./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-37.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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_loopvsstraightlinecode_25-while_file-37.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 e6a9f19f8bc91cee98eed829e929613a36691a9c36f04847231bf1631581216f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 23:19:48,570 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 23:19:48,631 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 23:19:48,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 23:19:48,639 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 23:19:48,662 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 23:19:48,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 23:19:48,664 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 23:19:48,664 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 23:19:48,665 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 23:19:48,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 23:19:48,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 23:19:48,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 23:19:48,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 23:19:48,666 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 23:19:48,666 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 23:19:48,666 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 23:19:48,666 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 23:19:48,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 23:19:48,667 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 23:19:48,667 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 23:19:48,668 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 23:19:48,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:19:48,668 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 23:19:48,668 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 23:19:48,668 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 23:19:48,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 23:19:48,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 23:19:48,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 23:19:48,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 23:19:48,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 23:19:48,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 23:19:48,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 23:19:48,669 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 -> e6a9f19f8bc91cee98eed829e929613a36691a9c36f04847231bf1631581216f [2025-03-03 23:19:48,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 23:19:48,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 23:19:48,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 23:19:48,914 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 23:19:48,914 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 23:19:48,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-37.i [2025-03-03 23:19:50,061 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c316b4d8c/07a6f5a0dd654513a55c9aac574847ef/FLAGb2532900a [2025-03-03 23:19:50,297 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 23:19:50,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-37.i [2025-03-03 23:19:50,314 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c316b4d8c/07a6f5a0dd654513a55c9aac574847ef/FLAGb2532900a [2025-03-03 23:19:50,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c316b4d8c/07a6f5a0dd654513a55c9aac574847ef [2025-03-03 23:19:50,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 23:19:50,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 23:19:50,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 23:19:50,654 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 23:19:50,659 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 23:19:50,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb21166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50, skipping insertion in model container [2025-03-03 23:19:50,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,678 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 23:19:50,793 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_loopvsstraightlinecode_25-while_file-37.i[915,928] [2025-03-03 23:19:50,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:19:50,845 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 23:19:50,853 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_loopvsstraightlinecode_25-while_file-37.i[915,928] [2025-03-03 23:19:50,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:19:50,876 INFO L204 MainTranslator]: Completed translation [2025-03-03 23:19:50,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50 WrapperNode [2025-03-03 23:19:50,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 23:19:50,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 23:19:50,878 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 23:19:50,878 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 23:19:50,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,913 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 105 [2025-03-03 23:19:50,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 23:19:50,914 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 23:19:50,914 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 23:19:50,914 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 23:19:50,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,936 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]. [2025-03-03 23:19:50,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,941 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,944 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,945 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 23:19:50,946 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 23:19:50,946 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 23:19:50,946 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 23:19:50,947 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (1/1) ... [2025-03-03 23:19:50,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:19:50,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:19:50,976 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) [2025-03-03 23:19:50,980 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 [2025-03-03 23:19:50,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 23:19:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 23:19:50,995 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 23:19:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 23:19:50,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 23:19:50,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 23:19:51,047 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 23:19:51,048 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 23:19:51,278 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L81: havoc property_#t~bitwise10#1; [2025-03-03 23:19:51,295 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-03 23:19:51,295 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 23:19:51,315 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 23:19:51,315 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 23:19:51,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:19:51 BoogieIcfgContainer [2025-03-03 23:19:51,316 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 23:19:51,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 23:19:51,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 23:19:51,321 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 23:19:51,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:19:50" (1/3) ... [2025-03-03 23:19:51,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec9778c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:19:51, skipping insertion in model container [2025-03-03 23:19:51,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:50" (2/3) ... [2025-03-03 23:19:51,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec9778c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:19:51, skipping insertion in model container [2025-03-03 23:19:51,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:19:51" (3/3) ... [2025-03-03 23:19:51,323 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-37.i [2025-03-03 23:19:51,334 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 23:19:51,335 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-37.i that has 2 procedures, 49 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 23:19:51,378 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 23:19:51,390 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;@4e96166d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 23:19:51,391 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 23:19:51,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-03 23:19:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 23:19:51,401 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:19:51,401 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:19:51,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:19:51,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:19:51,405 INFO L85 PathProgramCache]: Analyzing trace with hash -513797095, now seen corresponding path program 1 times [2025-03-03 23:19:51,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:19:51,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607138158] [2025-03-03 23:19:51,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:51,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:19:51,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 23:19:51,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 23:19:51,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:51,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:19:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-03-03 23:19:51,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:19:51,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607138158] [2025-03-03 23:19:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607138158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:19:51,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:19:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 23:19:51,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875762269] [2025-03-03 23:19:51,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:19:51,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 23:19:51,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:19:51,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 23:19:51,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 23:19:51,874 INFO L87 Difference]: Start difference. First operand has 49 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 38 states have internal predecessors, (52), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:19:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:19:51,921 INFO L93 Difference]: Finished difference Result 92 states and 144 transitions. [2025-03-03 23:19:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 23:19:51,923 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 68 [2025-03-03 23:19:51,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:19:51,946 INFO L225 Difference]: With dead ends: 92 [2025-03-03 23:19:51,947 INFO L226 Difference]: Without dead ends: 46 [2025-03-03 23:19:51,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 23:19:51,953 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 23:19:51,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 23:19:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-03 23:19:51,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-03-03 23:19:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 35 states have internal predecessors, (46), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-03 23:19:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2025-03-03 23:19:51,978 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 68 [2025-03-03 23:19:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:19:51,978 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2025-03-03 23:19:51,979 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:19:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2025-03-03 23:19:51,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-03 23:19:51,983 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:19:51,983 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:19:51,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 23:19:51,983 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:19:51,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:19:51,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1229013240, now seen corresponding path program 1 times [2025-03-03 23:19:51,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:19:51,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234628593] [2025-03-03 23:19:51,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:51,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:19:51,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 23:19:52,030 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 23:19:52,031 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:52,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:19:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-03 23:19:52,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:19:52,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234628593] [2025-03-03 23:19:52,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234628593] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:19:52,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596389759] [2025-03-03 23:19:52,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:52,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:19:52,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:19:52,217 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) [2025-03-03 23:19:52,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 23:19:52,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-03 23:19:52,298 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-03 23:19:52,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:52,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:19:52,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 23:19:52,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:19:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-03 23:19:52,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 23:19:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-03 23:19:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596389759] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 23:19:52,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 23:19:52,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-03-03 23:19:52,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527188736] [2025-03-03 23:19:52,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 23:19:52,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 23:19:52,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:19:52,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 23:19:52,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-03 23:19:52,668 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2025-03-03 23:19:52,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:19:52,827 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2025-03-03 23:19:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 23:19:52,831 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 68 [2025-03-03 23:19:52,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:19:52,832 INFO L225 Difference]: With dead ends: 95 [2025-03-03 23:19:52,832 INFO L226 Difference]: Without dead ends: 52 [2025-03-03 23:19:52,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2025-03-03 23:19:52,833 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 35 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 23:19:52,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 99 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 23:19:52,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-03 23:19:52,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2025-03-03 23:19:52,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-03 23:19:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2025-03-03 23:19:52,842 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 68 [2025-03-03 23:19:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:19:52,842 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2025-03-03 23:19:52,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2025-03-03 23:19:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2025-03-03 23:19:52,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-03 23:19:52,845 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:19:52,845 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:19:52,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 23:19:53,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:19:53,049 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:19:53,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:19:53,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1202918374, now seen corresponding path program 1 times [2025-03-03 23:19:53,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:19:53,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096899310] [2025-03-03 23:19:53,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:53,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:19:53,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 23:19:53,102 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 23:19:53,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:53,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:19:53,241 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-03 23:19:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:19:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096899310] [2025-03-03 23:19:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096899310] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:19:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233007531] [2025-03-03 23:19:53,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:53,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:19:53,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:19:53,245 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) [2025-03-03 23:19:53,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 23:19:53,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-03 23:19:53,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-03 23:19:53,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:53,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:19:53,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-03 23:19:53,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:19:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-03-03 23:19:53,467 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:19:53,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233007531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:19:53,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 23:19:53,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2025-03-03 23:19:53,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041453156] [2025-03-03 23:19:53,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:19:53,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 23:19:53,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:19:53,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 23:19:53,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-03 23:19:53,469 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:19:53,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:19:53,612 INFO L93 Difference]: Finished difference Result 164 states and 214 transitions. [2025-03-03 23:19:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 23:19:53,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 70 [2025-03-03 23:19:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:19:53,614 INFO L225 Difference]: With dead ends: 164 [2025-03-03 23:19:53,614 INFO L226 Difference]: Without dead ends: 117 [2025-03-03 23:19:53,621 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-03-03 23:19:53,622 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 65 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 23:19:53,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 212 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 23:19:53,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-03-03 23:19:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2025-03-03 23:19:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-03 23:19:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 115 transitions. [2025-03-03 23:19:53,637 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 115 transitions. Word has length 70 [2025-03-03 23:19:53,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:19:53,637 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 115 transitions. [2025-03-03 23:19:53,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:19:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 115 transitions. [2025-03-03 23:19:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 23:19:53,638 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:19:53,638 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:19:53,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 23:19:53,838 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,SelfDestructingSolverStorable2 [2025-03-03 23:19:53,839 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:19:53,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:19:53,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1267705859, now seen corresponding path program 1 times [2025-03-03 23:19:53,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:19:53,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180319804] [2025-03-03 23:19:53,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:53,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:19:53,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-03 23:19:53,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 23:19:53,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:53,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 23:19:53,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488367563] [2025-03-03 23:19:53,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:53,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:19:53,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:19:53,897 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) [2025-03-03 23:19:53,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 23:19:53,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-03 23:19:53,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 23:19:53,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:53,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:19:53,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-03 23:19:53,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:19:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-03-03 23:19:54,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:19:54,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 23:19:54,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180319804] [2025-03-03 23:19:54,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 23:19:54,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488367563] [2025-03-03 23:19:54,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488367563] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:19:54,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:19:54,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 23:19:54,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629068868] [2025-03-03 23:19:54,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:19:54,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 23:19:54,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 23:19:54,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 23:19:54,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 23:19:54,188 INFO L87 Difference]: Start difference. First operand 88 states and 115 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:19:54,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:19:54,280 INFO L93 Difference]: Finished difference Result 156 states and 204 transitions. [2025-03-03 23:19:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 23:19:54,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 71 [2025-03-03 23:19:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:19:54,282 INFO L225 Difference]: With dead ends: 156 [2025-03-03 23:19:54,283 INFO L226 Difference]: Without dead ends: 98 [2025-03-03 23:19:54,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-03 23:19:54,284 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 37 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 23:19:54,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 146 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 23:19:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-03-03 23:19:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 90. [2025-03-03 23:19:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 67 states have internal predecessors, (80), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-03 23:19:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2025-03-03 23:19:54,297 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 71 [2025-03-03 23:19:54,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:19:54,298 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2025-03-03 23:19:54,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:19:54,298 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2025-03-03 23:19:54,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-03-03 23:19:54,301 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:19:54,301 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:19:54,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-03 23:19:54,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:19:54,505 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:19:54,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:19:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash -249236785, now seen corresponding path program 1 times [2025-03-03 23:19:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 23:19:54,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320788984] [2025-03-03 23:19:54,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:54,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 23:19:54,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-03 23:19:54,554 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-03 23:19:54,555 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:54,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 23:19:54,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6450812] [2025-03-03 23:19:54,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:54,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:19:54,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:19:54,558 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) [2025-03-03 23:19:54,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 23:19:54,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-03 23:19:54,670 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-03 23:19:54,670 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:54,670 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 23:19:54,670 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-03 23:19:54,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-03 23:19:54,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-03 23:19:54,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:54,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-03 23:19:54,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-03 23:19:54,729 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-03 23:19:54,730 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 23:19:54,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-03 23:19:54,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 23:19:54,936 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-03 23:19:54,983 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 23:19:54,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 11:19:54 BoogieIcfgContainer [2025-03-03 23:19:54,985 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 23:19:54,986 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 23:19:54,986 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 23:19:54,986 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 23:19:54,987 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:19:51" (3/4) ... [2025-03-03 23:19:54,989 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-03 23:19:54,989 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 23:19:54,990 INFO L158 Benchmark]: Toolchain (without parser) took 4337.26ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 130.9MB in the end (delta: -8.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 23:19:54,990 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 23:19:54,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.72ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 109.8MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 23:19:54,990 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.35ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 106.2MB in the end (delta: 3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 23:19:54,990 INFO L158 Benchmark]: Boogie Preprocessor took 31.48ms. Allocated memory is still 167.8MB. Free memory was 106.2MB in the beginning and 102.5MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 23:19:54,991 INFO L158 Benchmark]: IcfgBuilder took 369.66ms. Allocated memory is still 167.8MB. Free memory was 102.5MB in the beginning and 80.3MB in the end (delta: 22.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-03 23:19:54,991 INFO L158 Benchmark]: TraceAbstraction took 3668.34ms. Allocated memory is still 167.8MB. Free memory was 80.3MB in the beginning and 130.9MB in the end (delta: -50.6MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2025-03-03 23:19:54,991 INFO L158 Benchmark]: Witness Printer took 3.31ms. Allocated memory is still 167.8MB. Free memory was 130.9MB in the beginning and 130.9MB in the end (delta: 33.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 23:19:54,993 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.72ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 109.8MB in the end (delta: 12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.35ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 106.2MB in the end (delta: 3.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.48ms. Allocated memory is still 167.8MB. Free memory was 106.2MB in the beginning and 102.5MB in the end (delta: 3.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 369.66ms. Allocated memory is still 167.8MB. Free memory was 102.5MB in the beginning and 80.3MB in the end (delta: 22.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3668.34ms. Allocated memory is still 167.8MB. Free memory was 80.3MB in the beginning and 130.9MB in the end (delta: -50.6MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * Witness Printer took 3.31ms. Allocated memory is still 167.8MB. Free memory was 130.9MB in the beginning and 130.9MB in the end (delta: 33.1kB). There was no memory consumed. 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 bitwiseOr at line 37, overapproximation of bitwiseOr at line 81, overapproximation of someBinaryDOUBLEComparisonOperation at line 74, overapproximation of someBinaryDOUBLEComparisonOperation at line 81. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 8; [L23] unsigned short int var_1_2 = 59049; [L24] unsigned char var_1_6 = 4; [L25] unsigned char var_1_7 = 1; [L26] unsigned char var_1_8 = 64; [L27] unsigned long int var_1_9 = 64; [L28] unsigned long int var_1_10 = 1776833134; [L29] signed long int var_1_11 = -16; [L30] double var_1_12 = 0.25; [L31] double var_1_13 = 5.5; [L32] unsigned char last_1_var_1_8 = 64; [L33] signed long int last_1_var_1_11 = -16; VAL [isInitial=0, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=59049, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L85] isInitial = 1 [L86] FCALL initially() [L87] COND TRUE 1 [L88] CALL updateLastVariables() [L77] last_1_var_1_8 = var_1_8 [L78] last_1_var_1_11 = var_1_11 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=59049, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L88] RET updateLastVariables() [L89] CALL updateVariables() [L61] var_1_2 = __VERIFIER_nondet_ushort() [L62] CALL assume_abort_if_not(var_1_2 >= 32767) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L62] RET assume_abort_if_not(var_1_2 >= 32767) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L63] CALL assume_abort_if_not(var_1_2 <= 65535) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L63] RET assume_abort_if_not(var_1_2 <= 65535) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=4, var_1_7=1, var_1_8=64, var_1_9=64] [L64] var_1_6 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_7=1, var_1_8=64, var_1_9=64] [L65] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_7=1, var_1_8=64, var_1_9=64] [L66] CALL assume_abort_if_not(var_1_6 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L66] RET assume_abort_if_not(var_1_6 <= 254) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L67] var_1_7 = __VERIFIER_nondet_uchar() [L68] CALL assume_abort_if_not(var_1_7 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_8=64, var_1_9=64] [L68] RET assume_abort_if_not(var_1_7 >= 0) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_8=64, var_1_9=64] [L69] CALL assume_abort_if_not(var_1_7 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L69] RET assume_abort_if_not(var_1_7 <= 1) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=1776833134, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L70] var_1_10 = __VERIFIER_nondet_ulong() [L71] CALL assume_abort_if_not(var_1_10 >= 1073741824) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L71] RET assume_abort_if_not(var_1_10 >= 1073741824) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L72] CALL assume_abort_if_not(var_1_10 <= 2147483647) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L72] RET assume_abort_if_not(var_1_10 <= 2147483647) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_13=11/2, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L73] var_1_13 = __VERIFIER_nondet_double() [L74] CALL assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L20] COND FALSE !(!cond) VAL [\old(cond)=1, isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L74] RET assume_abort_if_not((var_1_13 >= -922337.2036854765600e+13F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L89] RET updateVariables() [L90] CALL step() [L37] EXPR (var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=8, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L37] COND TRUE ((var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11)) <= -64 [L38] var_1_1 = ((((1) < (((((16) > (var_1_6)) ? (16) : (var_1_6))))) ? (1) : (((((16) > (var_1_6)) ? (16) : (var_1_6)))))) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=-16, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L44] var_1_11 = var_1_1 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=64, var_1_9=64] [L45] COND TRUE var_1_1 >= ((((var_1_11 / var_1_2) < 0 ) ? -(var_1_11 / var_1_2) : (var_1_11 / var_1_2))) [L46] var_1_8 = var_1_6 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=2, var_1_9=64] [L52] unsigned char stepLocal_0 = var_1_1; VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, stepLocal_0=1, var_1_10=-3221225472, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=2, var_1_9=64] [L53] COND FALSE !(var_1_1 > stepLocal_0) [L56] var_1_9 = ((1228227409u + var_1_10) - var_1_11) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=1/4, var_1_1=1, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=2, var_1_9=-1992998064] [L58] var_1_12 = var_1_13 VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=2, var_1_9=-1992998064] [L90] RET step() [L91] CALL, EXPR property() [L81] EXPR (var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=2, var_1_9=-1992998064] [L81-L82] return (((((((var_1_2 - last_1_var_1_8) ^ (last_1_var_1_8 * last_1_var_1_11)) <= -64) ? (var_1_1 == ((unsigned char) ((((1) < (((((16) > (var_1_6)) ? (16) : (var_1_6))))) ? (1) : (((((16) > (var_1_6)) ? (16) : (var_1_6)))))))) : (var_1_7 ? (var_1_1 == ((unsigned char) var_1_6)) : 1)) && ((var_1_1 >= ((((var_1_11 / var_1_2) < 0 ) ? -(var_1_11 / var_1_2) : (var_1_11 / var_1_2)))) ? (var_1_8 == ((unsigned char) var_1_6)) : (var_1_7 ? (var_1_8 == ((unsigned char) var_1_6)) : 1))) && ((var_1_1 > var_1_1) ? (var_1_9 == ((unsigned long int) var_1_2)) : (var_1_9 == ((unsigned long int) ((1228227409u + var_1_10) - var_1_11))))) && (var_1_11 == ((signed long int) var_1_1))) && (var_1_12 == ((double) var_1_13)) ; [L91] RET, EXPR property() [L91] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=2, var_1_9=-1992998064] [L19] reach_error() VAL [isInitial=1, last_1_var_1_11=-16, last_1_var_1_8=64, var_1_10=-3221225472, var_1_11=1, var_1_12=2, var_1_13=2, var_1_1=1, var_1_2=32767, var_1_6=2, var_1_7=1, var_1_8=2, var_1_9=-1992998064] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 9, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 137 mSDsluCounter, 569 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 361 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 251 IncrementalHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 208 mSDtfsCounter, 251 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90occurred in iteration=4, InterpolantAutomatonStates: 22, 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, 4 MinimizatonAttempts, 39 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 634 NumberOfCodeBlocks, 634 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 476 ConstructedInterpolants, 0 QuantifiedInterpolants, 1740 SizeOfPredicates, 9 NumberOfNonLiveVariables, 539 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 912/1008 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 [2025-03-03 23:19:55,006 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 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_loopvsstraightlinecode_25-while_file-37.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 e6a9f19f8bc91cee98eed829e929613a36691a9c36f04847231bf1631581216f --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 23:19:56,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 23:19:56,894 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-03-03 23:19:56,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 23:19:56,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 23:19:56,918 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 23:19:56,920 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 23:19:56,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 23:19:56,921 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 23:19:56,921 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 23:19:56,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 23:19:56,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 23:19:56,921 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 23:19:56,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 23:19:56,922 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 23:19:56,922 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 23:19:56,922 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 23:19:56,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 23:19:56,924 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 23:19:56,924 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 23:19:56,924 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 23:19:56,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 23:19:56,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 23:19:56,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 23:19:56,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:19:56,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 23:19:56,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 23:19:56,925 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 23:19:56,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 23:19:56,925 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-03 23:19:56,925 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-03 23:19:56,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 23:19:56,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 23:19:56,925 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 23:19:56,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 23:19:56,925 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 -> e6a9f19f8bc91cee98eed829e929613a36691a9c36f04847231bf1631581216f [2025-03-03 23:19:57,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 23:19:57,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 23:19:57,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 23:19:57,194 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 23:19:57,194 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 23:19:57,196 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-37.i [2025-03-03 23:19:58,383 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9269c7a0c/ebdd1162e8b249feb8fe4678c8a1c28c/FLAG838c0c24f [2025-03-03 23:19:58,590 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 23:19:58,591 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-37.i [2025-03-03 23:19:58,596 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9269c7a0c/ebdd1162e8b249feb8fe4678c8a1c28c/FLAG838c0c24f [2025-03-03 23:19:58,950 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9269c7a0c/ebdd1162e8b249feb8fe4678c8a1c28c [2025-03-03 23:19:58,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 23:19:58,952 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 23:19:58,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 23:19:58,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 23:19:58,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 23:19:58,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:19:58" (1/1) ... [2025-03-03 23:19:58,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b356991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:58, skipping insertion in model container [2025-03-03 23:19:58,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 11:19:58" (1/1) ... [2025-03-03 23:19:58,967 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 23:19:59,064 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_loopvsstraightlinecode_25-while_file-37.i[915,928] [2025-03-03 23:19:59,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:19:59,110 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 23:19:59,121 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_loopvsstraightlinecode_25-while_file-37.i[915,928] [2025-03-03 23:19:59,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 23:19:59,145 INFO L204 MainTranslator]: Completed translation [2025-03-03 23:19:59,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59 WrapperNode [2025-03-03 23:19:59,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 23:19:59,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 23:19:59,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 23:19:59,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 23:19:59,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,164 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,181 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 83 [2025-03-03 23:19:59,184 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 23:19:59,184 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 23:19:59,185 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 23:19:59,185 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 23:19:59,190 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,207 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]. [2025-03-03 23:19:59,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,217 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,218 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,219 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,220 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 23:19:59,221 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 23:19:59,221 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 23:19:59,221 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 23:19:59,222 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (1/1) ... [2025-03-03 23:19:59,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 23:19:59,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 23:19:59,247 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) [2025-03-03 23:19:59,250 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 [2025-03-03 23:19:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 23:19:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-03-03 23:19:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 23:19:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 23:19:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 23:19:59,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 23:19:59,328 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 23:19:59,330 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 23:19:59,524 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-03 23:19:59,524 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 23:19:59,530 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 23:19:59,530 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 23:19:59,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:19:59 BoogieIcfgContainer [2025-03-03 23:19:59,531 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 23:19:59,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 23:19:59,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 23:19:59,536 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 23:19:59,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 11:19:58" (1/3) ... [2025-03-03 23:19:59,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6845e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:19:59, skipping insertion in model container [2025-03-03 23:19:59,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 11:19:59" (2/3) ... [2025-03-03 23:19:59,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f6845e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 11:19:59, skipping insertion in model container [2025-03-03 23:19:59,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 11:19:59" (3/3) ... [2025-03-03 23:19:59,537 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-37.i [2025-03-03 23:19:59,547 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 23:19:59,548 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-37.i that has 2 procedures, 40 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 23:19:59,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 23:19:59,602 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;@3588f552, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 23:19:59,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 23:19:59,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-03 23:19:59,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-03 23:19:59,610 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:19:59,610 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:19:59,611 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:19:59,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:19:59,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1255718620, now seen corresponding path program 1 times [2025-03-03 23:19:59,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 23:19:59,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840270290] [2025-03-03 23:19:59,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:19:59,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:19:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 23:19:59,623 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-03 23:19:59,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2025-03-03 23:19:59,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-03 23:19:59,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-03 23:19:59,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:19:59,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:19:59,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 23:19:59,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:19:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-03 23:19:59,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:19:59,779 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 23:19:59,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840270290] [2025-03-03 23:19:59,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840270290] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:19:59,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:19:59,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-03 23:19:59,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546251769] [2025-03-03 23:19:59,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:19:59,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 23:19:59,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 23:19:59,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 23:19:59,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 23:19:59,813 INFO L87 Difference]: Start difference. First operand has 40 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 29 states have internal predecessors, (37), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 23:19:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:19:59,829 INFO L93 Difference]: Finished difference Result 74 states and 114 transitions. [2025-03-03 23:19:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 23:19:59,830 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2025-03-03 23:19:59,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:19:59,834 INFO L225 Difference]: With dead ends: 74 [2025-03-03 23:19:59,834 INFO L226 Difference]: Without dead ends: 37 [2025-03-03 23:19:59,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 23:19:59,838 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 [2025-03-03 23:19:59,838 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] [2025-03-03 23:19:59,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-03 23:19:59,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-03-03 23:19:59,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-03 23:19:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 50 transitions. [2025-03-03 23:19:59,862 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 50 transitions. Word has length 65 [2025-03-03 23:19:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:19:59,862 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 50 transitions. [2025-03-03 23:19:59,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2025-03-03 23:19:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 50 transitions. [2025-03-03 23:19:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-03 23:19:59,865 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:19:59,865 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:19:59,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2025-03-03 23:20:00,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:20:00,067 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:20:00,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:20:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash 587616963, now seen corresponding path program 1 times [2025-03-03 23:20:00,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 23:20:00,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846060734] [2025-03-03 23:20:00,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:20:00,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:20:00,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 23:20:00,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-03 23:20:00,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2025-03-03 23:20:00,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-03 23:20:00,156 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-03 23:20:00,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:20:00,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:20:00,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-03 23:20:00,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:20:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2025-03-03 23:20:00,196 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:20:00,196 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 23:20:00,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846060734] [2025-03-03 23:20:00,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846060734] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:20:00,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:20:00,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 23:20:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114155991] [2025-03-03 23:20:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:20:00,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 23:20:00,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 23:20:00,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 23:20:00,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 23:20:00,197 INFO L87 Difference]: Start difference. First operand 37 states and 50 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:20:00,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:20:00,259 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2025-03-03 23:20:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 23:20:00,264 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2025-03-03 23:20:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:20:00,265 INFO L225 Difference]: With dead ends: 71 [2025-03-03 23:20:00,265 INFO L226 Difference]: Without dead ends: 37 [2025-03-03 23:20:00,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 23:20:00,266 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 23:20:00,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 23:20:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-03-03 23:20:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-03-03 23:20:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-03 23:20:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2025-03-03 23:20:00,273 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 65 [2025-03-03 23:20:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:20:00,276 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2025-03-03 23:20:00,276 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, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:20:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2025-03-03 23:20:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-03 23:20:00,278 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:20:00,278 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:20:00,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2025-03-03 23:20:00,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:20:00,479 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:20:00,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:20:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 616246114, now seen corresponding path program 1 times [2025-03-03 23:20:00,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 23:20:00,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266680655] [2025-03-03 23:20:00,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:20:00,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:20:00,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 23:20:00,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-03 23:20:00,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2025-03-03 23:20:00,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-03 23:20:00,571 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-03 23:20:00,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:20:00,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:20:00,574 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 23:20:00,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:20:19,018 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-03 23:20:19,019 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:20:19,019 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 23:20:19,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266680655] [2025-03-03 23:20:19,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266680655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:20:19,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 23:20:19,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-03 23:20:19,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51876529] [2025-03-03 23:20:19,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:20:19,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 23:20:19,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 23:20:19,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 23:20:19,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-03 23:20:19,020 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:20:20,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:20:20,191 INFO L93 Difference]: Finished difference Result 87 states and 112 transitions. [2025-03-03 23:20:20,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-03 23:20:20,192 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 65 [2025-03-03 23:20:20,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:20:20,193 INFO L225 Difference]: With dead ends: 87 [2025-03-03 23:20:20,193 INFO L226 Difference]: Without dead ends: 53 [2025-03-03 23:20:20,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2025-03-03 23:20:20,194 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 68 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 23:20:20,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 146 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 23:20:20,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-03-03 23:20:20,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2025-03-03 23:20:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2025-03-03 23:20:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2025-03-03 23:20:20,199 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 65 [2025-03-03 23:20:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:20:20,199 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2025-03-03 23:20:20,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:20:20,199 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2025-03-03 23:20:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 23:20:20,200 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:20:20,200 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:20:20,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2025-03-03 23:20:20,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:20:20,401 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:20:20,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:20:20,401 INFO L85 PathProgramCache]: Analyzing trace with hash 188553383, now seen corresponding path program 1 times [2025-03-03 23:20:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 23:20:20,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472850498] [2025-03-03 23:20:20,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:20:20,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:20:20,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 23:20:20,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-03 23:20:20,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2025-03-03 23:20:20,428 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 23:20:20,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 23:20:20,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:20:20,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:20:20,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 23:20:20,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:20:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-03 23:20:20,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 23:20:21,027 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 23:20:21,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472850498] [2025-03-03 23:20:21,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472850498] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:20:21,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [171257837] [2025-03-03 23:20:21,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:20:21,027 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-03 23:20:21,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-03 23:20:21,030 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-03 23:20:21,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2025-03-03 23:20:21,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 23:20:21,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 23:20:21,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:20:21,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:20:21,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-03 23:20:21,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:20:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-03 23:20:37,160 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:20:37,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [171257837] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:20:37,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 23:20:37,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 16 [2025-03-03 23:20:37,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112297888] [2025-03-03 23:20:37,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:20:37,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-03 23:20:37,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 23:20:37,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-03 23:20:37,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2025-03-03 23:20:37,161 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:20:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:20:44,845 INFO L93 Difference]: Finished difference Result 167 states and 203 transitions. [2025-03-03 23:20:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-03 23:20:44,850 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2025-03-03 23:20:44,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:20:44,853 INFO L225 Difference]: With dead ends: 167 [2025-03-03 23:20:44,853 INFO L226 Difference]: Without dead ends: 121 [2025-03-03 23:20:44,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=189, Invalid=681, Unknown=0, NotChecked=0, Total=870 [2025-03-03 23:20:44,854 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 95 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2025-03-03 23:20:44,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 290 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2025-03-03 23:20:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-03-03 23:20:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 78. [2025-03-03 23:20:44,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-03 23:20:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2025-03-03 23:20:44,866 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 66 [2025-03-03 23:20:44,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:20:44,867 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2025-03-03 23:20:44,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 15 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:20:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2025-03-03 23:20:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 23:20:44,868 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:20:44,868 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:20:44,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2025-03-03 23:20:45,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2025-03-03 23:20:45,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-03 23:20:45,269 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:20:45,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:20:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash -7960122, now seen corresponding path program 1 times [2025-03-03 23:20:45,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 23:20:45,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541169614] [2025-03-03 23:20:45,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:20:45,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:20:45,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 23:20:45,271 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-03 23:20:45,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2025-03-03 23:20:45,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 23:20:45,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 23:20:45,335 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:20:45,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:20:45,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 23:20:45,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:20:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-03 23:20:45,594 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 23:20:45,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 23:20:45,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541169614] [2025-03-03 23:20:45,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541169614] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:20:45,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1178625420] [2025-03-03 23:20:45,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:20:45,847 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-03 23:20:45,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-03 23:20:45,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-03 23:20:45,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2025-03-03 23:20:45,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 23:20:46,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 23:20:46,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:20:46,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:20:46,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-03 23:20:46,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:21:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-03-03 23:21:00,451 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 23:21:00,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1178625420] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 23:21:00,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 23:21:00,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 19 [2025-03-03 23:21:00,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969121954] [2025-03-03 23:21:00,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 23:21:00,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-03 23:21:00,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-03 23:21:00,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-03 23:21:00,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2025-03-03 23:21:00,453 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:21:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 23:21:05,989 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2025-03-03 23:21:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-03 23:21:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 66 [2025-03-03 23:21:05,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 23:21:05,991 INFO L225 Difference]: With dead ends: 136 [2025-03-03 23:21:05,991 INFO L226 Difference]: Without dead ends: 90 [2025-03-03 23:21:05,992 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2025-03-03 23:21:05,992 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 41 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-03-03 23:21:05,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 244 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-03-03 23:21:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-03-03 23:21:06,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 78. [2025-03-03 23:21:06,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2025-03-03 23:21:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2025-03-03 23:21:06,005 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 66 [2025-03-03 23:21:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 23:21:06,006 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2025-03-03 23:21:06,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8) internal successors, (27), 14 states have internal predecessors, (27), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2025-03-03 23:21:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2025-03-03 23:21:06,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-03 23:21:06,008 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 23:21:06,008 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 23:21:06,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2025-03-03 23:21:06,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2025-03-03 23:21:06,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-03-03 23:21:06,409 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 23:21:06,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 23:21:06,409 INFO L85 PathProgramCache]: Analyzing trace with hash 559191903, now seen corresponding path program 1 times [2025-03-03 23:21:06,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-03 23:21:06,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046208354] [2025-03-03 23:21:06,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:21:06,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2025-03-03 23:21:06,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2025-03-03 23:21:06,412 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2025-03-03 23:21:06,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2025-03-03 23:21:06,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 23:21:06,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 23:21:06,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:21:06,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:21:06,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 23:21:06,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 23:21:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-03-03 23:21:06,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 23:21:06,965 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-03 23:21:06,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046208354] [2025-03-03 23:21:06,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046208354] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 23:21:06,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2037776790] [2025-03-03 23:21:06,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 23:21:06,965 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-03-03 23:21:06,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2025-03-03 23:21:06,967 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-03-03 23:21:06,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2025-03-03 23:21:06,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-03 23:21:07,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-03 23:21:07,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 23:21:07,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 23:21:07,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-03 23:21:07,404 INFO L279 TraceCheckSpWp]: Computing forward predicates...