./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-10.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-100_file-10.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 1a0ae75f5f463a17182a89879ce4658fe5861ec9a86c60f6d3e9ad481b43e0d3 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 23:39:08,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 23:39:09,030 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 23:39:09,036 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 23:39:09,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 23:39:09,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 23:39:09,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 23:39:09,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 23:39:09,058 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 23:39:09,058 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 23:39:09,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 23:39:09,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 23:39:09,059 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 23:39:09,059 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 23:39:09,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 23:39:09,060 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 23:39:09,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 23:39:09,060 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 23:39:09,060 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 23:39:09,060 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 23:39:09,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 23:39:09,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 23:39:09,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 23:39:09,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:39:09,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 23:39:09,061 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 23:39:09,061 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 23:39:09,061 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 23:39:09,061 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 23:39:09,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 23:39:09,061 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 23:39:09,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 23:39:09,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 23:39:09,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 23:39:09,061 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 -> 1a0ae75f5f463a17182a89879ce4658fe5861ec9a86c60f6d3e9ad481b43e0d3 [2025-03-16 23:39:09,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 23:39:09,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 23:39:09,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 23:39:09,283 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 23:39:09,283 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 23:39:09,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-10.i [2025-03-16 23:39:10,419 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f95a21e/81a3c4d072ec487d8b5ebec513193bea/FLAGb94476a38 [2025-03-16 23:39:10,632 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 23:39:10,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-10.i [2025-03-16 23:39:10,639 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f95a21e/81a3c4d072ec487d8b5ebec513193bea/FLAGb94476a38 [2025-03-16 23:39:10,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12f95a21e/81a3c4d072ec487d8b5ebec513193bea [2025-03-16 23:39:10,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 23:39:10,976 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 23:39:10,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 23:39:10,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 23:39:10,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 23:39:10,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:39:10" (1/1) ... [2025-03-16 23:39:10,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e4d841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:10, skipping insertion in model container [2025-03-16 23:39:10,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 11:39:10" (1/1) ... [2025-03-16 23:39:10,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 23:39:11,090 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-100_file-10.i[916,929] [2025-03-16 23:39:11,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:39:11,160 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 23:39:11,167 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-100_file-10.i[916,929] [2025-03-16 23:39:11,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 23:39:11,217 INFO L204 MainTranslator]: Completed translation [2025-03-16 23:39:11,218 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11 WrapperNode [2025-03-16 23:39:11,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 23:39:11,220 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 23:39:11,220 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 23:39:11,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 23:39:11,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,260 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 340 [2025-03-16 23:39:11,260 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 23:39:11,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 23:39:11,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 23:39:11,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 23:39:11,267 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,292 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 23:39:11,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,305 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,309 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,320 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 23:39:11,320 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 23:39:11,320 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 23:39:11,321 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 23:39:11,321 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (1/1) ... [2025-03-16 23:39:11,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 23:39:11,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:39:11,345 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 23:39:11,347 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 23:39:11,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 23:39:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-16 23:39:11,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-16 23:39:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 23:39:11,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 23:39:11,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 23:39:11,427 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 23:39:11,428 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 23:39:11,882 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L272: havoc property_#t~bitwise36#1;havoc property_#t~ite38#1;havoc property_#t~bitwise37#1;havoc property_#t~short39#1; [2025-03-16 23:39:11,926 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-03-16 23:39:11,926 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 23:39:11,945 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 23:39:11,945 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 23:39:11,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:39:11 BoogieIcfgContainer [2025-03-16 23:39:11,946 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 23:39:11,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 23:39:11,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 23:39:11,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 23:39:11,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 11:39:10" (1/3) ... [2025-03-16 23:39:11,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f089d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:39:11, skipping insertion in model container [2025-03-16 23:39:11,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 11:39:11" (2/3) ... [2025-03-16 23:39:11,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f089d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 11:39:11, skipping insertion in model container [2025-03-16 23:39:11,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 11:39:11" (3/3) ... [2025-03-16 23:39:11,953 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-10.i [2025-03-16 23:39:11,964 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 23:39:11,968 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-10.i that has 2 procedures, 145 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 23:39:12,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 23:39:12,022 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;@69109382, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 23:39:12,022 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 23:39:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 93 states have (on average 1.4731182795698925) internal successors, (137), 94 states have internal predecessors, (137), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-16 23:39:12,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-03-16 23:39:12,038 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:39:12,039 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:12,039 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:39:12,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:39:12,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1141880870, now seen corresponding path program 1 times [2025-03-16 23:39:12,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:39:12,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326296502] [2025-03-16 23:39:12,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:39:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:39:12,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-16 23:39:12,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-16 23:39:12,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:39:12,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:39:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-16 23:39:12,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:39:12,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326296502] [2025-03-16 23:39:12,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326296502] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 23:39:12,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896793741] [2025-03-16 23:39:12,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:39:12,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 23:39:12,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 23:39:12,388 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 23:39:12,390 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 23:39:12,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-16 23:39:12,569 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-16 23:39:12,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:39:12,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:39:12,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-16 23:39:12,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 23:39:12,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-16 23:39:12,627 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 23:39:12,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896793741] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:39:12,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 23:39:12,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-16 23:39:12,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849083123] [2025-03-16 23:39:12,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:39:12,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 23:39:12,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:39:12,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 23:39:12,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 23:39:12,654 INFO L87 Difference]: Start difference. First operand has 145 states, 93 states have (on average 1.4731182795698925) internal successors, (137), 94 states have internal predecessors, (137), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-16 23:39:12,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:39:12,699 INFO L93 Difference]: Finished difference Result 287 states and 517 transitions. [2025-03-16 23:39:12,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 23:39:12,702 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 306 [2025-03-16 23:39:12,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:39:12,709 INFO L225 Difference]: With dead ends: 287 [2025-03-16 23:39:12,709 INFO L226 Difference]: Without dead ends: 143 [2025-03-16 23:39:12,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 307 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 23:39:12,714 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:39:12,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:39:12,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2025-03-16 23:39:12,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2025-03-16 23:39:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 92 states have internal predecessors, (133), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-16 23:39:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 231 transitions. [2025-03-16 23:39:12,761 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 231 transitions. Word has length 306 [2025-03-16 23:39:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:39:12,763 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 231 transitions. [2025-03-16 23:39:12,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-16 23:39:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 231 transitions. [2025-03-16 23:39:12,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-03-16 23:39:12,770 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:39:12,770 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:12,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-16 23:39:12,971 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 23:39:12,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:39:12,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:39:12,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1833954947, now seen corresponding path program 1 times [2025-03-16 23:39:12,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:39:12,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175844460] [2025-03-16 23:39:12,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:39:12,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:39:12,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-16 23:39:13,047 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-16 23:39:13,047 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:39:13,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:39:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-16 23:39:13,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:39:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175844460] [2025-03-16 23:39:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175844460] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:39:13,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:39:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 23:39:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349420743] [2025-03-16 23:39:13,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:39:13,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 23:39:13,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:39:13,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 23:39:13,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:39:13,235 INFO L87 Difference]: Start difference. First operand 143 states and 231 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-16 23:39:13,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:39:13,310 INFO L93 Difference]: Finished difference Result 385 states and 620 transitions. [2025-03-16 23:39:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 23:39:13,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 306 [2025-03-16 23:39:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:39:13,314 INFO L225 Difference]: With dead ends: 385 [2025-03-16 23:39:13,314 INFO L226 Difference]: Without dead ends: 243 [2025-03-16 23:39:13,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:39:13,318 INFO L435 NwaCegarLoop]: 300 mSDtfsCounter, 157 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:39:13,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 515 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:39:13,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2025-03-16 23:39:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2025-03-16 23:39:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 162 states have (on average 1.462962962962963) internal successors, (237), 163 states have internal predecessors, (237), 75 states have call successors, (75), 2 states have call predecessors, (75), 2 states have return successors, (75), 74 states have call predecessors, (75), 75 states have call successors, (75) [2025-03-16 23:39:13,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 387 transitions. [2025-03-16 23:39:13,353 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 387 transitions. Word has length 306 [2025-03-16 23:39:13,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:39:13,355 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 387 transitions. [2025-03-16 23:39:13,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-16 23:39:13,356 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 387 transitions. [2025-03-16 23:39:13,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2025-03-16 23:39:13,360 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:39:13,360 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:13,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 23:39:13,360 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:39:13,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:39:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1129537123, now seen corresponding path program 1 times [2025-03-16 23:39:13,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:39:13,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816937770] [2025-03-16 23:39:13,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:39:13,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:39:13,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 306 statements into 1 equivalence classes. [2025-03-16 23:39:13,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 306 of 306 statements. [2025-03-16 23:39:13,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:39:13,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:39:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-16 23:39:13,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:39:13,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816937770] [2025-03-16 23:39:13,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816937770] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:39:13,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:39:13,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 23:39:13,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114988433] [2025-03-16 23:39:13,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:39:13,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 23:39:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:39:13,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 23:39:13,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:39:13,725 INFO L87 Difference]: Start difference. First operand 240 states and 387 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-16 23:39:13,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:39:13,789 INFO L93 Difference]: Finished difference Result 718 states and 1159 transitions. [2025-03-16 23:39:13,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 23:39:13,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 306 [2025-03-16 23:39:13,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:39:13,798 INFO L225 Difference]: With dead ends: 718 [2025-03-16 23:39:13,799 INFO L226 Difference]: Without dead ends: 479 [2025-03-16 23:39:13,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 23:39:13,802 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 141 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 23:39:13,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 504 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 23:39:13,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2025-03-16 23:39:13,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 475. [2025-03-16 23:39:13,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 320 states have (on average 1.45625) internal successors, (466), 322 states have internal predecessors, (466), 150 states have call successors, (150), 4 states have call predecessors, (150), 4 states have return successors, (150), 148 states have call predecessors, (150), 150 states have call successors, (150) [2025-03-16 23:39:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 766 transitions. [2025-03-16 23:39:13,880 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 766 transitions. Word has length 306 [2025-03-16 23:39:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:39:13,881 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 766 transitions. [2025-03-16 23:39:13,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-16 23:39:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 766 transitions. [2025-03-16 23:39:13,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2025-03-16 23:39:13,884 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:39:13,884 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:13,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 23:39:13,885 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:39:13,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:39:13,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1369373624, now seen corresponding path program 1 times [2025-03-16 23:39:13,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:39:13,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66545596] [2025-03-16 23:39:13,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:39:13,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:39:13,908 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 308 statements into 1 equivalence classes. [2025-03-16 23:39:13,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 308 of 308 statements. [2025-03-16 23:39:13,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:39:13,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:39:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-16 23:39:14,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:39:14,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66545596] [2025-03-16 23:39:14,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66545596] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:39:14,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:39:14,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 23:39:14,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121058619] [2025-03-16 23:39:14,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:39:14,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 23:39:14,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:39:14,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 23:39:14,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 23:39:14,280 INFO L87 Difference]: Start difference. First operand 475 states and 766 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-16 23:39:14,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:39:14,538 INFO L93 Difference]: Finished difference Result 1257 states and 2029 transitions. [2025-03-16 23:39:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 23:39:14,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 308 [2025-03-16 23:39:14,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:39:14,544 INFO L225 Difference]: With dead ends: 1257 [2025-03-16 23:39:14,544 INFO L226 Difference]: Without dead ends: 783 [2025-03-16 23:39:14,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-16 23:39:14,547 INFO L435 NwaCegarLoop]: 222 mSDtfsCounter, 172 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 23:39:14,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 659 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 23:39:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2025-03-16 23:39:14,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 653. [2025-03-16 23:39:14,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 447 states have (on average 1.4966442953020134) internal successors, (669), 449 states have internal predecessors, (669), 199 states have call successors, (199), 6 states have call predecessors, (199), 6 states have return successors, (199), 197 states have call predecessors, (199), 199 states have call successors, (199) [2025-03-16 23:39:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1067 transitions. [2025-03-16 23:39:14,632 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1067 transitions. Word has length 308 [2025-03-16 23:39:14,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:39:14,633 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 1067 transitions. [2025-03-16 23:39:14,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-16 23:39:14,633 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1067 transitions. [2025-03-16 23:39:14,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2025-03-16 23:39:14,635 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:39:14,636 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:14,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 23:39:14,636 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:39:14,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:39:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash 934815484, now seen corresponding path program 1 times [2025-03-16 23:39:14,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:39:14,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023972959] [2025-03-16 23:39:14,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:39:14,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:39:14,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-03-16 23:39:14,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-03-16 23:39:14,887 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:39:14,887 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:39:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-16 23:39:29,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:39:29,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023972959] [2025-03-16 23:39:29,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023972959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:39:29,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:39:29,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-16 23:39:29,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130076024] [2025-03-16 23:39:29,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:39:29,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-16 23:39:29,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:39:29,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-16 23:39:29,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2025-03-16 23:39:29,583 INFO L87 Difference]: Start difference. First operand 653 states and 1067 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 2 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-16 23:39:31,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:39:31,135 INFO L93 Difference]: Finished difference Result 2071 states and 3236 transitions. [2025-03-16 23:39:31,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-16 23:39:31,136 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 2 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 309 [2025-03-16 23:39:31,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:39:31,144 INFO L225 Difference]: With dead ends: 2071 [2025-03-16 23:39:31,145 INFO L226 Difference]: Without dead ends: 1597 [2025-03-16 23:39:31,147 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2025-03-16 23:39:31,148 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 494 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-16 23:39:31,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 1486 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-16 23:39:31,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1597 states. [2025-03-16 23:39:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1597 to 1132. [2025-03-16 23:39:31,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 762 states have (on average 1.398950131233596) internal successors, (1066), 767 states have internal predecessors, (1066), 349 states have call successors, (349), 20 states have call predecessors, (349), 20 states have return successors, (349), 344 states have call predecessors, (349), 349 states have call successors, (349) [2025-03-16 23:39:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1764 transitions. [2025-03-16 23:39:31,246 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1764 transitions. Word has length 309 [2025-03-16 23:39:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:39:31,248 INFO L471 AbstractCegarLoop]: Abstraction has 1132 states and 1764 transitions. [2025-03-16 23:39:31,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 15 states have internal predecessors, (67), 2 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-16 23:39:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1764 transitions. [2025-03-16 23:39:31,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2025-03-16 23:39:31,251 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:39:31,251 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:39:31,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 23:39:31,251 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:39:31,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:39:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1418360349, now seen corresponding path program 1 times [2025-03-16 23:39:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:39:31,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370286236] [2025-03-16 23:39:31,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:39:31,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:39:31,271 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-03-16 23:39:31,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-03-16 23:39:31,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:39:31,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 23:40:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-16 23:40:16,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 23:40:16,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370286236] [2025-03-16 23:40:16,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370286236] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 23:40:16,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 23:40:16,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-16 23:40:16,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292636914] [2025-03-16 23:40:16,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 23:40:16,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-16 23:40:16,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 23:40:16,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-16 23:40:16,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2025-03-16 23:40:16,034 INFO L87 Difference]: Start difference. First operand 1132 states and 1764 transitions. Second operand has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2025-03-16 23:40:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 23:40:18,931 INFO L93 Difference]: Finished difference Result 2539 states and 3877 transitions. [2025-03-16 23:40:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-16 23:40:18,932 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) Word has length 309 [2025-03-16 23:40:18,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 23:40:18,941 INFO L225 Difference]: With dead ends: 2539 [2025-03-16 23:40:18,941 INFO L226 Difference]: Without dead ends: 2065 [2025-03-16 23:40:18,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2025-03-16 23:40:18,945 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 891 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-16 23:40:18,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1674 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-16 23:40:18,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2025-03-16 23:40:19,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1273. [2025-03-16 23:40:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 902 states have (on average 1.4523281596452329) internal successors, (1310), 906 states have internal predecessors, (1310), 349 states have call successors, (349), 21 states have call predecessors, (349), 21 states have return successors, (349), 345 states have call predecessors, (349), 349 states have call successors, (349) [2025-03-16 23:40:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 2008 transitions. [2025-03-16 23:40:19,033 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 2008 transitions. Word has length 309 [2025-03-16 23:40:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 23:40:19,034 INFO L471 AbstractCegarLoop]: Abstraction has 1273 states and 2008 transitions. [2025-03-16 23:40:19,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.1875) internal successors, (67), 16 states have internal predecessors, (67), 3 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 3 states have call predecessors, (49), 3 states have call successors, (49) [2025-03-16 23:40:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 2008 transitions. [2025-03-16 23:40:19,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2025-03-16 23:40:19,038 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 23:40:19,038 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:40:19,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 23:40:19,038 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 23:40:19,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 23:40:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash -389094114, now seen corresponding path program 1 times [2025-03-16 23:40:19,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 23:40:19,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885441544] [2025-03-16 23:40:19,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 23:40:19,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 23:40:19,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 309 statements into 1 equivalence classes. [2025-03-16 23:40:19,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 309 of 309 statements. [2025-03-16 23:40:19,171 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 23:40:19,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat