./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label12.c --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/eca-rers2012/Problem12_label12.c -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 d0b5df85e0a9ddd1f309535c1c84b5e9767d041ee38e1a69151fb90b019fbb4f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 14:53:41,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 14:53:41,239 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 14:53:41,242 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 14:53:41,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 14:53:41,263 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 14:53:41,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 14:53:41,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 14:53:41,264 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 14:53:41,264 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 14:53:41,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 14:53:41,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 14:53:41,264 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 14:53:41,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 14:53:41,265 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 14:53:41,265 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 14:53:41,265 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 14:53:41,265 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 14:53:41,265 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 14:53:41,266 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 14:53:41,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 14:53:41,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 14:53:41,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 14:53:41,267 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 14:53:41,268 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 14:53:41,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 14:53:41,268 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 -> d0b5df85e0a9ddd1f309535c1c84b5e9767d041ee38e1a69151fb90b019fbb4f [2025-03-16 14:53:41,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 14:53:41,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 14:53:41,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 14:53:41,517 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 14:53:41,517 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 14:53:41,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label12.c [2025-03-16 14:53:42,660 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa61f3e5/983e7635f1c24abf9264e47f0f62ec64/FLAG46f07007c [2025-03-16 14:53:43,133 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 14:53:43,134 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label12.c [2025-03-16 14:53:43,158 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa61f3e5/983e7635f1c24abf9264e47f0f62ec64/FLAG46f07007c [2025-03-16 14:53:43,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa61f3e5/983e7635f1c24abf9264e47f0f62ec64 [2025-03-16 14:53:43,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 14:53:43,222 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 14:53:43,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 14:53:43,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 14:53:43,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 14:53:43,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 02:53:43" (1/1) ... [2025-03-16 14:53:43,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ad0c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:43, skipping insertion in model container [2025-03-16 14:53:43,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 02:53:43" (1/1) ... [2025-03-16 14:53:43,291 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 14:53:43,482 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/eca-rers2012/Problem12_label12.c[7173,7186] [2025-03-16 14:53:43,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 14:53:43,951 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 14:53:43,973 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/eca-rers2012/Problem12_label12.c[7173,7186] [2025-03-16 14:53:44,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 14:53:44,237 INFO L204 MainTranslator]: Completed translation [2025-03-16 14:53:44,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44 WrapperNode [2025-03-16 14:53:44,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 14:53:44,239 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 14:53:44,239 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 14:53:44,239 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 14:53:44,243 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,498 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4758 [2025-03-16 14:53:44,498 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 14:53:44,498 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 14:53:44,498 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 14:53:44,498 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 14:53:44,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,540 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,678 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 14:53:44,679 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,818 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 14:53:44,883 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 14:53:44,883 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 14:53:44,883 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 14:53:44,884 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (1/1) ... [2025-03-16 14:53:44,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 14:53:44,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:53:44,909 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 14:53:44,912 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 14:53:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 14:53:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 14:53:44,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 14:53:44,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 14:53:44,982 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 14:53:44,984 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 14:53:47,984 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L4665: havoc calculate_output3_#t~ret11#1; [2025-03-16 14:53:47,984 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L1696: havoc calculate_output_#t~ret9#1; [2025-03-16 14:53:47,984 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L3175: havoc calculate_output2_#t~ret10#1; [2025-03-16 14:53:48,131 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2025-03-16 14:53:48,131 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 14:53:48,160 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 14:53:48,160 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 14:53:48,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:53:48 BoogieIcfgContainer [2025-03-16 14:53:48,161 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 14:53:48,166 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 14:53:48,166 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 14:53:48,169 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 14:53:48,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 02:53:43" (1/3) ... [2025-03-16 14:53:48,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732f04d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 02:53:48, skipping insertion in model container [2025-03-16 14:53:48,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 02:53:44" (2/3) ... [2025-03-16 14:53:48,170 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732f04d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 02:53:48, skipping insertion in model container [2025-03-16 14:53:48,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:53:48" (3/3) ... [2025-03-16 14:53:48,171 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem12_label12.c [2025-03-16 14:53:48,182 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 14:53:48,183 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem12_label12.c that has 1 procedures, 757 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 14:53:48,248 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 14:53:48,257 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;@127efc8d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 14:53:48,258 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 14:53:48,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9907284768211921) internal successors, (1503), 756 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-16 14:53:48,270 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:53:48,270 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:48,270 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:53:48,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:53:48,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1322728740, now seen corresponding path program 1 times [2025-03-16 14:53:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:53:48,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105133983] [2025-03-16 14:53:48,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:53:48,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:53:48,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-16 14:53:48,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-16 14:53:48,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:53:48,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:53:48,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:53:48,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:53:48,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105133983] [2025-03-16 14:53:48,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105133983] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:53:48,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:53:48,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 14:53:48,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529184048] [2025-03-16 14:53:48,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:53:48,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 14:53:48,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:53:48,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 14:53:48,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 14:53:48,424 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9907284768211921) internal successors, (1503), 756 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:53:48,487 INFO L93 Difference]: Finished difference Result 1513 states and 3005 transitions. [2025-03-16 14:53:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 14:53:48,489 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-03-16 14:53:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:53:48,498 INFO L225 Difference]: With dead ends: 1513 [2025-03-16 14:53:48,498 INFO L226 Difference]: Without dead ends: 754 [2025-03-16 14:53:48,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 14:53:48,507 INFO L435 NwaCegarLoop]: 1441 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 14:53:48,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 14:53:48,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2025-03-16 14:53:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2025-03-16 14:53:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 1.9096945551128819) internal successors, (1438), 753 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1438 transitions. [2025-03-16 14:53:48,561 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1438 transitions. Word has length 57 [2025-03-16 14:53:48,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:53:48,561 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1438 transitions. [2025-03-16 14:53:48,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1438 transitions. [2025-03-16 14:53:48,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-03-16 14:53:48,563 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:53:48,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:48,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 14:53:48,563 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:53:48,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:53:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1374304156, now seen corresponding path program 1 times [2025-03-16 14:53:48,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:53:48,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437124913] [2025-03-16 14:53:48,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:53:48,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:53:48,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 57 statements into 1 equivalence classes. [2025-03-16 14:53:48,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 57 of 57 statements. [2025-03-16 14:53:48,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:53:48,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:53:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:53:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:53:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437124913] [2025-03-16 14:53:48,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437124913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:53:48,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:53:48,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:53:48,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140224600] [2025-03-16 14:53:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:53:48,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:53:48,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:53:48,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:53:48,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:53:48,890 INFO L87 Difference]: Start difference. First operand 754 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:53,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:53:53,322 INFO L93 Difference]: Finished difference Result 3017 states and 5755 transitions. [2025-03-16 14:53:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-16 14:53:53,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2025-03-16 14:53:53,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:53:53,330 INFO L225 Difference]: With dead ends: 3017 [2025-03-16 14:53:53,331 INFO L226 Difference]: Without dead ends: 2264 [2025-03-16 14:53:53,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:53:53,332 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 2327 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 5208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1596 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-03-16 14:53:53,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 198 Invalid, 5208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1596 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2025-03-16 14:53:53,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2025-03-16 14:53:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2256. [2025-03-16 14:53:53,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.5352549889135254) internal successors, (3462), 2255 states have internal predecessors, (3462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:53,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 3462 transitions. [2025-03-16 14:53:53,374 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 3462 transitions. Word has length 57 [2025-03-16 14:53:53,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:53:53,374 INFO L471 AbstractCegarLoop]: Abstraction has 2256 states and 3462 transitions. [2025-03-16 14:53:53,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 3462 transitions. [2025-03-16 14:53:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2025-03-16 14:53:53,378 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:53:53,378 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:53:53,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 14:53:53,379 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:53:53,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:53:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1556428631, now seen corresponding path program 1 times [2025-03-16 14:53:53,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:53:53,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589721188] [2025-03-16 14:53:53,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:53:53,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:53:53,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 197 statements into 1 equivalence classes. [2025-03-16 14:53:53,414 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 197 of 197 statements. [2025-03-16 14:53:53,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:53:53,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:53:53,786 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-16 14:53:53,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:53:53,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589721188] [2025-03-16 14:53:53,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589721188] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:53:53,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:53:53,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:53:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396022436] [2025-03-16 14:53:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:53:53,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 14:53:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:53:53,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 14:53:53,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:53:53,788 INFO L87 Difference]: Start difference. First operand 2256 states and 3462 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:53:56,786 INFO L93 Difference]: Finished difference Result 6052 states and 9664 transitions. [2025-03-16 14:53:56,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 14:53:56,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2025-03-16 14:53:56,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:53:56,798 INFO L225 Difference]: With dead ends: 6052 [2025-03-16 14:53:56,798 INFO L226 Difference]: Without dead ends: 3760 [2025-03-16 14:53:56,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 14:53:56,802 INFO L435 NwaCegarLoop]: 694 mSDtfsCounter, 690 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:53:56,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 712 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-16 14:53:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3760 states. [2025-03-16 14:53:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3760 to 3758. [2025-03-16 14:53:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3758 states, 3757 states have (on average 1.3412297045515038) internal successors, (5039), 3757 states have internal predecessors, (5039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3758 states to 3758 states and 5039 transitions. [2025-03-16 14:53:56,860 INFO L78 Accepts]: Start accepts. Automaton has 3758 states and 5039 transitions. Word has length 197 [2025-03-16 14:53:56,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:53:56,861 INFO L471 AbstractCegarLoop]: Abstraction has 3758 states and 5039 transitions. [2025-03-16 14:53:56,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:56,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3758 states and 5039 transitions. [2025-03-16 14:53:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2025-03-16 14:53:56,864 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:53:56,865 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:56,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 14:53:56,865 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:53:56,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:53:56,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2137349384, now seen corresponding path program 1 times [2025-03-16 14:53:56,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:53:56,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847460147] [2025-03-16 14:53:56,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:53:56,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:53:56,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 267 statements into 1 equivalence classes. [2025-03-16 14:53:56,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 267 of 267 statements. [2025-03-16 14:53:56,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:53:56,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:53:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 111 proven. 54 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-03-16 14:53:57,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:53:57,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847460147] [2025-03-16 14:53:57,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847460147] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:53:57,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318220793] [2025-03-16 14:53:57,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:53:57,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:53:57,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:53:57,251 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 14:53:57,253 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 14:53:57,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 267 statements into 1 equivalence classes. [2025-03-16 14:53:57,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 267 of 267 statements. [2025-03-16 14:53:57,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:53:57,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:53:57,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:53:57,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:53:57,629 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-16 14:53:57,631 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:53:57,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318220793] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:53:57,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:53:57,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2025-03-16 14:53:57,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642012934] [2025-03-16 14:53:57,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:53:57,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:53:57,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:53:57,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:53:57,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:53:57,632 INFO L87 Difference]: Start difference. First operand 3758 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:59,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:53:59,573 INFO L93 Difference]: Finished difference Result 10519 states and 14358 transitions. [2025-03-16 14:53:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:53:59,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2025-03-16 14:53:59,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:53:59,590 INFO L225 Difference]: With dead ends: 10519 [2025-03-16 14:53:59,590 INFO L226 Difference]: Without dead ends: 6762 [2025-03-16 14:53:59,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:53:59,595 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:53:59,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 485 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 14:53:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6762 states. [2025-03-16 14:53:59,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6762 to 6762. [2025-03-16 14:53:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6762 states, 6761 states have (on average 1.2517379085934033) internal successors, (8463), 6761 states have internal predecessors, (8463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 8463 transitions. [2025-03-16 14:53:59,679 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 8463 transitions. Word has length 267 [2025-03-16 14:53:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:53:59,679 INFO L471 AbstractCegarLoop]: Abstraction has 6762 states and 8463 transitions. [2025-03-16 14:53:59,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:53:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 8463 transitions. [2025-03-16 14:53:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2025-03-16 14:53:59,682 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:53:59,682 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:59,689 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 14:53:59,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:53:59,884 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:53:59,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:53:59,885 INFO L85 PathProgramCache]: Analyzing trace with hash 797772504, now seen corresponding path program 1 times [2025-03-16 14:53:59,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:53:59,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732762946] [2025-03-16 14:53:59,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:53:59,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:53:59,904 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 280 statements into 1 equivalence classes. [2025-03-16 14:53:59,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 280 of 280 statements. [2025-03-16 14:53:59,920 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:53:59,920 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 111 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-16 14:54:00,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:00,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732762946] [2025-03-16 14:54:00,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732762946] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:54:00,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381313719] [2025-03-16 14:54:00,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:00,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:54:00,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:54:00,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:54:00,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-16 14:54:00,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 280 statements into 1 equivalence classes. [2025-03-16 14:54:00,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 280 of 280 statements. [2025-03-16 14:54:00,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:00,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:00,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:54:00,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:54:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:54:00,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:54:00,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381313719] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:00,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:54:00,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-16 14:54:00,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610063251] [2025-03-16 14:54:00,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:00,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:00,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:00,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:54:00,436 INFO L87 Difference]: Start difference. First operand 6762 states and 8463 transitions. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:02,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:02,421 INFO L93 Difference]: Finished difference Result 16527 states and 21455 transitions. [2025-03-16 14:54:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:02,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 280 [2025-03-16 14:54:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:02,444 INFO L225 Difference]: With dead ends: 16527 [2025-03-16 14:54:02,444 INFO L226 Difference]: Without dead ends: 9766 [2025-03-16 14:54:02,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:54:02,456 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 907 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:02,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 308 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 14:54:02,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9766 states. [2025-03-16 14:54:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9766 to 9766. [2025-03-16 14:54:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9766 states, 9765 states have (on average 1.2463901689708141) internal successors, (12171), 9765 states have internal predecessors, (12171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9766 states to 9766 states and 12171 transitions. [2025-03-16 14:54:02,633 INFO L78 Accepts]: Start accepts. Automaton has 9766 states and 12171 transitions. Word has length 280 [2025-03-16 14:54:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:02,635 INFO L471 AbstractCegarLoop]: Abstraction has 9766 states and 12171 transitions. [2025-03-16 14:54:02,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9766 states and 12171 transitions. [2025-03-16 14:54:02,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2025-03-16 14:54:02,639 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:02,639 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:02,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-16 14:54:02,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:54:02,840 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:02,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:02,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1060727533, now seen corresponding path program 1 times [2025-03-16 14:54:02,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:02,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988023604] [2025-03-16 14:54:02,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:02,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:02,867 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 297 statements into 1 equivalence classes. [2025-03-16 14:54:02,888 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 297 of 297 statements. [2025-03-16 14:54:02,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:02,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-16 14:54:03,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:03,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988023604] [2025-03-16 14:54:03,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988023604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:03,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:54:03,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:54:03,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659723467] [2025-03-16 14:54:03,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:03,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:03,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:03,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:03,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:54:03,031 INFO L87 Difference]: Start difference. First operand 9766 states and 12171 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:05,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:05,216 INFO L93 Difference]: Finished difference Result 27041 states and 34235 transitions. [2025-03-16 14:54:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:05,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 297 [2025-03-16 14:54:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:05,248 INFO L225 Difference]: With dead ends: 27041 [2025-03-16 14:54:05,248 INFO L226 Difference]: Without dead ends: 17276 [2025-03-16 14:54:05,258 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 14:54:05,259 INFO L435 NwaCegarLoop]: 1316 mSDtfsCounter, 700 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:05,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1323 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2025-03-16 14:54:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17276 states. [2025-03-16 14:54:05,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17276 to 15774. [2025-03-16 14:54:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 1.2524567298548153) internal successors, (19755), 15773 states have internal predecessors, (19755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 19755 transitions. [2025-03-16 14:54:05,435 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 19755 transitions. Word has length 297 [2025-03-16 14:54:05,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:05,435 INFO L471 AbstractCegarLoop]: Abstraction has 15774 states and 19755 transitions. [2025-03-16 14:54:05,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:05,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 19755 transitions. [2025-03-16 14:54:05,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2025-03-16 14:54:05,439 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:05,439 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:05,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 14:54:05,439 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:05,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1858387040, now seen corresponding path program 1 times [2025-03-16 14:54:05,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:05,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799293058] [2025-03-16 14:54:05,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:05,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:05,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 346 statements into 1 equivalence classes. [2025-03-16 14:54:05,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 346 of 346 statements. [2025-03-16 14:54:05,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:05,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 167 proven. 108 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2025-03-16 14:54:05,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:05,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799293058] [2025-03-16 14:54:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799293058] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:54:05,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819837873] [2025-03-16 14:54:05,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:05,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:54:05,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:54:05,789 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:54:05,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-16 14:54:05,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 346 statements into 1 equivalence classes. [2025-03-16 14:54:05,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 346 of 346 statements. [2025-03-16 14:54:05,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:05,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:05,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:54:05,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:54:05,977 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-16 14:54:05,978 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:54:05,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819837873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:05,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:54:05,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-03-16 14:54:05,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376803321] [2025-03-16 14:54:05,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:05,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:05,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:05,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:05,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:54:05,984 INFO L87 Difference]: Start difference. First operand 15774 states and 19755 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:07,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:07,959 INFO L93 Difference]: Finished difference Result 38306 states and 48289 transitions. [2025-03-16 14:54:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:07,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 346 [2025-03-16 14:54:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:07,996 INFO L225 Difference]: With dead ends: 38306 [2025-03-16 14:54:07,996 INFO L226 Difference]: Without dead ends: 22533 [2025-03-16 14:54:08,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-16 14:54:08,012 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 791 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 843 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 843 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:08,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 237 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [843 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 14:54:08,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2025-03-16 14:54:08,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 22533. [2025-03-16 14:54:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.2050417184448783) internal successors, (27152), 22532 states have internal predecessors, (27152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 27152 transitions. [2025-03-16 14:54:08,265 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 27152 transitions. Word has length 346 [2025-03-16 14:54:08,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:08,266 INFO L471 AbstractCegarLoop]: Abstraction has 22533 states and 27152 transitions. [2025-03-16 14:54:08,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:08,266 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 27152 transitions. [2025-03-16 14:54:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2025-03-16 14:54:08,269 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:08,270 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:08,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-16 14:54:08,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:54:08,470 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:08,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:08,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1840022332, now seen corresponding path program 1 times [2025-03-16 14:54:08,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:08,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677315611] [2025-03-16 14:54:08,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:08,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:08,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 351 statements into 1 equivalence classes. [2025-03-16 14:54:08,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 351 of 351 statements. [2025-03-16 14:54:08,505 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:08,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:08,599 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-16 14:54:08,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:08,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677315611] [2025-03-16 14:54:08,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677315611] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:08,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:54:08,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:54:08,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441976800] [2025-03-16 14:54:08,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:08,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:08,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:08,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:08,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:54:08,602 INFO L87 Difference]: Start difference. First operand 22533 states and 27152 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:10,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:10,617 INFO L93 Difference]: Finished difference Result 45065 states and 54303 transitions. [2025-03-16 14:54:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:10,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2025-03-16 14:54:10,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:10,653 INFO L225 Difference]: With dead ends: 45065 [2025-03-16 14:54:10,654 INFO L226 Difference]: Without dead ends: 22533 [2025-03-16 14:54:10,734 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 14:54:10,735 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 736 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:10,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 246 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 14:54:10,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22533 states. [2025-03-16 14:54:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22533 to 22533. [2025-03-16 14:54:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.1919936090892953) internal successors, (26858), 22532 states have internal predecessors, (26858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 26858 transitions. [2025-03-16 14:54:10,894 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 26858 transitions. Word has length 351 [2025-03-16 14:54:10,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:10,895 INFO L471 AbstractCegarLoop]: Abstraction has 22533 states and 26858 transitions. [2025-03-16 14:54:10,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 26858 transitions. [2025-03-16 14:54:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2025-03-16 14:54:10,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:10,900 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:10,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 14:54:10,900 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:10,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1549333609, now seen corresponding path program 1 times [2025-03-16 14:54:10,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:10,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457203833] [2025-03-16 14:54:10,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:10,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 362 statements into 1 equivalence classes. [2025-03-16 14:54:10,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 362 of 362 statements. [2025-03-16 14:54:10,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:10,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2025-03-16 14:54:11,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457203833] [2025-03-16 14:54:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457203833] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:11,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:54:11,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:54:11,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296867224] [2025-03-16 14:54:11,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:11,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:11,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:11,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:11,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:54:11,062 INFO L87 Difference]: Start difference. First operand 22533 states and 26858 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:13,051 INFO L93 Difference]: Finished difference Result 54077 states and 64018 transitions. [2025-03-16 14:54:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:13,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2025-03-16 14:54:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:13,093 INFO L225 Difference]: With dead ends: 54077 [2025-03-16 14:54:13,093 INFO L226 Difference]: Without dead ends: 31545 [2025-03-16 14:54:13,107 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 14:54:13,109 INFO L435 NwaCegarLoop]: 1288 mSDtfsCounter, 727 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:13,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1295 Invalid, 2673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 14:54:13,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31545 states. [2025-03-16 14:54:13,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31545 to 30794. [2025-03-16 14:54:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30794 states, 30793 states have (on average 1.1437014905985126) internal successors, (35218), 30793 states have internal predecessors, (35218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30794 states to 30794 states and 35218 transitions. [2025-03-16 14:54:13,476 INFO L78 Accepts]: Start accepts. Automaton has 30794 states and 35218 transitions. Word has length 362 [2025-03-16 14:54:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:13,476 INFO L471 AbstractCegarLoop]: Abstraction has 30794 states and 35218 transitions. [2025-03-16 14:54:13,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 30794 states and 35218 transitions. [2025-03-16 14:54:13,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2025-03-16 14:54:13,481 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:13,481 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:13,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 14:54:13,482 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:13,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:13,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1894999186, now seen corresponding path program 1 times [2025-03-16 14:54:13,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:13,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032153302] [2025-03-16 14:54:13,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:13,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:13,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 371 statements into 1 equivalence classes. [2025-03-16 14:54:13,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 371 of 371 statements. [2025-03-16 14:54:13,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:13,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-03-16 14:54:13,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:13,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032153302] [2025-03-16 14:54:13,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032153302] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:13,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:54:13,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:54:13,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318331275] [2025-03-16 14:54:13,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:13,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:13,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:13,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:13,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:54:13,608 INFO L87 Difference]: Start difference. First operand 30794 states and 35218 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:15,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:15,535 INFO L93 Difference]: Finished difference Result 63840 states and 72725 transitions. [2025-03-16 14:54:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2025-03-16 14:54:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:15,668 INFO L225 Difference]: With dead ends: 63840 [2025-03-16 14:54:15,668 INFO L226 Difference]: Without dead ends: 32296 [2025-03-16 14:54:15,677 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 14:54:15,677 INFO L435 NwaCegarLoop]: 1028 mSDtfsCounter, 819 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:15,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 1034 Invalid, 2756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 14:54:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32296 states. [2025-03-16 14:54:15,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32296 to 30794. [2025-03-16 14:54:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30794 states, 30793 states have (on average 1.1185659078361965) internal successors, (34444), 30793 states have internal predecessors, (34444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30794 states to 30794 states and 34444 transitions. [2025-03-16 14:54:15,895 INFO L78 Accepts]: Start accepts. Automaton has 30794 states and 34444 transitions. Word has length 371 [2025-03-16 14:54:15,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:15,895 INFO L471 AbstractCegarLoop]: Abstraction has 30794 states and 34444 transitions. [2025-03-16 14:54:15,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 30794 states and 34444 transitions. [2025-03-16 14:54:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2025-03-16 14:54:15,899 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:15,899 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:15,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 14:54:15,899 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:15,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash 404705237, now seen corresponding path program 1 times [2025-03-16 14:54:15,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:15,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15003953] [2025-03-16 14:54:15,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:15,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:15,919 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-03-16 14:54:15,938 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-03-16 14:54:15,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:15,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 351 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 14:54:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15003953] [2025-03-16 14:54:16,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15003953] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:54:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188744083] [2025-03-16 14:54:16,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:16,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:54:16,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:54:16,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:54:16,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-16 14:54:16,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-03-16 14:54:16,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-03-16 14:54:16,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:16,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:16,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 14:54:16,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:54:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 248 proven. 56 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2025-03-16 14:54:16,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 14:54:16,965 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-03-16 14:54:16,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188744083] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-16 14:54:16,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-03-16 14:54:16,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 8 [2025-03-16 14:54:16,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769333971] [2025-03-16 14:54:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:16,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:16,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:16,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-16 14:54:16,968 INFO L87 Difference]: Start difference. First operand 30794 states and 34444 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:19,333 INFO L93 Difference]: Finished difference Result 79611 states and 89833 transitions. [2025-03-16 14:54:19,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:19,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 388 [2025-03-16 14:54:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:19,385 INFO L225 Difference]: With dead ends: 79611 [2025-03-16 14:54:19,385 INFO L226 Difference]: Without dead ends: 49569 [2025-03-16 14:54:19,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 773 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-03-16 14:54:19,407 INFO L435 NwaCegarLoop]: 998 mSDtfsCounter, 767 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:19,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1005 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-16 14:54:19,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49569 states. [2025-03-16 14:54:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49569 to 48818. [2025-03-16 14:54:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48818 states, 48817 states have (on average 1.1272712374787472) internal successors, (55030), 48817 states have internal predecessors, (55030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48818 states to 48818 states and 55030 transitions. [2025-03-16 14:54:19,844 INFO L78 Accepts]: Start accepts. Automaton has 48818 states and 55030 transitions. Word has length 388 [2025-03-16 14:54:19,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:19,845 INFO L471 AbstractCegarLoop]: Abstraction has 48818 states and 55030 transitions. [2025-03-16 14:54:19,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 48818 states and 55030 transitions. [2025-03-16 14:54:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 526 [2025-03-16 14:54:19,855 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:19,855 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:54:19,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-16 14:54:20,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:54:20,056 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:20,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:20,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1068329621, now seen corresponding path program 1 times [2025-03-16 14:54:20,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:20,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147513449] [2025-03-16 14:54:20,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:20,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:20,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 525 statements into 1 equivalence classes. [2025-03-16 14:54:20,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 525 of 525 statements. [2025-03-16 14:54:20,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:20,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:20,237 INFO L134 CoverageAnalysis]: Checked inductivity of 797 backedges. 625 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2025-03-16 14:54:20,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:20,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147513449] [2025-03-16 14:54:20,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147513449] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:20,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:54:20,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:54:20,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896356527] [2025-03-16 14:54:20,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:20,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:20,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:20,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:20,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:54:20,240 INFO L87 Difference]: Start difference. First operand 48818 states and 55030 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:22,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:22,739 INFO L93 Difference]: Finished difference Result 125422 states and 142132 transitions. [2025-03-16 14:54:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:22,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 525 [2025-03-16 14:54:22,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:22,829 INFO L225 Difference]: With dead ends: 125422 [2025-03-16 14:54:22,829 INFO L226 Difference]: Without dead ends: 77356 [2025-03-16 14:54:22,858 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 14:54:22,859 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 653 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:22,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 463 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2025-03-16 14:54:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77356 states. [2025-03-16 14:54:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77356 to 75854. [2025-03-16 14:54:23,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75854 states, 75853 states have (on average 1.10918487073682) internal successors, (84135), 75853 states have internal predecessors, (84135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75854 states to 75854 states and 84135 transitions. [2025-03-16 14:54:23,684 INFO L78 Accepts]: Start accepts. Automaton has 75854 states and 84135 transitions. Word has length 525 [2025-03-16 14:54:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:23,685 INFO L471 AbstractCegarLoop]: Abstraction has 75854 states and 84135 transitions. [2025-03-16 14:54:23,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 75854 states and 84135 transitions. [2025-03-16 14:54:23,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2025-03-16 14:54:23,701 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:23,701 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:23,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 14:54:23,701 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:23,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:23,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1382688121, now seen corresponding path program 1 times [2025-03-16 14:54:23,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:23,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654511494] [2025-03-16 14:54:23,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:23,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:23,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 560 statements into 1 equivalence classes. [2025-03-16 14:54:23,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 560 of 560 statements. [2025-03-16 14:54:23,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:23,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 367 proven. 372 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2025-03-16 14:54:24,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:24,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654511494] [2025-03-16 14:54:24,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654511494] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:54:24,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013001753] [2025-03-16 14:54:24,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:24,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:54:24,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:54:24,278 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:54:24,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-16 14:54:24,329 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 560 statements into 1 equivalence classes. [2025-03-16 14:54:24,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 560 of 560 statements. [2025-03-16 14:54:24,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:24,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:24,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:54:24,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:54:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2025-03-16 14:54:24,472 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:54:24,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013001753] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:24,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:54:24,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2025-03-16 14:54:24,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226660599] [2025-03-16 14:54:24,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:24,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:24,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:24,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:24,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:54:24,474 INFO L87 Difference]: Start difference. First operand 75854 states and 84135 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:26,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:26,774 INFO L93 Difference]: Finished difference Result 177241 states and 197003 transitions. [2025-03-16 14:54:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 560 [2025-03-16 14:54:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:26,884 INFO L225 Difference]: With dead ends: 177241 [2025-03-16 14:54:26,884 INFO L226 Difference]: Without dead ends: 102139 [2025-03-16 14:54:26,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:54:26,934 INFO L435 NwaCegarLoop]: 1272 mSDtfsCounter, 711 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2441 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:26,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1279 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2441 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-03-16 14:54:27,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102139 states. [2025-03-16 14:54:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102139 to 98384. [2025-03-16 14:54:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98384 states, 98383 states have (on average 1.107305123852698) internal successors, (108940), 98383 states have internal predecessors, (108940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:27,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98384 states to 98384 states and 108940 transitions. [2025-03-16 14:54:27,861 INFO L78 Accepts]: Start accepts. Automaton has 98384 states and 108940 transitions. Word has length 560 [2025-03-16 14:54:27,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:27,862 INFO L471 AbstractCegarLoop]: Abstraction has 98384 states and 108940 transitions. [2025-03-16 14:54:27,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:27,862 INFO L276 IsEmpty]: Start isEmpty. Operand 98384 states and 108940 transitions. [2025-03-16 14:54:28,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2025-03-16 14:54:28,006 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:28,007 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:28,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-16 14:54:28,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-16 14:54:28,208 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:28,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash 535246472, now seen corresponding path program 1 times [2025-03-16 14:54:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11112732] [2025-03-16 14:54:28,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:28,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:28,236 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 573 statements into 1 equivalence classes. [2025-03-16 14:54:28,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 573 of 573 statements. [2025-03-16 14:54:28,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:28,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:28,354 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2025-03-16 14:54:28,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11112732] [2025-03-16 14:54:28,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11112732] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:28,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 14:54:28,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 14:54:28,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367260901] [2025-03-16 14:54:28,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:28,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:28,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:28,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 14:54:28,356 INFO L87 Difference]: Start difference. First operand 98384 states and 108940 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:30,591 INFO L93 Difference]: Finished difference Result 196016 states and 217123 transitions. [2025-03-16 14:54:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:30,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 573 [2025-03-16 14:54:30,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:30,701 INFO L225 Difference]: With dead ends: 196016 [2025-03-16 14:54:30,701 INFO L226 Difference]: Without dead ends: 98384 [2025-03-16 14:54:30,749 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 14:54:30,749 INFO L435 NwaCegarLoop]: 1113 mSDtfsCounter, 813 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:30,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1120 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-16 14:54:30,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98384 states. [2025-03-16 14:54:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98384 to 98384. [2025-03-16 14:54:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98384 states, 98383 states have (on average 1.0927700923940111) internal successors, (107510), 98383 states have internal predecessors, (107510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98384 states to 98384 states and 107510 transitions. [2025-03-16 14:54:31,913 INFO L78 Accepts]: Start accepts. Automaton has 98384 states and 107510 transitions. Word has length 573 [2025-03-16 14:54:31,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:31,914 INFO L471 AbstractCegarLoop]: Abstraction has 98384 states and 107510 transitions. [2025-03-16 14:54:31,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:31,914 INFO L276 IsEmpty]: Start isEmpty. Operand 98384 states and 107510 transitions. [2025-03-16 14:54:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2025-03-16 14:54:31,941 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 14:54:31,941 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:31,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 14:54:31,941 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 14:54:31,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 14:54:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash 277131409, now seen corresponding path program 1 times [2025-03-16 14:54:31,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 14:54:31,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254582945] [2025-03-16 14:54:31,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:31,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 14:54:31,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 647 statements into 1 equivalence classes. [2025-03-16 14:54:32,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 647 of 647 statements. [2025-03-16 14:54:32,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:32,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 871 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2025-03-16 14:54:32,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 14:54:32,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254582945] [2025-03-16 14:54:32,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254582945] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 14:54:32,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724949788] [2025-03-16 14:54:32,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 14:54:32,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 14:54:32,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 14:54:32,652 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 14:54:32,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-16 14:54:32,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 647 statements into 1 equivalence classes. [2025-03-16 14:54:32,827 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 647 of 647 statements. [2025-03-16 14:54:32,827 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 14:54:32,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 14:54:32,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-03-16 14:54:32,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 14:54:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2025-03-16 14:54:33,422 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 14:54:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724949788] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 14:54:33,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 14:54:33,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2025-03-16 14:54:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620489274] [2025-03-16 14:54:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 14:54:33,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 14:54:33,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 14:54:33,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 14:54:33,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:54:33,423 INFO L87 Difference]: Start difference. First operand 98384 states and 107510 transitions. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:35,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 14:54:35,549 INFO L93 Difference]: Finished difference Result 196014 states and 214262 transitions. [2025-03-16 14:54:35,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 14:54:35,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 647 [2025-03-16 14:54:35,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 14:54:35,551 INFO L225 Difference]: With dead ends: 196014 [2025-03-16 14:54:35,551 INFO L226 Difference]: Without dead ends: 0 [2025-03-16 14:54:35,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-03-16 14:54:35,622 INFO L435 NwaCegarLoop]: 1176 mSDtfsCounter, 612 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-16 14:54:35,622 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1182 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-16 14:54:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-16 14:54:35,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-16 14:54:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-16 14:54:35,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 647 [2025-03-16 14:54:35,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 14:54:35,623 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-16 14:54:35,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 14:54:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-16 14:54:35,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-16 14:54:35,626 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-16 14:54:35,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-16 14:54:35,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-16 14:54:35,833 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 14:54:35,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-16 14:54:37,426 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-16 14:54:37,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.03 02:54:37 BoogieIcfgContainer [2025-03-16 14:54:37,441 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-16 14:54:37,441 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-16 14:54:37,441 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-16 14:54:37,441 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-16 14:54:37,442 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 02:53:48" (3/4) ... [2025-03-16 14:54:37,443 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-16 14:54:37,479 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-16 14:54:37,483 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-16 14:54:37,487 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-16 14:54:37,490 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-16 14:54:37,681 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-16 14:54:37,681 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-16 14:54:37,681 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-16 14:54:37,682 INFO L158 Benchmark]: Toolchain (without parser) took 54460.03ms. Allocated memory was 167.8MB in the beginning and 1.1GB in the end (delta: 922.7MB). Free memory was 109.7MB in the beginning and 541.4MB in the end (delta: -431.7MB). Peak memory consumption was 483.6MB. Max. memory is 16.1GB. [2025-03-16 14:54:37,682 INFO L158 Benchmark]: CDTParser took 0.81ms. Allocated memory is still 201.3MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-16 14:54:37,682 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1016.04ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 96.9MB in the end (delta: 12.8MB). Peak memory consumption was 97.5MB. Max. memory is 16.1GB. [2025-03-16 14:54:37,682 INFO L158 Benchmark]: Boogie Procedure Inliner took 259.05ms. Allocated memory is still 167.8MB. Free memory was 96.9MB in the beginning and 59.7MB in the end (delta: 37.2MB). Peak memory consumption was 76.9MB. Max. memory is 16.1GB. [2025-03-16 14:54:37,683 INFO L158 Benchmark]: Boogie Preprocessor took 383.08ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 59.7MB in the beginning and 288.3MB in the end (delta: -228.6MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. [2025-03-16 14:54:37,684 INFO L158 Benchmark]: IcfgBuilder took 3277.76ms. Allocated memory was 411.0MB in the beginning and 822.1MB in the end (delta: 411.0MB). Free memory was 288.3MB in the beginning and 577.2MB in the end (delta: -289.0MB). Peak memory consumption was 230.4MB. Max. memory is 16.1GB. [2025-03-16 14:54:37,684 INFO L158 Benchmark]: TraceAbstraction took 49274.66ms. Allocated memory was 822.1MB in the beginning and 1.1GB in the end (delta: 268.4MB). Free memory was 577.2MB in the beginning and 600.0MB in the end (delta: -22.8MB). Peak memory consumption was 734.1MB. Max. memory is 16.1GB. [2025-03-16 14:54:37,684 INFO L158 Benchmark]: Witness Printer took 239.72ms. Allocated memory is still 1.1GB. Free memory was 600.0MB in the beginning and 541.4MB in the end (delta: 58.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2025-03-16 14:54:37,685 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81ms. Allocated memory is still 201.3MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1016.04ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 96.9MB in the end (delta: 12.8MB). Peak memory consumption was 97.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 259.05ms. Allocated memory is still 167.8MB. Free memory was 96.9MB in the beginning and 59.7MB in the end (delta: 37.2MB). Peak memory consumption was 76.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 383.08ms. Allocated memory was 167.8MB in the beginning and 411.0MB in the end (delta: 243.3MB). Free memory was 59.7MB in the beginning and 288.3MB in the end (delta: -228.6MB). Peak memory consumption was 95.9MB. Max. memory is 16.1GB. * IcfgBuilder took 3277.76ms. Allocated memory was 411.0MB in the beginning and 822.1MB in the end (delta: 411.0MB). Free memory was 288.3MB in the beginning and 577.2MB in the end (delta: -289.0MB). Peak memory consumption was 230.4MB. Max. memory is 16.1GB. * TraceAbstraction took 49274.66ms. Allocated memory was 822.1MB in the beginning and 1.1GB in the end (delta: 268.4MB). Free memory was 577.2MB in the beginning and 600.0MB in the end (delta: -22.8MB). Peak memory consumption was 734.1MB. Max. memory is 16.1GB. * Witness Printer took 239.72ms. Allocated memory is still 1.1GB. Free memory was 600.0MB in the beginning and 541.4MB in the end (delta: 58.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 196]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 757 locations, 1503 edges, 1 error locations. Started 1 CEGAR loops. OverallTime: 47.6s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.2s, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11922 SdHoareTripleChecker+Valid, 30.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11922 mSDsluCounter, 12328 SdHoareTripleChecker+Invalid, 24.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 9394 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34183 IncrementalHoareTripleChecker+Invalid, 43577 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9394 mSolverCounterUnsat, 12216 mSDtfsCounter, 34183 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2921 GetRequests, 2885 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98384occurred in iteration=13, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 15 MinimizatonAttempts, 9773 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 7766 NumberOfCodeBlocks, 7766 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 8132 ConstructedInterpolants, 0 QuantifiedInterpolants, 21676 SizeOfPredicates, 1 NumberOfNonLiveVariables, 3268 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 22 InterpolantComputations, 15 PerfectInterpolantSequences, 8850/9566 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4828]: Location Invariant Derived location invariant: ((((((((((((a2 <= 170) && (a5 == 4)) && (((long long) a17 + 124) <= 0)) || ((a2 <= 189) && (a24 != 14))) || ((14 <= a7) && (a24 == 13))) || (((a24 <= 14) && (14 <= a7)) && (a5 <= 5))) || (((a7 <= 13) && (0 <= ((long long) a17 + 107))) && (a5 <= 5))) || ((a24 == 13) && (a7 <= 12))) || ((6 <= a5) && (a2 <= 189))) || ((a5 <= 4) && (190 <= a2))) || ((0 <= ((long long) a17 + 107)) && (a24 == 13))) || ((a5 <= 5) && (a7 <= 12))) RESULT: Ultimate proved your program to be correct! [2025-03-16 14:54:37,703 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE