./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-simplified/floppy_simpl4.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 1680e665d6c38e33bd93081ad3c7b8b4f909838cd1480382a495b19dd638ce67 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:44:16,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:44:16,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:44:16,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:44:16,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:44:16,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:44:16,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:44:16,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:44:16,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:44:16,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:44:16,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:44:16,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:44:16,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:44:16,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:44:16,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:44:16,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:44:16,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:44:16,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:44:16,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:44:16,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:44:16,281 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:44:16,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:44:16,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:44:16,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:44:16,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:44:16,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:44:16,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:44:16,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:44:16,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:44:16,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:44:16,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:44:16,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:44:16,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:44:16,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:44:16,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:44:16,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:44:16,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:44:16,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:44:16,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:44:16,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:44:16,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:44:16,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:44:16,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:44:16,316 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:44:16,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:44:16,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:44:16,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:44:16,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:44:16,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:44:16,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:44:16,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:44:16,317 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:44:16,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:44:16,317 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:44:16,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:44:16,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:44:16,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:44:16,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:44:16,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:44:16,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:44:16,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:44:16,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:44:16,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:44:16,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:44:16,319 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:44:16,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:44:16,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:44:16,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1680e665d6c38e33bd93081ad3c7b8b4f909838cd1480382a495b19dd638ce67 [2022-07-11 23:44:16,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:44:16,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:44:16,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:44:16,485 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:44:16,485 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:44:16,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c [2022-07-11 23:44:16,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1de451c3/ecdab4704d3041d6ab6c667b720a79b3/FLAG59e3b737b [2022-07-11 23:44:16,958 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:44:16,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c [2022-07-11 23:44:16,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1de451c3/ecdab4704d3041d6ab6c667b720a79b3/FLAG59e3b737b [2022-07-11 23:44:16,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1de451c3/ecdab4704d3041d6ab6c667b720a79b3 [2022-07-11 23:44:16,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:44:16,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:44:16,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:44:16,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:44:16,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:44:16,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:44:16" (1/1) ... [2022-07-11 23:44:16,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@730ee7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:16, skipping insertion in model container [2022-07-11 23:44:16,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:44:16" (1/1) ... [2022-07-11 23:44:16,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:44:17,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:44:17,266 WARN L230 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-simplified/floppy_simpl4.cil-1.c[48581,48594] [2022-07-11 23:44:17,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:44:17,278 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:44:17,369 WARN L230 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-simplified/floppy_simpl4.cil-1.c[48581,48594] [2022-07-11 23:44:17,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:44:17,381 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:44:17,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17 WrapperNode [2022-07-11 23:44:17,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:44:17,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:44:17,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:44:17,383 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:44:17,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,461 INFO L137 Inliner]: procedures = 41, calls = 77, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 1331 [2022-07-11 23:44:17,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:44:17,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:44:17,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:44:17,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:44:17,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,507 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:44:17,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:44:17,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:44:17,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:44:17,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (1/1) ... [2022-07-11 23:44:17,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:44:17,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:44:17,556 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) [2022-07-11 23:44:17,557 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 [2022-07-11 23:44:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:44:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-07-11 23:44:17,589 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-07-11 23:44:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-07-11 23:44:17,589 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-07-11 23:44:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-07-11 23:44:17,589 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-07-11 23:44:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-07-11 23:44:17,589 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-07-11 23:44:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-07-11 23:44:17,589 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-07-11 23:44:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:44:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-07-11 23:44:17,590 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-07-11 23:44:17,590 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-07-11 23:44:17,590 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-07-11 23:44:17,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:44:17,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:44:17,800 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:44:17,801 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:44:17,806 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:17,849 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-07-11 23:44:17,849 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-07-11 23:44:17,850 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:17,855 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-07-11 23:44:17,856 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-07-11 23:44:17,863 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:17,867 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:17,871 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:17,873 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:17,875 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:17,876 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:17,879 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:18,276 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume !false; [2022-07-11 23:44:18,276 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##180: assume false; [2022-07-11 23:44:18,276 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##181: assume !false; [2022-07-11 23:44:18,276 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume !false; [2022-07-11 23:44:18,277 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume false; [2022-07-11 23:44:18,277 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##127: assume !false; [2022-07-11 23:44:18,277 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-07-11 23:44:18,277 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-07-11 23:44:18,277 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2022-07-11 23:44:18,277 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2022-07-11 23:44:18,277 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##169: assume false; [2022-07-11 23:44:18,277 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##236: assume !false; [2022-07-11 23:44:18,277 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume false; [2022-07-11 23:44:18,278 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##126: assume false; [2022-07-11 23:44:18,281 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:18,312 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2022-07-11 23:44:18,313 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2022-07-11 23:44:18,316 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:18,317 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:18,317 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:44:18,342 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-07-11 23:44:18,343 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-07-11 23:44:18,343 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-07-11 23:44:18,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-07-11 23:44:18,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-07-11 23:44:18,344 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-07-11 23:44:18,352 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:44:18,361 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:44:18,361 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-11 23:44:18,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:44:18 BoogieIcfgContainer [2022-07-11 23:44:18,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:44:18,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:44:18,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:44:18,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:44:18,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:44:16" (1/3) ... [2022-07-11 23:44:18,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159068eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:44:18, skipping insertion in model container [2022-07-11 23:44:18,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:44:17" (2/3) ... [2022-07-11 23:44:18,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@159068eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:44:18, skipping insertion in model container [2022-07-11 23:44:18,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:44:18" (3/3) ... [2022-07-11 23:44:18,369 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2022-07-11 23:44:18,379 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:44:18,380 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:44:18,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:44:18,432 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7f701c6c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a00ac4a [2022-07-11 23:44:18,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:44:18,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 319 states, 259 states have (on average 1.5212355212355213) internal successors, (394), 285 states have internal predecessors, (394), 51 states have call successors, (51), 7 states have call predecessors, (51), 7 states have return successors, (51), 45 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-11 23:44:18,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-11 23:44:18,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:18,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:18,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash -567536429, now seen corresponding path program 1 times [2022-07-11 23:44:18,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:18,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375027226] [2022-07-11 23:44:18,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:18,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:18,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:18,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375027226] [2022-07-11 23:44:18,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375027226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:18,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:18,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:44:18,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762811987] [2022-07-11 23:44:18,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:18,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:44:18,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:18,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:44:18,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:18,617 INFO L87 Difference]: Start difference. First operand has 319 states, 259 states have (on average 1.5212355212355213) internal successors, (394), 285 states have internal predecessors, (394), 51 states have call successors, (51), 7 states have call predecessors, (51), 7 states have return successors, (51), 45 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:18,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:18,723 INFO L93 Difference]: Finished difference Result 512 states and 797 transitions. [2022-07-11 23:44:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:44:18,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-11 23:44:18,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:18,733 INFO L225 Difference]: With dead ends: 512 [2022-07-11 23:44:18,733 INFO L226 Difference]: Without dead ends: 312 [2022-07-11 23:44:18,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:18,740 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 261 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:18,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 630 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:44:18,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-07-11 23:44:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2022-07-11 23:44:18,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 254 states have (on average 1.4803149606299213) internal successors, (376), 278 states have internal predecessors, (376), 51 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-11 23:44:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 456 transitions. [2022-07-11 23:44:18,800 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 456 transitions. Word has length 13 [2022-07-11 23:44:18,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:18,801 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 456 transitions. [2022-07-11 23:44:18,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:18,801 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 456 transitions. [2022-07-11 23:44:18,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-11 23:44:18,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:18,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:18,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:44:18,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:18,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1839207005, now seen corresponding path program 1 times [2022-07-11 23:44:18,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:18,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876432015] [2022-07-11 23:44:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:18,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:18,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876432015] [2022-07-11 23:44:18,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876432015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:18,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:18,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:44:18,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126987611] [2022-07-11 23:44:18,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:18,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:44:18,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:18,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:44:18,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:18,895 INFO L87 Difference]: Start difference. First operand 312 states and 456 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:19,038 INFO L93 Difference]: Finished difference Result 564 states and 814 transitions. [2022-07-11 23:44:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:44:19,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-11 23:44:19,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:19,044 INFO L225 Difference]: With dead ends: 564 [2022-07-11 23:44:19,044 INFO L226 Difference]: Without dead ends: 432 [2022-07-11 23:44:19,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:19,050 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 362 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:19,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 761 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:44:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-07-11 23:44:19,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 413. [2022-07-11 23:44:19,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 354 states have (on average 1.4039548022598871) internal successors, (497), 358 states have internal predecessors, (497), 49 states have call successors, (49), 11 states have call predecessors, (49), 9 states have return successors, (52), 44 states have call predecessors, (52), 37 states have call successors, (52) [2022-07-11 23:44:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 598 transitions. [2022-07-11 23:44:19,094 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 598 transitions. Word has length 16 [2022-07-11 23:44:19,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:19,095 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 598 transitions. [2022-07-11 23:44:19,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:19,095 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 598 transitions. [2022-07-11 23:44:19,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-11 23:44:19,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:19,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:19,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 23:44:19,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:19,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash -866854956, now seen corresponding path program 1 times [2022-07-11 23:44:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:19,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308706010] [2022-07-11 23:44:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:19,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:19,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308706010] [2022-07-11 23:44:19,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308706010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:19,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:19,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:44:19,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358359072] [2022-07-11 23:44:19,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:19,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:44:19,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:44:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:19,155 INFO L87 Difference]: Start difference. First operand 413 states and 598 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:19,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:19,183 INFO L93 Difference]: Finished difference Result 520 states and 737 transitions. [2022-07-11 23:44:19,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:44:19,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-11 23:44:19,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:19,187 INFO L225 Difference]: With dead ends: 520 [2022-07-11 23:44:19,187 INFO L226 Difference]: Without dead ends: 499 [2022-07-11 23:44:19,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:19,189 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 407 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:19,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 545 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:44:19,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-07-11 23:44:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 467. [2022-07-11 23:44:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 401 states have (on average 1.399002493765586) internal successors, (561), 412 states have internal predecessors, (561), 51 states have call successors, (51), 14 states have call predecessors, (51), 14 states have return successors, (59), 43 states have call predecessors, (59), 41 states have call successors, (59) [2022-07-11 23:44:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 671 transitions. [2022-07-11 23:44:19,215 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 671 transitions. Word has length 19 [2022-07-11 23:44:19,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:19,216 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 671 transitions. [2022-07-11 23:44:19,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 671 transitions. [2022-07-11 23:44:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-11 23:44:19,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:19,221 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] [2022-07-11 23:44:19,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 23:44:19,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash 122564209, now seen corresponding path program 1 times [2022-07-11 23:44:19,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:19,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784818933] [2022-07-11 23:44:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:19,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:19,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:19,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784818933] [2022-07-11 23:44:19,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784818933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:19,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:19,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:44:19,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698801570] [2022-07-11 23:44:19,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:19,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:44:19,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:19,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:44:19,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:19,294 INFO L87 Difference]: Start difference. First operand 467 states and 671 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:19,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:19,348 INFO L93 Difference]: Finished difference Result 877 states and 1248 transitions. [2022-07-11 23:44:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:44:19,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-11 23:44:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:19,353 INFO L225 Difference]: With dead ends: 877 [2022-07-11 23:44:19,353 INFO L226 Difference]: Without dead ends: 646 [2022-07-11 23:44:19,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:19,359 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 397 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:19,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 658 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:44:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-07-11 23:44:19,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 621. [2022-07-11 23:44:19,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 538 states have (on average 1.3866171003717471) internal successors, (746), 546 states have internal predecessors, (746), 61 states have call successors, (61), 22 states have call predecessors, (61), 21 states have return successors, (80), 55 states have call predecessors, (80), 53 states have call successors, (80) [2022-07-11 23:44:19,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 887 transitions. [2022-07-11 23:44:19,394 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 887 transitions. Word has length 22 [2022-07-11 23:44:19,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:19,394 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 887 transitions. [2022-07-11 23:44:19,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:19,398 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 887 transitions. [2022-07-11 23:44:19,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-11 23:44:19,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:19,399 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] [2022-07-11 23:44:19,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-11 23:44:19,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:19,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:19,400 INFO L85 PathProgramCache]: Analyzing trace with hash -826632207, now seen corresponding path program 1 times [2022-07-11 23:44:19,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:19,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641170015] [2022-07-11 23:44:19,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:19,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-11 23:44:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:19,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-11 23:44:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:19,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:19,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641170015] [2022-07-11 23:44:19,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641170015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:19,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:19,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:44:19,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556047115] [2022-07-11 23:44:19,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:19,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:44:19,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:44:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:19,465 INFO L87 Difference]: Start difference. First operand 621 states and 887 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-07-11 23:44:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:19,721 INFO L93 Difference]: Finished difference Result 690 states and 979 transitions. [2022-07-11 23:44:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:44:19,722 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 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 29 [2022-07-11 23:44:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:19,726 INFO L225 Difference]: With dead ends: 690 [2022-07-11 23:44:19,726 INFO L226 Difference]: Without dead ends: 685 [2022-07-11 23:44:19,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:44:19,727 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 118 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:19,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1263 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-07-11 23:44:19,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 662. [2022-07-11 23:44:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 577 states have (on average 1.3795493934142113) internal successors, (796), 585 states have internal predecessors, (796), 61 states have call successors, (61), 22 states have call predecessors, (61), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2022-07-11 23:44:19,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 942 transitions. [2022-07-11 23:44:19,753 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 942 transitions. Word has length 29 [2022-07-11 23:44:19,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:19,754 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 942 transitions. [2022-07-11 23:44:19,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-07-11 23:44:19,754 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 942 transitions. [2022-07-11 23:44:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-11 23:44:19,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:19,755 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] [2022-07-11 23:44:19,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-11 23:44:19,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:19,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash -205375591, now seen corresponding path program 1 times [2022-07-11 23:44:19,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:19,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996411543] [2022-07-11 23:44:19,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:19,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:19,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:19,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996411543] [2022-07-11 23:44:19,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996411543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:19,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:19,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:44:19,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095795612] [2022-07-11 23:44:19,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:19,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:44:19,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:19,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:44:19,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:19,785 INFO L87 Difference]: Start difference. First operand 662 states and 942 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:19,845 INFO L93 Difference]: Finished difference Result 677 states and 962 transitions. [2022-07-11 23:44:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:44:19,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-11 23:44:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:19,848 INFO L225 Difference]: With dead ends: 677 [2022-07-11 23:44:19,848 INFO L226 Difference]: Without dead ends: 674 [2022-07-11 23:44:19,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:19,850 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 20 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:19,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 784 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:44:19,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-07-11 23:44:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 673. [2022-07-11 23:44:19,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 588 states have (on average 1.3775510204081634) internal successors, (810), 595 states have internal predecessors, (810), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2022-07-11 23:44:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 956 transitions. [2022-07-11 23:44:19,874 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 956 transitions. Word has length 28 [2022-07-11 23:44:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:19,875 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 956 transitions. [2022-07-11 23:44:19,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 956 transitions. [2022-07-11 23:44:19,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-11 23:44:19,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:19,876 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] [2022-07-11 23:44:19,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-11 23:44:19,876 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:19,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1532855089, now seen corresponding path program 1 times [2022-07-11 23:44:19,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:19,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495730429] [2022-07-11 23:44:19,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:19,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-11 23:44:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-11 23:44:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:19,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:19,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495730429] [2022-07-11 23:44:19,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495730429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:19,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:19,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-11 23:44:19,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020881605] [2022-07-11 23:44:19,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:19,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:44:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:19,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:44:19,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:19,982 INFO L87 Difference]: Start difference. First operand 673 states and 956 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:20,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:20,318 INFO L93 Difference]: Finished difference Result 705 states and 995 transitions. [2022-07-11 23:44:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:44:20,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-07-11 23:44:20,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:20,323 INFO L225 Difference]: With dead ends: 705 [2022-07-11 23:44:20,323 INFO L226 Difference]: Without dead ends: 696 [2022-07-11 23:44:20,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:44:20,325 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 652 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:20,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1206 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:44:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-07-11 23:44:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 673. [2022-07-11 23:44:20,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 588 states have (on average 1.3741496598639455) internal successors, (808), 595 states have internal predecessors, (808), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2022-07-11 23:44:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 954 transitions. [2022-07-11 23:44:20,358 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 954 transitions. Word has length 31 [2022-07-11 23:44:20,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:20,359 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 954 transitions. [2022-07-11 23:44:20,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:20,359 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 954 transitions. [2022-07-11 23:44:20,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-11 23:44:20,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:20,361 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] [2022-07-11 23:44:20,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-11 23:44:20,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:20,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:20,362 INFO L85 PathProgramCache]: Analyzing trace with hash -614943130, now seen corresponding path program 1 times [2022-07-11 23:44:20,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:20,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202707284] [2022-07-11 23:44:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:20,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:20,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-11 23:44:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:20,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-11 23:44:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:20,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:20,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202707284] [2022-07-11 23:44:20,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202707284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:20,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:20,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-11 23:44:20,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115470357] [2022-07-11 23:44:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:20,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:44:20,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:20,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:44:20,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:20,428 INFO L87 Difference]: Start difference. First operand 673 states and 954 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:20,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:20,865 INFO L93 Difference]: Finished difference Result 705 states and 993 transitions. [2022-07-11 23:44:20,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:44:20,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2022-07-11 23:44:20,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:20,868 INFO L225 Difference]: With dead ends: 705 [2022-07-11 23:44:20,868 INFO L226 Difference]: Without dead ends: 696 [2022-07-11 23:44:20,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:44:20,869 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 570 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:20,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1709 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:44:20,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2022-07-11 23:44:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 673. [2022-07-11 23:44:20,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 588 states have (on average 1.370748299319728) internal successors, (806), 595 states have internal predecessors, (806), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (85), 55 states have call predecessors, (85), 53 states have call successors, (85) [2022-07-11 23:44:20,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 952 transitions. [2022-07-11 23:44:20,888 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 952 transitions. Word has length 32 [2022-07-11 23:44:20,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:20,888 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 952 transitions. [2022-07-11 23:44:20,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:20,889 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 952 transitions. [2022-07-11 23:44:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-11 23:44:20,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:20,889 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] [2022-07-11 23:44:20,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-11 23:44:20,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:20,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1828011142, now seen corresponding path program 1 times [2022-07-11 23:44:20,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:20,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000853832] [2022-07-11 23:44:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:20,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:20,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:20,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-11 23:44:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:20,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-11 23:44:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:20,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000853832] [2022-07-11 23:44:20,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000853832] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:20,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:20,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:20,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321954967] [2022-07-11 23:44:20,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:20,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:20,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:20,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:20,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:20,941 INFO L87 Difference]: Start difference. First operand 673 states and 952 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-11 23:44:21,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:21,229 INFO L93 Difference]: Finished difference Result 705 states and 991 transitions. [2022-07-11 23:44:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-11 23:44:21,229 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2022-07-11 23:44:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:21,232 INFO L225 Difference]: With dead ends: 705 [2022-07-11 23:44:21,232 INFO L226 Difference]: Without dead ends: 690 [2022-07-11 23:44:21,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:21,233 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 322 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:21,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1739 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:44:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-07-11 23:44:21,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 671. [2022-07-11 23:44:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 587 states have (on average 1.3696763202725724) internal successors, (804), 594 states have internal predecessors, (804), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (84), 54 states have call predecessors, (84), 52 states have call successors, (84) [2022-07-11 23:44:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 948 transitions. [2022-07-11 23:44:21,252 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 948 transitions. Word has length 33 [2022-07-11 23:44:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:21,252 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 948 transitions. [2022-07-11 23:44:21,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-11 23:44:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 948 transitions. [2022-07-11 23:44:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-11 23:44:21,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:21,253 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] [2022-07-11 23:44:21,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-11 23:44:21,253 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:21,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:21,254 INFO L85 PathProgramCache]: Analyzing trace with hash 997010243, now seen corresponding path program 1 times [2022-07-11 23:44:21,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:21,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459563747] [2022-07-11 23:44:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:21,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-11 23:44:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:21,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-11 23:44:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:21,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:21,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:21,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459563747] [2022-07-11 23:44:21,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459563747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:21,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:21,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:21,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24374594] [2022-07-11 23:44:21,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:21,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:21,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:21,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:21,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:21,291 INFO L87 Difference]: Start difference. First operand 671 states and 948 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-11 23:44:21,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:21,533 INFO L93 Difference]: Finished difference Result 703 states and 987 transitions. [2022-07-11 23:44:21,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-11 23:44:21,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-11 23:44:21,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:21,536 INFO L225 Difference]: With dead ends: 703 [2022-07-11 23:44:21,536 INFO L226 Difference]: Without dead ends: 683 [2022-07-11 23:44:21,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:21,537 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 394 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:21,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1444 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:21,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-07-11 23:44:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 664. [2022-07-11 23:44:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 583 states have (on average 1.3704974271012007) internal successors, (799), 590 states have internal predecessors, (799), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (82), 52 states have call predecessors, (82), 50 states have call successors, (82) [2022-07-11 23:44:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 939 transitions. [2022-07-11 23:44:21,559 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 939 transitions. Word has length 32 [2022-07-11 23:44:21,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:21,559 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 939 transitions. [2022-07-11 23:44:21,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-11 23:44:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 939 transitions. [2022-07-11 23:44:21,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-11 23:44:21,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:21,560 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] [2022-07-11 23:44:21,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-11 23:44:21,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:21,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:21,561 INFO L85 PathProgramCache]: Analyzing trace with hash -594269975, now seen corresponding path program 1 times [2022-07-11 23:44:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:21,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742947877] [2022-07-11 23:44:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:21,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:21,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:21,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742947877] [2022-07-11 23:44:21,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742947877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:21,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:21,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:44:21,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465678131] [2022-07-11 23:44:21,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:21,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:44:21,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:21,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:44:21,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:21,585 INFO L87 Difference]: Start difference. First operand 664 states and 939 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:21,609 INFO L93 Difference]: Finished difference Result 695 states and 976 transitions. [2022-07-11 23:44:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:44:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-11 23:44:21,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:21,613 INFO L225 Difference]: With dead ends: 695 [2022-07-11 23:44:21,613 INFO L226 Difference]: Without dead ends: 653 [2022-07-11 23:44:21,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:21,614 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 87 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:21,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 882 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:44:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2022-07-11 23:44:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 648. [2022-07-11 23:44:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 568 states have (on average 1.3626760563380282) internal successors, (774), 575 states have internal predecessors, (774), 58 states have call successors, (58), 22 states have call predecessors, (58), 21 states have return successors, (81), 51 states have call predecessors, (81), 50 states have call successors, (81) [2022-07-11 23:44:21,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 913 transitions. [2022-07-11 23:44:21,633 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 913 transitions. Word has length 30 [2022-07-11 23:44:21,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:21,633 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 913 transitions. [2022-07-11 23:44:21,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 913 transitions. [2022-07-11 23:44:21,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-11 23:44:21,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:21,634 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] [2022-07-11 23:44:21,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-11 23:44:21,635 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:21,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:21,635 INFO L85 PathProgramCache]: Analyzing trace with hash -444205772, now seen corresponding path program 1 times [2022-07-11 23:44:21,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:21,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348024561] [2022-07-11 23:44:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:21,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:21,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:21,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348024561] [2022-07-11 23:44:21,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348024561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:21,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:21,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:44:21,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445831460] [2022-07-11 23:44:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:21,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:44:21,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:21,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:44:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:44:21,658 INFO L87 Difference]: Start difference. First operand 648 states and 913 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:21,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:21,694 INFO L93 Difference]: Finished difference Result 684 states and 954 transitions. [2022-07-11 23:44:21,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:44:21,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-07-11 23:44:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:21,696 INFO L225 Difference]: With dead ends: 684 [2022-07-11 23:44:21,696 INFO L226 Difference]: Without dead ends: 664 [2022-07-11 23:44:21,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:21,697 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 27 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:21,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1222 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:44:21,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-11 23:44:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 650. [2022-07-11 23:44:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 570 states have (on average 1.3614035087719298) internal successors, (776), 577 states have internal predecessors, (776), 58 states have call successors, (58), 22 states have call predecessors, (58), 21 states have return successors, (81), 51 states have call predecessors, (81), 50 states have call successors, (81) [2022-07-11 23:44:21,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 915 transitions. [2022-07-11 23:44:21,714 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 915 transitions. Word has length 30 [2022-07-11 23:44:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:21,715 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 915 transitions. [2022-07-11 23:44:21,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:21,715 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 915 transitions. [2022-07-11 23:44:21,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-11 23:44:21,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:21,716 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] [2022-07-11 23:44:21,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-11 23:44:21,716 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:21,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:21,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1157172862, now seen corresponding path program 1 times [2022-07-11 23:44:21,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:21,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623772205] [2022-07-11 23:44:21,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:21,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:21,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:21,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623772205] [2022-07-11 23:44:21,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623772205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:21,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:21,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:44:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344869327] [2022-07-11 23:44:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:21,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:44:21,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:44:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:44:21,738 INFO L87 Difference]: Start difference. First operand 650 states and 915 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:21,790 INFO L93 Difference]: Finished difference Result 686 states and 956 transitions. [2022-07-11 23:44:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:44:21,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-07-11 23:44:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:21,793 INFO L225 Difference]: With dead ends: 686 [2022-07-11 23:44:21,793 INFO L226 Difference]: Without dead ends: 666 [2022-07-11 23:44:21,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:21,794 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 28 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:21,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1226 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:44:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-11 23:44:21,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 650. [2022-07-11 23:44:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 570 states have (on average 1.3614035087719298) internal successors, (776), 577 states have internal predecessors, (776), 58 states have call successors, (58), 22 states have call predecessors, (58), 21 states have return successors, (81), 51 states have call predecessors, (81), 50 states have call successors, (81) [2022-07-11 23:44:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 915 transitions. [2022-07-11 23:44:21,811 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 915 transitions. Word has length 31 [2022-07-11 23:44:21,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:21,811 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 915 transitions. [2022-07-11 23:44:21,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 915 transitions. [2022-07-11 23:44:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-11 23:44:21,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:21,812 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] [2022-07-11 23:44:21,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-11 23:44:21,812 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:21,813 INFO L85 PathProgramCache]: Analyzing trace with hash 791167666, now seen corresponding path program 1 times [2022-07-11 23:44:21,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:21,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981688162] [2022-07-11 23:44:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:21,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:21,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:21,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:21,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981688162] [2022-07-11 23:44:21,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981688162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:21,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:21,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:44:21,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423594212] [2022-07-11 23:44:21,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:21,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:44:21,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:21,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:44:21,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:44:21,839 INFO L87 Difference]: Start difference. First operand 650 states and 915 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:22,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:22,032 INFO L93 Difference]: Finished difference Result 911 states and 1284 transitions. [2022-07-11 23:44:22,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:44:22,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-07-11 23:44:22,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:22,035 INFO L225 Difference]: With dead ends: 911 [2022-07-11 23:44:22,035 INFO L226 Difference]: Without dead ends: 908 [2022-07-11 23:44:22,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:22,036 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 168 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:22,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 1109 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:22,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-07-11 23:44:22,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 729. [2022-07-11 23:44:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 645 states have (on average 1.3705426356589148) internal successors, (884), 653 states have internal predecessors, (884), 60 states have call successors, (60), 24 states have call predecessors, (60), 23 states have return successors, (83), 52 states have call predecessors, (83), 52 states have call successors, (83) [2022-07-11 23:44:22,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1027 transitions. [2022-07-11 23:44:22,064 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1027 transitions. Word has length 34 [2022-07-11 23:44:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:22,064 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1027 transitions. [2022-07-11 23:44:22,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1027 transitions. [2022-07-11 23:44:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-11 23:44:22,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:22,066 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] [2022-07-11 23:44:22,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-11 23:44:22,066 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:22,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:22,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1366178889, now seen corresponding path program 1 times [2022-07-11 23:44:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:22,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891654648] [2022-07-11 23:44:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:22,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:22,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-11 23:44:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:22,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891654648] [2022-07-11 23:44:22,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891654648] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:22,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:22,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:44:22,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001696802] [2022-07-11 23:44:22,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:22,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:44:22,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:22,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:44:22,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:22,105 INFO L87 Difference]: Start difference. First operand 729 states and 1027 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:22,228 INFO L93 Difference]: Finished difference Result 760 states and 1064 transitions. [2022-07-11 23:44:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:44:22,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2022-07-11 23:44:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:22,232 INFO L225 Difference]: With dead ends: 760 [2022-07-11 23:44:22,232 INFO L226 Difference]: Without dead ends: 744 [2022-07-11 23:44:22,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:44:22,235 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 85 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:22,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1398 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:44:22,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-11 23:44:22,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 727. [2022-07-11 23:44:22,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 644 states have (on average 1.3695652173913044) internal successors, (882), 652 states have internal predecessors, (882), 59 states have call successors, (59), 24 states have call predecessors, (59), 23 states have return successors, (82), 51 states have call predecessors, (82), 51 states have call successors, (82) [2022-07-11 23:44:22,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1023 transitions. [2022-07-11 23:44:22,271 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1023 transitions. Word has length 33 [2022-07-11 23:44:22,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:22,271 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1023 transitions. [2022-07-11 23:44:22,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:22,271 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1023 transitions. [2022-07-11 23:44:22,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 23:44:22,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:22,272 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] [2022-07-11 23:44:22,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-11 23:44:22,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:22,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1481962220, now seen corresponding path program 1 times [2022-07-11 23:44:22,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:22,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145720188] [2022-07-11 23:44:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:22,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:22,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:22,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145720188] [2022-07-11 23:44:22,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145720188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:22,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:22,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:44:22,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560721198] [2022-07-11 23:44:22,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:22,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:44:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:22,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:44:22,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:22,315 INFO L87 Difference]: Start difference. First operand 727 states and 1023 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:22,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:22,596 INFO L93 Difference]: Finished difference Result 1202 states and 1654 transitions. [2022-07-11 23:44:22,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:44:22,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-07-11 23:44:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:22,599 INFO L225 Difference]: With dead ends: 1202 [2022-07-11 23:44:22,599 INFO L226 Difference]: Without dead ends: 756 [2022-07-11 23:44:22,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:22,600 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 724 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:22,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 941 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-07-11 23:44:22,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 718. [2022-07-11 23:44:22,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 635 states have (on average 1.3559055118110237) internal successors, (861), 643 states have internal predecessors, (861), 59 states have call successors, (59), 24 states have call predecessors, (59), 23 states have return successors, (82), 51 states have call predecessors, (82), 51 states have call successors, (82) [2022-07-11 23:44:22,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1002 transitions. [2022-07-11 23:44:22,624 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1002 transitions. Word has length 35 [2022-07-11 23:44:22,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:22,624 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1002 transitions. [2022-07-11 23:44:22,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1002 transitions. [2022-07-11 23:44:22,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 23:44:22,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:22,626 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] [2022-07-11 23:44:22,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-11 23:44:22,626 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:22,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1697508356, now seen corresponding path program 1 times [2022-07-11 23:44:22,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:22,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585332716] [2022-07-11 23:44:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:22,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:22,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-11 23:44:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:22,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:22,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585332716] [2022-07-11 23:44:22,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585332716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:22,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:22,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:44:22,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119763677] [2022-07-11 23:44:22,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:22,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:44:22,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:22,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:44:22,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:22,655 INFO L87 Difference]: Start difference. First operand 718 states and 1002 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:22,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:22,791 INFO L93 Difference]: Finished difference Result 749 states and 1039 transitions. [2022-07-11 23:44:22,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:44:22,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-07-11 23:44:22,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:22,794 INFO L225 Difference]: With dead ends: 749 [2022-07-11 23:44:22,794 INFO L226 Difference]: Without dead ends: 733 [2022-07-11 23:44:22,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:44:22,795 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 85 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:22,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1385 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:44:22,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-07-11 23:44:22,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 716. [2022-07-11 23:44:22,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 634 states have (on average 1.3548895899053628) internal successors, (859), 642 states have internal predecessors, (859), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (81), 50 states have call predecessors, (81), 50 states have call successors, (81) [2022-07-11 23:44:22,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 998 transitions. [2022-07-11 23:44:22,817 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 998 transitions. Word has length 35 [2022-07-11 23:44:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:22,818 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 998 transitions. [2022-07-11 23:44:22,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:22,818 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 998 transitions. [2022-07-11 23:44:22,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-11 23:44:22,819 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:22,819 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] [2022-07-11 23:44:22,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-11 23:44:22,819 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1261225122, now seen corresponding path program 1 times [2022-07-11 23:44:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:22,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865807275] [2022-07-11 23:44:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:22,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:22,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:22,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865807275] [2022-07-11 23:44:22,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865807275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:22,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:22,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:44:22,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55994698] [2022-07-11 23:44:22,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:22,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:44:22,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:22,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:44:22,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:22,851 INFO L87 Difference]: Start difference. First operand 716 states and 998 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:22,903 INFO L93 Difference]: Finished difference Result 1123 states and 1555 transitions. [2022-07-11 23:44:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:44:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-07-11 23:44:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:22,906 INFO L225 Difference]: With dead ends: 1123 [2022-07-11 23:44:22,906 INFO L226 Difference]: Without dead ends: 724 [2022-07-11 23:44:22,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:44:22,907 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 5 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:22,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 772 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:44:22,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-07-11 23:44:22,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2022-07-11 23:44:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 642 states have (on average 1.355140186915888) internal successors, (870), 650 states have internal predecessors, (870), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (81), 50 states have call predecessors, (81), 50 states have call successors, (81) [2022-07-11 23:44:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1009 transitions. [2022-07-11 23:44:22,932 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1009 transitions. Word has length 37 [2022-07-11 23:44:22,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:22,932 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1009 transitions. [2022-07-11 23:44:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:44:22,933 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1009 transitions. [2022-07-11 23:44:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-11 23:44:22,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:22,934 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] [2022-07-11 23:44:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-11 23:44:22,934 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:22,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:22,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1321718994, now seen corresponding path program 1 times [2022-07-11 23:44:22,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:22,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756375444] [2022-07-11 23:44:22,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:22,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:22,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-11 23:44:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:22,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:22,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756375444] [2022-07-11 23:44:22,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756375444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:22,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:22,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-11 23:44:22,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529234403] [2022-07-11 23:44:22,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:22,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 23:44:22,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:22,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 23:44:22,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:44:22,966 INFO L87 Difference]: Start difference. First operand 724 states and 1009 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:23,168 INFO L93 Difference]: Finished difference Result 749 states and 1036 transitions. [2022-07-11 23:44:23,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:44:23,168 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-07-11 23:44:23,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:23,171 INFO L225 Difference]: With dead ends: 749 [2022-07-11 23:44:23,171 INFO L226 Difference]: Without dead ends: 731 [2022-07-11 23:44:23,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:23,172 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 96 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:23,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1706 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-07-11 23:44:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 724. [2022-07-11 23:44:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 642 states have (on average 1.3364485981308412) internal successors, (858), 650 states have internal predecessors, (858), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (81), 50 states have call predecessors, (81), 50 states have call successors, (81) [2022-07-11 23:44:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 997 transitions. [2022-07-11 23:44:23,200 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 997 transitions. Word has length 38 [2022-07-11 23:44:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:23,200 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 997 transitions. [2022-07-11 23:44:23,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 997 transitions. [2022-07-11 23:44:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-11 23:44:23,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:23,201 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] [2022-07-11 23:44:23,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-11 23:44:23,202 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:23,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -257120717, now seen corresponding path program 1 times [2022-07-11 23:44:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:23,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574411802] [2022-07-11 23:44:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-11 23:44:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:23,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:23,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574411802] [2022-07-11 23:44:23,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574411802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:23,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:23,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:23,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632444644] [2022-07-11 23:44:23,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:23,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:23,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:23,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:23,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:23,261 INFO L87 Difference]: Start difference. First operand 724 states and 997 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:23,544 INFO L93 Difference]: Finished difference Result 813 states and 1107 transitions. [2022-07-11 23:44:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-11 23:44:23,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-07-11 23:44:23,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:23,547 INFO L225 Difference]: With dead ends: 813 [2022-07-11 23:44:23,547 INFO L226 Difference]: Without dead ends: 744 [2022-07-11 23:44:23,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-07-11 23:44:23,549 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 602 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:23,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1159 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-11 23:44:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 734. [2022-07-11 23:44:23,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 649 states have (on average 1.3312788906009245) internal successors, (864), 660 states have internal predecessors, (864), 58 states have call successors, (58), 24 states have call predecessors, (58), 26 states have return successors, (85), 50 states have call predecessors, (85), 50 states have call successors, (85) [2022-07-11 23:44:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1007 transitions. [2022-07-11 23:44:23,577 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1007 transitions. Word has length 38 [2022-07-11 23:44:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:23,578 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 1007 transitions. [2022-07-11 23:44:23,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:23,578 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1007 transitions. [2022-07-11 23:44:23,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 23:44:23,579 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:23,579 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] [2022-07-11 23:44:23,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-11 23:44:23,580 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:23,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:23,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1774407709, now seen corresponding path program 1 times [2022-07-11 23:44:23,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:23,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591771948] [2022-07-11 23:44:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:23,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:23,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-11 23:44:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:23,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:23,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591771948] [2022-07-11 23:44:23,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591771948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:23,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:23,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943548026] [2022-07-11 23:44:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:23,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:23,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:23,626 INFO L87 Difference]: Start difference. First operand 734 states and 1007 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:23,846 INFO L93 Difference]: Finished difference Result 754 states and 1027 transitions. [2022-07-11 23:44:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-11 23:44:23,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-07-11 23:44:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:23,849 INFO L225 Difference]: With dead ends: 754 [2022-07-11 23:44:23,849 INFO L226 Difference]: Without dead ends: 732 [2022-07-11 23:44:23,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:44:23,850 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 329 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:23,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 1735 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:23,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-07-11 23:44:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 726. [2022-07-11 23:44:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 642 states have (on average 1.3302180685358256) internal successors, (854), 653 states have internal predecessors, (854), 57 states have call successors, (57), 24 states have call predecessors, (57), 26 states have return successors, (84), 49 states have call predecessors, (84), 49 states have call successors, (84) [2022-07-11 23:44:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 995 transitions. [2022-07-11 23:44:23,879 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 995 transitions. Word has length 39 [2022-07-11 23:44:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:23,879 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 995 transitions. [2022-07-11 23:44:23,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 995 transitions. [2022-07-11 23:44:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 23:44:23,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:23,880 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] [2022-07-11 23:44:23,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-11 23:44:23,881 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash 778478368, now seen corresponding path program 1 times [2022-07-11 23:44:23,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:23,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336409743] [2022-07-11 23:44:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:23,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:23,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:23,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:23,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336409743] [2022-07-11 23:44:23,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336409743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:23,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:23,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:23,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642379454] [2022-07-11 23:44:23,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:23,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:23,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:23,920 INFO L87 Difference]: Start difference. First operand 726 states and 995 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:24,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:24,148 INFO L93 Difference]: Finished difference Result 793 states and 1071 transitions. [2022-07-11 23:44:24,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:24,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-07-11 23:44:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:24,152 INFO L225 Difference]: With dead ends: 793 [2022-07-11 23:44:24,152 INFO L226 Difference]: Without dead ends: 748 [2022-07-11 23:44:24,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-11 23:44:24,153 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 367 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:24,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1650 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:24,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-07-11 23:44:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 713. [2022-07-11 23:44:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 630 states have (on average 1.326984126984127) internal successors, (836), 641 states have internal predecessors, (836), 56 states have call successors, (56), 24 states have call predecessors, (56), 26 states have return successors, (83), 48 states have call predecessors, (83), 48 states have call successors, (83) [2022-07-11 23:44:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 975 transitions. [2022-07-11 23:44:24,178 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 975 transitions. Word has length 39 [2022-07-11 23:44:24,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:24,179 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 975 transitions. [2022-07-11 23:44:24,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 975 transitions. [2022-07-11 23:44:24,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 23:44:24,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:24,180 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] [2022-07-11 23:44:24,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-11 23:44:24,180 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:24,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:24,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1595982943, now seen corresponding path program 1 times [2022-07-11 23:44:24,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:24,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232749698] [2022-07-11 23:44:24,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:24,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:24,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:24,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232749698] [2022-07-11 23:44:24,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232749698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:24,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:24,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:24,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380685619] [2022-07-11 23:44:24,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:24,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:24,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:24,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:24,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:24,221 INFO L87 Difference]: Start difference. First operand 713 states and 975 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:24,460 INFO L93 Difference]: Finished difference Result 739 states and 1005 transitions. [2022-07-11 23:44:24,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-11 23:44:24,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-07-11 23:44:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:24,462 INFO L225 Difference]: With dead ends: 739 [2022-07-11 23:44:24,462 INFO L226 Difference]: Without dead ends: 716 [2022-07-11 23:44:24,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:24,463 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 58 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:24,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1704 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:24,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-07-11 23:44:24,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 715. [2022-07-11 23:44:24,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 631 states have (on average 1.3264659270998416) internal successors, (837), 643 states have internal predecessors, (837), 56 states have call successors, (56), 24 states have call predecessors, (56), 27 states have return successors, (84), 48 states have call predecessors, (84), 48 states have call successors, (84) [2022-07-11 23:44:24,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 977 transitions. [2022-07-11 23:44:24,486 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 977 transitions. Word has length 39 [2022-07-11 23:44:24,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:24,487 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 977 transitions. [2022-07-11 23:44:24,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:24,487 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 977 transitions. [2022-07-11 23:44:24,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-11 23:44:24,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:24,488 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] [2022-07-11 23:44:24,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-11 23:44:24,488 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:24,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:24,489 INFO L85 PathProgramCache]: Analyzing trace with hash -398634571, now seen corresponding path program 1 times [2022-07-11 23:44:24,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:24,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611229611] [2022-07-11 23:44:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:24,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:24,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-11 23:44:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:24,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:24,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:24,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611229611] [2022-07-11 23:44:24,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611229611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:24,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:24,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:44:24,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276975400] [2022-07-11 23:44:24,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:24,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:44:24,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:24,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:44:24,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:24,519 INFO L87 Difference]: Start difference. First operand 715 states and 977 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:24,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:24,710 INFO L93 Difference]: Finished difference Result 799 states and 1061 transitions. [2022-07-11 23:44:24,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:44:24,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-11 23:44:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:24,713 INFO L225 Difference]: With dead ends: 799 [2022-07-11 23:44:24,713 INFO L226 Difference]: Without dead ends: 537 [2022-07-11 23:44:24,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:24,714 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 484 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:24,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 950 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-07-11 23:44:24,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 496. [2022-07-11 23:44:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 434 states have (on average 1.292626728110599) internal successors, (561), 445 states have internal predecessors, (561), 41 states have call successors, (41), 17 states have call predecessors, (41), 20 states have return successors, (48), 34 states have call predecessors, (48), 33 states have call successors, (48) [2022-07-11 23:44:24,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 650 transitions. [2022-07-11 23:44:24,732 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 650 transitions. Word has length 41 [2022-07-11 23:44:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:24,732 INFO L495 AbstractCegarLoop]: Abstraction has 496 states and 650 transitions. [2022-07-11 23:44:24,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 650 transitions. [2022-07-11 23:44:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-11 23:44:24,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:24,733 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] [2022-07-11 23:44:24,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-11 23:44:24,734 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:24,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:24,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1554772088, now seen corresponding path program 1 times [2022-07-11 23:44:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:24,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187070241] [2022-07-11 23:44:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:24,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:24,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-11 23:44:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:24,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:24,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187070241] [2022-07-11 23:44:24,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187070241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:24,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:24,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:44:24,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383742133] [2022-07-11 23:44:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:24,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:44:24,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:44:24,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:44:24,760 INFO L87 Difference]: Start difference. First operand 496 states and 650 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:24,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:24,926 INFO L93 Difference]: Finished difference Result 647 states and 845 transitions. [2022-07-11 23:44:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:44:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-07-11 23:44:24,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:24,928 INFO L225 Difference]: With dead ends: 647 [2022-07-11 23:44:24,929 INFO L226 Difference]: Without dead ends: 629 [2022-07-11 23:44:24,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:24,929 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 183 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:24,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 978 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:44:24,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-07-11 23:44:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 566. [2022-07-11 23:44:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 497 states have (on average 1.2816901408450705) internal successors, (637), 502 states have internal predecessors, (637), 43 states have call successors, (43), 19 states have call predecessors, (43), 25 states have return successors, (61), 45 states have call predecessors, (61), 35 states have call successors, (61) [2022-07-11 23:44:24,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 741 transitions. [2022-07-11 23:44:24,969 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 741 transitions. Word has length 40 [2022-07-11 23:44:24,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:24,969 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 741 transitions. [2022-07-11 23:44:24,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 741 transitions. [2022-07-11 23:44:24,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-11 23:44:24,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:24,971 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] [2022-07-11 23:44:24,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-11 23:44:24,971 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:24,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2126401672, now seen corresponding path program 1 times [2022-07-11 23:44:24,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:24,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794781481] [2022-07-11 23:44:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-11 23:44:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:25,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:25,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:25,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794781481] [2022-07-11 23:44:25,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794781481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:25,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:25,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-11 23:44:25,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414262604] [2022-07-11 23:44:25,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:25,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 23:44:25,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:25,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 23:44:25,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:44:25,014 INFO L87 Difference]: Start difference. First operand 566 states and 741 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:25,277 INFO L93 Difference]: Finished difference Result 861 states and 1145 transitions. [2022-07-11 23:44:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:44:25,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-07-11 23:44:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:25,280 INFO L225 Difference]: With dead ends: 861 [2022-07-11 23:44:25,280 INFO L226 Difference]: Without dead ends: 562 [2022-07-11 23:44:25,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-07-11 23:44:25,281 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 457 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:25,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1061 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:25,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-11 23:44:25,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 523. [2022-07-11 23:44:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 458 states have (on average 1.2860262008733625) internal successors, (589), 470 states have internal predecessors, (589), 42 states have call successors, (42), 18 states have call predecessors, (42), 22 states have return successors, (51), 35 states have call predecessors, (51), 34 states have call successors, (51) [2022-07-11 23:44:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 682 transitions. [2022-07-11 23:44:25,303 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 682 transitions. Word has length 40 [2022-07-11 23:44:25,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:25,303 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 682 transitions. [2022-07-11 23:44:25,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:25,304 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 682 transitions. [2022-07-11 23:44:25,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-11 23:44:25,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:25,305 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] [2022-07-11 23:44:25,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-11 23:44:25,305 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1406614257, now seen corresponding path program 1 times [2022-07-11 23:44:25,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:25,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118463804] [2022-07-11 23:44:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:25,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:25,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-11 23:44:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:25,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:25,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118463804] [2022-07-11 23:44:25,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118463804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:25,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:25,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-11 23:44:25,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359355877] [2022-07-11 23:44:25,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:25,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:44:25,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:44:25,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:25,345 INFO L87 Difference]: Start difference. First operand 523 states and 682 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:25,622 INFO L93 Difference]: Finished difference Result 549 states and 710 transitions. [2022-07-11 23:44:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:25,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-11 23:44:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:25,625 INFO L225 Difference]: With dead ends: 549 [2022-07-11 23:44:25,625 INFO L226 Difference]: Without dead ends: 545 [2022-07-11 23:44:25,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:44:25,626 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 82 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:25,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 1964 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-07-11 23:44:25,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 529. [2022-07-11 23:44:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 464 states have (on average 1.2823275862068966) internal successors, (595), 476 states have internal predecessors, (595), 42 states have call successors, (42), 18 states have call predecessors, (42), 22 states have return successors, (51), 35 states have call predecessors, (51), 34 states have call successors, (51) [2022-07-11 23:44:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 688 transitions. [2022-07-11 23:44:25,665 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 688 transitions. Word has length 41 [2022-07-11 23:44:25,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:25,665 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 688 transitions. [2022-07-11 23:44:25,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 688 transitions. [2022-07-11 23:44:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-11 23:44:25,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:25,667 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] [2022-07-11 23:44:25,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-11 23:44:25,667 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:25,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:25,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1406337427, now seen corresponding path program 1 times [2022-07-11 23:44:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:25,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615328856] [2022-07-11 23:44:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:25,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-11 23:44:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:25,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:25,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615328856] [2022-07-11 23:44:25,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615328856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:25,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:25,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-11 23:44:25,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565989133] [2022-07-11 23:44:25,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:25,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:44:25,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:25,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:44:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:25,716 INFO L87 Difference]: Start difference. First operand 529 states and 688 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:25,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:25,993 INFO L93 Difference]: Finished difference Result 587 states and 764 transitions. [2022-07-11 23:44:25,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:25,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-07-11 23:44:25,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:25,995 INFO L225 Difference]: With dead ends: 587 [2022-07-11 23:44:25,995 INFO L226 Difference]: Without dead ends: 574 [2022-07-11 23:44:25,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:44:25,996 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 283 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:25,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1830 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-07-11 23:44:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 535. [2022-07-11 23:44:26,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 469 states have (on average 1.279317697228145) internal successors, (600), 482 states have internal predecessors, (600), 42 states have call successors, (42), 18 states have call predecessors, (42), 23 states have return successors, (58), 35 states have call predecessors, (58), 34 states have call successors, (58) [2022-07-11 23:44:26,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 700 transitions. [2022-07-11 23:44:26,019 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 700 transitions. Word has length 41 [2022-07-11 23:44:26,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:26,019 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 700 transitions. [2022-07-11 23:44:26,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:26,020 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 700 transitions. [2022-07-11 23:44:26,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-11 23:44:26,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:26,021 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] [2022-07-11 23:44:26,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-11 23:44:26,021 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:26,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:26,021 INFO L85 PathProgramCache]: Analyzing trace with hash 188974883, now seen corresponding path program 1 times [2022-07-11 23:44:26,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:26,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256389768] [2022-07-11 23:44:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:26,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:26,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-11 23:44:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:26,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:26,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256389768] [2022-07-11 23:44:26,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256389768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:26,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:26,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-11 23:44:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875908003] [2022-07-11 23:44:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:26,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 23:44:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 23:44:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:44:26,063 INFO L87 Difference]: Start difference. First operand 535 states and 700 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:26,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:26,390 INFO L93 Difference]: Finished difference Result 604 states and 784 transitions. [2022-07-11 23:44:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:26,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-07-11 23:44:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:26,393 INFO L225 Difference]: With dead ends: 604 [2022-07-11 23:44:26,393 INFO L226 Difference]: Without dead ends: 588 [2022-07-11 23:44:26,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-11 23:44:26,393 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 630 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:26,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1112 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:26,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-07-11 23:44:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 521. [2022-07-11 23:44:26,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 457 states have (on average 1.2844638949671772) internal successors, (587), 469 states have internal predecessors, (587), 41 states have call successors, (41), 18 states have call predecessors, (41), 22 states have return successors, (50), 34 states have call predecessors, (50), 33 states have call successors, (50) [2022-07-11 23:44:26,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 678 transitions. [2022-07-11 23:44:26,429 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 678 transitions. Word has length 42 [2022-07-11 23:44:26,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:26,429 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 678 transitions. [2022-07-11 23:44:26,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 678 transitions. [2022-07-11 23:44:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-11 23:44:26,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:26,432 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] [2022-07-11 23:44:26,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-11 23:44:26,433 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:26,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:26,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1315082489, now seen corresponding path program 1 times [2022-07-11 23:44:26,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:26,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621159116] [2022-07-11 23:44:26,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:26,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:26,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-11 23:44:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:26,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:26,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621159116] [2022-07-11 23:44:26,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621159116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:26,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:26,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:26,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877848213] [2022-07-11 23:44:26,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:26,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:26,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:26,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:26,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:26,510 INFO L87 Difference]: Start difference. First operand 521 states and 678 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:26,716 INFO L93 Difference]: Finished difference Result 727 states and 955 transitions. [2022-07-11 23:44:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:44:26,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2022-07-11 23:44:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:26,718 INFO L225 Difference]: With dead ends: 727 [2022-07-11 23:44:26,718 INFO L226 Difference]: Without dead ends: 487 [2022-07-11 23:44:26,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:26,719 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 106 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:26,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1774 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:26,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-07-11 23:44:26,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 475. [2022-07-11 23:44:26,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 417 states have (on average 1.2661870503597121) internal successors, (528), 425 states have internal predecessors, (528), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (45), 33 states have call predecessors, (45), 32 states have call successors, (45) [2022-07-11 23:44:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 612 transitions. [2022-07-11 23:44:26,745 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 612 transitions. Word has length 44 [2022-07-11 23:44:26,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:26,745 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 612 transitions. [2022-07-11 23:44:26,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:26,745 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 612 transitions. [2022-07-11 23:44:26,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-11 23:44:26,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:26,746 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] [2022-07-11 23:44:26,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-11 23:44:26,746 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:26,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:26,747 INFO L85 PathProgramCache]: Analyzing trace with hash 817778302, now seen corresponding path program 1 times [2022-07-11 23:44:26,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:26,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695355641] [2022-07-11 23:44:26,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:26,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-11 23:44:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:26,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:26,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695355641] [2022-07-11 23:44:26,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695355641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:26,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:26,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-11 23:44:26,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002263619] [2022-07-11 23:44:26,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:26,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 23:44:26,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:26,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 23:44:26,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:44:26,797 INFO L87 Difference]: Start difference. First operand 475 states and 612 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:27,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:27,063 INFO L93 Difference]: Finished difference Result 681 states and 884 transitions. [2022-07-11 23:44:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:44:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-07-11 23:44:27,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:27,066 INFO L225 Difference]: With dead ends: 681 [2022-07-11 23:44:27,067 INFO L226 Difference]: Without dead ends: 487 [2022-07-11 23:44:27,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:44:27,068 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 408 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:27,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1038 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-07-11 23:44:27,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 475. [2022-07-11 23:44:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 417 states have (on average 1.2613908872901678) internal successors, (526), 425 states have internal predecessors, (526), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (45), 33 states have call predecessors, (45), 32 states have call successors, (45) [2022-07-11 23:44:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 610 transitions. [2022-07-11 23:44:27,092 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 610 transitions. Word has length 46 [2022-07-11 23:44:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:27,092 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 610 transitions. [2022-07-11 23:44:27,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 610 transitions. [2022-07-11 23:44:27,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-11 23:44:27,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:27,094 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] [2022-07-11 23:44:27,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-11 23:44:27,094 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:27,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:27,094 INFO L85 PathProgramCache]: Analyzing trace with hash 352065004, now seen corresponding path program 1 times [2022-07-11 23:44:27,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:27,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753559645] [2022-07-11 23:44:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:27,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-11 23:44:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:27,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:27,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753559645] [2022-07-11 23:44:27,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753559645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:27,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:27,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-11 23:44:27,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460477981] [2022-07-11 23:44:27,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:27,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:44:27,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:27,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:44:27,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:27,154 INFO L87 Difference]: Start difference. First operand 475 states and 610 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:27,418 INFO L93 Difference]: Finished difference Result 499 states and 635 transitions. [2022-07-11 23:44:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:27,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-07-11 23:44:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:27,421 INFO L225 Difference]: With dead ends: 499 [2022-07-11 23:44:27,421 INFO L226 Difference]: Without dead ends: 483 [2022-07-11 23:44:27,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:44:27,422 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 78 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:27,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1952 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-11 23:44:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 471. [2022-07-11 23:44:27,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 414 states have (on average 1.2608695652173914) internal successors, (522), 422 states have internal predecessors, (522), 38 states have call successors, (38), 17 states have call predecessors, (38), 18 states have return successors, (44), 32 states have call predecessors, (44), 31 states have call successors, (44) [2022-07-11 23:44:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 604 transitions. [2022-07-11 23:44:27,453 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 604 transitions. Word has length 46 [2022-07-11 23:44:27,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:27,454 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 604 transitions. [2022-07-11 23:44:27,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:27,454 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 604 transitions. [2022-07-11 23:44:27,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-11 23:44:27,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:27,455 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] [2022-07-11 23:44:27,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-11 23:44:27,455 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:27,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2034962301, now seen corresponding path program 1 times [2022-07-11 23:44:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:27,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983639640] [2022-07-11 23:44:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:27,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-11 23:44:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:27,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:27,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983639640] [2022-07-11 23:44:27,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983639640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:27,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:27,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:27,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867238779] [2022-07-11 23:44:27,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:27,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:27,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:27,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:27,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:27,499 INFO L87 Difference]: Start difference. First operand 471 states and 604 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-07-11 23:44:27,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:27,808 INFO L93 Difference]: Finished difference Result 513 states and 648 transitions. [2022-07-11 23:44:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:44:27,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 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 48 [2022-07-11 23:44:27,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:27,811 INFO L225 Difference]: With dead ends: 513 [2022-07-11 23:44:27,811 INFO L226 Difference]: Without dead ends: 491 [2022-07-11 23:44:27,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:44:27,811 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 171 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:27,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1440 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:44:27,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-07-11 23:44:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 466. [2022-07-11 23:44:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 411 states have (on average 1.2603406326034063) internal successors, (518), 418 states have internal predecessors, (518), 37 states have call successors, (37), 16 states have call predecessors, (37), 17 states have return successors, (43), 32 states have call predecessors, (43), 30 states have call successors, (43) [2022-07-11 23:44:27,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 598 transitions. [2022-07-11 23:44:27,834 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 598 transitions. Word has length 48 [2022-07-11 23:44:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:27,834 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 598 transitions. [2022-07-11 23:44:27,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 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) [2022-07-11 23:44:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 598 transitions. [2022-07-11 23:44:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-11 23:44:27,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:27,835 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] [2022-07-11 23:44:27,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-11 23:44:27,836 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1900155685, now seen corresponding path program 1 times [2022-07-11 23:44:27,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:27,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504979932] [2022-07-11 23:44:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:27,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:27,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-11 23:44:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:27,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:27,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:27,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504979932] [2022-07-11 23:44:27,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504979932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:27,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:27,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:44:27,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633662371] [2022-07-11 23:44:27,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:27,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:44:27,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:27,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:44:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:44:27,892 INFO L87 Difference]: Start difference. First operand 466 states and 598 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:28,045 INFO L93 Difference]: Finished difference Result 745 states and 956 transitions. [2022-07-11 23:44:28,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:44:28,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2022-07-11 23:44:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:28,047 INFO L225 Difference]: With dead ends: 745 [2022-07-11 23:44:28,047 INFO L226 Difference]: Without dead ends: 557 [2022-07-11 23:44:28,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:28,048 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 192 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:28,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 889 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:44:28,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-07-11 23:44:28,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 519. [2022-07-11 23:44:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 459 states have (on average 1.261437908496732) internal successors, (579), 465 states have internal predecessors, (579), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (49), 36 states have call predecessors, (49), 33 states have call successors, (49) [2022-07-11 23:44:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 667 transitions. [2022-07-11 23:44:28,073 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 667 transitions. Word has length 49 [2022-07-11 23:44:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:28,073 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 667 transitions. [2022-07-11 23:44:28,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:28,073 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 667 transitions. [2022-07-11 23:44:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-11 23:44:28,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:28,074 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] [2022-07-11 23:44:28,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-11 23:44:28,075 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:28,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:28,075 INFO L85 PathProgramCache]: Analyzing trace with hash 785908469, now seen corresponding path program 1 times [2022-07-11 23:44:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:28,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841948741] [2022-07-11 23:44:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:28,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:28,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:28,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:28,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841948741] [2022-07-11 23:44:28,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841948741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:28,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:28,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:44:28,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847921323] [2022-07-11 23:44:28,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:28,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:44:28,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:28,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:44:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:44:28,106 INFO L87 Difference]: Start difference. First operand 519 states and 667 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:28,288 INFO L93 Difference]: Finished difference Result 609 states and 774 transitions. [2022-07-11 23:44:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:44:28,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-07-11 23:44:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:28,290 INFO L225 Difference]: With dead ends: 609 [2022-07-11 23:44:28,290 INFO L226 Difference]: Without dead ends: 537 [2022-07-11 23:44:28,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-11 23:44:28,291 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 74 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:28,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1111 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:44:28,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-07-11 23:44:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 521. [2022-07-11 23:44:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 461 states have (on average 1.2603036876355749) internal successors, (581), 467 states have internal predecessors, (581), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (49), 36 states have call predecessors, (49), 33 states have call successors, (49) [2022-07-11 23:44:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 669 transitions. [2022-07-11 23:44:28,316 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 669 transitions. Word has length 48 [2022-07-11 23:44:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:28,316 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 669 transitions. [2022-07-11 23:44:28,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 669 transitions. [2022-07-11 23:44:28,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-11 23:44:28,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:28,317 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] [2022-07-11 23:44:28,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-11 23:44:28,318 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:28,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:28,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1427465013, now seen corresponding path program 1 times [2022-07-11 23:44:28,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:28,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152208657] [2022-07-11 23:44:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:28,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:28,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:28,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:28,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152208657] [2022-07-11 23:44:28,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152208657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:28,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:28,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-11 23:44:28,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112074290] [2022-07-11 23:44:28,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:28,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:44:28,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:28,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:44:28,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:28,362 INFO L87 Difference]: Start difference. First operand 521 states and 669 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:28,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:28,604 INFO L93 Difference]: Finished difference Result 532 states and 679 transitions. [2022-07-11 23:44:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:28,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2022-07-11 23:44:28,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:28,606 INFO L225 Difference]: With dead ends: 532 [2022-07-11 23:44:28,606 INFO L226 Difference]: Without dead ends: 507 [2022-07-11 23:44:28,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:44:28,607 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 56 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:28,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1897 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:28,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-07-11 23:44:28,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 504. [2022-07-11 23:44:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 446 states have (on average 1.2600896860986548) internal successors, (562), 451 states have internal predecessors, (562), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (47), 35 states have call predecessors, (47), 33 states have call successors, (47) [2022-07-11 23:44:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 647 transitions. [2022-07-11 23:44:28,646 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 647 transitions. Word has length 48 [2022-07-11 23:44:28,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:28,646 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 647 transitions. [2022-07-11 23:44:28,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:28,646 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 647 transitions. [2022-07-11 23:44:28,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-11 23:44:28,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:28,647 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, 1] [2022-07-11 23:44:28,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-11 23:44:28,648 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:28,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash 827652383, now seen corresponding path program 1 times [2022-07-11 23:44:28,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:28,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998733901] [2022-07-11 23:44:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:28,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:28,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-11 23:44:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:28,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:28,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:28,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998733901] [2022-07-11 23:44:28,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998733901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:28,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:28,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:28,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360033196] [2022-07-11 23:44:28,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:28,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:28,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:28,699 INFO L87 Difference]: Start difference. First operand 504 states and 647 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:28,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:28,937 INFO L93 Difference]: Finished difference Result 766 states and 986 transitions. [2022-07-11 23:44:28,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:44:28,937 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-07-11 23:44:28,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:28,939 INFO L225 Difference]: With dead ends: 766 [2022-07-11 23:44:28,940 INFO L226 Difference]: Without dead ends: 545 [2022-07-11 23:44:28,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:44:28,941 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 85 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1835 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:28,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 1835 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:28,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-07-11 23:44:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 504. [2022-07-11 23:44:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 446 states have (on average 1.2556053811659194) internal successors, (560), 451 states have internal predecessors, (560), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (47), 35 states have call predecessors, (47), 33 states have call successors, (47) [2022-07-11 23:44:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 645 transitions. [2022-07-11 23:44:28,966 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 645 transitions. Word has length 51 [2022-07-11 23:44:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:28,966 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 645 transitions. [2022-07-11 23:44:28,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 645 transitions. [2022-07-11 23:44:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-11 23:44:28,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:28,967 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, 1] [2022-07-11 23:44:28,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-11 23:44:28,968 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:28,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1569541776, now seen corresponding path program 1 times [2022-07-11 23:44:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:28,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435036069] [2022-07-11 23:44:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:28,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:29,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-11 23:44:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:29,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:29,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435036069] [2022-07-11 23:44:29,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435036069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:29,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:29,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-11 23:44:29,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41499017] [2022-07-11 23:44:29,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:29,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:44:29,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:29,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:44:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:29,026 INFO L87 Difference]: Start difference. First operand 504 states and 645 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:29,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:29,369 INFO L93 Difference]: Finished difference Result 535 states and 676 transitions. [2022-07-11 23:44:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:29,369 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2022-07-11 23:44:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:29,371 INFO L225 Difference]: With dead ends: 535 [2022-07-11 23:44:29,371 INFO L226 Difference]: Without dead ends: 500 [2022-07-11 23:44:29,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-11 23:44:29,372 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 128 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:29,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1643 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:44:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-07-11 23:44:29,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 487. [2022-07-11 23:44:29,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 431 states have (on average 1.2436194895591648) internal successors, (536), 436 states have internal predecessors, (536), 36 states have call successors, (36), 18 states have call predecessors, (36), 19 states have return successors, (45), 33 states have call predecessors, (45), 31 states have call successors, (45) [2022-07-11 23:44:29,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 617 transitions. [2022-07-11 23:44:29,395 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 617 transitions. Word has length 51 [2022-07-11 23:44:29,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:29,395 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 617 transitions. [2022-07-11 23:44:29,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:29,396 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 617 transitions. [2022-07-11 23:44:29,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-11 23:44:29,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:29,397 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, 1, 1] [2022-07-11 23:44:29,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-11 23:44:29,397 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash -838228602, now seen corresponding path program 1 times [2022-07-11 23:44:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:29,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835574796] [2022-07-11 23:44:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:29,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:29,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:29,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-11 23:44:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:29,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835574796] [2022-07-11 23:44:29,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835574796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:29,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:29,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:29,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108928506] [2022-07-11 23:44:29,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:29,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:29,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:29,448 INFO L87 Difference]: Start difference. First operand 487 states and 617 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:29,733 INFO L93 Difference]: Finished difference Result 518 states and 650 transitions. [2022-07-11 23:44:29,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:44:29,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2022-07-11 23:44:29,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:29,735 INFO L225 Difference]: With dead ends: 518 [2022-07-11 23:44:29,735 INFO L226 Difference]: Without dead ends: 495 [2022-07-11 23:44:29,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:44:29,736 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 153 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:29,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1326 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:29,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-11 23:44:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 469. [2022-07-11 23:44:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 415 states have (on average 1.2481927710843375) internal successors, (518), 420 states have internal predecessors, (518), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (44), 32 states have call predecessors, (44), 30 states have call successors, (44) [2022-07-11 23:44:29,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 597 transitions. [2022-07-11 23:44:29,759 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 597 transitions. Word has length 52 [2022-07-11 23:44:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:29,760 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 597 transitions. [2022-07-11 23:44:29,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:29,760 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 597 transitions. [2022-07-11 23:44:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-11 23:44:29,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:29,761 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, 1] [2022-07-11 23:44:29,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-11 23:44:29,761 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:29,761 INFO L85 PathProgramCache]: Analyzing trace with hash 142934411, now seen corresponding path program 1 times [2022-07-11 23:44:29,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:29,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732309226] [2022-07-11 23:44:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:29,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-11 23:44:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:29,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:29,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:29,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732309226] [2022-07-11 23:44:29,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732309226] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:29,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:29,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-11 23:44:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635761978] [2022-07-11 23:44:29,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:29,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 23:44:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 23:44:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:44:29,804 INFO L87 Difference]: Start difference. First operand 469 states and 597 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:30,103 INFO L93 Difference]: Finished difference Result 496 states and 626 transitions. [2022-07-11 23:44:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-11 23:44:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2022-07-11 23:44:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:30,106 INFO L225 Difference]: With dead ends: 496 [2022-07-11 23:44:30,106 INFO L226 Difference]: Without dead ends: 477 [2022-07-11 23:44:30,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:44:30,106 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 86 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:30,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1889 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:44:30,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-07-11 23:44:30,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 465. [2022-07-11 23:44:30,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 412 states have (on average 1.2475728155339805) internal successors, (514), 417 states have internal predecessors, (514), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (43), 31 states have call predecessors, (43), 29 states have call successors, (43) [2022-07-11 23:44:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 591 transitions. [2022-07-11 23:44:30,128 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 591 transitions. Word has length 51 [2022-07-11 23:44:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:30,128 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 591 transitions. [2022-07-11 23:44:30,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:30,129 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 591 transitions. [2022-07-11 23:44:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-11 23:44:30,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:30,130 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, 1, 1] [2022-07-11 23:44:30,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-11 23:44:30,130 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:30,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:30,130 INFO L85 PathProgramCache]: Analyzing trace with hash -645897843, now seen corresponding path program 1 times [2022-07-11 23:44:30,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:30,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472347515] [2022-07-11 23:44:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:30,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-11 23:44:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:30,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:30,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:30,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472347515] [2022-07-11 23:44:30,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472347515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:30,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:30,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-11 23:44:30,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11167291] [2022-07-11 23:44:30,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:30,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 23:44:30,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 23:44:30,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:44:30,172 INFO L87 Difference]: Start difference. First operand 465 states and 591 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:30,456 INFO L93 Difference]: Finished difference Result 492 states and 620 transitions. [2022-07-11 23:44:30,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-11 23:44:30,456 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-07-11 23:44:30,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:30,458 INFO L225 Difference]: With dead ends: 492 [2022-07-11 23:44:30,458 INFO L226 Difference]: Without dead ends: 472 [2022-07-11 23:44:30,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:44:30,458 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 86 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:30,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1915 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:30,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-07-11 23:44:30,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 460. [2022-07-11 23:44:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 408 states have (on average 1.2475490196078431) internal successors, (509), 413 states have internal predecessors, (509), 33 states have call successors, (33), 17 states have call predecessors, (33), 18 states have return successors, (42), 30 states have call predecessors, (42), 28 states have call successors, (42) [2022-07-11 23:44:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 584 transitions. [2022-07-11 23:44:30,480 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 584 transitions. Word has length 52 [2022-07-11 23:44:30,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:30,480 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 584 transitions. [2022-07-11 23:44:30,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:30,481 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 584 transitions. [2022-07-11 23:44:30,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-11 23:44:30,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:30,482 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, 1, 1] [2022-07-11 23:44:30,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-11 23:44:30,482 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:30,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash -403019245, now seen corresponding path program 1 times [2022-07-11 23:44:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:30,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987788105] [2022-07-11 23:44:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:30,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:30,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-11 23:44:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:30,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:30,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987788105] [2022-07-11 23:44:30,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987788105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:30,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:30,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-11 23:44:30,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812334172] [2022-07-11 23:44:30,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:30,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 23:44:30,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:30,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 23:44:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:44:30,530 INFO L87 Difference]: Start difference. First operand 460 states and 584 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:30,793 INFO L93 Difference]: Finished difference Result 487 states and 613 transitions. [2022-07-11 23:44:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-11 23:44:30,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-07-11 23:44:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:30,795 INFO L225 Difference]: With dead ends: 487 [2022-07-11 23:44:30,795 INFO L226 Difference]: Without dead ends: 468 [2022-07-11 23:44:30,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:44:30,796 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 86 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:30,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1805 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:30,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2022-07-11 23:44:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 456. [2022-07-11 23:44:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 405 states have (on average 1.2469135802469136) internal successors, (505), 410 states have internal predecessors, (505), 32 states have call successors, (32), 17 states have call predecessors, (32), 18 states have return successors, (41), 29 states have call predecessors, (41), 27 states have call successors, (41) [2022-07-11 23:44:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 578 transitions. [2022-07-11 23:44:30,818 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 578 transitions. Word has length 52 [2022-07-11 23:44:30,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:30,818 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 578 transitions. [2022-07-11 23:44:30,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:30,818 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 578 transitions. [2022-07-11 23:44:30,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-11 23:44:30,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:30,820 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, 1, 1] [2022-07-11 23:44:30,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-11 23:44:30,820 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:30,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:30,821 INFO L85 PathProgramCache]: Analyzing trace with hash 516067612, now seen corresponding path program 1 times [2022-07-11 23:44:30,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:30,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228935354] [2022-07-11 23:44:30,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:30,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:30,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-11 23:44:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:30,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:30,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:30,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228935354] [2022-07-11 23:44:30,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228935354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:30,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:30,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-11 23:44:30,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148729285] [2022-07-11 23:44:30,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:30,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:44:30,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:44:30,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:30,865 INFO L87 Difference]: Start difference. First operand 456 states and 578 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:31,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:31,094 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2022-07-11 23:44:31,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:31,095 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2022-07-11 23:44:31,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:31,096 INFO L225 Difference]: With dead ends: 479 [2022-07-11 23:44:31,096 INFO L226 Difference]: Without dead ends: 446 [2022-07-11 23:44:31,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:44:31,097 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 76 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:31,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1642 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:31,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-07-11 23:44:31,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 434. [2022-07-11 23:44:31,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 384 states have (on average 1.25) internal successors, (480), 389 states have internal predecessors, (480), 31 states have call successors, (31), 17 states have call predecessors, (31), 18 states have return successors, (40), 28 states have call predecessors, (40), 26 states have call successors, (40) [2022-07-11 23:44:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 551 transitions. [2022-07-11 23:44:31,118 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 551 transitions. Word has length 52 [2022-07-11 23:44:31,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:31,118 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 551 transitions. [2022-07-11 23:44:31,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:31,118 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 551 transitions. [2022-07-11 23:44:31,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-11 23:44:31,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:31,119 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, 1, 1, 1, 1] [2022-07-11 23:44:31,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-11 23:44:31,119 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:31,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1195477270, now seen corresponding path program 1 times [2022-07-11 23:44:31,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:31,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423574906] [2022-07-11 23:44:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:31,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-11 23:44:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:31,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:31,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:31,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423574906] [2022-07-11 23:44:31,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423574906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:31,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:31,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:31,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164616746] [2022-07-11 23:44:31,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:31,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:31,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:31,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:31,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:31,176 INFO L87 Difference]: Start difference. First operand 434 states and 551 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:31,401 INFO L93 Difference]: Finished difference Result 788 states and 1018 transitions. [2022-07-11 23:44:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:44:31,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2022-07-11 23:44:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:31,403 INFO L225 Difference]: With dead ends: 788 [2022-07-11 23:44:31,403 INFO L226 Difference]: Without dead ends: 578 [2022-07-11 23:44:31,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:44:31,404 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 137 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:31,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1682 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-07-11 23:44:31,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 434. [2022-07-11 23:44:31,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 384 states have (on average 1.2473958333333333) internal successors, (479), 389 states have internal predecessors, (479), 31 states have call successors, (31), 17 states have call predecessors, (31), 18 states have return successors, (40), 28 states have call predecessors, (40), 26 states have call successors, (40) [2022-07-11 23:44:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 550 transitions. [2022-07-11 23:44:31,445 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 550 transitions. Word has length 54 [2022-07-11 23:44:31,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:31,445 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 550 transitions. [2022-07-11 23:44:31,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 550 transitions. [2022-07-11 23:44:31,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-11 23:44:31,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:31,446 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, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:31,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-11 23:44:31,447 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:31,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1692249118, now seen corresponding path program 1 times [2022-07-11 23:44:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:31,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898745902] [2022-07-11 23:44:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:31,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-11 23:44:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:31,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:31,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:31,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898745902] [2022-07-11 23:44:31,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898745902] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:31,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:31,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-11 23:44:31,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594856854] [2022-07-11 23:44:31,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:31,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 23:44:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 23:44:31,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:44:31,514 INFO L87 Difference]: Start difference. First operand 434 states and 550 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:31,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:31,775 INFO L93 Difference]: Finished difference Result 461 states and 579 transitions. [2022-07-11 23:44:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-11 23:44:31,775 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-07-11 23:44:31,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:31,777 INFO L225 Difference]: With dead ends: 461 [2022-07-11 23:44:31,777 INFO L226 Difference]: Without dead ends: 424 [2022-07-11 23:44:31,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:44:31,777 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 94 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:31,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 1603 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:31,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-11 23:44:31,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 412. [2022-07-11 23:44:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 365 states have (on average 1.2465753424657535) internal successors, (455), 370 states have internal predecessors, (455), 29 states have call successors, (29), 16 states have call predecessors, (29), 17 states have return successors, (38), 26 states have call predecessors, (38), 24 states have call successors, (38) [2022-07-11 23:44:31,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 522 transitions. [2022-07-11 23:44:31,798 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 522 transitions. Word has length 56 [2022-07-11 23:44:31,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:31,798 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 522 transitions. [2022-07-11 23:44:31,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:44:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 522 transitions. [2022-07-11 23:44:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-11 23:44:31,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:31,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:31,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-11 23:44:31,800 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash 835021725, now seen corresponding path program 1 times [2022-07-11 23:44:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186169826] [2022-07-11 23:44:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:31,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-11 23:44:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-11 23:44:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:31,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:31,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:31,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186169826] [2022-07-11 23:44:31,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186169826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:31,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:31,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-11 23:44:31,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378811576] [2022-07-11 23:44:31,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:31,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-11 23:44:31,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:31,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-11 23:44:31,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:44:31,844 INFO L87 Difference]: Start difference. First operand 412 states and 522 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:32,044 INFO L93 Difference]: Finished difference Result 630 states and 796 transitions. [2022-07-11 23:44:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 23:44:32,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-07-11 23:44:32,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:32,046 INFO L225 Difference]: With dead ends: 630 [2022-07-11 23:44:32,046 INFO L226 Difference]: Without dead ends: 399 [2022-07-11 23:44:32,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:44:32,047 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 262 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:32,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 893 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-07-11 23:44:32,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 379. [2022-07-11 23:44:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 337 states have (on average 1.2462908011869436) internal successors, (420), 341 states have internal predecessors, (420), 26 states have call successors, (26), 15 states have call predecessors, (26), 15 states have return successors, (26), 23 states have call predecessors, (26), 22 states have call successors, (26) [2022-07-11 23:44:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 472 transitions. [2022-07-11 23:44:32,067 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 472 transitions. Word has length 62 [2022-07-11 23:44:32,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:32,067 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 472 transitions. [2022-07-11 23:44:32,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 472 transitions. [2022-07-11 23:44:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-11 23:44:32,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:32,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:32,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-11 23:44:32,068 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:32,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:32,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1658087328, now seen corresponding path program 1 times [2022-07-11 23:44:32,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:32,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450870305] [2022-07-11 23:44:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:32,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-11 23:44:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-11 23:44:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:32,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:32,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450870305] [2022-07-11 23:44:32,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450870305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:32,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:32,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-11 23:44:32,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134653307] [2022-07-11 23:44:32,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:32,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-11 23:44:32,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:32,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-11 23:44:32,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:44:32,131 INFO L87 Difference]: Start difference. First operand 379 states and 472 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:32,445 INFO L93 Difference]: Finished difference Result 438 states and 542 transitions. [2022-07-11 23:44:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-11 23:44:32,446 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 66 [2022-07-11 23:44:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:32,447 INFO L225 Difference]: With dead ends: 438 [2022-07-11 23:44:32,447 INFO L226 Difference]: Without dead ends: 419 [2022-07-11 23:44:32,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-11 23:44:32,448 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 294 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:32,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1507 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-07-11 23:44:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 387. [2022-07-11 23:44:32,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 344 states have (on average 1.2412790697674418) internal successors, (427), 348 states have internal predecessors, (427), 26 states have call successors, (26), 15 states have call predecessors, (26), 16 states have return successors, (29), 24 states have call predecessors, (29), 22 states have call successors, (29) [2022-07-11 23:44:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 482 transitions. [2022-07-11 23:44:32,467 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 482 transitions. Word has length 66 [2022-07-11 23:44:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:32,467 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 482 transitions. [2022-07-11 23:44:32,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 7 states have internal predecessors, (61), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 482 transitions. [2022-07-11 23:44:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-11 23:44:32,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:32,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:32,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-11 23:44:32,468 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1960160443, now seen corresponding path program 1 times [2022-07-11 23:44:32,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:32,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410180059] [2022-07-11 23:44:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:32,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-11 23:44:32,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-11 23:44:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:32,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:32,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410180059] [2022-07-11 23:44:32,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410180059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:32,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:32,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-11 23:44:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713800492] [2022-07-11 23:44:32,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:32,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-11 23:44:32,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:32,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-11 23:44:32,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-11 23:44:32,515 INFO L87 Difference]: Start difference. First operand 387 states and 482 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:44:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:32,859 INFO L93 Difference]: Finished difference Result 792 states and 963 transitions. [2022-07-11 23:44:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:32,860 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2022-07-11 23:44:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:32,861 INFO L225 Difference]: With dead ends: 792 [2022-07-11 23:44:32,861 INFO L226 Difference]: Without dead ends: 507 [2022-07-11 23:44:32,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-07-11 23:44:32,862 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 505 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:32,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1249 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 23:44:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-07-11 23:44:32,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 481. [2022-07-11 23:44:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 428 states have (on average 1.2313084112149533) internal successors, (527), 434 states have internal predecessors, (527), 28 states have call successors, (28), 21 states have call predecessors, (28), 24 states have return successors, (31), 26 states have call predecessors, (31), 24 states have call successors, (31) [2022-07-11 23:44:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 586 transitions. [2022-07-11 23:44:32,887 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 586 transitions. Word has length 68 [2022-07-11 23:44:32,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:32,887 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 586 transitions. [2022-07-11 23:44:32,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-11 23:44:32,888 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 586 transitions. [2022-07-11 23:44:32,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-11 23:44:32,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:32,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:32,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-11 23:44:32,889 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:32,889 INFO L85 PathProgramCache]: Analyzing trace with hash 378634288, now seen corresponding path program 1 times [2022-07-11 23:44:32,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:32,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230022606] [2022-07-11 23:44:32,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:32,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-11 23:44:32,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-11 23:44:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:32,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:32,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230022606] [2022-07-11 23:44:32,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230022606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:32,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:32,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-11 23:44:32,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045688705] [2022-07-11 23:44:32,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:32,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-11 23:44:32,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:32,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-11 23:44:32,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-11 23:44:32,947 INFO L87 Difference]: Start difference. First operand 481 states and 586 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:33,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:33,212 INFO L93 Difference]: Finished difference Result 520 states and 627 transitions. [2022-07-11 23:44:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-11 23:44:33,213 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 67 [2022-07-11 23:44:33,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:33,214 INFO L225 Difference]: With dead ends: 520 [2022-07-11 23:44:33,215 INFO L226 Difference]: Without dead ends: 501 [2022-07-11 23:44:33,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-11 23:44:33,215 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 160 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:33,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1619 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:33,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-07-11 23:44:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 473. [2022-07-11 23:44:33,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 421 states have (on average 1.2327790973871735) internal successors, (519), 427 states have internal predecessors, (519), 28 states have call successors, (28), 21 states have call predecessors, (28), 23 states have return successors, (29), 25 states have call predecessors, (29), 24 states have call successors, (29) [2022-07-11 23:44:33,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 576 transitions. [2022-07-11 23:44:33,245 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 576 transitions. Word has length 67 [2022-07-11 23:44:33,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:33,246 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 576 transitions. [2022-07-11 23:44:33,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 7 states have internal predecessors, (62), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:44:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 576 transitions. [2022-07-11 23:44:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-11 23:44:33,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:33,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:33,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-11 23:44:33,249 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:33,249 INFO L85 PathProgramCache]: Analyzing trace with hash -2018739242, now seen corresponding path program 1 times [2022-07-11 23:44:33,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:33,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63286995] [2022-07-11 23:44:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:33,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:33,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-11 23:44:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:33,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-11 23:44:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:33,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-11 23:44:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:33,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:33,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:33,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63286995] [2022-07-11 23:44:33,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63286995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:33,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:33,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-11 23:44:33,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676535780] [2022-07-11 23:44:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:33,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-11 23:44:33,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:33,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-11 23:44:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-11 23:44:33,321 INFO L87 Difference]: Start difference. First operand 473 states and 576 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-11 23:44:33,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:33,762 INFO L93 Difference]: Finished difference Result 476 states and 578 transitions. [2022-07-11 23:44:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-11 23:44:33,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 69 [2022-07-11 23:44:33,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:33,763 INFO L225 Difference]: With dead ends: 476 [2022-07-11 23:44:33,763 INFO L226 Difference]: Without dead ends: 423 [2022-07-11 23:44:33,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-07-11 23:44:33,764 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 220 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:33,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1416 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:44:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-07-11 23:44:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 420. [2022-07-11 23:44:33,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 374 states have (on average 1.2379679144385027) internal successors, (463), 379 states have internal predecessors, (463), 25 states have call successors, (25), 19 states have call predecessors, (25), 20 states have return successors, (26), 22 states have call predecessors, (26), 22 states have call successors, (26) [2022-07-11 23:44:33,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 514 transitions. [2022-07-11 23:44:33,785 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 514 transitions. Word has length 69 [2022-07-11 23:44:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:33,785 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 514 transitions. [2022-07-11 23:44:33,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 7 states have internal predecessors, (62), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-11 23:44:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 514 transitions. [2022-07-11 23:44:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-11 23:44:33,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:33,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:33,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-11 23:44:33,786 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:33,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2014497479, now seen corresponding path program 1 times [2022-07-11 23:44:33,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:33,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672523366] [2022-07-11 23:44:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:33,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:33,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-11 23:44:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:33,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-11 23:44:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:44:33,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:44:33,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:44:33,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672523366] [2022-07-11 23:44:33,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672523366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:44:33,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:44:33,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-11 23:44:33,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96405592] [2022-07-11 23:44:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:44:33,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-11 23:44:33,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:44:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-11 23:44:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-11 23:44:33,838 INFO L87 Difference]: Start difference. First operand 420 states and 514 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-07-11 23:44:34,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:44:34,064 INFO L93 Difference]: Finished difference Result 578 states and 707 transitions. [2022-07-11 23:44:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-11 23:44:34,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 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 71 [2022-07-11 23:44:34,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:44:34,086 INFO L225 Difference]: With dead ends: 578 [2022-07-11 23:44:34,086 INFO L226 Difference]: Without dead ends: 447 [2022-07-11 23:44:34,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-07-11 23:44:34,087 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 123 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:44:34,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1445 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 23:44:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-07-11 23:44:34,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 431. [2022-07-11 23:44:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 384 states have (on average 1.21875) internal successors, (468), 390 states have internal predecessors, (468), 26 states have call successors, (26), 19 states have call predecessors, (26), 20 states have return successors, (26), 22 states have call predecessors, (26), 22 states have call successors, (26) [2022-07-11 23:44:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 520 transitions. [2022-07-11 23:44:34,111 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 520 transitions. Word has length 71 [2022-07-11 23:44:34,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:44:34,111 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 520 transitions. [2022-07-11 23:44:34,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 7 states have internal predecessors, (66), 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) [2022-07-11 23:44:34,112 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 520 transitions. [2022-07-11 23:44:34,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-11 23:44:34,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:44:34,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:34,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-11 23:44:34,113 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:44:34,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:44:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1484321657, now seen corresponding path program 1 times [2022-07-11 23:44:34,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:44:34,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708727443] [2022-07-11 23:44:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:44:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:44:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-11 23:44:34,128 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-11 23:44:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-11 23:44:34,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-11 23:44:34,175 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-11 23:44:34,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-11 23:44:34,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-11 23:44:34,179 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:44:34,182 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-11 23:44:34,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.07 11:44:34 BoogieIcfgContainer [2022-07-11 23:44:34,270 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-11 23:44:34,271 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-11 23:44:34,271 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-11 23:44:34,271 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-11 23:44:34,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:44:18" (3/4) ... [2022-07-11 23:44:34,273 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-11 23:44:34,347 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-11 23:44:34,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-11 23:44:34,348 INFO L158 Benchmark]: Toolchain (without parser) took 17368.63ms. Allocated memory was 92.3MB in the beginning and 346.0MB in the end (delta: 253.8MB). Free memory was 58.5MB in the beginning and 290.0MB in the end (delta: -231.5MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2022-07-11 23:44:34,348 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 92.3MB. Free memory is still 46.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-11 23:44:34,348 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.69ms. Allocated memory is still 92.3MB. Free memory was 58.3MB in the beginning and 54.1MB in the end (delta: 4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-11 23:44:34,349 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.92ms. Allocated memory is still 92.3MB. Free memory was 54.1MB in the beginning and 47.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-11 23:44:34,349 INFO L158 Benchmark]: Boogie Preprocessor took 57.42ms. Allocated memory is still 92.3MB. Free memory was 47.8MB in the beginning and 43.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-11 23:44:34,349 INFO L158 Benchmark]: RCFGBuilder took 827.89ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 43.9MB in the beginning and 80.7MB in the end (delta: -36.7MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2022-07-11 23:44:34,349 INFO L158 Benchmark]: TraceAbstraction took 15906.21ms. Allocated memory was 117.4MB in the beginning and 346.0MB in the end (delta: 228.6MB). Free memory was 80.2MB in the beginning and 302.5MB in the end (delta: -222.3MB). Peak memory consumption was 202.8MB. Max. memory is 16.1GB. [2022-07-11 23:44:34,353 INFO L158 Benchmark]: Witness Printer took 76.76ms. Allocated memory is still 346.0MB. Free memory was 302.5MB in the beginning and 290.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-11 23:44:34,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 92.3MB. Free memory is still 46.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.69ms. Allocated memory is still 92.3MB. Free memory was 58.3MB in the beginning and 54.1MB in the end (delta: 4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.92ms. Allocated memory is still 92.3MB. Free memory was 54.1MB in the beginning and 47.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.42ms. Allocated memory is still 92.3MB. Free memory was 47.8MB in the beginning and 43.9MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 827.89ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 43.9MB in the beginning and 80.7MB in the end (delta: -36.7MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * TraceAbstraction took 15906.21ms. Allocated memory was 117.4MB in the beginning and 346.0MB in the end (delta: 228.6MB). Free memory was 80.2MB in the beginning and 302.5MB in the end (delta: -222.3MB). Peak memory consumption was 202.8MB. Max. memory is 16.1GB. * Witness Printer took 76.76ms. Allocated memory is still 346.0MB. Free memory was 302.5MB in the beginning and 290.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1627]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int FloppyThread ; [L43] int KernelMode ; [L44] int Suspended ; [L45] int Executive ; [L46] int DiskController ; [L47] int FloppyDiskPeripheral ; [L48] int FlConfigCallBack ; [L49] int MaximumInterfaceType ; [L50] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L51] int myStatus ; [L52] int s ; [L53] int UNLOADED ; [L54] int NP ; [L55] int DC ; [L56] int SKIP1 ; [L57] int SKIP2 ; [L58] int MPR1 ; [L59] int MPR3 ; [L60] int IPC ; [L61] int pended ; [L62] int compRegistered ; [L63] int lowerDriverReturn ; [L64] int setEventCalled ; [L65] int customIrp ; [L88] int PagingReferenceCount = 0; [L89] int PagingMutex = 0; VAL [compRegistered=0, customIrp=0, DC=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=0, MPR3=0, myStatus=0, NP=0, PagingMutex=0, PagingReferenceCount=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L668] int status ; [L669] int irp = __VERIFIER_nondet_int() ; [L670] int pirp ; [L671] int pirp__IoStatus__Status ; [L672] int irp_choice = __VERIFIER_nondet_int() ; [L673] int devobj = __VERIFIER_nondet_int() ; [L674] int __cil_tmp8 ; [L676] FloppyThread = 0 [L677] KernelMode = 0 [L678] Suspended = 0 [L679] Executive = 0 [L680] DiskController = 0 [L681] FloppyDiskPeripheral = 0 [L682] FlConfigCallBack = 0 [L683] MaximumInterfaceType = 0 [L684] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L685] myStatus = 0 [L686] s = 0 [L687] UNLOADED = 0 [L688] NP = 0 [L689] DC = 0 [L690] SKIP1 = 0 [L691] SKIP2 = 0 [L692] MPR1 = 0 [L693] MPR3 = 0 [L694] IPC = 0 [L695] pended = 0 [L696] compRegistered = 0 [L697] lowerDriverReturn = 0 [L698] setEventCalled = 0 [L699] customIrp = 0 [L703] status = 0 [L704] pirp = irp [L705] CALL _BLAST_init() [L71] UNLOADED = 0 [L72] NP = 1 [L73] DC = 2 [L74] SKIP1 = 3 [L75] SKIP2 = 4 [L76] MPR1 = 5 [L77] MPR3 = 6 [L78] IPC = 7 [L79] s = UNLOADED [L80] pended = 0 [L81] compRegistered = 0 [L82] lowerDriverReturn = 0 [L83] setEventCalled = 0 [L84] customIrp = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L705] RET _BLAST_init() [L707] COND TRUE status >= 0 [L708] s = NP [L709] customIrp = 0 [L710] setEventCalled = customIrp [L711] lowerDriverReturn = setEventCalled [L712] compRegistered = lowerDriverReturn [L713] pended = compRegistered [L714] pirp__IoStatus__Status = 0 [L715] myStatus = 0 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, pirp=0, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, UNLOADED=0] [L716] COND TRUE irp_choice == 0 [L717] pirp__IoStatus__Status = -1073741637 [L718] myStatus = -1073741637 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, pirp=0, pirp__IoStatus__Status=-1073741637, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, UNLOADED=0] [L721] CALL stub_driver_init() [L658] s = NP [L659] pended = 0 [L660] compRegistered = 0 [L661] lowerDriverReturn = 0 [L662] setEventCalled = 0 [L663] customIrp = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L721] RET stub_driver_init() [L724] COND FALSE !(status < 0) [L728] int tmp_ndt_1; [L729] tmp_ndt_1 = __VERIFIER_nondet_int() [L730] COND FALSE !(tmp_ndt_1 == 0) [L733] int tmp_ndt_2; [L734] tmp_ndt_2 = __VERIFIER_nondet_int() [L735] COND FALSE !(tmp_ndt_2 == 1) [L738] int tmp_ndt_3; [L739] tmp_ndt_3 = __VERIFIER_nondet_int() [L740] COND FALSE !(tmp_ndt_3 == 2) [L743] int tmp_ndt_4; [L744] tmp_ndt_4 = __VERIFIER_nondet_int() [L745] COND TRUE tmp_ndt_4 == 3 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, pirp=0, pirp__IoStatus__Status=-1073741637, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L767] CALL, EXPR FloppyPnp(devobj, pirp) [L161] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L162] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L163] int Irp__IoStatus__Information ; [L164] int Irp__IoStatus__Status ; [L165] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L166] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L167] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L168] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L169] int disketteExtension__HoldNewRequests ; [L170] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L171] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L172] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L173] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L174] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L175] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L176] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L177] int irpSp ; [L178] int disketteExtension ; [L179] int ntStatus ; [L180] int doneEvent = __VERIFIER_nondet_int() ; [L181] int irpSp___0 ; [L182] int nextIrpSp ; [L183] int nextIrpSp__Control ; [L184] int irpSp___1 ; [L185] int irpSp__Context ; [L186] int irpSp__Control ; [L187] long __cil_tmp29 ; [L188] long __cil_tmp30 ; [L191] ntStatus = 0 [L192] PagingReferenceCount ++ VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L193] COND TRUE PagingReferenceCount == 1 VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L196] disketteExtension = DeviceObject__DeviceExtension [L197] irpSp = Irp__Tail__Overlay__CurrentStackLocation VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L198] COND FALSE !(\read(disketteExtension__IsRemoved)) VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L207] COND FALSE !(irpSp__MinorFunction == 0) VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L210] COND TRUE irpSp__MinorFunction == 5 VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L236] COND TRUE irpSp__MinorFunction == 5 VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L239] COND FALSE !(! disketteExtension__IsStarted) [L255] disketteExtension__HoldNewRequests = 1 VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L256] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) VAL [\old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L98] int status ; [L99] int threadHandle = __VERIFIER_nondet_int() ; [L100] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L101] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L102] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L103] int Irp__IoStatus__Status ; [L104] int Irp__IoStatus__Information ; [L105] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L106] int ObjAttributes = __VERIFIER_nondet_int() ; [L107] int __cil_tmp12 ; [L108] int __cil_tmp13 ; VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=-4, UNLOADED=0] [L111] COND FALSE !(DisketteExtension__PoweringDown == 1) [L117] DisketteExtension__ThreadReferenceCount ++ VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=-4, UNLOADED=0] [L118] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=-4, UNLOADED=0] [L150] COND TRUE pended == 0 [L151] pended = 1 VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=-4, UNLOADED=0] [L157] return (259); VAL [\old(DisketteExtension)=0, \old(Irp)=0, \old(myStatus)=-1073741637, \old(PagingReferenceCount)=1, \old(pended)=0, \result=259, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=-6, DisketteExtension__PoweringDown=-5, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=-4, UNLOADED=0] [L256] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) VAL [\old(DeviceObject)=0, \old(Irp)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, FlQueueIrpToThread(Irp, disketteExtension)=259, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L256] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L259] __cil_tmp29 = (long )ntStatus VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L260] COND TRUE __cil_tmp29 == 259L VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L262-L263] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1066] COND FALSE !(s == MPR3) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1075] COND FALSE !(customIrp == 1) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1079] COND FALSE !(s == MPR3) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1086] int tmp_ndt_12; [L1087] tmp_ndt_12 = __VERIFIER_nondet_int() [L1088] COND TRUE tmp_ndt_12 == 0 VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, tmp_ndt_12=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1094] return (0); VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=0, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, \result=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, tmp_ndt_12=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L262-L263] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0)=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L265] COND FALSE !(disketteExtension__FloppyThread != 0) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L268] disketteExtension__FloppyThread = 0 [L269] Irp__IoStatus__Status = 0 [L270] myStatus = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L271] COND TRUE s == NP [L272] s = SKIP1 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=-1, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L279] Irp__CurrentLocation ++ [L280] Irp__Tail__Overlay__CurrentStackLocation ++ VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L281] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) VAL [\old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L968] int returnVal2 ; [L969] int compRetStatus1 ; [L970] int lcontext = __VERIFIER_nondet_int() ; [L971] unsigned long __cil_tmp7 ; VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=7, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L974] COND FALSE !(\read(compRegistered)) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=7, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L987] int tmp_ndt_10; [L988] tmp_ndt_10 = __VERIFIER_nondet_int() [L989] COND TRUE tmp_ndt_10 == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=7, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_10=0, UNLOADED=0] [L1000] returnVal2 = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=7, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_10=0, UNLOADED=0] [L1013] COND FALSE !(s == NP) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=7, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_10=0, UNLOADED=0] [L1017] COND FALSE !(s == MPR1) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=7, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_10=0, UNLOADED=0] [L1026] COND TRUE s == SKIP1 [L1027] s = SKIP2 [L1028] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=7, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_10=0, UNLOADED=0] [L1036] return (returnVal2); VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, \result=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=0, KernelMode=0, lcontext=7, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_10=0, UNLOADED=0] [L281] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IofCallDriver(disketteExtension__TargetObject, Irp)=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L281] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L427] PagingReferenceCount -- VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L428] COND TRUE PagingReferenceCount == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L431] return (ntStatus); VAL [\old(DeviceObject)=0, \old(Irp)=0, \result=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=0, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L767] RET, EXPR FloppyPnp(devobj, pirp) [L767] status = FloppyPnp(devobj, pirp) [L780] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L781] COND FALSE !(s == NP) VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L788] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L789] COND FALSE !(s == MPR3) VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L796] COND TRUE s != UNLOADED VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L797] COND TRUE status != -1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L798] COND FALSE !(s != SKIP2) VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L812] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L813] COND TRUE status != 259 VAL [compRegistered=0, customIrp=0, DC=2, devobj=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=-1, tmp_ndt_2=-2, tmp_ndt_3=-3, tmp_ndt_4=3, UNLOADED=0] [L814] CALL errorFn() VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1627] reach_error() VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 319 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.8s, OverallIterations: 52, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 11.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12144 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11863 mSDsluCounter, 69093 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49714 mSDsCounter, 2029 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18124 IncrementalHoareTripleChecker+Invalid, 20153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2029 mSolverCounterUnsat, 19379 mSDtfsCounter, 18124 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 544 GetRequests, 198 SyntacticMatches, 1 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=734occurred in iteration=20, InterpolantAutomatonStates: 361, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 51 MinimizatonAttempts, 1321 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 2234 NumberOfCodeBlocks, 2234 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2110 ConstructedInterpolants, 0 QuantifiedInterpolants, 5036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-11 23:44:34,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE