ var_1_3) != (var_1_4 >> var_1_5)) ? ((var_1_6 || var_1_7) ? (var_1_1 == ((unsigned char) (64 + var_1_5))) : (var_1_1 == ((unsigned char) var_1_5))) : (var_1_1 == ((unsigned char) var_1_5))) : 1 ; [L79] RET, EXPR property() [L79] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, var_1_1=32, var_1_2=1, var_1_3=0, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] [L19] reach_error() VAL [isInitial=1, var_1_1=32, var_1_2=1, var_1_3=0, var_1_4=1, var_1_5=32, var_1_6=1, var_1_7=-255] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 46 locations, 77 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 9, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 1938 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1418 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 621 IncrementalHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 520 mSDtfsCounter, 621 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=7, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 70 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 890 NumberOfCodeBlocks, 890 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 796 ConstructedInterpolants, 0 QuantifiedInterpolants, 1464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 2585/2640 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-08 15:14:36,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_operatoramount_amount10_file-13.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 d087495e6d69ce7df2bae3361f922b107889d83ae1996f23275d822283a5c40d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 15:14:37,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 15:14:37,991 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-08 15:14:37,997 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 15:14:37,998 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 15:14:38,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 15:14:38,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 15:14:38,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 15:14:38,023 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 15:14:38,023 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 15:14:38,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 15:14:38,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 15:14:38,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 15:14:38,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 15:14:38,025 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 15:14:38,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 15:14:38,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 15:14:38,025 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 15:14:38,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 15:14:38,026 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 15:14:38,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:14:38,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 15:14:38,027 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 15:14:38,027 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 -> d087495e6d69ce7df2bae3361f922b107889d83ae1996f23275d822283a5c40d [2025-03-08 15:14:38,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 15:14:38,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 15:14:38,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 15:14:38,294 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 15:14:38,296 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 15:14:38,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-13.i [2025-03-08 15:14:39,531 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c555333ad/0b9ed25514b94b9cb9bc9e3810b41482/FLAG1c8f5ff91 [2025-03-08 15:14:39,696 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 15:14:39,696 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-13.i [2025-03-08 15:14:39,702 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c555333ad/0b9ed25514b94b9cb9bc9e3810b41482/FLAG1c8f5ff91 [2025-03-08 15:14:39,720 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c555333ad/0b9ed25514b94b9cb9bc9e3810b41482 [2025-03-08 15:14:39,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 15:14:39,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 15:14:39,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 15:14:39,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 15:14:39,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 15:14:39,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b5c461 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39, skipping insertion in model container [2025-03-08 15:14:39,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,743 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 15:14:39,853 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_operatoramount_amount10_file-13.i[915,928] [2025-03-08 15:14:39,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:14:39,895 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 15:14:39,903 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_operatoramount_amount10_file-13.i[915,928] [2025-03-08 15:14:39,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 15:14:39,932 INFO L204 MainTranslator]: Completed translation [2025-03-08 15:14:39,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39 WrapperNode [2025-03-08 15:14:39,934 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 15:14:39,935 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 15:14:39,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 15:14:39,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 15:14:39,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,960 INFO L138 Inliner]: procedures = 27, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76 [2025-03-08 15:14:39,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 15:14:39,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 15:14:39,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 15:14:39,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 15:14:39,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,972 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,988 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]. [2025-03-08 15:14:39,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,997 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:39,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:40,003 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:40,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:40,005 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 15:14:40,005 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 15:14:40,006 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 15:14:40,006 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 15:14:40,006 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (1/1) ... [2025-03-08 15:14:40,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 15:14:40,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:14:40,031 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) [2025-03-08 15:14:40,034 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 [2025-03-08 15:14:40,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 15:14:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-08 15:14:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-08 15:14:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-08 15:14:40,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 15:14:40,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 15:14:40,110 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 15:14:40,111 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 15:14:40,272 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-08 15:14:40,272 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 15:14:40,284 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 15:14:40,284 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 15:14:40,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:40 BoogieIcfgContainer [2025-03-08 15:14:40,285 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 15:14:40,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 15:14:40,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 15:14:40,291 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 15:14:40,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 03:14:39" (1/3) ... [2025-03-08 15:14:40,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d077883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:14:40, skipping insertion in model container [2025-03-08 15:14:40,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 03:14:39" (2/3) ... [2025-03-08 15:14:40,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d077883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 03:14:40, skipping insertion in model container [2025-03-08 15:14:40,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:40" (3/3) ... [2025-03-08 15:14:40,294 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-13.i [2025-03-08 15:14:40,306 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 15:14:40,325 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount10_file-13.i that has 2 procedures, 39 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-08 15:14:40,364 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 15:14:40,373 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;@1265477c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 15:14:40,373 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 15:14:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 15:14:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-08 15:14:40,384 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:40,385 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:40,386 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:40,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1771680014, now seen corresponding path program 1 times [2025-03-08 15:14:40,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 15:14:40,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984303738] [2025-03-08 15:14:40,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:40,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:40,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:14:40,404 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) [2025-03-08 15:14:40,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 15:14:40,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-08 15:14:40,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-08 15:14:40,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:40,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:40,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-08 15:14:40,512 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:14:40,546 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2025-03-08 15:14:40,546 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:14:40,547 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 15:14:40,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984303738] [2025-03-08 15:14:40,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984303738] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:40,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:14:40,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 15:14:40,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327206579] [2025-03-08 15:14:40,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:40,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 15:14:40,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 15:14:40,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 15:14:40,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:14:40,569 INFO L87 Difference]: Start difference. First operand has 39 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 15:14:40,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:40,583 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2025-03-08 15:14:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 15:14:40,584 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2025-03-08 15:14:40,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:40,588 INFO L225 Difference]: With dead ends: 72 [2025-03-08 15:14:40,589 INFO L226 Difference]: Without dead ends: 36 [2025-03-08 15:14:40,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 15:14:40,593 INFO L435 NwaCegarLoop]: 50 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, 50 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 [2025-03-08 15:14:40,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:14:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-08 15:14:40,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-03-08 15:14:40,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 15:14:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 50 transitions. [2025-03-08 15:14:40,619 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 50 transitions. Word has length 76 [2025-03-08 15:14:40,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:40,619 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 50 transitions. [2025-03-08 15:14:40,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 15:14:40,619 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 50 transitions. [2025-03-08 15:14:40,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-08 15:14:40,621 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:40,621 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:40,628 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 15:14:40,822 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 [2025-03-08 15:14:40,822 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:40,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash 138175218, now seen corresponding path program 1 times [2025-03-08 15:14:40,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 15:14:40,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813276980] [2025-03-08 15:14:40,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:40,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:40,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:14:40,826 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) [2025-03-08 15:14:40,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 15:14:40,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-08 15:14:40,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-08 15:14:40,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:40,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:40,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 15:14:40,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:14:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:41,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 15:14:41,605 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 15:14:41,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813276980] [2025-03-08 15:14:41,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813276980] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 15:14:41,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 15:14:41,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 15:14:41,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549573226] [2025-03-08 15:14:41,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:41,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 15:14:41,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 15:14:41,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 15:14:41,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 15:14:41,607 INFO L87 Difference]: Start difference. First operand 36 states and 50 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:41,656 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2025-03-08 15:14:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 15:14:41,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 76 [2025-03-08 15:14:41,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:41,658 INFO L225 Difference]: With dead ends: 44 [2025-03-08 15:14:41,659 INFO L226 Difference]: Without dead ends: 42 [2025-03-08 15:14:41,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-03-08 15:14:41,660 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 5 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:41,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 188 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 15:14:41,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-03-08 15:14:41,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2025-03-08 15:14:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-08 15:14:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2025-03-08 15:14:41,668 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 76 [2025-03-08 15:14:41,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:41,671 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2025-03-08 15:14:41,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2025-03-08 15:14:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2025-03-08 15:14:41,673 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:41,673 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:41,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 15:14:41,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:41,875 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:41,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:41,876 INFO L85 PathProgramCache]: Analyzing trace with hash -37332585, now seen corresponding path program 1 times [2025-03-08 15:14:41,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 15:14:41,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [142970345] [2025-03-08 15:14:41,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:41,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:41,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:14:41,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:14:41,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 15:14:41,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 77 statements into 1 equivalence classes. [2025-03-08 15:14:41,931 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 77 of 77 statements. [2025-03-08 15:14:41,931 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:41,931 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:41,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-08 15:14:41,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:14:42,227 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-08 15:14:42,227 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:14:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:42,513 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 15:14:42,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142970345] [2025-03-08 15:14:42,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142970345] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 15:14:42,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:14:42,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2025-03-08 15:14:42,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114713520] [2025-03-08 15:14:42,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:42,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 15:14:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 15:14:42,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 15:14:42,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-08 15:14:42,515 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:42,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:42,654 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2025-03-08 15:14:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 15:14:42,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2025-03-08 15:14:42,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:42,656 INFO L225 Difference]: With dead ends: 54 [2025-03-08 15:14:42,656 INFO L226 Difference]: Without dead ends: 52 [2025-03-08 15:14:42,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-08 15:14:42,656 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 14 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:42,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 245 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:14:42,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-08 15:14:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2025-03-08 15:14:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-08 15:14:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2025-03-08 15:14:42,667 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 77 [2025-03-08 15:14:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:42,667 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2025-03-08 15:14:42,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:42,667 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2025-03-08 15:14:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-08 15:14:42,668 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:42,668 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:42,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 15:14:42,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:42,869 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:42,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:42,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1127695922, now seen corresponding path program 1 times [2025-03-08 15:14:42,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 15:14:42,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266304740] [2025-03-08 15:14:42,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:42,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:42,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:14:42,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:14:42,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 15:14:42,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-08 15:14:42,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 15:14:42,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:42,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:42,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-08 15:14:42,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:14:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-08 15:14:43,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:14:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:43,575 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 15:14:43,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266304740] [2025-03-08 15:14:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266304740] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 15:14:43,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:14:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2025-03-08 15:14:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788853891] [2025-03-08 15:14:43,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:43,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:14:43,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 15:14:43,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:14:43,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2025-03-08 15:14:43,578 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:43,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:43,900 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2025-03-08 15:14:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 15:14:43,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2025-03-08 15:14:43,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:43,902 INFO L225 Difference]: With dead ends: 71 [2025-03-08 15:14:43,902 INFO L226 Difference]: Without dead ends: 69 [2025-03-08 15:14:43,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2025-03-08 15:14:43,903 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 22 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:43,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 253 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 15:14:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-03-08 15:14:43,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2025-03-08 15:14:43,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-08 15:14:43,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2025-03-08 15:14:43,916 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 78 [2025-03-08 15:14:43,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:43,917 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2025-03-08 15:14:43,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:43,917 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2025-03-08 15:14:43,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-08 15:14:43,919 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 15:14:43,919 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 15:14:43,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 15:14:44,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:44,120 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 15:14:44,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 15:14:44,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1126772401, now seen corresponding path program 1 times [2025-03-08 15:14:44,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-08 15:14:44,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553887504] [2025-03-08 15:14:44,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 15:14:44,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:44,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 15:14:44,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 15:14:44,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 15:14:44,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 78 statements into 1 equivalence classes. [2025-03-08 15:14:44,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 78 of 78 statements. [2025-03-08 15:14:44,161 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 15:14:44,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 15:14:44,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 15:14:44,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 15:14:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-03-08 15:14:44,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 15:14:44,560 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2025-03-08 15:14:44,560 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-08 15:14:44,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553887504] [2025-03-08 15:14:44,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553887504] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-08 15:14:44,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 15:14:44,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2025-03-08 15:14:44,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115609655] [2025-03-08 15:14:44,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 15:14:44,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 15:14:44,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-08 15:14:44,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 15:14:44,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2025-03-08 15:14:44,562 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:44,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 15:14:44,845 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2025-03-08 15:14:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 15:14:44,848 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 78 [2025-03-08 15:14:44,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 15:14:44,849 INFO L225 Difference]: With dead ends: 62 [2025-03-08 15:14:44,849 INFO L226 Difference]: Without dead ends: 0 [2025-03-08 15:14:44,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-03-08 15:14:44,850 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 17 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 15:14:44,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 252 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 15:14:44,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-08 15:14:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-08 15:14:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 15:14:44,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-08 15:14:44,850 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2025-03-08 15:14:44,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 15:14:44,850 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-08 15:14:44,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2025-03-08 15:14:44,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-08 15:14:44,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-08 15:14:44,855 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-08 15:14:44,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 15:14:45,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 15:14:45,059 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-08 15:14:45,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-08 15:14:45,147 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 15:14:45,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 03:14:45 BoogieIcfgContainer [2025-03-08 15:14:45,155 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 15:14:45,156 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 15:14:45,156 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 15:14:45,156 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 15:14:45,156 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 03:14:40" (3/4) ... [2025-03-08 15:14:45,158 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-08 15:14:45,161 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-08 15:14:45,166 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-03-08 15:14:45,166 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2025-03-08 15:14:45,166 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-08 15:14:45,166 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-08 15:14:45,224 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 15:14:45,224 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 15:14:45,224 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 15:14:45,225 INFO L158 Benchmark]: Toolchain (without parser) took 5501.08ms. Allocated memory was 83.9MB in the beginning and 218.1MB in the end (delta: 134.2MB). Free memory was 57.1MB in the beginning and 134.6MB in the end (delta: -77.5MB). Peak memory consumption was 55.4MB. Max. memory is 16.1GB. [2025-03-08 15:14:45,225 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 54.5MB in the beginning and 54.5MB in the end (delta: 18.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 15:14:45,225 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.95ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 44.9MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 15:14:45,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.85ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 43.5MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 15:14:45,226 INFO L158 Benchmark]: Boogie Preprocessor took 41.62ms. Allocated memory is still 83.9MB. Free memory was 43.5MB in the beginning and 42.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 15:14:45,226 INFO L158 Benchmark]: IcfgBuilder took 279.59ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 29.2MB in the end (delta: 12.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 15:14:45,226 INFO L158 Benchmark]: TraceAbstraction took 4868.41ms. Allocated memory was 83.9MB in the beginning and 218.1MB in the end (delta: 134.2MB). Free memory was 28.5MB in the beginning and 142.8MB in the end (delta: -114.3MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2025-03-08 15:14:45,226 INFO L158 Benchmark]: Witness Printer took 68.88ms. Allocated memory is still 218.1MB. Free memory was 142.8MB in the beginning and 134.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 15:14:45,227 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory was 54.5MB in the beginning and 54.5MB in the end (delta: 18.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.95ms. Allocated memory is still 83.9MB. Free memory was 57.1MB in the beginning and 44.9MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.85ms. Allocated memory is still 83.9MB. Free memory was 44.9MB in the beginning and 43.5MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.62ms. Allocated memory is still 83.9MB. Free memory was 43.5MB in the beginning and 42.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 279.59ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 29.2MB in the end (delta: 12.6MB). There was no memory consumed. Max. memory is 16.1GB. * TraceAbstraction took 4868.41ms. Allocated memory was 83.9MB in the beginning and 218.1MB in the end (delta: 134.2MB). Free memory was 28.5MB in the beginning and 142.8MB in the end (delta: -114.3MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Witness Printer took 68.88ms. Allocated memory is still 218.1MB. Free memory was 142.8MB in the beginning and 134.6MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 39 locations, 67 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 988 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 721 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 267 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 621 GetRequests, 573 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=3, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 385 NumberOfCodeBlocks, 385 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 610 ConstructedInterpolants, 6 QuantifiedInterpolants, 1085 SizeOfPredicates, 38 NumberOfNonLiveVariables, 624 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 2058/2112 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-08 15:14:45,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE