./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/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_1.5.800.v20200727-1323.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/ntdrivers/floppy.i.cil-1.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.graphml --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 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:46:44,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:46:44,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:46:44,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:46:44,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:46:44,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:46:44,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:46:44,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:46:44,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:46:44,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:46:44,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:46:44,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:46:44,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:46:44,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:46:44,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:46:44,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:46:44,377 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:46:44,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:46:44,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:46:44,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:46:44,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:46:44,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:46:44,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:46:44,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:46:44,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:46:44,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:46:44,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:46:44,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:46:44,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:46:44,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:46:44,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:46:44,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:46:44,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:46:44,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:46:44,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:46:44,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:46:44,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:46:44,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:46:44,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:46:44,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:46:44,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:46:44,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:46:44,425 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:46:44,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:46:44,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:46:44,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:46:44,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:46:44,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:46:44,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:46:44,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:46:44,429 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:46:44,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:46:44,430 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:46:44,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:46:44,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:46:44,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:46:44,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:46:44,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:46:44,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:46:44,431 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:46:44,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:46:44,431 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:46:44,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:46:44,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:46:44,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:46:44,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:46:44,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:46:44,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:46:44,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:46:44,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:46:44,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:46:44,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:46:44,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:46:44,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:46:44,433 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:46:44,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:46:44,433 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:46:44,434 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 [2023-02-16 00:46:44,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:46:44,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:46:44,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:46:44,682 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:46:44,682 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:46:44,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-02-16 00:46:45,575 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:46:45,952 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:46:45,953 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-02-16 00:46:45,986 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e5195cc4/9312dd338bcd49c8841e9fb73568b6fb/FLAGd7cb9062d [2023-02-16 00:46:46,181 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e5195cc4/9312dd338bcd49c8841e9fb73568b6fb [2023-02-16 00:46:46,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:46:46,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:46:46,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:46:46,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:46:46,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:46:46,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:46:46" (1/1) ... [2023-02-16 00:46:46,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b91842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:46, skipping insertion in model container [2023-02-16 00:46:46,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:46:46" (1/1) ... [2023-02-16 00:46:46,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:46:46,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:46:46,642 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c[76734,76747] [2023-02-16 00:46:46,673 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-16 00:46:46,680 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-16 00:46:47,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:46:47,062 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:46:47,108 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c[76734,76747] [2023-02-16 00:46:47,115 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-16 00:46:47,117 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-16 00:46:47,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:46:47,329 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:46:47,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47 WrapperNode [2023-02-16 00:46:47,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:46:47,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:46:47,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:46:47,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:46:47,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,480 INFO L138 Inliner]: procedures = 126, calls = 2882, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 3051 [2023-02-16 00:46:47,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:46:47,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:46:47,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:46:47,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:46:47,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:46:47,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:46:47,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:46:47,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:46:47,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (1/1) ... [2023-02-16 00:46:47,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:46:47,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:46:47,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 00:46:47,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 00:46:47,684 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-16 00:46:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-16 00:46:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-02-16 00:46:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-16 00:46:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-16 00:46:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:46:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-16 00:46:47,685 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-16 00:46:47,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-02-16 00:46:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-02-16 00:46:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-16 00:46:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-16 00:46:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-16 00:46:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-16 00:46:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:46:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-16 00:46:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-16 00:46:47,686 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-16 00:46:47,686 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-16 00:46:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-16 00:46:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-16 00:46:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-16 00:46:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-16 00:46:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-16 00:46:47,687 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-16 00:46:47,687 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-16 00:46:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-16 00:46:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-16 00:46:47,688 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-16 00:46:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 00:46:47,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:46:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-16 00:46:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-16 00:46:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-16 00:46:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-16 00:46:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 00:46:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 00:46:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-16 00:46:47,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-16 00:46:47,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 00:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-16 00:46:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-16 00:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-16 00:46:47,690 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-16 00:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:46:47,690 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-16 00:46:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-16 00:46:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-02-16 00:46:47,691 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-16 00:46:47,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-16 00:46:47,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:46:47,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:46:48,169 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:46:48,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:46:48,224 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,236 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-16 00:46:48,237 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-16 00:46:48,240 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,366 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-16 00:46:48,367 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-16 00:46:48,393 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,403 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-16 00:46:48,404 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-16 00:46:48,455 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,472 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-16 00:46:48,472 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-16 00:46:48,473 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,473 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,473 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,560 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-16 00:46:48,560 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-16 00:46:48,560 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-16 00:46:48,560 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-16 00:46:48,560 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-16 00:46:48,560 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-16 00:46:48,562 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,565 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,565 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,943 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-16 00:46:48,943 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-16 00:46:48,943 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-16 00:46:48,943 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-16 00:46:48,943 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-16 00:46:48,943 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-16 00:46:48,973 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:48,993 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-16 00:46:48,993 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-16 00:46:49,000 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:49,000 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:49,001 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:49,002 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:49,003 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:49,004 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:49,005 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:49,005 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-16 00:46:51,924 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-16 00:46:51,925 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-16 00:46:51,926 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-16 00:46:51,935 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:46:51,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:46:51,942 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-16 00:46:51,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:46:51 BoogieIcfgContainer [2023-02-16 00:46:51,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:46:51,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:46:51,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:46:51,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:46:51,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:46:46" (1/3) ... [2023-02-16 00:46:51,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a927c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:46:51, skipping insertion in model container [2023-02-16 00:46:51,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:46:47" (2/3) ... [2023-02-16 00:46:51,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a927c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:46:51, skipping insertion in model container [2023-02-16 00:46:51,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:46:51" (3/3) ... [2023-02-16 00:46:51,949 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2023-02-16 00:46:51,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:46:51,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:46:51,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:46:51,999 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6ccecbd2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:46:51,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:46:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 564 states, 453 states have (on average 1.5011037527593818) internal successors, (680), 486 states have internal predecessors, (680), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2023-02-16 00:46:52,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 00:46:52,009 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:52,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:52,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:52,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash -197079634, now seen corresponding path program 1 times [2023-02-16 00:46:52,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:52,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785907989] [2023-02-16 00:46:52,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:52,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:46:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:46:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:52,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:52,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785907989] [2023-02-16 00:46:52,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785907989] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:52,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:52,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:46:52,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977974805] [2023-02-16 00:46:52,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:52,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:46:52,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:52,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:46:52,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:46:52,543 INFO L87 Difference]: Start difference. First operand has 564 states, 453 states have (on average 1.5011037527593818) internal successors, (680), 486 states have internal predecessors, (680), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 00:46:56,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:46:56,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:46:56,350 INFO L93 Difference]: Finished difference Result 1130 states and 1773 transitions. [2023-02-16 00:46:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:46:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-02-16 00:46:56,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:46:56,361 INFO L225 Difference]: With dead ends: 1130 [2023-02-16 00:46:56,361 INFO L226 Difference]: Without dead ends: 639 [2023-02-16 00:46:56,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:46:56,368 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 412 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 207 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-02-16 00:46:56,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2006 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 856 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-02-16 00:46:56,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-16 00:46:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-16 00:46:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 452 states have (on average 1.4623893805309736) internal successors, (661), 483 states have internal predecessors, (661), 90 states have call successors, (90), 21 states have call predecessors, (90), 20 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2023-02-16 00:46:56,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 818 transitions. [2023-02-16 00:46:56,451 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 818 transitions. Word has length 26 [2023-02-16 00:46:56,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:46:56,451 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 818 transitions. [2023-02-16 00:46:56,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 00:46:56,452 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 818 transitions. [2023-02-16 00:46:56,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 00:46:56,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:46:56,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:46:56,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:46:56,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:46:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:46:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash -169212496, now seen corresponding path program 1 times [2023-02-16 00:46:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:46:56,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428549095] [2023-02-16 00:46:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:46:56,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:46:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:56,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:46:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:56,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:46:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:46:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:46:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:46:56,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428549095] [2023-02-16 00:46:56,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428549095] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:46:56,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:46:56,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 00:46:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038723978] [2023-02-16 00:46:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:46:56,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 00:46:56,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:46:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 00:46:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:46:56,675 INFO L87 Difference]: Start difference. First operand 563 states and 818 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:47:00,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:00,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:00,957 INFO L93 Difference]: Finished difference Result 1183 states and 1738 transitions. [2023-02-16 00:47:00,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 00:47:00,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-02-16 00:47:00,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:00,961 INFO L225 Difference]: With dead ends: 1183 [2023-02-16 00:47:00,961 INFO L226 Difference]: Without dead ends: 639 [2023-02-16 00:47:00,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 00:47:00,964 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 374 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 203 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:00,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2604 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1047 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-02-16 00:47:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-16 00:47:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-16 00:47:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 452 states have (on average 1.4601769911504425) internal successors, (660), 483 states have internal predecessors, (660), 90 states have call successors, (90), 21 states have call predecessors, (90), 20 states have return successors, (67), 65 states have call predecessors, (67), 67 states have call successors, (67) [2023-02-16 00:47:01,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 817 transitions. [2023-02-16 00:47:01,019 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 817 transitions. Word has length 29 [2023-02-16 00:47:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:01,019 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 817 transitions. [2023-02-16 00:47:01,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:47:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 817 transitions. [2023-02-16 00:47:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 00:47:01,020 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:01,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:01,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 00:47:01,021 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:01,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:01,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1081663514, now seen corresponding path program 1 times [2023-02-16 00:47:01,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:01,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472630564] [2023-02-16 00:47:01,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:01,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:01,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:47:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:01,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:01,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472630564] [2023-02-16 00:47:01,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472630564] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:47:01,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:47:01,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:47:01,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762129727] [2023-02-16 00:47:01,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:47:01,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:47:01,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:01,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:47:01,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:47:01,336 INFO L87 Difference]: Start difference. First operand 563 states and 817 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:47:04,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:05,554 INFO L93 Difference]: Finished difference Result 1494 states and 2232 transitions. [2023-02-16 00:47:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:47:05,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2023-02-16 00:47:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:05,559 INFO L225 Difference]: With dead ends: 1494 [2023-02-16 00:47:05,559 INFO L226 Difference]: Without dead ends: 1093 [2023-02-16 00:47:05,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:47:05,561 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1344 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 361 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:05,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2251 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1114 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-02-16 00:47:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-02-16 00:47:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 979. [2023-02-16 00:47:05,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 813 states have (on average 1.4452644526445264) internal successors, (1175), 840 states have internal predecessors, (1175), 124 states have call successors, (124), 38 states have call predecessors, (124), 41 states have return successors, (147), 108 states have call predecessors, (147), 109 states have call successors, (147) [2023-02-16 00:47:05,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1446 transitions. [2023-02-16 00:47:05,614 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1446 transitions. Word has length 33 [2023-02-16 00:47:05,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:05,614 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1446 transitions. [2023-02-16 00:47:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:47:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1446 transitions. [2023-02-16 00:47:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-16 00:47:05,623 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:05,623 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:05,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 00:47:05,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:05,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144769, now seen corresponding path program 1 times [2023-02-16 00:47:05,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:05,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923276717] [2023-02-16 00:47:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:05,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:05,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:47:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:05,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-16 00:47:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:05,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:05,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923276717] [2023-02-16 00:47:05,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923276717] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:47:05,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:47:05,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:47:05,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656844776] [2023-02-16 00:47:05,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:47:05,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:47:05,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:05,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:47:05,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:47:05,952 INFO L87 Difference]: Start difference. First operand 979 states and 1446 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:47:09,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:10,169 INFO L93 Difference]: Finished difference Result 1814 states and 2766 transitions. [2023-02-16 00:47:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:47:10,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2023-02-16 00:47:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:10,177 INFO L225 Difference]: With dead ends: 1814 [2023-02-16 00:47:10,178 INFO L226 Difference]: Without dead ends: 1796 [2023-02-16 00:47:10,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:47:10,180 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1471 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 344 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:10,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1899 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 889 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-02-16 00:47:10,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-02-16 00:47:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1569. [2023-02-16 00:47:10,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1311 states have (on average 1.4683447749809306) internal successors, (1925), 1356 states have internal predecessors, (1925), 189 states have call successors, (189), 61 states have call predecessors, (189), 68 states have return successors, (250), 164 states have call predecessors, (250), 174 states have call successors, (250) [2023-02-16 00:47:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2364 transitions. [2023-02-16 00:47:10,244 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2364 transitions. Word has length 45 [2023-02-16 00:47:10,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:10,245 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2364 transitions. [2023-02-16 00:47:10,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:47:10,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2364 transitions. [2023-02-16 00:47:10,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-16 00:47:10,247 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:10,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:10,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 00:47:10,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:10,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:10,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1069708837, now seen corresponding path program 1 times [2023-02-16 00:47:10,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:10,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184869696] [2023-02-16 00:47:10,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:10,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:10,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:10,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:47:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:10,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184869696] [2023-02-16 00:47:10,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184869696] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:47:10,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:47:10,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:47:10,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58729254] [2023-02-16 00:47:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:47:10,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:47:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:47:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:47:10,431 INFO L87 Difference]: Start difference. First operand 1569 states and 2364 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:47:13,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:14,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:14,136 INFO L93 Difference]: Finished difference Result 1793 states and 2748 transitions. [2023-02-16 00:47:14,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:47:14,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2023-02-16 00:47:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:14,144 INFO L225 Difference]: With dead ends: 1793 [2023-02-16 00:47:14,146 INFO L226 Difference]: Without dead ends: 1789 [2023-02-16 00:47:14,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:47:14,148 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 485 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 209 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:14,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1895 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2023-02-16 00:47:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-02-16 00:47:14,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1602. [2023-02-16 00:47:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1342 states have (on average 1.4679582712369597) internal successors, (1970), 1384 states have internal predecessors, (1970), 190 states have call successors, (190), 63 states have call predecessors, (190), 69 states have return successors, (251), 165 states have call predecessors, (251), 175 states have call successors, (251) [2023-02-16 00:47:14,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2411 transitions. [2023-02-16 00:47:14,194 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2411 transitions. Word has length 43 [2023-02-16 00:47:14,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:14,196 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2411 transitions. [2023-02-16 00:47:14,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:47:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2411 transitions. [2023-02-16 00:47:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-16 00:47:14,198 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:14,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:14,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 00:47:14,198 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash -897411344, now seen corresponding path program 1 times [2023-02-16 00:47:14,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:14,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36855803] [2023-02-16 00:47:14,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:14,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:14,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:47:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:14,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:14,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36855803] [2023-02-16 00:47:14,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36855803] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:47:14,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:47:14,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:47:14,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134313381] [2023-02-16 00:47:14,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:47:14,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:47:14,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:14,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:47:14,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:47:14,353 INFO L87 Difference]: Start difference. First operand 1602 states and 2411 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:47:17,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:19,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:21,587 INFO L93 Difference]: Finished difference Result 3169 states and 4941 transitions. [2023-02-16 00:47:21,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:47:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-02-16 00:47:21,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:21,600 INFO L225 Difference]: With dead ends: 3169 [2023-02-16 00:47:21,600 INFO L226 Difference]: Without dead ends: 3166 [2023-02-16 00:47:21,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:47:21,602 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 934 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 264 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:21,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2714 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1306 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2023-02-16 00:47:21,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2023-02-16 00:47:21,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 2550. [2023-02-16 00:47:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2173 states have (on average 1.4832029452369995) internal successors, (3223), 2225 states have internal predecessors, (3223), 266 states have call successors, (266), 99 states have call predecessors, (266), 110 states have return successors, (392), 236 states have call predecessors, (392), 251 states have call successors, (392) [2023-02-16 00:47:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3881 transitions. [2023-02-16 00:47:21,702 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3881 transitions. Word has length 45 [2023-02-16 00:47:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:21,704 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3881 transitions. [2023-02-16 00:47:21,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:47:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3881 transitions. [2023-02-16 00:47:21,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-16 00:47:21,706 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:21,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:21,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-16 00:47:21,707 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash -285485209, now seen corresponding path program 1 times [2023-02-16 00:47:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:21,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405418410] [2023-02-16 00:47:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:21,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:21,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:47:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:21,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-16 00:47:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:47:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:22,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:22,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405418410] [2023-02-16 00:47:22,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405418410] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:47:22,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:47:22,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 00:47:22,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750586524] [2023-02-16 00:47:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:47:22,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:47:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:22,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:47:22,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:47:22,019 INFO L87 Difference]: Start difference. First operand 2550 states and 3881 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:47:26,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:28,069 INFO L93 Difference]: Finished difference Result 3798 states and 5980 transitions. [2023-02-16 00:47:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 00:47:28,070 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-02-16 00:47:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:28,084 INFO L225 Difference]: With dead ends: 3798 [2023-02-16 00:47:28,084 INFO L226 Difference]: Without dead ends: 3790 [2023-02-16 00:47:28,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2023-02-16 00:47:28,087 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 2755 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 963 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 963 IncrementalHoareTripleChecker+Valid, 2227 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:28,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2817 Valid, 2975 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2227 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2023-02-16 00:47:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2023-02-16 00:47:28,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3139. [2023-02-16 00:47:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2670 states have (on average 1.4876404494382023) internal successors, (3972), 2741 states have internal predecessors, (3972), 332 states have call successors, (332), 116 states have call predecessors, (332), 136 states have return successors, (525), 292 states have call predecessors, (525), 317 states have call successors, (525) [2023-02-16 00:47:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4829 transitions. [2023-02-16 00:47:28,200 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4829 transitions. Word has length 47 [2023-02-16 00:47:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:28,200 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 4829 transitions. [2023-02-16 00:47:28,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:47:28,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4829 transitions. [2023-02-16 00:47:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 00:47:28,202 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:28,202 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:28,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 00:47:28,202 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:28,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:28,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1518670529, now seen corresponding path program 1 times [2023-02-16 00:47:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:28,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131198155] [2023-02-16 00:47:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:28,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:28,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:28,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:47:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-16 00:47:28,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:28,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:28,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131198155] [2023-02-16 00:47:28,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131198155] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:47:28,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:47:28,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:47:28,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633568160] [2023-02-16 00:47:28,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:47:28,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:47:28,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:47:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:47:28,416 INFO L87 Difference]: Start difference. First operand 3139 states and 4829 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:47:31,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:34,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:34,754 INFO L93 Difference]: Finished difference Result 9987 states and 15921 transitions. [2023-02-16 00:47:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:47:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2023-02-16 00:47:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:34,778 INFO L225 Difference]: With dead ends: 9987 [2023-02-16 00:47:34,778 INFO L226 Difference]: Without dead ends: 7066 [2023-02-16 00:47:34,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:47:34,790 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 1339 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 297 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:34,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2251 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 960 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2023-02-16 00:47:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2023-02-16 00:47:35,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 6230. [2023-02-16 00:47:35,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6230 states, 5324 states have (on average 1.5005634861006762) internal successors, (7989), 5487 states have internal predecessors, (7989), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2023-02-16 00:47:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 9775 transitions. [2023-02-16 00:47:35,093 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 9775 transitions. Word has length 46 [2023-02-16 00:47:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:35,093 INFO L495 AbstractCegarLoop]: Abstraction has 6230 states and 9775 transitions. [2023-02-16 00:47:35,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:47:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 9775 transitions. [2023-02-16 00:47:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 00:47:35,095 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:35,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:35,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 00:47:35,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2006170664, now seen corresponding path program 1 times [2023-02-16 00:47:35,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:35,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425002073] [2023-02-16 00:47:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:35,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:35,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:35,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:47:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:35,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425002073] [2023-02-16 00:47:35,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425002073] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:47:35,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:47:35,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 00:47:35,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226786140] [2023-02-16 00:47:35,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:47:35,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 00:47:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:35,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 00:47:35,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:47:35,393 INFO L87 Difference]: Start difference. First operand 6230 states and 9775 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 00:47:38,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:40,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:42,550 INFO L93 Difference]: Finished difference Result 13181 states and 20868 transitions. [2023-02-16 00:47:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 00:47:42,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2023-02-16 00:47:42,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:42,580 INFO L225 Difference]: With dead ends: 13181 [2023-02-16 00:47:42,580 INFO L226 Difference]: Without dead ends: 7261 [2023-02-16 00:47:42,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:47:42,651 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 2253 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 605 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:42,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 2158 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1249 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2023-02-16 00:47:42,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2023-02-16 00:47:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6221. [2023-02-16 00:47:42,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 5315 states have (on average 1.4991533396048917) internal successors, (7968), 5478 states have internal predecessors, (7968), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2023-02-16 00:47:42,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9754 transitions. [2023-02-16 00:47:42,938 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9754 transitions. Word has length 46 [2023-02-16 00:47:42,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:42,939 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9754 transitions. [2023-02-16 00:47:42,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 4 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 00:47:42,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9754 transitions. [2023-02-16 00:47:42,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 00:47:42,941 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:42,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:42,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-16 00:47:42,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash -703618871, now seen corresponding path program 1 times [2023-02-16 00:47:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:42,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155218703] [2023-02-16 00:47:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:42,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:43,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:43,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:47:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-16 00:47:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:47:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:43,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:43,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:43,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155218703] [2023-02-16 00:47:43,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155218703] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:47:43,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:47:43,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 00:47:43,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232141439] [2023-02-16 00:47:43,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:47:43,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:47:43,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:43,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:47:43,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:47:43,331 INFO L87 Difference]: Start difference. First operand 6221 states and 9754 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:47:47,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:49,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:49,506 INFO L93 Difference]: Finished difference Result 7131 states and 11388 transitions. [2023-02-16 00:47:49,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 00:47:49,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2023-02-16 00:47:49,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:49,522 INFO L225 Difference]: With dead ends: 7131 [2023-02-16 00:47:49,523 INFO L226 Difference]: Without dead ends: 7126 [2023-02-16 00:47:49,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2023-02-16 00:47:49,525 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 2552 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 826 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2614 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:49,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2614 Valid, 2921 Invalid, 3048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 2221 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2023-02-16 00:47:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2023-02-16 00:47:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6221. [2023-02-16 00:47:49,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6221 states, 5315 states have (on average 1.4989651928504233) internal successors, (7967), 5478 states have internal predecessors, (7967), 647 states have call successors, (647), 214 states have call predecessors, (647), 258 states have return successors, (1139), 551 states have call predecessors, (1139), 635 states have call successors, (1139) [2023-02-16 00:47:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9753 transitions. [2023-02-16 00:47:49,810 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9753 transitions. Word has length 48 [2023-02-16 00:47:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:49,811 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9753 transitions. [2023-02-16 00:47:49,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:47:49,811 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9753 transitions. [2023-02-16 00:47:49,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-16 00:47:49,812 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:49,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:49,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-16 00:47:49,812 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:49,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:49,813 INFO L85 PathProgramCache]: Analyzing trace with hash -611856162, now seen corresponding path program 1 times [2023-02-16 00:47:49,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:49,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185121717] [2023-02-16 00:47:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:49,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:50,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-16 00:47:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:50,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-16 00:47:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:50,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:47:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:50,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:50,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185121717] [2023-02-16 00:47:50,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185121717] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:47:50,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:47:50,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 00:47:50,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202336942] [2023-02-16 00:47:50,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:47:50,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 00:47:50,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 00:47:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-16 00:47:50,279 INFO L87 Difference]: Start difference. First operand 6221 states and 9753 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:47:54,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:56,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:47:57,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:47:57,563 INFO L93 Difference]: Finished difference Result 13280 states and 21298 transitions. [2023-02-16 00:47:57,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 00:47:57,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2023-02-16 00:47:57,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:47:57,583 INFO L225 Difference]: With dead ends: 13280 [2023-02-16 00:47:57,584 INFO L226 Difference]: Without dead ends: 7024 [2023-02-16 00:47:57,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-02-16 00:47:57,610 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 690 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 228 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1853 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-02-16 00:47:57,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2846 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1853 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2023-02-16 00:47:57,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2023-02-16 00:47:57,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6248. [2023-02-16 00:47:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6248 states, 5340 states have (on average 1.496629213483146) internal successors, (7992), 5505 states have internal predecessors, (7992), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-16 00:47:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 9783 transitions. [2023-02-16 00:47:57,892 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 9783 transitions. Word has length 49 [2023-02-16 00:47:57,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:47:57,892 INFO L495 AbstractCegarLoop]: Abstraction has 6248 states and 9783 transitions. [2023-02-16 00:47:57,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 00:47:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 9783 transitions. [2023-02-16 00:47:57,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-16 00:47:57,894 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:47:57,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:47:57,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-16 00:47:57,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:47:57,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:47:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1052684790, now seen corresponding path program 1 times [2023-02-16 00:47:57,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:47:57,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614122268] [2023-02-16 00:47:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:57,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:47:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:58,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:47:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:58,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 00:47:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-16 00:47:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:58,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:47:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:58,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:47:58,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614122268] [2023-02-16 00:47:58,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614122268] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:47:58,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978001777] [2023-02-16 00:47:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:47:58,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:47:58,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:47:58,416 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) [2023-02-16 00:47:58,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:47:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:47:59,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 00:47:59,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:47:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:59,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:47:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:47:59,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978001777] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:47:59,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:47:59,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-02-16 00:47:59,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047376457] [2023-02-16 00:47:59,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:47:59,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 00:47:59,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:47:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 00:47:59,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:47:59,272 INFO L87 Difference]: Start difference. First operand 6248 states and 9783 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:48:03,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:48:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:48:04,528 INFO L93 Difference]: Finished difference Result 13331 states and 21354 transitions. [2023-02-16 00:48:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-16 00:48:04,531 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2023-02-16 00:48:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:48:04,552 INFO L225 Difference]: With dead ends: 13331 [2023-02-16 00:48:04,552 INFO L226 Difference]: Without dead ends: 7047 [2023-02-16 00:48:04,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-02-16 00:48:04,572 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1088 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 425 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-02-16 00:48:04,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 3631 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2172 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-02-16 00:48:04,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7047 states. [2023-02-16 00:48:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7047 to 6271. [2023-02-16 00:48:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6271 states, 5363 states have (on average 1.4944993473801977) internal successors, (8015), 5528 states have internal predecessors, (8015), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-16 00:48:04,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9806 transitions. [2023-02-16 00:48:04,908 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9806 transitions. Word has length 50 [2023-02-16 00:48:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:48:04,908 INFO L495 AbstractCegarLoop]: Abstraction has 6271 states and 9806 transitions. [2023-02-16 00:48:04,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:48:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9806 transitions. [2023-02-16 00:48:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-16 00:48:04,909 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:48:04,910 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:48:04,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 00:48:05,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-16 00:48:05,121 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:48:05,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:48:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1656968926, now seen corresponding path program 2 times [2023-02-16 00:48:05,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:48:05,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794455810] [2023-02-16 00:48:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:05,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:48:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:05,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-16 00:48:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:05,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-16 00:48:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:48:05,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:48:05,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794455810] [2023-02-16 00:48:05,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794455810] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:48:05,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637207083] [2023-02-16 00:48:05,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:48:05,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:48:05,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:48:05,813 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) [2023-02-16 00:48:05,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:48:08,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:48:08,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:48:08,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 2430 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-16 00:48:08,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:48:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:48:08,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:48:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:48:08,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637207083] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:48:08,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:48:08,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2023-02-16 00:48:08,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529559109] [2023-02-16 00:48:08,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:48:08,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-16 00:48:08,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:48:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-16 00:48:08,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-02-16 00:48:08,558 INFO L87 Difference]: Start difference. First operand 6271 states and 9806 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:48:15,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:48:16,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:48:16,350 INFO L93 Difference]: Finished difference Result 13497 states and 21603 transitions. [2023-02-16 00:48:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-16 00:48:16,351 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 53 [2023-02-16 00:48:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:48:16,373 INFO L225 Difference]: With dead ends: 13497 [2023-02-16 00:48:16,373 INFO L226 Difference]: Without dead ends: 7113 [2023-02-16 00:48:16,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2023-02-16 00:48:16,395 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1115 mSDsluCounter, 3587 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 433 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 4151 SdHoareTripleChecker+Invalid, 3047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-02-16 00:48:16,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 4151 Invalid, 3047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2613 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2023-02-16 00:48:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2023-02-16 00:48:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 6337. [2023-02-16 00:48:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6337 states, 5429 states have (on average 1.488487750967029) internal successors, (8081), 5594 states have internal predecessors, (8081), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-16 00:48:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 9872 transitions. [2023-02-16 00:48:16,844 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 9872 transitions. Word has length 53 [2023-02-16 00:48:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:48:16,844 INFO L495 AbstractCegarLoop]: Abstraction has 6337 states and 9872 transitions. [2023-02-16 00:48:16,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 19 states have internal predecessors, (69), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:48:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 9872 transitions. [2023-02-16 00:48:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-16 00:48:16,845 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:48:16,845 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:48:16,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 00:48:17,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 00:48:17,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:48:17,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:48:17,058 INFO L85 PathProgramCache]: Analyzing trace with hash -983008789, now seen corresponding path program 1 times [2023-02-16 00:48:17,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:48:17,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13273743] [2023-02-16 00:48:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:17,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:48:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:17,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:48:17,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-16 00:48:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-16 00:48:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:48:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:48:18,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:48:18,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13273743] [2023-02-16 00:48:18,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13273743] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:48:18,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526441363] [2023-02-16 00:48:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:48:18,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:48:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:48:18,289 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) [2023-02-16 00:48:18,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:48:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:48:19,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-16 00:48:19,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:48:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:48:19,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:48:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:48:20,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526441363] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:48:20,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:48:20,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 41 [2023-02-16 00:48:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348460488] [2023-02-16 00:48:20,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:48:20,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-16 00:48:20,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:48:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-16 00:48:20,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2023-02-16 00:48:20,923 INFO L87 Difference]: Start difference. First operand 6337 states and 9872 transitions. Second operand has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 37 states have internal predecessors, (88), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:48:52,283 WARN L233 SmtUtils]: Spent 13.03s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:49:01,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 00:49:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:49:03,659 INFO L93 Difference]: Finished difference Result 13809 states and 22041 transitions. [2023-02-16 00:49:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-16 00:49:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 37 states have internal predecessors, (88), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2023-02-16 00:49:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:49:03,713 INFO L225 Difference]: With dead ends: 13809 [2023-02-16 00:49:03,714 INFO L226 Difference]: Without dead ends: 7245 [2023-02-16 00:49:03,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=1571, Invalid=5738, Unknown=1, NotChecked=0, Total=7310 [2023-02-16 00:49:03,734 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1187 mSDsluCounter, 8674 mSDsCounter, 0 mSdLazyCounter, 6115 mSolverCounterSat, 463 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1208 SdHoareTripleChecker+Valid, 9236 SdHoareTripleChecker+Invalid, 6579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 6115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-02-16 00:49:03,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1208 Valid, 9236 Invalid, 6579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 6115 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2023-02-16 00:49:03,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2023-02-16 00:49:04,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 6469. [2023-02-16 00:49:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6469 states, 5561 states have (on average 1.4768926452076965) internal successors, (8213), 5726 states have internal predecessors, (8213), 647 states have call successors, (647), 214 states have call predecessors, (647), 260 states have return successors, (1144), 551 states have call predecessors, (1144), 635 states have call successors, (1144) [2023-02-16 00:49:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10004 transitions. [2023-02-16 00:49:04,150 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10004 transitions. Word has length 60 [2023-02-16 00:49:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:49:04,151 INFO L495 AbstractCegarLoop]: Abstraction has 6469 states and 10004 transitions. [2023-02-16 00:49:04,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 37 states have internal predecessors, (88), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:49:04,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10004 transitions. [2023-02-16 00:49:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-16 00:49:04,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:49:04,153 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:49:04,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:49:04,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:49:04,368 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:49:04,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:49:04,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1149216747, now seen corresponding path program 2 times [2023-02-16 00:49:04,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:49:04,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999566932] [2023-02-16 00:49:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:49:04,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:49:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:49:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:49:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:49:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-16 00:49:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:49:06,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-16 00:49:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:49:06,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-16 00:49:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:49:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:49:06,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:49:06,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999566932] [2023-02-16 00:49:06,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999566932] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:49:06,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807594514] [2023-02-16 00:49:06,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:49:06,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:49:06,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:49:06,541 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) [2023-02-16 00:49:06,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:49:10,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:49:10,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:49:10,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-16 00:49:10,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:49:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:49:11,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:49:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:49:14,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807594514] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:49:14,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:49:14,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 26] total 77 [2023-02-16 00:49:14,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104133256] [2023-02-16 00:49:14,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:49:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-02-16 00:49:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:49:14,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-02-16 00:49:14,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1301, Invalid=4551, Unknown=0, NotChecked=0, Total=5852 [2023-02-16 00:49:14,274 INFO L87 Difference]: Start difference. First operand 6469 states and 10004 transitions. Second operand has 77 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 73 states have internal predecessors, (124), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:49:21,447 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 130 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:50:22,859 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 115 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:50:53,580 WARN L233 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 110 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)