./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-87.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-87.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 cb30ea211631a90f1626c3e6fb2e0b40ba29ee0043f014276df2ad6c029e454c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 02:59:23,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 02:59:23,921 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 02:59:23,927 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 02:59:23,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 02:59:23,946 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 02:59:23,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 02:59:23,947 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 02:59:23,947 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 02:59:23,947 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 02:59:23,947 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 02:59:23,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 02:59:23,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 02:59:23,948 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 02:59:23,948 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 02:59:23,948 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 02:59:23,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 02:59:23,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 02:59:23,949 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 -> cb30ea211631a90f1626c3e6fb2e0b40ba29ee0043f014276df2ad6c029e454c [2025-03-17 02:59:24,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 02:59:24,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 02:59:24,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 02:59:24,184 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 02:59:24,184 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 02:59:24,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-87.i [2025-03-17 02:59:25,369 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fab25494/4e73a3b9b704450a984463dfeb673042/FLAG7a0aa8256 [2025-03-17 02:59:25,588 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 02:59:25,588 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-87.i [2025-03-17 02:59:25,596 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fab25494/4e73a3b9b704450a984463dfeb673042/FLAG7a0aa8256 [2025-03-17 02:59:25,940 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fab25494/4e73a3b9b704450a984463dfeb673042 [2025-03-17 02:59:25,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 02:59:25,943 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 02:59:25,944 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 02:59:25,944 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 02:59:25,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 02:59:25,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:59:25" (1/1) ... [2025-03-17 02:59:25,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b556a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:25, skipping insertion in model container [2025-03-17 02:59:25,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 02:59:25" (1/1) ... [2025-03-17 02:59:25,960 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 02:59:26,056 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_floatingpointinfluence_no-floats_file-87.i[916,929] [2025-03-17 02:59:26,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 02:59:26,094 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 02:59:26,103 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_floatingpointinfluence_no-floats_file-87.i[916,929] [2025-03-17 02:59:26,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 02:59:26,136 INFO L204 MainTranslator]: Completed translation [2025-03-17 02:59:26,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26 WrapperNode [2025-03-17 02:59:26,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 02:59:26,138 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 02:59:26,138 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 02:59:26,138 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 02:59:26,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,165 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2025-03-17 02:59:26,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 02:59:26,166 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 02:59:26,169 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 02:59:26,170 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 02:59:26,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,183 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,201 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]. [2025-03-17 02:59:26,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,202 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,205 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,210 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 02:59:26,213 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 02:59:26,216 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 02:59:26,216 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 02:59:26,217 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (1/1) ... [2025-03-17 02:59:26,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 02:59:26,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 02:59:26,245 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) [2025-03-17 02:59:26,250 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 [2025-03-17 02:59:26,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 02:59:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 02:59:26,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 02:59:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 02:59:26,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 02:59:26,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 02:59:26,323 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 02:59:26,325 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 02:59:26,540 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-03-17 02:59:26,540 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 02:59:26,548 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 02:59:26,551 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 02:59:26,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:59:26 BoogieIcfgContainer [2025-03-17 02:59:26,551 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 02:59:26,556 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 02:59:26,556 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 02:59:26,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 02:59:26,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 02:59:25" (1/3) ... [2025-03-17 02:59:26,560 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b822e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:59:26, skipping insertion in model container [2025-03-17 02:59:26,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 02:59:26" (2/3) ... [2025-03-17 02:59:26,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b822e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 02:59:26, skipping insertion in model container [2025-03-17 02:59:26,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 02:59:26" (3/3) ... [2025-03-17 02:59:26,562 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-87.i [2025-03-17 02:59:26,574 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 02:59:26,576 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_floatingpointinfluence_no-floats_file-87.i that has 2 procedures, 40 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 02:59:26,624 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 02:59:26,634 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;@4731e400, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 02:59:26,636 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 02:59:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 02:59:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 02:59:26,646 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:59:26,647 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:59:26,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:59:26,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:59:26,651 INFO L85 PathProgramCache]: Analyzing trace with hash 790636075, now seen corresponding path program 1 times [2025-03-17 02:59:26,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:59:26,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101489611] [2025-03-17 02:59:26,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:59:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:59:26,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 02:59:26,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 02:59:26,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:59:26,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:59:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2025-03-17 02:59:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:59:26,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101489611] [2025-03-17 02:59:26,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101489611] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 02:59:26,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492775687] [2025-03-17 02:59:26,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:59:26,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 02:59:26,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 02:59:26,880 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) [2025-03-17 02:59:26,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 02:59:26,946 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 02:59:26,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 02:59:26,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:59:26,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:59:26,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 02:59:27,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 02:59:27,018 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2025-03-17 02:59:27,018 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 02:59:27,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492775687] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:59:27,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 02:59:27,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 02:59:27,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129348028] [2025-03-17 02:59:27,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:59:27,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 02:59:27,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:59:27,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 02:59:27,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 02:59:27,037 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.391304347826087) internal successors, (32), 24 states have internal predecessors, (32), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-17 02:59:27,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:59:27,051 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2025-03-17 02:59:27,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 02:59:27,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2025-03-17 02:59:27,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:59:27,055 INFO L225 Difference]: With dead ends: 77 [2025-03-17 02:59:27,055 INFO L226 Difference]: Without dead ends: 38 [2025-03-17 02:59:27,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 02:59:27,059 INFO L435 NwaCegarLoop]: 56 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, 56 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 [2025-03-17 02:59:27,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 02:59:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-17 02:59:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-03-17 02:59:27,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 02:59:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 56 transitions. [2025-03-17 02:59:27,085 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 56 transitions. Word has length 86 [2025-03-17 02:59:27,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:59:27,085 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 56 transitions. [2025-03-17 02:59:27,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-17 02:59:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 56 transitions. [2025-03-17 02:59:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 02:59:27,087 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:59:27,087 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:59:27,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 02:59:27,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 02:59:27,291 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:59:27,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:59:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1287576885, now seen corresponding path program 1 times [2025-03-17 02:59:27,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:59:27,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451658333] [2025-03-17 02:59:27,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:59:27,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:59:27,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 02:59:27,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 02:59:27,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:59:27,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 02:59:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-17 02:59:30,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 02:59:30,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451658333] [2025-03-17 02:59:30,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451658333] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 02:59:30,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 02:59:30,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 02:59:30,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784176951] [2025-03-17 02:59:30,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 02:59:30,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 02:59:30,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 02:59:30,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 02:59:30,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-03-17 02:59:30,540 INFO L87 Difference]: Start difference. First operand 38 states and 56 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-17 02:59:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 02:59:31,285 INFO L93 Difference]: Finished difference Result 80 states and 111 transitions. [2025-03-17 02:59:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 02:59:31,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 86 [2025-03-17 02:59:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 02:59:31,287 INFO L225 Difference]: With dead ends: 80 [2025-03-17 02:59:31,287 INFO L226 Difference]: Without dead ends: 78 [2025-03-17 02:59:31,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2025-03-17 02:59:31,288 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 73 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 02:59:31,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 211 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 02:59:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-03-17 02:59:31,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2025-03-17 02:59:31,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 36 states have internal predecessors, (44), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-17 02:59:31,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 88 transitions. [2025-03-17 02:59:31,303 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 88 transitions. Word has length 86 [2025-03-17 02:59:31,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 02:59:31,303 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 88 transitions. [2025-03-17 02:59:31,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2025-03-17 02:59:31,303 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 88 transitions. [2025-03-17 02:59:31,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-17 02:59:31,304 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 02:59:31,304 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 02:59:31,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 02:59:31,305 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 02:59:31,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 02:59:31,305 INFO L85 PathProgramCache]: Analyzing trace with hash -400073204, now seen corresponding path program 1 times [2025-03-17 02:59:31,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 02:59:31,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709790559] [2025-03-17 02:59:31,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 02:59:31,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 02:59:31,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-17 02:59:31,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-17 02:59:31,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 02:59:31,351 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 03:00:18,460 WARN L286 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 205 DAG size of output: 190 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-17 03:00:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2025-03-17 03:00:18,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 03:00:18,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709790559] [2025-03-17 03:00:18,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709790559] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 03:00:18,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 03:00:18,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 03:00:18,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246797283] [2025-03-17 03:00:18,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 03:00:18,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 03:00:18,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 03:00:18,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 03:00:18,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-17 03:00:18,479 INFO L87 Difference]: Start difference. First operand 60 states and 88 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-17 03:00:32,390 WARN L286 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 195 DAG size of output: 189 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-17 03:00:33,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2025-03-17 03:00:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 03:00:34,354 INFO L93 Difference]: Finished difference Result 107 states and 148 transitions. [2025-03-17 03:00:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 03:00:34,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2025-03-17 03:00:34,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 03:00:34,358 INFO L225 Difference]: With dead ends: 107 [2025-03-17 03:00:34,358 INFO L226 Difference]: Without dead ends: 105 [2025-03-17 03:00:34,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2025-03-17 03:00:34,359 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 122 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-17 03:00:34,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 238 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-17 03:00:34,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-03-17 03:00:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 74. [2025-03-17 03:00:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 48 states have internal predecessors, (58), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2025-03-17 03:00:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 106 transitions. [2025-03-17 03:00:34,376 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 106 transitions. Word has length 86 [2025-03-17 03:00:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 03:00:34,376 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 106 transitions. [2025-03-17 03:00:34,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2025-03-17 03:00:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 106 transitions. [2025-03-17 03:00:34,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-17 03:00:34,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 03:00:34,378 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 03:00:34,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 03:00:34,378 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 03:00:34,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 03:00:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1259222503, now seen corresponding path program 1 times [2025-03-17 03:00:34,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 03:00:34,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972096106] [2025-03-17 03:00:34,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 03:00:34,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 03:00:34,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-17 03:00:34,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-17 03:00:34,425 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 03:00:34,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat