./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_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-25_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 4d936c2bc359502c9cc80babbbddc5f5ec41bb334054fc0df7f5bb21f4158f99 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 00:12:34,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 00:12:34,536 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 00:12:34,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 00:12:34,542 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 00:12:34,560 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 00:12:34,561 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 00:12:34,561 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 00:12:34,563 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 00:12:34,563 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 00:12:34,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 00:12:34,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 00:12:34,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 00:12:34,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 00:12:34,568 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 00:12:34,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 00:12:34,569 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 00:12:34,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:12:34,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 00:12:34,570 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 00:12:34,570 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 -> 4d936c2bc359502c9cc80babbbddc5f5ec41bb334054fc0df7f5bb21f4158f99 [2025-03-17 00:12:34,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 00:12:34,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 00:12:34,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 00:12:34,879 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 00:12:34,879 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 00:12:34,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-10.i [2025-03-17 00:12:36,290 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89cc99c7a/890e7dacee374f02a5f47566221ca467/FLAGb986c21bc [2025-03-17 00:12:36,579 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 00:12:36,580 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-10.i [2025-03-17 00:12:36,592 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89cc99c7a/890e7dacee374f02a5f47566221ca467/FLAGb986c21bc [2025-03-17 00:12:36,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89cc99c7a/890e7dacee374f02a5f47566221ca467 [2025-03-17 00:12:36,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 00:12:36,613 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 00:12:36,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 00:12:36,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 00:12:36,620 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 00:12:36,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:36,621 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d70216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36, skipping insertion in model container [2025-03-17 00:12:36,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:36,644 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 00:12:36,794 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-25_file-10.i[915,928] [2025-03-17 00:12:36,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:12:36,913 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 00:12:36,922 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-25_file-10.i[915,928] [2025-03-17 00:12:36,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 00:12:36,985 INFO L204 MainTranslator]: Completed translation [2025-03-17 00:12:36,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36 WrapperNode [2025-03-17 00:12:36,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 00:12:36,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 00:12:36,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 00:12:36,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 00:12:36,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,062 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2025-03-17 00:12:37,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 00:12:37,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 00:12:37,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 00:12:37,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 00:12:37,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,077 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,098 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 00:12:37,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,116 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 00:12:37,141 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 00:12:37,142 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 00:12:37,142 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 00:12:37,143 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (1/1) ... [2025-03-17 00:12:37,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 00:12:37,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:12:37,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 00:12:37,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 00:12:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 00:12:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 00:12:37,199 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 00:12:37,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 00:12:37,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 00:12:37,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 00:12:37,288 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 00:12:37,290 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 00:12:37,750 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L177: havoc property_#t~bitwise27#1;havoc property_#t~ite29#1;havoc property_#t~bitwise28#1;havoc property_#t~short30#1; [2025-03-17 00:12:37,795 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-03-17 00:12:37,796 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 00:12:37,816 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 00:12:37,816 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 00:12:37,817 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:12:37 BoogieIcfgContainer [2025-03-17 00:12:37,817 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 00:12:37,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 00:12:37,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 00:12:37,825 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 00:12:37,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 12:12:36" (1/3) ... [2025-03-17 00:12:37,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2555a9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:12:37, skipping insertion in model container [2025-03-17 00:12:37,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:12:36" (2/3) ... [2025-03-17 00:12:37,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2555a9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:12:37, skipping insertion in model container [2025-03-17 00:12:37,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:12:37" (3/3) ... [2025-03-17 00:12:37,831 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-10.i [2025-03-17 00:12:37,846 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 00:12:37,848 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-10.i that has 2 procedures, 100 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 00:12:37,907 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 00:12:37,924 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;@356e34b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 00:12:37,925 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 00:12:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 66 states have internal predecessors, (89), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-17 00:12:37,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2025-03-17 00:12:37,946 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:12:37,948 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:12:37,949 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:12:37,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:12:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash -897315946, now seen corresponding path program 1 times [2025-03-17 00:12:37,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:12:37,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664185457] [2025-03-17 00:12:37,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:12:37,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:12:38,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 205 statements into 1 equivalence classes. [2025-03-17 00:12:38,161 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 205 of 205 statements. [2025-03-17 00:12:38,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:12:38,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:12:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2025-03-17 00:12:38,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:12:38,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664185457] [2025-03-17 00:12:38,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664185457] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 00:12:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38477171] [2025-03-17 00:12:38,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:12:38,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 00:12:38,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 00:12:38,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 00:12:38,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 00:12:38,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 205 statements into 1 equivalence classes. [2025-03-17 00:12:38,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 205 of 205 statements. [2025-03-17 00:12:38,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:12:38,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:12:38,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 00:12:38,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 00:12:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2025-03-17 00:12:38,673 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 00:12:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38477171] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:12:38,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 00:12:38,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 00:12:38,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979279639] [2025-03-17 00:12:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:12:38,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 00:12:38,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:12:38,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 00:12:38,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:12:38,711 INFO L87 Difference]: Start difference. First operand has 100 states, 65 states have (on average 1.3692307692307693) internal successors, (89), 66 states have internal predecessors, (89), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-17 00:12:38,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:12:38,765 INFO L93 Difference]: Finished difference Result 197 states and 336 transitions. [2025-03-17 00:12:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 00:12:38,769 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) Word has length 205 [2025-03-17 00:12:38,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:12:38,777 INFO L225 Difference]: With dead ends: 197 [2025-03-17 00:12:38,778 INFO L226 Difference]: Without dead ends: 98 [2025-03-17 00:12:38,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 00:12:38,788 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 00:12:38,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 00:12:38,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-03-17 00:12:38,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2025-03-17 00:12:38,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.328125) internal successors, (85), 64 states have internal predecessors, (85), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-17 00:12:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 149 transitions. [2025-03-17 00:12:38,862 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 149 transitions. Word has length 205 [2025-03-17 00:12:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:12:38,863 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 149 transitions. [2025-03-17 00:12:38,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.0) internal successors, (50), 2 states have internal predecessors, (50), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-17 00:12:38,863 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 149 transitions. [2025-03-17 00:12:38,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2025-03-17 00:12:38,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:12:38,872 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:12:38,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 00:12:39,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 00:12:39,073 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:12:39,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:12:39,075 INFO L85 PathProgramCache]: Analyzing trace with hash -643051178, now seen corresponding path program 1 times [2025-03-17 00:12:39,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:12:39,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143736229] [2025-03-17 00:12:39,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:12:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:12:39,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 205 statements into 1 equivalence classes. [2025-03-17 00:12:39,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 205 of 205 statements. [2025-03-17 00:12:39,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:12:39,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:12:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2025-03-17 00:12:39,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:12:39,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143736229] [2025-03-17 00:12:39,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143736229] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:12:39,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:12:39,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 00:12:39,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528307117] [2025-03-17 00:12:39,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:12:39,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 00:12:39,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:12:39,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 00:12:39,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 00:12:39,860 INFO L87 Difference]: Start difference. First operand 98 states and 149 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-03-17 00:12:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:12:40,180 INFO L93 Difference]: Finished difference Result 293 states and 446 transitions. [2025-03-17 00:12:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 00:12:40,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 205 [2025-03-17 00:12:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:12:40,188 INFO L225 Difference]: With dead ends: 293 [2025-03-17 00:12:40,189 INFO L226 Difference]: Without dead ends: 196 [2025-03-17 00:12:40,190 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 [2025-03-17 00:12:40,193 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 94 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 00:12:40,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 416 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 00:12:40,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2025-03-17 00:12:40,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 162. [2025-03-17 00:12:40,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 95 states have (on average 1.263157894736842) internal successors, (120), 95 states have internal predecessors, (120), 64 states have call successors, (64), 2 states have call predecessors, (64), 2 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2025-03-17 00:12:40,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 248 transitions. [2025-03-17 00:12:40,231 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 248 transitions. Word has length 205 [2025-03-17 00:12:40,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:12:40,231 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 248 transitions. [2025-03-17 00:12:40,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-03-17 00:12:40,232 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 248 transitions. [2025-03-17 00:12:40,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-03-17 00:12:40,235 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:12:40,235 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:12:40,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 00:12:40,236 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:12:40,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:12:40,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1320811234, now seen corresponding path program 1 times [2025-03-17 00:12:40,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:12:40,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592309678] [2025-03-17 00:12:40,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:12:40,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:12:40,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-03-17 00:12:40,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-03-17 00:12:40,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:12:40,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:13:32,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2025-03-17 00:13:32,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:13:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592309678] [2025-03-17 00:13:32,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592309678] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:13:32,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:13:32,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-17 00:13:32,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707306928] [2025-03-17 00:13:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:13:32,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 00:13:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:13:32,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 00:13:32,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-03-17 00:13:32,266 INFO L87 Difference]: Start difference. First operand 162 states and 248 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-17 00:13:34,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:13:34,231 INFO L93 Difference]: Finished difference Result 471 states and 696 transitions. [2025-03-17 00:13:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 00:13:34,232 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 206 [2025-03-17 00:13:34,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:13:34,237 INFO L225 Difference]: With dead ends: 471 [2025-03-17 00:13:34,237 INFO L226 Difference]: Without dead ends: 374 [2025-03-17 00:13:34,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2025-03-17 00:13:34,243 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 400 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-17 00:13:34,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 965 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-17 00:13:34,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2025-03-17 00:13:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 284. [2025-03-17 00:13:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 181 states have (on average 1.2651933701657458) internal successors, (229), 182 states have internal predecessors, (229), 96 states have call successors, (96), 6 states have call predecessors, (96), 6 states have return successors, (96), 95 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-17 00:13:34,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 421 transitions. [2025-03-17 00:13:34,298 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 421 transitions. Word has length 206 [2025-03-17 00:13:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:13:34,300 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 421 transitions. [2025-03-17 00:13:34,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2025-03-17 00:13:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 421 transitions. [2025-03-17 00:13:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-03-17 00:13:34,303 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:13:34,303 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:13:34,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 00:13:34,304 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:13:34,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:13:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1191728515, now seen corresponding path program 1 times [2025-03-17 00:13:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:13:34,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694240454] [2025-03-17 00:13:34,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:13:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:13:34,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-03-17 00:13:34,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-03-17 00:13:34,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:13:34,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 00:14:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2025-03-17 00:14:00,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 00:14:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694240454] [2025-03-17 00:14:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694240454] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 00:14:00,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 00:14:00,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 00:14:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066174399] [2025-03-17 00:14:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 00:14:00,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 00:14:00,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 00:14:00,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 00:14:00,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-03-17 00:14:00,495 INFO L87 Difference]: Start difference. First operand 284 states and 421 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-03-17 00:14:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 00:14:01,672 INFO L93 Difference]: Finished difference Result 465 states and 678 transitions. [2025-03-17 00:14:01,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 00:14:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 206 [2025-03-17 00:14:01,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 00:14:01,677 INFO L225 Difference]: With dead ends: 465 [2025-03-17 00:14:01,677 INFO L226 Difference]: Without dead ends: 368 [2025-03-17 00:14:01,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2025-03-17 00:14:01,679 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 441 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-17 00:14:01,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 723 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-17 00:14:01,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2025-03-17 00:14:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 278. [2025-03-17 00:14:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 175 states have (on average 1.2571428571428571) internal successors, (220), 176 states have internal predecessors, (220), 96 states have call successors, (96), 6 states have call predecessors, (96), 6 states have return successors, (96), 95 states have call predecessors, (96), 96 states have call successors, (96) [2025-03-17 00:14:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 412 transitions. [2025-03-17 00:14:01,718 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 412 transitions. Word has length 206 [2025-03-17 00:14:01,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 00:14:01,718 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 412 transitions. [2025-03-17 00:14:01,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2025-03-17 00:14:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 412 transitions. [2025-03-17 00:14:01,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2025-03-17 00:14:01,721 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 00:14:01,721 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 00:14:01,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 00:14:01,721 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 00:14:01,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 00:14:01,722 INFO L85 PathProgramCache]: Analyzing trace with hash 656167422, now seen corresponding path program 1 times [2025-03-17 00:14:01,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 00:14:01,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260378230] [2025-03-17 00:14:01,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 00:14:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 00:14:01,733 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 206 statements into 1 equivalence classes. [2025-03-17 00:14:01,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 206 of 206 statements. [2025-03-17 00:14:01,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 00:14:01,800 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat