./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa3ed2bff1e00689dc57bff3bbe0e8e59870786f79090b55555fbd2dfd8e804d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 04:25:33,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 04:25:33,650 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 04:25:33,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 04:25:33,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 04:25:33,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 04:25:33,668 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 04:25:33,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 04:25:33,669 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 04:25:33,669 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 04:25:33,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 04:25:33,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 04:25:33,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 04:25:33,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 04:25:33,669 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 04:25:33,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 04:25:33,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 04:25:33,670 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 04:25:33,670 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 04:25:33,671 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 04:25:33,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:25:33,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 04:25:33,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 04:25:33,672 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 04:25:33,672 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 04:25:33,672 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 04:25:33,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 04:25:33,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 04:25:33,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 04:25:33,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 04:25:33,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 04:25:33,672 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 -> aa3ed2bff1e00689dc57bff3bbe0e8e59870786f79090b55555fbd2dfd8e804d [2025-03-17 04:25:33,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 04:25:33,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 04:25:33,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 04:25:33,893 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 04:25:33,893 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 04:25:33,894 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i [2025-03-17 04:25:34,995 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c99d085/04b510dc1b3e4255b5b32c13186ea9c2/FLAG0bc553e0b [2025-03-17 04:25:35,321 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 04:25:35,322 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i [2025-03-17 04:25:35,331 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c99d085/04b510dc1b3e4255b5b32c13186ea9c2/FLAG0bc553e0b [2025-03-17 04:25:35,576 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6c99d085/04b510dc1b3e4255b5b32c13186ea9c2 [2025-03-17 04:25:35,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 04:25:35,580 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 04:25:35,581 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 04:25:35,581 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 04:25:35,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 04:25:35,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:35,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390b6cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35, skipping insertion in model container [2025-03-17 04:25:35,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:35,616 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 04:25:35,725 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i[916,929] [2025-03-17 04:25:35,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:25:35,851 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 04:25:35,861 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount250_file-12.i[916,929] [2025-03-17 04:25:35,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 04:25:35,927 INFO L204 MainTranslator]: Completed translation [2025-03-17 04:25:35,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35 WrapperNode [2025-03-17 04:25:35,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 04:25:35,929 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 04:25:35,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 04:25:35,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 04:25:35,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:35,944 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:35,993 INFO L138 Inliner]: procedures = 26, calls = 62, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 463 [2025-03-17 04:25:35,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 04:25:35,994 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 04:25:35,994 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 04:25:35,995 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 04:25:36,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,050 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 04:25:36,051 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,052 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,073 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 04:25:36,109 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 04:25:36,110 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 04:25:36,110 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 04:25:36,111 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (1/1) ... [2025-03-17 04:25:36,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 04:25:36,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:25:36,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 04:25:36,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 04:25:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 04:25:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-17 04:25:36,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-17 04:25:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 04:25:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 04:25:36,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 04:25:36,242 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 04:25:36,243 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 04:25:36,877 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L351: havoc property_#t~ite43#1;havoc property_#t~ite42#1;havoc property_#t~bitwise39#1;havoc property_#t~ite41#1;havoc property_#t~bitwise40#1;havoc property_#t~short44#1;havoc property_#t~ite49#1;havoc property_#t~ite48#1;havoc property_#t~bitwise45#1;havoc property_#t~ite47#1;havoc property_#t~bitwise46#1;havoc property_#t~short50#1; [2025-03-17 04:25:36,930 INFO L? ?]: Removed 69 outVars from TransFormulas that were not future-live. [2025-03-17 04:25:36,930 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 04:25:36,952 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 04:25:36,952 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 04:25:36,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:25:36 BoogieIcfgContainer [2025-03-17 04:25:36,953 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 04:25:36,954 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 04:25:36,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 04:25:36,958 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 04:25:36,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 04:25:35" (1/3) ... [2025-03-17 04:25:36,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3b217e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:25:36, skipping insertion in model container [2025-03-17 04:25:36,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 04:25:35" (2/3) ... [2025-03-17 04:25:36,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3b217e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 04:25:36, skipping insertion in model container [2025-03-17 04:25:36,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 04:25:36" (3/3) ... [2025-03-17 04:25:36,960 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-12.i [2025-03-17 04:25:36,970 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 04:25:36,974 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount250_file-12.i that has 2 procedures, 183 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-17 04:25:37,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 04:25:37,078 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;@2e779386, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 04:25:37,078 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 04:25:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 131 states have (on average 1.4809160305343512) internal successors, (194), 132 states have internal predecessors, (194), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-17 04:25:37,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-03-17 04:25:37,099 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:37,100 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:25:37,100 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:37,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash 408542186, now seen corresponding path program 1 times [2025-03-17 04:25:37,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:37,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456811279] [2025-03-17 04:25:37,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:37,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:37,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-17 04:25:37,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-17 04:25:37,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:37,244 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:37,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-17 04:25:37,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:37,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456811279] [2025-03-17 04:25:37,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456811279] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:25:37,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845071631] [2025-03-17 04:25:37,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:37,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:25:37,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:25:37,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 04:25:37,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 04:25:37,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-17 04:25:37,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-17 04:25:37,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:37,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:37,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-17 04:25:37,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:25:37,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 4608 trivial. 0 not checked. [2025-03-17 04:25:37,879 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 04:25:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845071631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:25:37,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 04:25:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-17 04:25:37,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020671746] [2025-03-17 04:25:37,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:25:37,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 04:25:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:25:37,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 04:25:37,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:25:37,900 INFO L87 Difference]: Start difference. First operand has 183 states, 131 states have (on average 1.4809160305343512) internal successors, (194), 132 states have internal predecessors, (194), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-17 04:25:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:25:37,937 INFO L93 Difference]: Finished difference Result 345 states and 603 transitions. [2025-03-17 04:25:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 04:25:37,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) Word has length 314 [2025-03-17 04:25:37,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:25:37,949 INFO L225 Difference]: With dead ends: 345 [2025-03-17 04:25:37,949 INFO L226 Difference]: Without dead ends: 163 [2025-03-17 04:25:37,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 04:25:37,958 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:25:37,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 254 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 04:25:37,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-03-17 04:25:37,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2025-03-17 04:25:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 112 states have (on average 1.4285714285714286) internal successors, (160), 112 states have internal predecessors, (160), 49 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2025-03-17 04:25:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 258 transitions. [2025-03-17 04:25:38,009 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 258 transitions. Word has length 314 [2025-03-17 04:25:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:25:38,009 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 258 transitions. [2025-03-17 04:25:38,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 2 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 2 states have call successors, (49) [2025-03-17 04:25:38,010 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 258 transitions. [2025-03-17 04:25:38,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-03-17 04:25:38,017 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:38,017 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:25:38,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 04:25:38,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-17 04:25:38,223 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:38,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 954379811, now seen corresponding path program 1 times [2025-03-17 04:25:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:38,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266912271] [2025-03-17 04:25:38,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:38,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:38,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-17 04:25:38,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-17 04:25:38,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:38,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-17 04:25:39,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:39,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266912271] [2025-03-17 04:25:39,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266912271] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:25:39,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:25:39,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 04:25:39,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770691837] [2025-03-17 04:25:39,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:25:39,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 04:25:39,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:25:39,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 04:25:39,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:25:39,127 INFO L87 Difference]: Start difference. First operand 163 states and 258 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:25:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:25:39,362 INFO L93 Difference]: Finished difference Result 487 states and 772 transitions. [2025-03-17 04:25:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 04:25:39,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 314 [2025-03-17 04:25:39,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:25:39,366 INFO L225 Difference]: With dead ends: 487 [2025-03-17 04:25:39,366 INFO L226 Difference]: Without dead ends: 325 [2025-03-17 04:25:39,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 04:25:39,367 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 171 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 04:25:39,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 636 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 04:25:39,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2025-03-17 04:25:39,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 322. [2025-03-17 04:25:39,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 221 states have (on average 1.4253393665158371) internal successors, (315), 221 states have internal predecessors, (315), 98 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2025-03-17 04:25:39,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 511 transitions. [2025-03-17 04:25:39,420 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 511 transitions. Word has length 314 [2025-03-17 04:25:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:25:39,421 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 511 transitions. [2025-03-17 04:25:39,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:25:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 511 transitions. [2025-03-17 04:25:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-03-17 04:25:39,424 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:39,425 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:25:39,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 04:25:39,425 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:39,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1979871810, now seen corresponding path program 1 times [2025-03-17 04:25:39,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:39,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304809522] [2025-03-17 04:25:39,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:39,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:39,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-17 04:25:39,616 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-17 04:25:39,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:39,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2025-03-17 04:25:40,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304809522] [2025-03-17 04:25:40,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304809522] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 04:25:40,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 04:25:40,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 04:25:40,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864842406] [2025-03-17 04:25:40,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 04:25:40,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 04:25:40,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:25:40,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 04:25:40,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:25:40,562 INFO L87 Difference]: Start difference. First operand 322 states and 511 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:25:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:25:40,901 INFO L93 Difference]: Finished difference Result 1001 states and 1567 transitions. [2025-03-17 04:25:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 04:25:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 314 [2025-03-17 04:25:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:25:40,909 INFO L225 Difference]: With dead ends: 1001 [2025-03-17 04:25:40,910 INFO L226 Difference]: Without dead ends: 680 [2025-03-17 04:25:40,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 04:25:40,912 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 250 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:25:40,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 791 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:25:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2025-03-17 04:25:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 548. [2025-03-17 04:25:40,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 413 states have (on average 1.450363196125908) internal successors, (599), 415 states have internal predecessors, (599), 130 states have call successors, (130), 4 states have call predecessors, (130), 4 states have return successors, (130), 128 states have call predecessors, (130), 130 states have call successors, (130) [2025-03-17 04:25:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 859 transitions. [2025-03-17 04:25:40,968 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 859 transitions. Word has length 314 [2025-03-17 04:25:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:25:40,969 INFO L471 AbstractCegarLoop]: Abstraction has 548 states and 859 transitions. [2025-03-17 04:25:40,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 1 states have call successors, (49), 1 states have call predecessors, (49), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2025-03-17 04:25:40,970 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 859 transitions. [2025-03-17 04:25:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2025-03-17 04:25:40,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:40,974 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:25:40,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 04:25:40,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:40,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash 264778531, now seen corresponding path program 1 times [2025-03-17 04:25:40,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:40,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961761289] [2025-03-17 04:25:40,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:40,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:41,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-17 04:25:41,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-17 04:25:41,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:41,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:41,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 27 proven. 117 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-03-17 04:25:41,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961761289] [2025-03-17 04:25:41,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961761289] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:25:41,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179126688] [2025-03-17 04:25:41,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:41,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:25:41,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:25:41,885 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) [2025-03-17 04:25:41,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 04:25:42,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 314 statements into 1 equivalence classes. [2025-03-17 04:25:42,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 314 of 314 statements. [2025-03-17 04:25:42,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:42,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:42,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 04:25:42,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:25:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2128 proven. 96 refuted. 0 times theorem prover too weak. 2480 trivial. 0 not checked. [2025-03-17 04:25:42,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:25:43,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-03-17 04:25:43,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179126688] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:25:43,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:25:43,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 14 [2025-03-17 04:25:43,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882013731] [2025-03-17 04:25:43,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:25:43,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-17 04:25:43,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:25:43,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-17 04:25:43,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-17 04:25:43,037 INFO L87 Difference]: Start difference. First operand 548 states and 859 transitions. Second operand has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 4 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2025-03-17 04:25:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:25:45,123 INFO L93 Difference]: Finished difference Result 1501 states and 2326 transitions. [2025-03-17 04:25:45,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-03-17 04:25:45,124 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 4 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) Word has length 314 [2025-03-17 04:25:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:25:45,136 INFO L225 Difference]: With dead ends: 1501 [2025-03-17 04:25:45,136 INFO L226 Difference]: Without dead ends: 954 [2025-03-17 04:25:45,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 626 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=528, Invalid=1922, Unknown=0, NotChecked=0, Total=2450 [2025-03-17 04:25:45,140 INFO L435 NwaCegarLoop]: 214 mSDtfsCounter, 1759 mSDsluCounter, 2081 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 2178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-17 04:25:45,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1777 Valid, 2295 Invalid, 2178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-17 04:25:45,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2025-03-17 04:25:45,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 679. [2025-03-17 04:25:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 506 states have (on average 1.4189723320158103) internal successors, (718), 507 states have internal predecessors, (718), 163 states have call successors, (163), 9 states have call predecessors, (163), 9 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2025-03-17 04:25:45,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1044 transitions. [2025-03-17 04:25:45,217 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1044 transitions. Word has length 314 [2025-03-17 04:25:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:25:45,219 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 1044 transitions. [2025-03-17 04:25:45,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.5) internal successors, (133), 14 states have internal predecessors, (133), 4 states have call successors, (130), 2 states have call predecessors, (130), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2025-03-17 04:25:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1044 transitions. [2025-03-17 04:25:45,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2025-03-17 04:25:45,223 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:45,223 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:25:45,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 04:25:45,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-17 04:25:45,428 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:45,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1151009149, now seen corresponding path program 1 times [2025-03-17 04:25:45,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:45,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514829699] [2025-03-17 04:25:45,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:45,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:45,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 316 statements into 1 equivalence classes. [2025-03-17 04:25:45,900 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 316 of 316 statements. [2025-03-17 04:25:45,900 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:45,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-03-17 04:25:46,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514829699] [2025-03-17 04:25:46,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514829699] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:25:46,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766811521] [2025-03-17 04:25:46,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:46,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:25:46,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:25:46,405 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) [2025-03-17 04:25:46,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 04:25:46,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 316 statements into 1 equivalence classes. [2025-03-17 04:25:46,592 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 316 of 316 statements. [2025-03-17 04:25:46,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:46,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:46,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-17 04:25:46,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:25:46,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2090 proven. 300 refuted. 0 times theorem prover too weak. 2314 trivial. 0 not checked. [2025-03-17 04:25:46,943 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:25:47,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-03-17 04:25:47,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766811521] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:25:47,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:25:47,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 6] total 13 [2025-03-17 04:25:47,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37744251] [2025-03-17 04:25:47,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:25:47,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-17 04:25:47,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:25:47,261 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-17 04:25:47,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-03-17 04:25:47,261 INFO L87 Difference]: Start difference. First operand 679 states and 1044 transitions. Second operand has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 3 states have call successors, (81), 3 states have call predecessors, (81), 5 states have return successors, (83), 3 states have call predecessors, (83), 3 states have call successors, (83) [2025-03-17 04:25:47,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:25:47,624 INFO L93 Difference]: Finished difference Result 1180 states and 1804 transitions. [2025-03-17 04:25:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 04:25:47,625 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 3 states have call successors, (81), 3 states have call predecessors, (81), 5 states have return successors, (83), 3 states have call predecessors, (83), 3 states have call successors, (83) Word has length 316 [2025-03-17 04:25:47,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:25:47,629 INFO L225 Difference]: With dead ends: 1180 [2025-03-17 04:25:47,630 INFO L226 Difference]: Without dead ends: 703 [2025-03-17 04:25:47,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 624 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2025-03-17 04:25:47,633 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 246 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 04:25:47,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 834 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 04:25:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2025-03-17 04:25:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 691. [2025-03-17 04:25:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 515 states have (on average 1.4038834951456312) internal successors, (723), 516 states have internal predecessors, (723), 163 states have call successors, (163), 12 states have call predecessors, (163), 12 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2025-03-17 04:25:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1049 transitions. [2025-03-17 04:25:47,710 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1049 transitions. Word has length 316 [2025-03-17 04:25:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:25:47,711 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1049 transitions. [2025-03-17 04:25:47,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.923076923076923) internal successors, (129), 13 states have internal predecessors, (129), 3 states have call successors, (81), 3 states have call predecessors, (81), 5 states have return successors, (83), 3 states have call predecessors, (83), 3 states have call successors, (83) [2025-03-17 04:25:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1049 transitions. [2025-03-17 04:25:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2025-03-17 04:25:47,717 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:47,717 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:25:47,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 04:25:47,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:25:47,921 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:47,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash -803813809, now seen corresponding path program 1 times [2025-03-17 04:25:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:47,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813875986] [2025-03-17 04:25:47,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:47,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-03-17 04:25:48,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-03-17 04:25:48,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:48,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 78 proven. 66 refuted. 0 times theorem prover too weak. 4560 trivial. 0 not checked. [2025-03-17 04:25:48,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:48,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813875986] [2025-03-17 04:25:48,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813875986] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:25:48,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318565200] [2025-03-17 04:25:48,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:48,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:25:48,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:25:48,529 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) [2025-03-17 04:25:48,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 04:25:48,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 317 statements into 1 equivalence classes. [2025-03-17 04:25:48,733 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 317 of 317 statements. [2025-03-17 04:25:48,733 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:48,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:48,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-03-17 04:25:48,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:25:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 3106 proven. 405 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2025-03-17 04:25:50,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:25:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 402 proven. 288 refuted. 0 times theorem prover too weak. 4014 trivial. 0 not checked. [2025-03-17 04:25:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318565200] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 04:25:52,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 04:25:52,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 25, 19] total 45 [2025-03-17 04:25:52,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841413297] [2025-03-17 04:25:52,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 04:25:52,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-03-17 04:25:52,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:25:52,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-03-17 04:25:52,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=584, Invalid=1396, Unknown=0, NotChecked=0, Total=1980 [2025-03-17 04:25:52,006 INFO L87 Difference]: Start difference. First operand 691 states and 1049 transitions. Second operand has 45 states, 43 states have (on average 4.767441860465116) internal successors, (205), 40 states have internal predecessors, (205), 14 states have call successors, (110), 8 states have call predecessors, (110), 15 states have return successors, (112), 14 states have call predecessors, (112), 14 states have call successors, (112) [2025-03-17 04:25:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 04:25:53,487 INFO L93 Difference]: Finished difference Result 1477 states and 2154 transitions. [2025-03-17 04:25:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-03-17 04:25:53,488 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 43 states have (on average 4.767441860465116) internal successors, (205), 40 states have internal predecessors, (205), 14 states have call successors, (110), 8 states have call predecessors, (110), 15 states have return successors, (112), 14 states have call predecessors, (112), 14 states have call successors, (112) Word has length 317 [2025-03-17 04:25:53,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 04:25:53,496 INFO L225 Difference]: With dead ends: 1477 [2025-03-17 04:25:53,496 INFO L226 Difference]: Without dead ends: 972 [2025-03-17 04:25:53,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1137, Invalid=2769, Unknown=0, NotChecked=0, Total=3906 [2025-03-17 04:25:53,499 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 664 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-17 04:25:53,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1375 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-17 04:25:53,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2025-03-17 04:25:53,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 947. [2025-03-17 04:25:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 947 states, 717 states have (on average 1.3528591352859136) internal successors, (970), 719 states have internal predecessors, (970), 189 states have call successors, (189), 40 states have call predecessors, (189), 40 states have return successors, (189), 187 states have call predecessors, (189), 189 states have call successors, (189) [2025-03-17 04:25:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1348 transitions. [2025-03-17 04:25:53,568 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1348 transitions. Word has length 317 [2025-03-17 04:25:53,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 04:25:53,568 INFO L471 AbstractCegarLoop]: Abstraction has 947 states and 1348 transitions. [2025-03-17 04:25:53,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 43 states have (on average 4.767441860465116) internal successors, (205), 40 states have internal predecessors, (205), 14 states have call successors, (110), 8 states have call predecessors, (110), 15 states have return successors, (112), 14 states have call predecessors, (112), 14 states have call successors, (112) [2025-03-17 04:25:53,569 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1348 transitions. [2025-03-17 04:25:53,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2025-03-17 04:25:53,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 04:25:53,571 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 04:25:53,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 04:25:53,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:25:53,772 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 04:25:53,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 04:25:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1812044249, now seen corresponding path program 1 times [2025-03-17 04:25:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 04:25:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101180129] [2025-03-17 04:25:53,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 04:25:53,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-17 04:25:54,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-17 04:25:54,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:54,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 417 proven. 465 refuted. 0 times theorem prover too weak. 3822 trivial. 0 not checked. [2025-03-17 04:25:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 04:25:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101180129] [2025-03-17 04:25:55,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101180129] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:25:55,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960540871] [2025-03-17 04:25:55,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 04:25:55,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 04:25:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 04:25:55,811 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) [2025-03-17 04:25:55,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 04:25:55,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 318 statements into 1 equivalence classes. [2025-03-17 04:25:56,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 318 of 318 statements. [2025-03-17 04:25:56,140 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 04:25:56,140 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 04:25:56,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 70 conjuncts are in the unsatisfiable core [2025-03-17 04:25:56,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 04:26:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4704 backedges. 2894 proven. 722 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2025-03-17 04:26:00,330 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 04:26:10,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960540871] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 04:26:10,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-17 04:26:10,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 31] total 43 [2025-03-17 04:26:10,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689514843] [2025-03-17 04:26:10,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-17 04:26:10,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-03-17 04:26:10,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 04:26:10,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-03-17 04:26:10,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=555, Invalid=2199, Unknown=2, NotChecked=0, Total=2756 [2025-03-17 04:26:10,424 INFO L87 Difference]: Start difference. First operand 947 states and 1348 transitions. Second operand has 43 states, 40 states have (on average 3.525) internal successors, (141), 36 states have internal predecessors, (141), 16 states have call successors, (98), 10 states have call predecessors, (98), 14 states have return successors, (98), 16 states have call predecessors, (98), 16 states have call successors, (98) [2025-03-17 04:26:19,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]