./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-28.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-28.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 84e700b2d3623c1509438aede3e69c0d4bf9f6c3881be6358796f2b0ac7a8926 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 23:52:37,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 23:52:37,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 23:52:37,931 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 23:52:37,931 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 23:52:37,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 23:52:37,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 23:52:37,955 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 23:52:37,955 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 23:52:37,955 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 23:52:37,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 23:52:37,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 23:52:37,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 23:52:37,956 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 23:52:37,957 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 23:52:37,957 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 23:52:37,958 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 23:52:37,958 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 23:52:37,958 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 23:52:37,958 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 23:52:37,958 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 23:52:37,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 23:52:37,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 23:52:37,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:52:37,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 23:52:37,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 23:52:37,959 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 23:52:37,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 23:52:37,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 23:52:37,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 23:52:37,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 23:52:37,959 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 23:52:37,959 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 23:52:37,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 23:52:37,959 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 -> 84e700b2d3623c1509438aede3e69c0d4bf9f6c3881be6358796f2b0ac7a8926 [2025-03-16 23:52:38,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 23:52:38,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 23:52:38,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 23:52:38,218 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 23:52:38,219 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 23:52:38,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-28.i [2025-03-16 23:52:39,351 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2aa0ed8/3145d747a9a6499fa02b2b1a6f2ca25e/FLAG37a8f7dca [2025-03-16 23:52:39,585 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 23:52:39,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-28.i [2025-03-16 23:52:39,593 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2aa0ed8/3145d747a9a6499fa02b2b1a6f2ca25e/FLAG37a8f7dca [2025-03-16 23:52:39,924 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2aa0ed8/3145d747a9a6499fa02b2b1a6f2ca25e [2025-03-16 23:52:39,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 23:52:39,927 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 23:52:39,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 23:52:39,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 23:52:39,931 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 23:52:39,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:52:39" (1/1) ... [2025-03-16 23:52:39,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc80e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:39, skipping insertion in model container [2025-03-16 23:52:39,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:52:39" (1/1) ... [2025-03-16 23:52:39,946 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 23:52:40,047 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-28.i[915,928] [2025-03-16 23:52:40,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:52:40,123 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 23:52:40,134 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-28.i[915,928] [2025-03-16 23:52:40,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:52:40,191 INFO L204 MainTranslator]: Completed translation [2025-03-16 23:52:40,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40 WrapperNode [2025-03-16 23:52:40,192 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 23:52:40,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 23:52:40,193 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 23:52:40,193 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 23:52:40,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,240 INFO L138 Inliner]: procedures = 26, calls = 42, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 208 [2025-03-16 23:52:40,243 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 23:52:40,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 23:52:40,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 23:52:40,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 23:52:40,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,281 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 23:52:40,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,291 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,296 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 23:52:40,302 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 23:52:40,302 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 23:52:40,302 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 23:52:40,303 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (1/1) ... [2025-03-16 23:52:40,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:52:40,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:52:40,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-16 23:52:40,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-16 23:52:40,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 23:52:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 23:52:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 23:52:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 23:52:40,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 23:52:40,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 23:52:40,456 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 23:52:40,458 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 23:52:40,738 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L174: havoc property_#t~bitwise22#1;havoc property_#t~short23#1; [2025-03-16 23:52:40,774 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2025-03-16 23:52:40,775 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 23:52:40,787 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 23:52:40,787 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 23:52:40,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:52:40 BoogieIcfgContainer [2025-03-16 23:52:40,788 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 23:52:40,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 23:52:40,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 23:52:40,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 23:52:40,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 11:52:39" (1/3) ... [2025-03-16 23:52:40,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17533baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:52:40, skipping insertion in model container [2025-03-16 23:52:40,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:52:40" (2/3) ... [2025-03-16 23:52:40,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17533baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:52:40, skipping insertion in model container [2025-03-16 23:52:40,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:52:40" (3/3) ... [2025-03-16 23:52:40,797 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-28.i [2025-03-16 23:52:40,808 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 23:52:40,810 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-28.i that has 2 procedures, 85 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 23:52:40,848 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 23:52:40,856 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;@361ca03f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 23:52:40,856 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 23:52:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 54 states have internal predecessors, (72), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-16 23:52:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2025-03-16 23:52:40,870 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:52:40,871 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:52:40,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:52:40,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:52:40,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1937537941, now seen corresponding path program 1 times [2025-03-16 23:52:40,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:52:40,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112242258] [2025-03-16 23:52:40,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:52:40,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:52:40,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-03-16 23:52:40,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-03-16 23:52:40,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:52:40,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:52:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2025-03-16 23:52:41,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:52:41,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112242258] [2025-03-16 23:52:41,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112242258] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 23:52:41,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381412845] [2025-03-16 23:52:41,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:52:41,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 23:52:41,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:52:41,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 23:52:41,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-16 23:52:41,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-03-16 23:52:41,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-03-16 23:52:41,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:52:41,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:52:41,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 23:52:41,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 23:52:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2025-03-16 23:52:41,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 23:52:41,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381412845] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:52:41,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 23:52:41,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-16 23:52:41,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59651925] [2025-03-16 23:52:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:52:41,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 23:52:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:52:41,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 23:52:41,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:52:41,353 INFO L87 Difference]: Start difference. First operand has 85 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 54 states have internal predecessors, (72), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-16 23:52:41,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:52:41,374 INFO L93 Difference]: Finished difference Result 167 states and 287 transitions. [2025-03-16 23:52:41,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 23:52:41,376 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) Word has length 184 [2025-03-16 23:52:41,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:52:41,382 INFO L225 Difference]: With dead ends: 167 [2025-03-16 23:52:41,382 INFO L226 Difference]: Without dead ends: 83 [2025-03-16 23:52:41,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:52:41,387 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:52:41,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:52:41,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-03-16 23:52:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-03-16 23:52:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 29 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-16 23:52:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2025-03-16 23:52:41,421 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 184 [2025-03-16 23:52:41,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:52:41,422 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2025-03-16 23:52:41,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 2 states have call successors, (29) [2025-03-16 23:52:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2025-03-16 23:52:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2025-03-16 23:52:41,424 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:52:41,425 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:52:41,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-16 23:52:41,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-16 23:52:41,626 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:52:41,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:52:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash 585291952, now seen corresponding path program 1 times [2025-03-16 23:52:41,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:52:41,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845882338] [2025-03-16 23:52:41,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:52:41,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:52:41,643 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-03-16 23:52:41,847 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-03-16 23:52:41,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:52:41,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:54:08,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2025-03-16 23:54:08,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:54:08,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845882338] [2025-03-16 23:54:08,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845882338] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:54:08,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:54:08,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-16 23:54:08,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845318706] [2025-03-16 23:54:08,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:54:08,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-16 23:54:08,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:54:08,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-16 23:54:08,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-16 23:54:08,984 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2025-03-16 23:54:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:54:10,960 INFO L93 Difference]: Finished difference Result 339 states and 502 transitions. [2025-03-16 23:54:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-16 23:54:10,961 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 184 [2025-03-16 23:54:10,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:54:10,963 INFO L225 Difference]: With dead ends: 339 [2025-03-16 23:54:10,963 INFO L226 Difference]: Without dead ends: 257 [2025-03-16 23:54:10,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2025-03-16 23:54:10,967 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 270 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:54:10,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 579 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-16 23:54:10,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2025-03-16 23:54:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 176. [2025-03-16 23:54:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 115 states have (on average 1.3304347826086957) internal successors, (153), 115 states have internal predecessors, (153), 58 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-16 23:54:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 269 transitions. [2025-03-16 23:54:10,995 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 269 transitions. Word has length 184 [2025-03-16 23:54:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:54:10,996 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 269 transitions. [2025-03-16 23:54:10,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2025-03-16 23:54:10,996 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 269 transitions. [2025-03-16 23:54:10,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2025-03-16 23:54:10,998 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:54:10,998 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:54:10,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 23:54:10,998 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:54:10,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:54:10,999 INFO L85 PathProgramCache]: Analyzing trace with hash 388778447, now seen corresponding path program 1 times [2025-03-16 23:54:10,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:54:10,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872979808] [2025-03-16 23:54:10,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:54:10,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:54:11,009 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-03-16 23:54:11,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-03-16 23:54:11,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:54:11,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:54:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2025-03-16 23:54:11,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:54:11,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872979808] [2025-03-16 23:54:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872979808] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:54:11,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:54:11,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-16 23:54:11,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516867138] [2025-03-16 23:54:11,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:54:11,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-16 23:54:11,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:54:11,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-16 23:54:11,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-16 23:54:11,114 INFO L87 Difference]: Start difference. First operand 176 states and 269 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2025-03-16 23:54:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:54:11,373 INFO L93 Difference]: Finished difference Result 484 states and 738 transitions. [2025-03-16 23:54:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 23:54:11,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) Word has length 184 [2025-03-16 23:54:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:54:11,380 INFO L225 Difference]: With dead ends: 484 [2025-03-16 23:54:11,381 INFO L226 Difference]: Without dead ends: 309 [2025-03-16 23:54:11,382 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-03-16 23:54:11,383 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 301 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 23:54:11,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 476 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 23:54:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2025-03-16 23:54:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 183. [2025-03-16 23:54:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 122 states have (on average 1.3278688524590163) internal successors, (162), 122 states have internal predecessors, (162), 58 states have call successors, (58), 2 states have call predecessors, (58), 2 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-16 23:54:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 278 transitions. [2025-03-16 23:54:11,417 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 278 transitions. Word has length 184 [2025-03-16 23:54:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:54:11,418 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 278 transitions. [2025-03-16 23:54:11,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (29), 1 states have call predecessors, (29), 1 states have call successors, (29) [2025-03-16 23:54:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 278 transitions. [2025-03-16 23:54:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2025-03-16 23:54:11,420 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:54:11,421 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 23:54:11,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 23:54:11,421 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:54:11,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:54:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash 79733327, now seen corresponding path program 1 times [2025-03-16 23:54:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:54:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378713877] [2025-03-16 23:54:11,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:54:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:54:11,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-03-16 23:54:11,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-03-16 23:54:11,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:54:11,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat