./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/max-2-u.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/array-multidimensional/max-2-u.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 d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 13:45:39,768 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 13:45:39,823 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 13:45:39,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 13:45:39,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 13:45:39,847 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 13:45:39,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 13:45:39,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 13:45:39,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 13:45:39,849 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 13:45:39,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 13:45:39,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 13:45:39,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 13:45:39,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 13:45:39,850 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 13:45:39,851 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 13:45:39,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 13:45:39,851 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 13:45:39,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 13:45:39,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 13:45:39,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 13:45:39,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 13:45:39,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 13:45:39,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 13:45:39,852 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 13:45:39,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 13:45:39,852 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 13:45:39,852 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 13:45:39,852 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 13:45:39,852 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 13:45:39,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 13:45:39,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:45:39,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 13:45:39,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 13:45:39,853 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 -> d56d1653edfb1a7b1c72e82d390b1b74d1df9114797a2f1426eb2285f6c4408f [2025-03-16 13:45:40,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 13:45:40,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 13:45:40,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 13:45:40,075 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 13:45:40,076 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 13:45:40,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/max-2-u.c [2025-03-16 13:45:41,197 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7168e79fb/90977e96fee4400fa889486adadedcfd/FLAGa88e656ac [2025-03-16 13:45:41,406 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 13:45:41,407 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/max-2-u.c [2025-03-16 13:45:41,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7168e79fb/90977e96fee4400fa889486adadedcfd/FLAGa88e656ac [2025-03-16 13:45:41,762 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7168e79fb/90977e96fee4400fa889486adadedcfd [2025-03-16 13:45:41,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 13:45:41,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 13:45:41,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 13:45:41,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 13:45:41,768 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 13:45:41,769 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61706ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41, skipping insertion in model container [2025-03-16 13:45:41,769 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 13:45:41,874 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/array-multidimensional/max-2-u.c[319,332] [2025-03-16 13:45:41,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:45:41,895 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 13:45:41,903 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/array-multidimensional/max-2-u.c[319,332] [2025-03-16 13:45:41,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 13:45:41,921 INFO L204 MainTranslator]: Completed translation [2025-03-16 13:45:41,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41 WrapperNode [2025-03-16 13:45:41,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 13:45:41,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 13:45:41,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 13:45:41,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 13:45:41,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,933 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,945 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2025-03-16 13:45:41,946 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 13:45:41,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 13:45:41,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 13:45:41,947 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 13:45:41,951 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,956 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,963 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-16 13:45:41,964 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,964 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,967 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 13:45:41,969 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 13:45:41,970 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 13:45:41,970 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 13:45:41,972 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (1/1) ... [2025-03-16 13:45:41,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 13:45:41,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:45:41,998 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 13:45:42,006 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 13:45:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 13:45:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 13:45:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-16 13:45:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-16 13:45:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-16 13:45:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-16 13:45:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 13:45:42,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 13:45:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-16 13:45:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-16 13:45:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-16 13:45:42,063 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 13:45:42,065 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 13:45:42,177 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L18: call ULTIMATE.dealloc(main_~#A~0#1.base, main_~#A~0#1.offset);havoc main_~#A~0#1.base, main_~#A~0#1.offset; [2025-03-16 13:45:42,182 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-03-16 13:45:42,183 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 13:45:42,188 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 13:45:42,189 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 13:45:42,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:45:42 BoogieIcfgContainer [2025-03-16 13:45:42,189 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 13:45:42,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 13:45:42,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 13:45:42,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 13:45:42,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 01:45:41" (1/3) ... [2025-03-16 13:45:42,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d054341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:45:42, skipping insertion in model container [2025-03-16 13:45:42,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 01:45:41" (2/3) ... [2025-03-16 13:45:42,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d054341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 01:45:42, skipping insertion in model container [2025-03-16 13:45:42,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 01:45:42" (3/3) ... [2025-03-16 13:45:42,197 INFO L128 eAbstractionObserver]: Analyzing ICFG max-2-u.c [2025-03-16 13:45:42,206 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 13:45:42,208 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG max-2-u.c that has 1 procedures, 16 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-16 13:45:42,244 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 13:45:42,253 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;@5131eec5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 13:45:42,253 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 13:45:42,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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 13:45:42,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-16 13:45:42,261 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:42,262 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:42,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:42,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:42,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1235932205, now seen corresponding path program 1 times [2025-03-16 13:45:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:42,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425534223] [2025-03-16 13:45:42,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:45:42,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:42,319 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-16 13:45:42,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-16 13:45:42,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:45:42,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:42,417 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 13:45:42,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:42,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425534223] [2025-03-16 13:45:42,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425534223] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:45:42,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:45:42,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 13:45:42,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843472516] [2025-03-16 13:45:42,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:45:42,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 13:45:42,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:45:42,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 13:45:42,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 13:45:42,434 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 13:45:42,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:45:42,484 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2025-03-16 13:45:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 13:45:42,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2025-03-16 13:45:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:45:42,490 INFO L225 Difference]: With dead ends: 31 [2025-03-16 13:45:42,490 INFO L226 Difference]: Without dead ends: 15 [2025-03-16 13:45:42,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 13:45:42,493 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 13:45:42,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:45:42,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-03-16 13:45:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2025-03-16 13:45:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 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 13:45:42,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2025-03-16 13:45:42,513 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 20 transitions. Word has length 7 [2025-03-16 13:45:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:45:42,513 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 20 transitions. [2025-03-16 13:45:42,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 13:45:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2025-03-16 13:45:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-16 13:45:42,514 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:42,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:42,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 13:45:42,514 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:42,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:42,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1994406635, now seen corresponding path program 1 times [2025-03-16 13:45:42,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:42,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536754276] [2025-03-16 13:45:42,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:45:42,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:42,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-16 13:45:42,526 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-16 13:45:42,526 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:45:42,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 13:45:42,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:42,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536754276] [2025-03-16 13:45:42,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536754276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:45:42,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:45:42,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 13:45:42,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925421734] [2025-03-16 13:45:42,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:45:42,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 13:45:42,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:45:42,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 13:45:42,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:45:42,590 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 13:45:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:45:42,631 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2025-03-16 13:45:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 13:45:42,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2025-03-16 13:45:42,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:45:42,632 INFO L225 Difference]: With dead ends: 35 [2025-03-16 13:45:42,632 INFO L226 Difference]: Without dead ends: 23 [2025-03-16 13:45:42,632 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 13:45:42,632 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 13:45:42,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 12 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:45:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-03-16 13:45:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2025-03-16 13:45:42,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 13:45:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2025-03-16 13:45:42,644 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 9 [2025-03-16 13:45:42,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:45:42,644 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2025-03-16 13:45:42,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 13:45:42,644 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2025-03-16 13:45:42,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-16 13:45:42,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:42,645 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:42,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 13:45:42,645 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:42,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash 233769590, now seen corresponding path program 1 times [2025-03-16 13:45:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:42,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608847588] [2025-03-16 13:45:42,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:45:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:42,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-16 13:45:42,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-16 13:45:42,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:45:42,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:45:42,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:42,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608847588] [2025-03-16 13:45:42,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608847588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:45:42,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 13:45:42,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 13:45:42,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467061458] [2025-03-16 13:45:42,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:45:42,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 13:45:42,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:45:42,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 13:45:42,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-16 13:45:42,714 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 13:45:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:45:42,757 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2025-03-16 13:45:42,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 13:45:42,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2025-03-16 13:45:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:45:42,758 INFO L225 Difference]: With dead ends: 38 [2025-03-16 13:45:42,758 INFO L226 Difference]: Without dead ends: 31 [2025-03-16 13:45:42,758 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 13:45:42,759 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 13:45:42,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 14 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:45:42,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-03-16 13:45:42,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 18. [2025-03-16 13:45:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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 13:45:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2025-03-16 13:45:42,762 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 10 [2025-03-16 13:45:42,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:45:42,762 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2025-03-16 13:45:42,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 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 13:45:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2025-03-16 13:45:42,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-16 13:45:42,763 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:42,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:42,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 13:45:42,763 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:42,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash 338564398, now seen corresponding path program 1 times [2025-03-16 13:45:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985949323] [2025-03-16 13:45:42,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:45:42,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:42,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-16 13:45:42,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-16 13:45:42,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:45:42,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:42,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:45:42,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:42,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985949323] [2025-03-16 13:45:42,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985949323] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:45:42,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613766024] [2025-03-16 13:45:42,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:45:42,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:45:42,873 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 13:45:42,875 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 13:45:42,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-16 13:45:42,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-16 13:45:42,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:45:42,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:42,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 13:45:42,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:45:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:45:42,982 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:45:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 13:45:43,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613766024] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:45:43,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:45:43,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-16 13:45:43,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369384158] [2025-03-16 13:45:43,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:45:43,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 13:45:43,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:45:43,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 13:45:43,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-03-16 13:45:43,008 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 13:45:43,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:45:43,088 INFO L93 Difference]: Finished difference Result 61 states and 85 transitions. [2025-03-16 13:45:43,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 13:45:43,089 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 15 [2025-03-16 13:45:43,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:45:43,089 INFO L225 Difference]: With dead ends: 61 [2025-03-16 13:45:43,089 INFO L226 Difference]: Without dead ends: 45 [2025-03-16 13:45:43,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-03-16 13:45:43,090 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 66 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 13:45:43,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 30 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:45:43,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-03-16 13:45:43,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2025-03-16 13:45:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 38 states have internal predecessors, (51), 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 13:45:43,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2025-03-16 13:45:43,099 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 15 [2025-03-16 13:45:43,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:45:43,100 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2025-03-16 13:45:43,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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 13:45:43,100 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2025-03-16 13:45:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-16 13:45:43,100 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:43,100 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:43,107 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 13:45:43,300 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 13:45:43,301 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:43,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1813538096, now seen corresponding path program 2 times [2025-03-16 13:45:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801149521] [2025-03-16 13:45:43,301 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:45:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:43,313 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-16 13:45:43,325 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-03-16 13:45:43,325 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:45:43,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:43,376 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-03-16 13:45:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801149521] [2025-03-16 13:45:43,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801149521] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:45:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921373467] [2025-03-16 13:45:43,377 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:45:43,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:43,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:45:43,379 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 13:45:43,380 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 13:45:43,411 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 27 statements into 2 equivalence classes. [2025-03-16 13:45:43,419 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 7 of 27 statements. [2025-03-16 13:45:43,419 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-16 13:45:43,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:43,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-16 13:45:43,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:45:43,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-16 13:45:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-16 13:45:43,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-16 13:45:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921373467] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 13:45:43,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-16 13:45:43,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 8 [2025-03-16 13:45:43,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363500033] [2025-03-16 13:45:43,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 13:45:43,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-16 13:45:43,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:45:43,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-16 13:45:43,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-16 13:45:43,586 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 13:45:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:45:43,668 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2025-03-16 13:45:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 13:45:43,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 27 [2025-03-16 13:45:43,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:45:43,670 INFO L225 Difference]: With dead ends: 100 [2025-03-16 13:45:43,670 INFO L226 Difference]: Without dead ends: 98 [2025-03-16 13:45:43,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-16 13:45:43,671 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 13:45:43,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 39 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:45:43,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-03-16 13:45:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2025-03-16 13:45:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 57 states have internal predecessors, (77), 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 13:45:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 77 transitions. [2025-03-16 13:45:43,685 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 77 transitions. Word has length 27 [2025-03-16 13:45:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:45:43,685 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 77 transitions. [2025-03-16 13:45:43,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 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 13:45:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 77 transitions. [2025-03-16 13:45:43,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-03-16 13:45:43,686 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:43,686 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:43,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-16 13:45:43,886 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 13:45:43,887 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:43,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash 738618865, now seen corresponding path program 1 times [2025-03-16 13:45:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:43,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946231521] [2025-03-16 13:45:43,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:45:43,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:43,896 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-16 13:45:43,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-16 13:45:43,903 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:45:43,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 13:45:44,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946231521] [2025-03-16 13:45:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946231521] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:45:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390618173] [2025-03-16 13:45:44,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 13:45:44,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:44,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:45:44,009 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 13:45:44,011 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 13:45:44,043 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-16 13:45:44,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-16 13:45:44,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 13:45:44,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:44,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-16 13:45:44,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:45:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 13:45:44,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:45:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-03-16 13:45:44,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390618173] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:45:44,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:45:44,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2025-03-16 13:45:44,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615505018] [2025-03-16 13:45:44,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:45:44,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-16 13:45:44,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:45:44,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-16 13:45:44,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2025-03-16 13:45:44,184 INFO L87 Difference]: Start difference. First operand 58 states and 77 transitions. Second operand has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 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 13:45:44,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:45:44,374 INFO L93 Difference]: Finished difference Result 192 states and 263 transitions. [2025-03-16 13:45:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-16 13:45:44,375 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 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 27 [2025-03-16 13:45:44,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:45:44,375 INFO L225 Difference]: With dead ends: 192 [2025-03-16 13:45:44,375 INFO L226 Difference]: Without dead ends: 136 [2025-03-16 13:45:44,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2025-03-16 13:45:44,376 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 198 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 13:45:44,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 63 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:45:44,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-03-16 13:45:44,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 118. [2025-03-16 13:45:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.3247863247863247) internal successors, (155), 117 states have internal predecessors, (155), 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 13:45:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 155 transitions. [2025-03-16 13:45:44,391 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 155 transitions. Word has length 27 [2025-03-16 13:45:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:45:44,392 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 155 transitions. [2025-03-16 13:45:44,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 18 states have internal predecessors, (32), 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 13:45:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 155 transitions. [2025-03-16 13:45:44,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-16 13:45:44,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:44,392 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:44,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-16 13:45:44,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:44,593 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:44,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:44,594 INFO L85 PathProgramCache]: Analyzing trace with hash 148506673, now seen corresponding path program 2 times [2025-03-16 13:45:44,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:44,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179699479] [2025-03-16 13:45:44,594 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:45:44,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:44,618 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-03-16 13:45:44,628 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-16 13:45:44,629 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:45:44,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:44,676 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2025-03-16 13:45:44,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179699479] [2025-03-16 13:45:44,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179699479] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:45:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477796682] [2025-03-16 13:45:44,677 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-16 13:45:44,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:44,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:45:44,679 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 13:45:44,680 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 13:45:44,722 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-03-16 13:45:44,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-16 13:45:44,747 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-16 13:45:44,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:44,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 13:45:44,750 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:45:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2025-03-16 13:45:44,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:45:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2025-03-16 13:45:44,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477796682] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:45:44,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:45:44,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2025-03-16 13:45:44,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451094411] [2025-03-16 13:45:44,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:45:44,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-16 13:45:44,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:45:44,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-16 13:45:44,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-03-16 13:45:44,838 INFO L87 Difference]: Start difference. First operand 118 states and 155 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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 13:45:44,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:45:44,893 INFO L93 Difference]: Finished difference Result 258 states and 336 transitions. [2025-03-16 13:45:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-16 13:45:44,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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 51 [2025-03-16 13:45:44,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:45:44,895 INFO L225 Difference]: With dead ends: 258 [2025-03-16 13:45:44,895 INFO L226 Difference]: Without dead ends: 154 [2025-03-16 13:45:44,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2025-03-16 13:45:44,899 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 13:45:44,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 13:45:44,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-03-16 13:45:44,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2025-03-16 13:45:44,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 1.2679738562091503) internal successors, (194), 153 states have internal predecessors, (194), 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 13:45:44,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 194 transitions. [2025-03-16 13:45:44,925 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 194 transitions. Word has length 51 [2025-03-16 13:45:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:45:44,925 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 194 transitions. [2025-03-16 13:45:44,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 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 13:45:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 194 transitions. [2025-03-16 13:45:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-16 13:45:44,928 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:44,928 INFO L218 NwaCegarLoop]: trace histogram [40, 10, 10, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:44,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-16 13:45:45,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:45,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:45,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash -187614453, now seen corresponding path program 3 times [2025-03-16 13:45:45,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:45,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43257513] [2025-03-16 13:45:45,129 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:45:45,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:45,155 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 87 statements into 25 equivalence classes. [2025-03-16 13:45:45,159 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 87 statements. [2025-03-16 13:45:45,159 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-16 13:45:45,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2025-03-16 13:45:45,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43257513] [2025-03-16 13:45:45,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43257513] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:45:45,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258425833] [2025-03-16 13:45:45,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-16 13:45:45,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:45,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:45:45,194 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 13:45:45,196 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 13:45:45,266 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 87 statements into 25 equivalence classes. [2025-03-16 13:45:45,276 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 87 statements. [2025-03-16 13:45:45,276 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-03-16 13:45:45,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:45,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-16 13:45:45,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:45:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2025-03-16 13:45:45,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:45:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1101 trivial. 0 not checked. [2025-03-16 13:45:45,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258425833] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:45:45,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:45:45,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-16 13:45:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497707704] [2025-03-16 13:45:45,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:45:45,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 13:45:45,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:45:45,557 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 13:45:45,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2025-03-16 13:45:45,557 INFO L87 Difference]: Start difference. First operand 154 states and 194 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 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 13:45:45,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:45:45,664 INFO L93 Difference]: Finished difference Result 490 states and 640 transitions. [2025-03-16 13:45:45,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-16 13:45:45,665 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 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 87 [2025-03-16 13:45:45,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:45:45,667 INFO L225 Difference]: With dead ends: 490 [2025-03-16 13:45:45,667 INFO L226 Difference]: Without dead ends: 453 [2025-03-16 13:45:45,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2025-03-16 13:45:45,668 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 99 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 13:45:45,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 32 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 13:45:45,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2025-03-16 13:45:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 339. [2025-03-16 13:45:45,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3076923076923077) internal successors, (442), 338 states have internal predecessors, (442), 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 13:45:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 442 transitions. [2025-03-16 13:45:45,705 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 442 transitions. Word has length 87 [2025-03-16 13:45:45,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:45:45,706 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 442 transitions. [2025-03-16 13:45:45,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 9 states have internal predecessors, (36), 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 13:45:45,706 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 442 transitions. [2025-03-16 13:45:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2025-03-16 13:45:45,710 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:45,710 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:45,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-16 13:45:45,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:45,911 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:45,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1048927014, now seen corresponding path program 4 times [2025-03-16 13:45:45,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:45,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228447796] [2025-03-16 13:45:45,912 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 13:45:45,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:45,939 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 183 statements into 2 equivalence classes. [2025-03-16 13:45:45,971 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 142 of 183 statements. [2025-03-16 13:45:45,972 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-16 13:45:45,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3472 backedges. 117 proven. 1964 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2025-03-16 13:45:46,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:46,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228447796] [2025-03-16 13:45:46,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228447796] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:45:46,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620287747] [2025-03-16 13:45:46,383 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-16 13:45:46,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:46,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:45:46,385 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 13:45:46,387 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 13:45:46,459 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 183 statements into 2 equivalence classes. [2025-03-16 13:45:46,493 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 142 of 183 statements. [2025-03-16 13:45:46,493 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-16 13:45:46,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:46,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-16 13:45:46,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-16 13:45:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3472 backedges. 117 proven. 1964 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2025-03-16 13:45:46,986 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-16 13:45:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3472 backedges. 117 proven. 1964 refuted. 0 times theorem prover too weak. 1391 trivial. 0 not checked. [2025-03-16 13:45:47,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620287747] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-16 13:45:47,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-16 13:45:47,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 44 [2025-03-16 13:45:47,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283167081] [2025-03-16 13:45:47,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-16 13:45:47,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-03-16 13:45:47,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 13:45:47,278 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-03-16 13:45:47,278 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=462, Invalid=1430, Unknown=0, NotChecked=0, Total=1892 [2025-03-16 13:45:47,279 INFO L87 Difference]: Start difference. First operand 339 states and 442 transitions. Second operand has 44 states, 44 states have (on average 3.2954545454545454) internal successors, (145), 44 states have internal predecessors, (145), 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 13:45:52,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 13:45:52,576 INFO L93 Difference]: Finished difference Result 3440 states and 4353 transitions. [2025-03-16 13:45:52,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2025-03-16 13:45:52,577 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.2954545454545454) internal successors, (145), 44 states have internal predecessors, (145), 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 183 [2025-03-16 13:45:52,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 13:45:52,587 INFO L225 Difference]: With dead ends: 3440 [2025-03-16 13:45:52,588 INFO L226 Difference]: Without dead ends: 3403 [2025-03-16 13:45:52,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 546 SyntacticMatches, 5 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35684 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=19032, Invalid=55224, Unknown=0, NotChecked=0, Total=74256 [2025-03-16 13:45:52,603 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 949 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-16 13:45:52,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 1071 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-16 13:45:52,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2025-03-16 13:45:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 1833. [2025-03-16 13:45:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 1.3635371179039302) internal successors, (2498), 1832 states have internal predecessors, (2498), 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 13:45:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2498 transitions. [2025-03-16 13:45:52,703 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2498 transitions. Word has length 183 [2025-03-16 13:45:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 13:45:52,703 INFO L471 AbstractCegarLoop]: Abstraction has 1833 states and 2498 transitions. [2025-03-16 13:45:52,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.2954545454545454) internal successors, (145), 44 states have internal predecessors, (145), 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 13:45:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2498 transitions. [2025-03-16 13:45:52,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2025-03-16 13:45:52,707 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 13:45:52,708 INFO L218 NwaCegarLoop]: trace histogram [100, 100, 99, 40, 10, 10, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 13:45:52,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-16 13:45:52,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:52,912 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 13:45:52,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 13:45:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1168284792, now seen corresponding path program 5 times [2025-03-16 13:45:52,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 13:45:52,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21067316] [2025-03-16 13:45:52,913 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 13:45:52,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 13:45:52,935 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 375 statements into 108 equivalence classes. [2025-03-16 13:45:54,159 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) and asserted 375 of 375 statements. [2025-03-16 13:45:54,159 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 108 check-sat command(s) [2025-03-16 13:45:54,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 13:45:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 16906 backedges. 7732 proven. 1108 refuted. 0 times theorem prover too weak. 8066 trivial. 0 not checked. [2025-03-16 13:45:54,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 13:45:54,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21067316] [2025-03-16 13:45:54,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21067316] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-16 13:45:54,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752876218] [2025-03-16 13:45:54,659 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-16 13:45:54,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-16 13:45:54,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 13:45:54,661 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-16 13:45:54,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-16 13:45:54,750 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 375 statements into 108 equivalence classes.