./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 11:43:19,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 11:43:19,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 11:43:19,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 11:43:19,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 11:43:19,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 11:43:19,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 11:43:19,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 11:43:19,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 11:43:19,268 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 11:43:19,269 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 11:43:19,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 11:43:19,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 11:43:19,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 11:43:19,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 11:43:19,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 11:43:19,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 11:43:19,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 11:43:19,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 11:43:19,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 11:43:19,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 11:43:19,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 11:43:19,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 11:43:19,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 11:43:19,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 11:43:19,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 11:43:19,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 11:43:19,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 11:43:19,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 11:43:19,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 11:43:19,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 11:43:19,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 11:43:19,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 11:43:19,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 11:43:19,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 11:43:19,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 11:43:19,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 11:43:19,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 11:43:19,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 11:43:19,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 11:43:19,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 11:43:19,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 11:43:19,332 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 11:43:19,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 11:43:19,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 11:43:19,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 11:43:19,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 11:43:19,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 11:43:19,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 11:43:19,334 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 11:43:19,334 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 11:43:19,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 11:43:19,335 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 11:43:19,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 11:43:19,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 11:43:19,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 11:43:19,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 11:43:19,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 11:43:19,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 11:43:19,336 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 11:43:19,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 11:43:19,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 11:43:19,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 11:43:19,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 11:43:19,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 11:43:19,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 11:43:19,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 11:43:19,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 11:43:19,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 11:43:19,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 11:43:19,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 11:43:19,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 11:43:19,339 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 11:43:19,339 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 11:43:19,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 11:43:19,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 11:43:19,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1680e665d6c38e33bd93081ad3c7b8b4f909838cd1480382a495b19dd638ce67 [2021-12-14 11:43:19,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 11:43:19,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 11:43:19,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 11:43:19,559 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 11:43:19,559 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 11:43:19,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c [2021-12-14 11:43:19,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f3442597/1069db95d56d42b5bdc8efe2afe80b35/FLAGddaf4031e [2021-12-14 11:43:20,006 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 11:43:20,006 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-1.c [2021-12-14 11:43:20,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f3442597/1069db95d56d42b5bdc8efe2afe80b35/FLAGddaf4031e [2021-12-14 11:43:20,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f3442597/1069db95d56d42b5bdc8efe2afe80b35 [2021-12-14 11:43:20,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 11:43:20,039 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 11:43:20,040 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 11:43:20,040 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 11:43:20,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 11:43:20,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1ede25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20, skipping insertion in model container [2021-12-14 11:43:20,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 11:43:20,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 11:43:20,349 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] [2021-12-14 11:43:20,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 11:43:20,357 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 11:43:20,424 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] [2021-12-14 11:43:20,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 11:43:20,434 INFO L208 MainTranslator]: Completed translation [2021-12-14 11:43:20,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20 WrapperNode [2021-12-14 11:43:20,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 11:43:20,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 11:43:20,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 11:43:20,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 11:43:20,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,503 INFO L137 Inliner]: procedures = 41, calls = 77, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 1331 [2021-12-14 11:43:20,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 11:43:20,504 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 11:43:20,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 11:43:20,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 11:43:20,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 11:43:20,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 11:43:20,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 11:43:20,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 11:43:20,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (1/1) ... [2021-12-14 11:43:20,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 11:43:20,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:43:20,590 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) [2021-12-14 11:43:20,614 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 [2021-12-14 11:43:20,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 11:43:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-14 11:43:20,642 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-14 11:43:20,642 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2021-12-14 11:43:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2021-12-14 11:43:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-14 11:43:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-14 11:43:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-14 11:43:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-14 11:43:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-14 11:43:20,643 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-14 11:43:20,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 11:43:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-14 11:43:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-14 11:43:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2021-12-14 11:43:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2021-12-14 11:43:20,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 11:43:20,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 11:43:20,843 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 11:43:20,845 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 11:43:20,849 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:20,924 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-14 11:43:20,925 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-14 11:43:20,925 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:20,935 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-14 11:43:20,935 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-14 11:43:20,944 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:20,947 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:20,952 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:20,954 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:20,956 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:20,957 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:20,960 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:21,326 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume !false; [2021-12-14 11:43:21,326 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##180: assume false; [2021-12-14 11:43:21,326 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##181: assume !false; [2021-12-14 11:43:21,326 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume !false; [2021-12-14 11:43:21,326 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##66: assume false; [2021-12-14 11:43:21,327 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##127: assume !false; [2021-12-14 11:43:21,327 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2021-12-14 11:43:21,327 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2021-12-14 11:43:21,327 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-12-14 11:43:21,327 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-12-14 11:43:21,327 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##169: assume false; [2021-12-14 11:43:21,327 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##236: assume !false; [2021-12-14 11:43:21,327 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##235: assume false; [2021-12-14 11:43:21,328 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##126: assume false; [2021-12-14 11:43:21,328 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:21,361 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-14 11:43:21,361 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-14 11:43:21,363 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:21,363 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:21,363 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:21,395 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-14 11:43:21,395 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2021-12-14 11:43:21,395 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2021-12-14 11:43:21,395 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-14 11:43:21,396 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-14 11:43:21,396 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-14 11:43:21,401 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 11:43:21,408 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 11:43:21,408 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 11:43:21,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:43:21 BoogieIcfgContainer [2021-12-14 11:43:21,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 11:43:21,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 11:43:21,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 11:43:21,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 11:43:21,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:43:20" (1/3) ... [2021-12-14 11:43:21,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626b82d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:43:21, skipping insertion in model container [2021-12-14 11:43:21,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:20" (2/3) ... [2021-12-14 11:43:21,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626b82d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:43:21, skipping insertion in model container [2021-12-14 11:43:21,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:43:21" (3/3) ... [2021-12-14 11:43:21,416 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-1.c [2021-12-14 11:43:21,419 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 11:43:21,419 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 11:43:21,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 11:43:21,454 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 11:43:21,454 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 11:43:21,470 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) [2021-12-14 11:43:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-14 11:43:21,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:21,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:21,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:21,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:21,478 INFO L85 PathProgramCache]: Analyzing trace with hash -567536429, now seen corresponding path program 1 times [2021-12-14 11:43:21,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:21,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745449346] [2021-12-14 11:43:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:21,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:21,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:21,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745449346] [2021-12-14 11:43:21,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745449346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:21,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:21,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:21,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977370829] [2021-12-14 11:43:21,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:21,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:21,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:21,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:21,676 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) [2021-12-14 11:43:21,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:21,771 INFO L93 Difference]: Finished difference Result 512 states and 797 transitions. [2021-12-14 11:43:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:21,773 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 [2021-12-14 11:43:21,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:21,782 INFO L225 Difference]: With dead ends: 512 [2021-12-14 11:43:21,782 INFO L226 Difference]: Without dead ends: 312 [2021-12-14 11:43:21,787 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:21,790 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:21,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 630 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-14 11:43:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-12-14 11:43:21,860 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) [2021-12-14 11:43:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 456 transitions. [2021-12-14 11:43:21,872 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 456 transitions. Word has length 13 [2021-12-14 11:43:21,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:21,872 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 456 transitions. [2021-12-14 11:43:21,873 INFO L471 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) [2021-12-14 11:43:21,873 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 456 transitions. [2021-12-14 11:43:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 11:43:21,875 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:21,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:21,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 11:43:21,879 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:21,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1839207005, now seen corresponding path program 1 times [2021-12-14 11:43:21,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:21,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058090107] [2021-12-14 11:43:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:21,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:21,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:21,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058090107] [2021-12-14 11:43:21,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058090107] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:21,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:21,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:21,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785516560] [2021-12-14 11:43:21,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:21,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:21,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:21,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:21,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:21,944 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) [2021-12-14 11:43:22,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:22,101 INFO L93 Difference]: Finished difference Result 564 states and 814 transitions. [2021-12-14 11:43:22,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:22,102 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 [2021-12-14 11:43:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:22,107 INFO L225 Difference]: With dead ends: 564 [2021-12-14 11:43:22,107 INFO L226 Difference]: Without dead ends: 432 [2021-12-14 11:43:22,114 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:22,115 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:22,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 761 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-12-14 11:43:22,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 413. [2021-12-14 11:43:22,143 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) [2021-12-14 11:43:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 598 transitions. [2021-12-14 11:43:22,146 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 598 transitions. Word has length 16 [2021-12-14 11:43:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:22,147 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 598 transitions. [2021-12-14 11:43:22,147 INFO L471 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) [2021-12-14 11:43:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 598 transitions. [2021-12-14 11:43:22,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 11:43:22,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:22,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:22,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 11:43:22,149 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:22,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:22,149 INFO L85 PathProgramCache]: Analyzing trace with hash -866854956, now seen corresponding path program 1 times [2021-12-14 11:43:22,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:22,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781594569] [2021-12-14 11:43:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:22,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:22,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:22,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781594569] [2021-12-14 11:43:22,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781594569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:22,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:22,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:22,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773085557] [2021-12-14 11:43:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:22,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:22,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:22,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:22,210 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) [2021-12-14 11:43:22,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:22,241 INFO L93 Difference]: Finished difference Result 520 states and 737 transitions. [2021-12-14 11:43:22,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:22,242 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 [2021-12-14 11:43:22,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:22,244 INFO L225 Difference]: With dead ends: 520 [2021-12-14 11:43:22,244 INFO L226 Difference]: Without dead ends: 499 [2021-12-14 11:43:22,245 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:22,245 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:22,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 545 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:22,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-12-14 11:43:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 467. [2021-12-14 11:43:22,263 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) [2021-12-14 11:43:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 671 transitions. [2021-12-14 11:43:22,265 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 671 transitions. Word has length 19 [2021-12-14 11:43:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:22,266 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 671 transitions. [2021-12-14 11:43:22,266 INFO L471 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) [2021-12-14 11:43:22,266 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 671 transitions. [2021-12-14 11:43:22,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 11:43:22,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:22,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:22,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 11:43:22,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash 122564209, now seen corresponding path program 1 times [2021-12-14 11:43:22,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:22,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219472811] [2021-12-14 11:43:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:22,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:22,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:22,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219472811] [2021-12-14 11:43:22,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219472811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:22,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:22,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:22,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840680059] [2021-12-14 11:43:22,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:22,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:22,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:22,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:22,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:22,323 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) [2021-12-14 11:43:22,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:22,363 INFO L93 Difference]: Finished difference Result 877 states and 1248 transitions. [2021-12-14 11:43:22,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:22,364 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 [2021-12-14 11:43:22,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:22,367 INFO L225 Difference]: With dead ends: 877 [2021-12-14 11:43:22,368 INFO L226 Difference]: Without dead ends: 646 [2021-12-14 11:43:22,369 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:22,371 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:22,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 658 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:22,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-12-14 11:43:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 621. [2021-12-14 11:43:22,400 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) [2021-12-14 11:43:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 887 transitions. [2021-12-14 11:43:22,403 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 887 transitions. Word has length 22 [2021-12-14 11:43:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:22,407 INFO L470 AbstractCegarLoop]: Abstraction has 621 states and 887 transitions. [2021-12-14 11:43:22,408 INFO L471 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) [2021-12-14 11:43:22,410 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 887 transitions. [2021-12-14 11:43:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-14 11:43:22,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:22,412 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:22,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 11:43:22,412 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:22,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:22,413 INFO L85 PathProgramCache]: Analyzing trace with hash -826632207, now seen corresponding path program 1 times [2021-12-14 11:43:22,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:22,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748890343] [2021-12-14 11:43:22,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:22,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:43:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:22,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 11:43:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:22,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:22,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748890343] [2021-12-14 11:43:22,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748890343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:22,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:22,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:43:22,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833753457] [2021-12-14 11:43:22,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:22,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:43:22,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:22,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:43:22,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:43:22,463 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) [2021-12-14 11:43:22,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:22,725 INFO L93 Difference]: Finished difference Result 690 states and 979 transitions. [2021-12-14 11:43:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 11:43:22,726 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 [2021-12-14 11:43:22,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:22,731 INFO L225 Difference]: With dead ends: 690 [2021-12-14 11:43:22,732 INFO L226 Difference]: Without dead ends: 685 [2021-12-14 11:43:22,732 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:22,733 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:22,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1263 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:22,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2021-12-14 11:43:22,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 662. [2021-12-14 11:43:22,763 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) [2021-12-14 11:43:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 942 transitions. [2021-12-14 11:43:22,767 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 942 transitions. Word has length 29 [2021-12-14 11:43:22,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:22,768 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 942 transitions. [2021-12-14 11:43:22,768 INFO L471 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) [2021-12-14 11:43:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 942 transitions. [2021-12-14 11:43:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-14 11:43:22,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:22,772 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:22,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 11:43:22,773 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash -205375591, now seen corresponding path program 1 times [2021-12-14 11:43:22,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:22,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459961234] [2021-12-14 11:43:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:22,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:22,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:22,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:22,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459961234] [2021-12-14 11:43:22,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459961234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:22,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:22,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:22,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929646495] [2021-12-14 11:43:22,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:22,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:22,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:22,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:22,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:22,829 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) [2021-12-14 11:43:22,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:22,887 INFO L93 Difference]: Finished difference Result 677 states and 962 transitions. [2021-12-14 11:43:22,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:22,888 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 [2021-12-14 11:43:22,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:22,890 INFO L225 Difference]: With dead ends: 677 [2021-12-14 11:43:22,891 INFO L226 Difference]: Without dead ends: 674 [2021-12-14 11:43:22,891 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:22,892 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:22,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 784 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:22,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-12-14 11:43:22,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 673. [2021-12-14 11:43:22,916 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) [2021-12-14 11:43:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 956 transitions. [2021-12-14 11:43:22,919 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 956 transitions. Word has length 28 [2021-12-14 11:43:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:22,920 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 956 transitions. [2021-12-14 11:43:22,920 INFO L471 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) [2021-12-14 11:43:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 956 transitions. [2021-12-14 11:43:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-14 11:43:22,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:22,921 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:22,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 11:43:22,921 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:22,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:22,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1532855089, now seen corresponding path program 1 times [2021-12-14 11:43:22,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:22,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93570196] [2021-12-14 11:43:22,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:22,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:22,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 11:43:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 11:43:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:23,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:23,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93570196] [2021-12-14 11:43:23,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93570196] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:23,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:23,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:43:23,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960689023] [2021-12-14 11:43:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:23,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:43:23,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:43:23,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:23,045 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) [2021-12-14 11:43:23,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:23,372 INFO L93 Difference]: Finished difference Result 705 states and 995 transitions. [2021-12-14 11:43:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 11:43:23,373 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 [2021-12-14 11:43:23,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:23,375 INFO L225 Difference]: With dead ends: 705 [2021-12-14 11:43:23,375 INFO L226 Difference]: Without dead ends: 696 [2021-12-14 11:43:23,376 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:23,376 INFO L933 BasicCegarLoop]: 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:23,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 1206 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-12-14 11:43:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 673. [2021-12-14 11:43:23,396 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) [2021-12-14 11:43:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 954 transitions. [2021-12-14 11:43:23,398 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 954 transitions. Word has length 31 [2021-12-14 11:43:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:23,399 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 954 transitions. [2021-12-14 11:43:23,399 INFO L471 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) [2021-12-14 11:43:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 954 transitions. [2021-12-14 11:43:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 11:43:23,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:23,400 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:23,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 11:43:23,400 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash -614943130, now seen corresponding path program 1 times [2021-12-14 11:43:23,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:23,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11790313] [2021-12-14 11:43:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:23,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 11:43:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:23,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 11:43:23,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:23,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:23,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11790313] [2021-12-14 11:43:23,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11790313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:23,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:23,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:43:23,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970890159] [2021-12-14 11:43:23,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:23,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:43:23,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:23,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:43:23,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:23,475 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) [2021-12-14 11:43:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:23,922 INFO L93 Difference]: Finished difference Result 705 states and 993 transitions. [2021-12-14 11:43:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 11:43:23,923 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 [2021-12-14 11:43:23,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:23,926 INFO L225 Difference]: With dead ends: 705 [2021-12-14 11:43:23,926 INFO L226 Difference]: Without dead ends: 696 [2021-12-14 11:43:23,927 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:23,928 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:23,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1709 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 11:43:23,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-12-14 11:43:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 673. [2021-12-14 11:43:23,957 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) [2021-12-14 11:43:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 952 transitions. [2021-12-14 11:43:23,960 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 952 transitions. Word has length 32 [2021-12-14 11:43:23,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:23,960 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 952 transitions. [2021-12-14 11:43:23,960 INFO L471 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) [2021-12-14 11:43:23,961 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 952 transitions. [2021-12-14 11:43:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 11:43:23,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:23,961 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:23,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 11:43:23,962 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:23,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1828011142, now seen corresponding path program 1 times [2021-12-14 11:43:23,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:23,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650005549] [2021-12-14 11:43:23,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:23,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 11:43:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 11:43:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:24,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:24,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650005549] [2021-12-14 11:43:24,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650005549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:24,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:24,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:24,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034636126] [2021-12-14 11:43:24,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:24,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:24,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:24,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:24,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:24,025 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) [2021-12-14 11:43:24,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:24,288 INFO L93 Difference]: Finished difference Result 705 states and 991 transitions. [2021-12-14 11:43:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 11:43:24,288 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 [2021-12-14 11:43:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:24,291 INFO L225 Difference]: With dead ends: 705 [2021-12-14 11:43:24,291 INFO L226 Difference]: Without dead ends: 690 [2021-12-14 11:43:24,291 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:24,292 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 322 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:24,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 1773 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-14 11:43:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 671. [2021-12-14 11:43:24,315 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) [2021-12-14 11:43:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 948 transitions. [2021-12-14 11:43:24,317 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 948 transitions. Word has length 33 [2021-12-14 11:43:24,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:24,318 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 948 transitions. [2021-12-14 11:43:24,318 INFO L471 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) [2021-12-14 11:43:24,318 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 948 transitions. [2021-12-14 11:43:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 11:43:24,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:24,319 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:24,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 11:43:24,319 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:24,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:24,320 INFO L85 PathProgramCache]: Analyzing trace with hash 997010243, now seen corresponding path program 1 times [2021-12-14 11:43:24,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:24,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125376277] [2021-12-14 11:43:24,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:24,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-14 11:43:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 11:43:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:24,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:24,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125376277] [2021-12-14 11:43:24,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125376277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:24,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:24,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:24,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083601585] [2021-12-14 11:43:24,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:24,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:24,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:24,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:24,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:24,369 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) [2021-12-14 11:43:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:24,571 INFO L93 Difference]: Finished difference Result 703 states and 987 transitions. [2021-12-14 11:43:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 11:43:24,571 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 [2021-12-14 11:43:24,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:24,575 INFO L225 Difference]: With dead ends: 703 [2021-12-14 11:43:24,575 INFO L226 Difference]: Without dead ends: 683 [2021-12-14 11:43:24,576 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:24,576 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 394 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:24,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1477 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2021-12-14 11:43:24,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 664. [2021-12-14 11:43:24,596 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) [2021-12-14 11:43:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 939 transitions. [2021-12-14 11:43:24,599 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 939 transitions. Word has length 32 [2021-12-14 11:43:24,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:24,599 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 939 transitions. [2021-12-14 11:43:24,599 INFO L471 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) [2021-12-14 11:43:24,599 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 939 transitions. [2021-12-14 11:43:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-14 11:43:24,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:24,601 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:24,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 11:43:24,601 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash -594269975, now seen corresponding path program 1 times [2021-12-14 11:43:24,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:24,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364956853] [2021-12-14 11:43:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:24,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:24,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:24,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364956853] [2021-12-14 11:43:24,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364956853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:24,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:24,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:24,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158405805] [2021-12-14 11:43:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:24,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:24,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:24,636 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) [2021-12-14 11:43:24,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:24,660 INFO L93 Difference]: Finished difference Result 695 states and 976 transitions. [2021-12-14 11:43:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:24,661 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 [2021-12-14 11:43:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:24,663 INFO L225 Difference]: With dead ends: 695 [2021-12-14 11:43:24,664 INFO L226 Difference]: Without dead ends: 653 [2021-12-14 11:43:24,664 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:24,665 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:24,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 882 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:24,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-12-14 11:43:24,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 648. [2021-12-14 11:43:24,684 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) [2021-12-14 11:43:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 913 transitions. [2021-12-14 11:43:24,686 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 913 transitions. Word has length 30 [2021-12-14 11:43:24,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:24,686 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 913 transitions. [2021-12-14 11:43:24,687 INFO L471 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) [2021-12-14 11:43:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 913 transitions. [2021-12-14 11:43:24,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-14 11:43:24,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:24,687 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:24,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 11:43:24,688 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:24,689 INFO L85 PathProgramCache]: Analyzing trace with hash -444205772, now seen corresponding path program 1 times [2021-12-14 11:43:24,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:24,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226782073] [2021-12-14 11:43:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:24,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:24,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226782073] [2021-12-14 11:43:24,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226782073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:24,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:24,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 11:43:24,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453386918] [2021-12-14 11:43:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:24,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 11:43:24,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:24,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 11:43:24,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 11:43:24,712 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) [2021-12-14 11:43:24,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:24,751 INFO L93 Difference]: Finished difference Result 684 states and 954 transitions. [2021-12-14 11:43:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 11:43:24,751 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 [2021-12-14 11:43:24,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:24,753 INFO L225 Difference]: With dead ends: 684 [2021-12-14 11:43:24,753 INFO L226 Difference]: Without dead ends: 664 [2021-12-14 11:43:24,754 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:24,754 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:24,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 1222 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-12-14 11:43:24,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 650. [2021-12-14 11:43:24,773 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) [2021-12-14 11:43:24,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 915 transitions. [2021-12-14 11:43:24,775 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 915 transitions. Word has length 30 [2021-12-14 11:43:24,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:24,775 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 915 transitions. [2021-12-14 11:43:24,776 INFO L471 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) [2021-12-14 11:43:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 915 transitions. [2021-12-14 11:43:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-14 11:43:24,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:24,777 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:24,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 11:43:24,777 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1157172862, now seen corresponding path program 1 times [2021-12-14 11:43:24,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:24,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865186212] [2021-12-14 11:43:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:24,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:24,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:24,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865186212] [2021-12-14 11:43:24,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865186212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:24,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:24,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 11:43:24,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525705658] [2021-12-14 11:43:24,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:24,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 11:43:24,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:24,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 11:43:24,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 11:43:24,801 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) [2021-12-14 11:43:24,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:24,844 INFO L93 Difference]: Finished difference Result 686 states and 956 transitions. [2021-12-14 11:43:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 11:43:24,844 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 [2021-12-14 11:43:24,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:24,847 INFO L225 Difference]: With dead ends: 686 [2021-12-14 11:43:24,847 INFO L226 Difference]: Without dead ends: 666 [2021-12-14 11:43:24,847 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:24,848 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:24,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1226 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:24,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-14 11:43:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 650. [2021-12-14 11:43:24,865 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) [2021-12-14 11:43:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 915 transitions. [2021-12-14 11:43:24,867 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 915 transitions. Word has length 31 [2021-12-14 11:43:24,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:24,868 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 915 transitions. [2021-12-14 11:43:24,868 INFO L471 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) [2021-12-14 11:43:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 915 transitions. [2021-12-14 11:43:24,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-14 11:43:24,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:24,869 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:24,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 11:43:24,869 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:24,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:24,869 INFO L85 PathProgramCache]: Analyzing trace with hash 791167666, now seen corresponding path program 1 times [2021-12-14 11:43:24,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:24,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319053296] [2021-12-14 11:43:24,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:24,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:24,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:24,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:24,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319053296] [2021-12-14 11:43:24,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319053296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:24,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:24,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 11:43:24,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010349690] [2021-12-14 11:43:24,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:24,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 11:43:24,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:24,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 11:43:24,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 11:43:24,898 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) [2021-12-14 11:43:25,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:25,100 INFO L93 Difference]: Finished difference Result 911 states and 1284 transitions. [2021-12-14 11:43:25,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 11:43:25,100 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 [2021-12-14 11:43:25,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:25,104 INFO L225 Difference]: With dead ends: 911 [2021-12-14 11:43:25,104 INFO L226 Difference]: Without dead ends: 908 [2021-12-14 11:43:25,104 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:25,105 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 168 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:25,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 1137 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:25,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-12-14 11:43:25,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 729. [2021-12-14 11:43:25,128 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) [2021-12-14 11:43:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1027 transitions. [2021-12-14 11:43:25,130 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1027 transitions. Word has length 34 [2021-12-14 11:43:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:25,131 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 1027 transitions. [2021-12-14 11:43:25,131 INFO L471 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) [2021-12-14 11:43:25,131 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1027 transitions. [2021-12-14 11:43:25,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 11:43:25,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:25,132 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:25,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 11:43:25,132 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:25,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:25,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1366178889, now seen corresponding path program 1 times [2021-12-14 11:43:25,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:25,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809519733] [2021-12-14 11:43:25,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:25,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:25,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 11:43:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:25,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:25,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809519733] [2021-12-14 11:43:25,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809519733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:25,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:25,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:43:25,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160432227] [2021-12-14 11:43:25,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:25,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:43:25,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:25,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:43:25,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:43:25,165 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) [2021-12-14 11:43:25,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:25,308 INFO L93 Difference]: Finished difference Result 760 states and 1064 transitions. [2021-12-14 11:43:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 11:43:25,308 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 [2021-12-14 11:43:25,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:25,311 INFO L225 Difference]: With dead ends: 760 [2021-12-14 11:43:25,311 INFO L226 Difference]: Without dead ends: 744 [2021-12-14 11:43:25,311 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:25,311 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 85 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:25,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1406 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:25,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-12-14 11:43:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 727. [2021-12-14 11:43:25,332 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) [2021-12-14 11:43:25,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1023 transitions. [2021-12-14 11:43:25,335 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1023 transitions. Word has length 33 [2021-12-14 11:43:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:25,335 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 1023 transitions. [2021-12-14 11:43:25,335 INFO L471 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) [2021-12-14 11:43:25,335 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1023 transitions. [2021-12-14 11:43:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-14 11:43:25,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:25,336 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:25,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 11:43:25,336 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1481962220, now seen corresponding path program 1 times [2021-12-14 11:43:25,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:25,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339636448] [2021-12-14 11:43:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:25,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:25,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:25,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339636448] [2021-12-14 11:43:25,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339636448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:25,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:25,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:43:25,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013596904] [2021-12-14 11:43:25,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:25,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:43:25,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:25,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:43:25,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:43:25,387 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) [2021-12-14 11:43:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:25,726 INFO L93 Difference]: Finished difference Result 1202 states and 1654 transitions. [2021-12-14 11:43:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 11:43:25,726 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 [2021-12-14 11:43:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:25,729 INFO L225 Difference]: With dead ends: 1202 [2021-12-14 11:43:25,729 INFO L226 Difference]: Without dead ends: 756 [2021-12-14 11:43:25,730 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:25,730 INFO L933 BasicCegarLoop]: 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, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:25,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 941 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:25,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-12-14 11:43:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 718. [2021-12-14 11:43:25,758 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) [2021-12-14 11:43:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1002 transitions. [2021-12-14 11:43:25,761 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1002 transitions. Word has length 35 [2021-12-14 11:43:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:25,761 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 1002 transitions. [2021-12-14 11:43:25,761 INFO L471 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) [2021-12-14 11:43:25,761 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1002 transitions. [2021-12-14 11:43:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-14 11:43:25,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:25,763 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:25,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 11:43:25,763 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:25,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:25,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1697508356, now seen corresponding path program 1 times [2021-12-14 11:43:25,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:25,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964611554] [2021-12-14 11:43:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:25,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 11:43:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:25,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:25,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964611554] [2021-12-14 11:43:25,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964611554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:25,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:25,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:43:25,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603281071] [2021-12-14 11:43:25,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:25,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:43:25,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:25,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:43:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:43:25,798 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) [2021-12-14 11:43:25,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:25,922 INFO L93 Difference]: Finished difference Result 749 states and 1039 transitions. [2021-12-14 11:43:25,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 11:43:25,922 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 [2021-12-14 11:43:25,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:25,924 INFO L225 Difference]: With dead ends: 749 [2021-12-14 11:43:25,925 INFO L226 Difference]: Without dead ends: 733 [2021-12-14 11:43:25,925 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:25,925 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 85 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1393 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:25,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 1393 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-12-14 11:43:25,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 716. [2021-12-14 11:43:25,946 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) [2021-12-14 11:43:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 998 transitions. [2021-12-14 11:43:25,948 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 998 transitions. Word has length 35 [2021-12-14 11:43:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:25,948 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 998 transitions. [2021-12-14 11:43:25,948 INFO L471 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) [2021-12-14 11:43:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 998 transitions. [2021-12-14 11:43:25,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-14 11:43:25,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:25,950 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:25,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 11:43:25,950 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:25,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1261225122, now seen corresponding path program 1 times [2021-12-14 11:43:25,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:25,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145276486] [2021-12-14 11:43:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:25,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:25,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:25,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145276486] [2021-12-14 11:43:25,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145276486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:25,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:25,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:25,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826413477] [2021-12-14 11:43:25,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:25,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:25,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:25,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:25,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:25,981 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) [2021-12-14 11:43:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:26,029 INFO L93 Difference]: Finished difference Result 1123 states and 1555 transitions. [2021-12-14 11:43:26,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:26,030 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 [2021-12-14 11:43:26,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:26,032 INFO L225 Difference]: With dead ends: 1123 [2021-12-14 11:43:26,033 INFO L226 Difference]: Without dead ends: 724 [2021-12-14 11:43:26,033 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:26,034 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:26,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 772 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-12-14 11:43:26,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 724. [2021-12-14 11:43:26,081 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) [2021-12-14 11:43:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1009 transitions. [2021-12-14 11:43:26,083 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1009 transitions. Word has length 37 [2021-12-14 11:43:26,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:26,084 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1009 transitions. [2021-12-14 11:43:26,084 INFO L471 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) [2021-12-14 11:43:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1009 transitions. [2021-12-14 11:43:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 11:43:26,085 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:26,085 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:26,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 11:43:26,085 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:26,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:26,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1321718994, now seen corresponding path program 1 times [2021-12-14 11:43:26,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:26,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202223551] [2021-12-14 11:43:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:26,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 11:43:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:26,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:26,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:26,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202223551] [2021-12-14 11:43:26,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202223551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:26,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:26,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 11:43:26,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981402256] [2021-12-14 11:43:26,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:26,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 11:43:26,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:26,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 11:43:26,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 11:43:26,126 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) [2021-12-14 11:43:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:26,291 INFO L93 Difference]: Finished difference Result 749 states and 1036 transitions. [2021-12-14 11:43:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 11:43:26,292 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 [2021-12-14 11:43:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:26,294 INFO L225 Difference]: With dead ends: 749 [2021-12-14 11:43:26,294 INFO L226 Difference]: Without dead ends: 731 [2021-12-14 11:43:26,295 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:26,295 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 96 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:26,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 1718 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-12-14 11:43:26,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 724. [2021-12-14 11:43:26,317 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) [2021-12-14 11:43:26,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 997 transitions. [2021-12-14 11:43:26,318 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 997 transitions. Word has length 38 [2021-12-14 11:43:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:26,319 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 997 transitions. [2021-12-14 11:43:26,319 INFO L471 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) [2021-12-14 11:43:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 997 transitions. [2021-12-14 11:43:26,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 11:43:26,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:26,320 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:26,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 11:43:26,320 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:26,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:26,321 INFO L85 PathProgramCache]: Analyzing trace with hash -257120717, now seen corresponding path program 1 times [2021-12-14 11:43:26,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:26,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138742650] [2021-12-14 11:43:26,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:26,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 11:43:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:26,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:26,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:26,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138742650] [2021-12-14 11:43:26,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138742650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:26,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:26,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:26,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448766041] [2021-12-14 11:43:26,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:26,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:26,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:26,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:26,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:26,358 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) [2021-12-14 11:43:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:26,645 INFO L93 Difference]: Finished difference Result 813 states and 1107 transitions. [2021-12-14 11:43:26,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 11:43:26,645 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 [2021-12-14 11:43:26,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:26,647 INFO L225 Difference]: With dead ends: 813 [2021-12-14 11:43:26,648 INFO L226 Difference]: Without dead ends: 744 [2021-12-14 11:43:26,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-14 11:43:26,648 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:26,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 1159 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-12-14 11:43:26,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 734. [2021-12-14 11:43:26,671 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) [2021-12-14 11:43:26,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1007 transitions. [2021-12-14 11:43:26,673 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1007 transitions. Word has length 38 [2021-12-14 11:43:26,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:26,673 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1007 transitions. [2021-12-14 11:43:26,673 INFO L471 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) [2021-12-14 11:43:26,674 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1007 transitions. [2021-12-14 11:43:26,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-14 11:43:26,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:26,675 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:26,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 11:43:26,675 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:26,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1774407709, now seen corresponding path program 1 times [2021-12-14 11:43:26,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:26,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98902496] [2021-12-14 11:43:26,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:26,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 11:43:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:26,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:26,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98902496] [2021-12-14 11:43:26,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98902496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:26,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:26,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:26,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540130107] [2021-12-14 11:43:26,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:26,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:26,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:26,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:26,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:26,723 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) [2021-12-14 11:43:26,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:26,900 INFO L93 Difference]: Finished difference Result 754 states and 1027 transitions. [2021-12-14 11:43:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 11:43:26,900 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 [2021-12-14 11:43:26,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:26,903 INFO L225 Difference]: With dead ends: 754 [2021-12-14 11:43:26,903 INFO L226 Difference]: Without dead ends: 732 [2021-12-14 11:43:26,903 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:26,904 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 108 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:26,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 2003 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:26,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-12-14 11:43:26,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 726. [2021-12-14 11:43:26,927 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) [2021-12-14 11:43:26,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 995 transitions. [2021-12-14 11:43:26,929 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 995 transitions. Word has length 39 [2021-12-14 11:43:26,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:26,929 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 995 transitions. [2021-12-14 11:43:26,929 INFO L471 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) [2021-12-14 11:43:26,929 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 995 transitions. [2021-12-14 11:43:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-14 11:43:26,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:26,930 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:26,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 11:43:26,931 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:26,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:26,931 INFO L85 PathProgramCache]: Analyzing trace with hash 778478368, now seen corresponding path program 1 times [2021-12-14 11:43:26,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:26,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381619208] [2021-12-14 11:43:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:26,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:26,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:26,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381619208] [2021-12-14 11:43:26,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381619208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:26,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:26,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 11:43:26,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509222173] [2021-12-14 11:43:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:26,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 11:43:26,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:26,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 11:43:26,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 11:43:26,963 INFO L87 Difference]: Start difference. First operand 726 states and 995 transitions. Second operand has 6 states, 6 states have (on average 6.0) 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) [2021-12-14 11:43:27,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:27,152 INFO L93 Difference]: Finished difference Result 748 states and 1018 transitions. [2021-12-14 11:43:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 11:43:27,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) 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 [2021-12-14 11:43:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:27,155 INFO L225 Difference]: With dead ends: 748 [2021-12-14 11:43:27,155 INFO L226 Difference]: Without dead ends: 724 [2021-12-14 11:43:27,155 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:27,156 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 312 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:27,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [336 Valid, 1351 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:27,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-12-14 11:43:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 718. [2021-12-14 11:43:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 634 states have (on average 1.3296529968454258) internal successors, (843), 645 states have internal predecessors, (843), 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) [2021-12-14 11:43:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 984 transitions. [2021-12-14 11:43:27,182 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 984 transitions. Word has length 39 [2021-12-14 11:43:27,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:27,183 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 984 transitions. [2021-12-14 11:43:27,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) 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) [2021-12-14 11:43:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 984 transitions. [2021-12-14 11:43:27,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-14 11:43:27,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:27,184 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:27,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 11:43:27,184 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:27,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:27,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1595982943, now seen corresponding path program 1 times [2021-12-14 11:43:27,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:27,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841829030] [2021-12-14 11:43:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:27,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:27,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:27,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:27,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841829030] [2021-12-14 11:43:27,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841829030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:27,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:27,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:27,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478831704] [2021-12-14 11:43:27,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:27,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:27,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:27,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:27,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:27,238 INFO L87 Difference]: Start difference. First operand 718 states and 984 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) [2021-12-14 11:43:27,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:27,435 INFO L93 Difference]: Finished difference Result 758 states and 1030 transitions. [2021-12-14 11:43:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 11:43:27,436 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 [2021-12-14 11:43:27,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:27,438 INFO L225 Difference]: With dead ends: 758 [2021-12-14 11:43:27,438 INFO L226 Difference]: Without dead ends: 738 [2021-12-14 11:43:27,439 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:27,440 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 84 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:27,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 1875 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-12-14 11:43:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 723. [2021-12-14 11:43:27,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 638 states have (on average 1.3275862068965518) internal successors, (847), 649 states have internal predecessors, (847), 57 states have call successors, (57), 24 states have call predecessors, (57), 27 states have return successors, (86), 50 states have call predecessors, (86), 49 states have call successors, (86) [2021-12-14 11:43:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 990 transitions. [2021-12-14 11:43:27,472 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 990 transitions. Word has length 39 [2021-12-14 11:43:27,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:27,473 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 990 transitions. [2021-12-14 11:43:27,473 INFO L471 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) [2021-12-14 11:43:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 990 transitions. [2021-12-14 11:43:27,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-14 11:43:27,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:27,474 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:27,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 11:43:27,474 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:27,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:27,475 INFO L85 PathProgramCache]: Analyzing trace with hash -398634571, now seen corresponding path program 1 times [2021-12-14 11:43:27,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:27,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130647161] [2021-12-14 11:43:27,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:27,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 11:43:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:27,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:27,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130647161] [2021-12-14 11:43:27,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130647161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:27,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:27,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:43:27,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104835191] [2021-12-14 11:43:27,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:27,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:43:27,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:43:27,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:43:27,507 INFO L87 Difference]: Start difference. First operand 723 states and 990 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) [2021-12-14 11:43:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:27,702 INFO L93 Difference]: Finished difference Result 807 states and 1074 transitions. [2021-12-14 11:43:27,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 11:43:27,702 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 [2021-12-14 11:43:27,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:27,704 INFO L225 Difference]: With dead ends: 807 [2021-12-14 11:43:27,704 INFO L226 Difference]: Without dead ends: 545 [2021-12-14 11:43:27,705 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:27,706 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 488 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 962 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 [2021-12-14 11:43:27,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 962 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:27,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-12-14 11:43:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 504. [2021-12-14 11:43:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 441 states have (on average 1.2947845804988662) internal successors, (571), 451 states have internal predecessors, (571), 42 states have call successors, (42), 17 states have call predecessors, (42), 20 states have return successors, (50), 36 states have call predecessors, (50), 34 states have call successors, (50) [2021-12-14 11:43:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 663 transitions. [2021-12-14 11:43:27,727 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 663 transitions. Word has length 41 [2021-12-14 11:43:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:27,728 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 663 transitions. [2021-12-14 11:43:27,728 INFO L471 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) [2021-12-14 11:43:27,728 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 663 transitions. [2021-12-14 11:43:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-14 11:43:27,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:27,729 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:27,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-14 11:43:27,729 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:27,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:27,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1554772088, now seen corresponding path program 1 times [2021-12-14 11:43:27,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:27,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503684079] [2021-12-14 11:43:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:27,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:27,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 11:43:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:27,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:27,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503684079] [2021-12-14 11:43:27,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503684079] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:27,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:27,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 11:43:27,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800843807] [2021-12-14 11:43:27,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:27,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 11:43:27,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 11:43:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 11:43:27,764 INFO L87 Difference]: Start difference. First operand 504 states and 663 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) [2021-12-14 11:43:27,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:27,920 INFO L93 Difference]: Finished difference Result 655 states and 858 transitions. [2021-12-14 11:43:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 11:43:27,921 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 [2021-12-14 11:43:27,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:27,925 INFO L225 Difference]: With dead ends: 655 [2021-12-14 11:43:27,925 INFO L226 Difference]: Without dead ends: 637 [2021-12-14 11:43:27,925 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:27,926 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 183 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 990 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 [2021-12-14 11:43:27,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 990 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:27,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-12-14 11:43:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 574. [2021-12-14 11:43:27,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 504 states have (on average 1.2837301587301588) internal successors, (647), 508 states have internal predecessors, (647), 44 states have call successors, (44), 19 states have call predecessors, (44), 25 states have return successors, (63), 47 states have call predecessors, (63), 36 states have call successors, (63) [2021-12-14 11:43:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 754 transitions. [2021-12-14 11:43:27,954 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 754 transitions. Word has length 40 [2021-12-14 11:43:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:27,954 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 754 transitions. [2021-12-14 11:43:27,954 INFO L471 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) [2021-12-14 11:43:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 754 transitions. [2021-12-14 11:43:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-14 11:43:27,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:27,955 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:27,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-14 11:43:27,955 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:27,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2126401672, now seen corresponding path program 1 times [2021-12-14 11:43:27,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:27,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934077883] [2021-12-14 11:43:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:27,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 11:43:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:28,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:28,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934077883] [2021-12-14 11:43:28,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934077883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:28,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:28,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 11:43:28,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689095311] [2021-12-14 11:43:28,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:28,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 11:43:28,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:28,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 11:43:28,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 11:43:28,002 INFO L87 Difference]: Start difference. First operand 574 states and 754 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) [2021-12-14 11:43:28,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:28,279 INFO L93 Difference]: Finished difference Result 869 states and 1158 transitions. [2021-12-14 11:43:28,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 11:43:28,279 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 [2021-12-14 11:43:28,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:28,281 INFO L225 Difference]: With dead ends: 869 [2021-12-14 11:43:28,281 INFO L226 Difference]: Without dead ends: 570 [2021-12-14 11:43:28,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-14 11:43:28,282 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 461 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:28,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [469 Valid, 1087 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:28,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-12-14 11:43:28,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 531. [2021-12-14 11:43:28,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 465 states have (on average 1.2881720430107526) internal successors, (599), 476 states have internal predecessors, (599), 43 states have call successors, (43), 18 states have call predecessors, (43), 22 states have return successors, (53), 37 states have call predecessors, (53), 35 states have call successors, (53) [2021-12-14 11:43:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 695 transitions. [2021-12-14 11:43:28,303 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 695 transitions. Word has length 40 [2021-12-14 11:43:28,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:28,303 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 695 transitions. [2021-12-14 11:43:28,303 INFO L471 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) [2021-12-14 11:43:28,303 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 695 transitions. [2021-12-14 11:43:28,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-14 11:43:28,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:28,304 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:28,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-14 11:43:28,304 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:28,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1406614257, now seen corresponding path program 1 times [2021-12-14 11:43:28,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:28,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882963758] [2021-12-14 11:43:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:28,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:28,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 11:43:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:28,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:28,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882963758] [2021-12-14 11:43:28,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882963758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:28,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:28,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:43:28,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558274673] [2021-12-14 11:43:28,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:28,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:43:28,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:43:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:28,347 INFO L87 Difference]: Start difference. First operand 531 states and 695 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) [2021-12-14 11:43:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:28,640 INFO L93 Difference]: Finished difference Result 557 states and 723 transitions. [2021-12-14 11:43:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:43:28,641 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 [2021-12-14 11:43:28,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:28,643 INFO L225 Difference]: With dead ends: 557 [2021-12-14 11:43:28,643 INFO L226 Difference]: Without dead ends: 553 [2021-12-14 11:43:28,643 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:28,643 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 82 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:28,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 1992 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-12-14 11:43:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 537. [2021-12-14 11:43:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 471 states have (on average 1.2845010615711252) internal successors, (605), 482 states have internal predecessors, (605), 43 states have call successors, (43), 18 states have call predecessors, (43), 22 states have return successors, (53), 37 states have call predecessors, (53), 35 states have call successors, (53) [2021-12-14 11:43:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 701 transitions. [2021-12-14 11:43:28,673 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 701 transitions. Word has length 41 [2021-12-14 11:43:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:28,673 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 701 transitions. [2021-12-14 11:43:28,673 INFO L471 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) [2021-12-14 11:43:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 701 transitions. [2021-12-14 11:43:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-14 11:43:28,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:28,674 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:28,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-14 11:43:28,675 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1406337427, now seen corresponding path program 1 times [2021-12-14 11:43:28,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:28,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745626676] [2021-12-14 11:43:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:28,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 11:43:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:28,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:28,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745626676] [2021-12-14 11:43:28,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745626676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:28,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:28,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:43:28,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451072863] [2021-12-14 11:43:28,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:28,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:43:28,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:28,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:43:28,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:28,733 INFO L87 Difference]: Start difference. First operand 537 states and 701 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) [2021-12-14 11:43:28,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:28,984 INFO L93 Difference]: Finished difference Result 595 states and 777 transitions. [2021-12-14 11:43:28,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:43:28,984 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 [2021-12-14 11:43:28,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:28,986 INFO L225 Difference]: With dead ends: 595 [2021-12-14 11:43:28,986 INFO L226 Difference]: Without dead ends: 582 [2021-12-14 11:43:28,986 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:28,987 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 287 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:28,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 1907 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:28,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-12-14 11:43:29,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 543. [2021-12-14 11:43:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 476 states have (on average 1.281512605042017) internal successors, (610), 488 states have internal predecessors, (610), 43 states have call successors, (43), 18 states have call predecessors, (43), 23 states have return successors, (60), 37 states have call predecessors, (60), 35 states have call successors, (60) [2021-12-14 11:43:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 713 transitions. [2021-12-14 11:43:29,006 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 713 transitions. Word has length 41 [2021-12-14 11:43:29,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:29,007 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 713 transitions. [2021-12-14 11:43:29,007 INFO L471 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) [2021-12-14 11:43:29,007 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 713 transitions. [2021-12-14 11:43:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-14 11:43:29,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:29,008 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:29,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-14 11:43:29,008 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:29,008 INFO L85 PathProgramCache]: Analyzing trace with hash 188974883, now seen corresponding path program 1 times [2021-12-14 11:43:29,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:29,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162575531] [2021-12-14 11:43:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:29,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:29,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 11:43:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:29,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:29,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162575531] [2021-12-14 11:43:29,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162575531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:29,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:29,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 11:43:29,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111128285] [2021-12-14 11:43:29,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:29,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 11:43:29,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:29,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 11:43:29,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 11:43:29,053 INFO L87 Difference]: Start difference. First operand 543 states and 713 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) [2021-12-14 11:43:29,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:29,344 INFO L93 Difference]: Finished difference Result 612 states and 797 transitions. [2021-12-14 11:43:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:43:29,345 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 [2021-12-14 11:43:29,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:29,347 INFO L225 Difference]: With dead ends: 612 [2021-12-14 11:43:29,347 INFO L226 Difference]: Without dead ends: 596 [2021-12-14 11:43:29,347 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:29,350 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 634 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1128 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 [2021-12-14 11:43:29,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 1128 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:29,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-14 11:43:29,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 529. [2021-12-14 11:43:29,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 464 states have (on average 1.2866379310344827) internal successors, (597), 475 states have internal predecessors, (597), 42 states have call successors, (42), 18 states have call predecessors, (42), 22 states have return successors, (52), 36 states have call predecessors, (52), 34 states have call successors, (52) [2021-12-14 11:43:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 691 transitions. [2021-12-14 11:43:29,371 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 691 transitions. Word has length 42 [2021-12-14 11:43:29,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:29,371 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 691 transitions. [2021-12-14 11:43:29,372 INFO L471 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) [2021-12-14 11:43:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 691 transitions. [2021-12-14 11:43:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-14 11:43:29,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:29,375 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:29,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-14 11:43:29,375 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:29,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1315082489, now seen corresponding path program 1 times [2021-12-14 11:43:29,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:29,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832617983] [2021-12-14 11:43:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:29,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 11:43:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:29,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:29,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:29,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832617983] [2021-12-14 11:43:29,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832617983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:29,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:29,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:29,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454756747] [2021-12-14 11:43:29,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:29,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:29,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:29,476 INFO L87 Difference]: Start difference. First operand 529 states and 691 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) [2021-12-14 11:43:29,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:29,678 INFO L93 Difference]: Finished difference Result 735 states and 968 transitions. [2021-12-14 11:43:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 11:43:29,678 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 [2021-12-14 11:43:29,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:29,680 INFO L225 Difference]: With dead ends: 735 [2021-12-14 11:43:29,680 INFO L226 Difference]: Without dead ends: 495 [2021-12-14 11:43:29,680 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:29,681 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 106 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:29,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 1838 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:29,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-14 11:43:29,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 483. [2021-12-14 11:43:29,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 424 states have (on average 1.2688679245283019) internal successors, (538), 431 states have internal predecessors, (538), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (47), 35 states have call predecessors, (47), 33 states have call successors, (47) [2021-12-14 11:43:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 625 transitions. [2021-12-14 11:43:29,704 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 625 transitions. Word has length 44 [2021-12-14 11:43:29,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:29,704 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 625 transitions. [2021-12-14 11:43:29,704 INFO L471 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) [2021-12-14 11:43:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 625 transitions. [2021-12-14 11:43:29,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-14 11:43:29,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:29,705 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:29,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-14 11:43:29,706 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:29,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:29,706 INFO L85 PathProgramCache]: Analyzing trace with hash 817778302, now seen corresponding path program 1 times [2021-12-14 11:43:29,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:29,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984418891] [2021-12-14 11:43:29,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:29,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 11:43:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:29,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:29,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984418891] [2021-12-14 11:43:29,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984418891] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:29,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:29,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 11:43:29,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117436303] [2021-12-14 11:43:29,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:29,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 11:43:29,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:29,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 11:43:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 11:43:29,755 INFO L87 Difference]: Start difference. First operand 483 states and 625 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) [2021-12-14 11:43:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:29,988 INFO L93 Difference]: Finished difference Result 689 states and 897 transitions. [2021-12-14 11:43:29,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 11:43:29,988 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 [2021-12-14 11:43:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:29,990 INFO L225 Difference]: With dead ends: 689 [2021-12-14 11:43:29,990 INFO L226 Difference]: Without dead ends: 495 [2021-12-14 11:43:29,991 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:29,991 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 412 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 1054 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 [2021-12-14 11:43:29,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [416 Valid, 1054 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:29,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-14 11:43:30,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 483. [2021-12-14 11:43:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 424 states have (on average 1.2641509433962264) internal successors, (536), 431 states have internal predecessors, (536), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (47), 35 states have call predecessors, (47), 33 states have call successors, (47) [2021-12-14 11:43:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 623 transitions. [2021-12-14 11:43:30,013 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 623 transitions. Word has length 46 [2021-12-14 11:43:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:30,013 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 623 transitions. [2021-12-14 11:43:30,013 INFO L471 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) [2021-12-14 11:43:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 623 transitions. [2021-12-14 11:43:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-14 11:43:30,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:30,015 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:30,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-14 11:43:30,015 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:30,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash 352065004, now seen corresponding path program 1 times [2021-12-14 11:43:30,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:30,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135462741] [2021-12-14 11:43:30,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:30,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 11:43:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:30,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:30,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135462741] [2021-12-14 11:43:30,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135462741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:30,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:30,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:43:30,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889854855] [2021-12-14 11:43:30,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:30,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:43:30,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:30,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:43:30,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:30,060 INFO L87 Difference]: Start difference. First operand 483 states and 623 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) [2021-12-14 11:43:30,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:30,333 INFO L93 Difference]: Finished difference Result 507 states and 648 transitions. [2021-12-14 11:43:30,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:43:30,333 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 [2021-12-14 11:43:30,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:30,335 INFO L225 Difference]: With dead ends: 507 [2021-12-14 11:43:30,335 INFO L226 Difference]: Without dead ends: 491 [2021-12-14 11:43:30,336 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:30,336 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 78 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1980 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 [2021-12-14 11:43:30,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 1980 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:30,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-14 11:43:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 479. [2021-12-14 11:43:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 421 states have (on average 1.2636579572446556) internal successors, (532), 428 states have internal predecessors, (532), 39 states have call successors, (39), 17 states have call predecessors, (39), 18 states have return successors, (46), 34 states have call predecessors, (46), 32 states have call successors, (46) [2021-12-14 11:43:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 617 transitions. [2021-12-14 11:43:30,362 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 617 transitions. Word has length 46 [2021-12-14 11:43:30,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:30,362 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 617 transitions. [2021-12-14 11:43:30,362 INFO L471 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) [2021-12-14 11:43:30,362 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 617 transitions. [2021-12-14 11:43:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 11:43:30,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:30,363 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:30,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-14 11:43:30,364 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2023644735, now seen corresponding path program 1 times [2021-12-14 11:43:30,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:30,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228183699] [2021-12-14 11:43:30,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:30,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 11:43:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:30,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:30,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228183699] [2021-12-14 11:43:30,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228183699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:30,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:30,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 11:43:30,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97264234] [2021-12-14 11:43:30,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:30,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 11:43:30,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 11:43:30,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:43:30,437 INFO L87 Difference]: Start difference. First operand 479 states and 617 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-12-14 11:43:30,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:30,792 INFO L93 Difference]: Finished difference Result 508 states and 648 transitions. [2021-12-14 11:43:30,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 11:43:30,793 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 6 states have internal predecessors, (42), 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 47 [2021-12-14 11:43:30,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:30,794 INFO L225 Difference]: With dead ends: 508 [2021-12-14 11:43:30,795 INFO L226 Difference]: Without dead ends: 487 [2021-12-14 11:43:30,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-14 11:43:30,795 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 153 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:30,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 2135 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:30,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-14 11:43:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 474. [2021-12-14 11:43:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 416 states have (on average 1.2620192307692308) internal successors, (525), 424 states have internal predecessors, (525), 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) [2021-12-14 11:43:30,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 609 transitions. [2021-12-14 11:43:30,814 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 609 transitions. Word has length 47 [2021-12-14 11:43:30,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:30,814 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 609 transitions. [2021-12-14 11:43:30,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 6 states have internal predecessors, (42), 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) [2021-12-14 11:43:30,815 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 609 transitions. [2021-12-14 11:43:30,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 11:43:30,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:30,816 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:30,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-14 11:43:30,816 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:30,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:30,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2034962301, now seen corresponding path program 1 times [2021-12-14 11:43:30,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:30,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999790458] [2021-12-14 11:43:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:30,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:30,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 11:43:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:30,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:30,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999790458] [2021-12-14 11:43:30,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999790458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:30,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:30,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:30,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030595286] [2021-12-14 11:43:30,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:30,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:30,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:30,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:30,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:30,855 INFO L87 Difference]: Start difference. First operand 474 states and 609 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) [2021-12-14 11:43:31,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:31,153 INFO L93 Difference]: Finished difference Result 516 states and 653 transitions. [2021-12-14 11:43:31,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 11:43:31,153 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 [2021-12-14 11:43:31,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:31,155 INFO L225 Difference]: With dead ends: 516 [2021-12-14 11:43:31,155 INFO L226 Difference]: Without dead ends: 498 [2021-12-14 11:43:31,156 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:31,156 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 171 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:31,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1542 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:31,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-12-14 11:43:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 473. [2021-12-14 11:43:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 416 states have (on average 1.2596153846153846) internal successors, (524), 423 states have internal predecessors, (524), 38 states have call successors, (38), 17 states have call predecessors, (38), 18 states have return successors, (44), 33 states have call predecessors, (44), 31 states have call successors, (44) [2021-12-14 11:43:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 606 transitions. [2021-12-14 11:43:31,177 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 606 transitions. Word has length 48 [2021-12-14 11:43:31,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:31,177 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 606 transitions. [2021-12-14 11:43:31,177 INFO L471 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) [2021-12-14 11:43:31,177 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 606 transitions. [2021-12-14 11:43:31,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-14 11:43:31,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:31,178 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:31,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-14 11:43:31,179 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1900155685, now seen corresponding path program 1 times [2021-12-14 11:43:31,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:31,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176653365] [2021-12-14 11:43:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:31,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 11:43:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:31,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:31,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:31,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176653365] [2021-12-14 11:43:31,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176653365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:31,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:31,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 11:43:31,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609299803] [2021-12-14 11:43:31,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:31,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 11:43:31,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:31,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 11:43:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 11:43:31,225 INFO L87 Difference]: Start difference. First operand 473 states and 606 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) [2021-12-14 11:43:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:31,398 INFO L93 Difference]: Finished difference Result 752 states and 964 transitions. [2021-12-14 11:43:31,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 11:43:31,398 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 [2021-12-14 11:43:31,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:31,400 INFO L225 Difference]: With dead ends: 752 [2021-12-14 11:43:31,400 INFO L226 Difference]: Without dead ends: 564 [2021-12-14 11:43:31,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:43:31,402 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:31,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 889 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:31,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-12-14 11:43:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 526. [2021-12-14 11:43:31,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 464 states have (on average 1.2607758620689655) internal successors, (585), 470 states have internal predecessors, (585), 40 states have call successors, (40), 19 states have call predecessors, (40), 21 states have return successors, (50), 37 states have call predecessors, (50), 34 states have call successors, (50) [2021-12-14 11:43:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 675 transitions. [2021-12-14 11:43:31,423 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 675 transitions. Word has length 49 [2021-12-14 11:43:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:31,423 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 675 transitions. [2021-12-14 11:43:31,423 INFO L471 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) [2021-12-14 11:43:31,423 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 675 transitions. [2021-12-14 11:43:31,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 11:43:31,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:31,424 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:31,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-14 11:43:31,424 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:31,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:31,425 INFO L85 PathProgramCache]: Analyzing trace with hash 785908469, now seen corresponding path program 1 times [2021-12-14 11:43:31,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:31,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100471798] [2021-12-14 11:43:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:31,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:31,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:31,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100471798] [2021-12-14 11:43:31,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100471798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:31,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:31,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 11:43:31,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907175597] [2021-12-14 11:43:31,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:31,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 11:43:31,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:31,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 11:43:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:43:31,458 INFO L87 Difference]: Start difference. First operand 526 states and 675 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) [2021-12-14 11:43:31,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:31,614 INFO L93 Difference]: Finished difference Result 630 states and 797 transitions. [2021-12-14 11:43:31,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 11:43:31,615 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 [2021-12-14 11:43:31,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:31,617 INFO L225 Difference]: With dead ends: 630 [2021-12-14 11:43:31,617 INFO L226 Difference]: Without dead ends: 544 [2021-12-14 11:43:31,617 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:31,618 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 74 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:31,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1153 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-12-14 11:43:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 528. [2021-12-14 11:43:31,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 466 states have (on average 1.259656652360515) internal successors, (587), 472 states have internal predecessors, (587), 40 states have call successors, (40), 19 states have call predecessors, (40), 21 states have return successors, (50), 37 states have call predecessors, (50), 34 states have call successors, (50) [2021-12-14 11:43:31,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 677 transitions. [2021-12-14 11:43:31,638 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 677 transitions. Word has length 48 [2021-12-14 11:43:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:31,639 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 677 transitions. [2021-12-14 11:43:31,639 INFO L471 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) [2021-12-14 11:43:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 677 transitions. [2021-12-14 11:43:31,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 11:43:31,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:31,640 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:31,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-14 11:43:31,640 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:31,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1427465013, now seen corresponding path program 1 times [2021-12-14 11:43:31,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:31,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713758578] [2021-12-14 11:43:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:31,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:31,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:31,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:31,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:31,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:31,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713758578] [2021-12-14 11:43:31,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713758578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:31,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:31,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:43:31,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579228581] [2021-12-14 11:43:31,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:31,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:43:31,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:31,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:43:31,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:31,686 INFO L87 Difference]: Start difference. First operand 528 states and 677 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) [2021-12-14 11:43:31,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:31,901 INFO L93 Difference]: Finished difference Result 550 states and 698 transitions. [2021-12-14 11:43:31,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:43:31,901 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 [2021-12-14 11:43:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:31,903 INFO L225 Difference]: With dead ends: 550 [2021-12-14 11:43:31,903 INFO L226 Difference]: Without dead ends: 528 [2021-12-14 11:43:31,903 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:31,904 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 82 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:31,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 2057 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-12-14 11:43:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 516. [2021-12-14 11:43:31,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 455 states have (on average 1.254945054945055) internal successors, (571), 460 states have internal predecessors, (571), 39 states have call successors, (39), 19 states have call predecessors, (39), 21 states have return successors, (50), 37 states have call predecessors, (50), 34 states have call successors, (50) [2021-12-14 11:43:31,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 660 transitions. [2021-12-14 11:43:31,924 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 660 transitions. Word has length 48 [2021-12-14 11:43:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:31,924 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 660 transitions. [2021-12-14 11:43:31,924 INFO L471 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) [2021-12-14 11:43:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 660 transitions. [2021-12-14 11:43:31,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 11:43:31,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:31,929 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:31,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-14 11:43:31,930 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:31,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:31,932 INFO L85 PathProgramCache]: Analyzing trace with hash 827652383, now seen corresponding path program 1 times [2021-12-14 11:43:31,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:31,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174885640] [2021-12-14 11:43:31,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:31,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:31,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 11:43:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:31,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:31,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174885640] [2021-12-14 11:43:31,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174885640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:31,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:31,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:31,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704159308] [2021-12-14 11:43:31,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:31,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:31,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:31,989 INFO L87 Difference]: Start difference. First operand 516 states and 660 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) [2021-12-14 11:43:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:32,211 INFO L93 Difference]: Finished difference Result 778 states and 999 transitions. [2021-12-14 11:43:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 11:43:32,211 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 [2021-12-14 11:43:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:32,215 INFO L225 Difference]: With dead ends: 778 [2021-12-14 11:43:32,215 INFO L226 Difference]: Without dead ends: 557 [2021-12-14 11:43:32,216 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:32,216 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 85 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:32,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 1879 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:32,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-12-14 11:43:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 516. [2021-12-14 11:43:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 455 states have (on average 1.2505494505494505) internal successors, (569), 460 states have internal predecessors, (569), 39 states have call successors, (39), 19 states have call predecessors, (39), 21 states have return successors, (50), 37 states have call predecessors, (50), 34 states have call successors, (50) [2021-12-14 11:43:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 658 transitions. [2021-12-14 11:43:32,238 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 658 transitions. Word has length 51 [2021-12-14 11:43:32,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:32,238 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 658 transitions. [2021-12-14 11:43:32,239 INFO L471 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) [2021-12-14 11:43:32,239 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 658 transitions. [2021-12-14 11:43:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 11:43:32,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:32,240 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:32,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-14 11:43:32,240 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:32,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:32,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1569541776, now seen corresponding path program 1 times [2021-12-14 11:43:32,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:32,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664329270] [2021-12-14 11:43:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:32,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 11:43:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:32,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:32,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664329270] [2021-12-14 11:43:32,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664329270] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:32,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:32,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:43:32,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345396125] [2021-12-14 11:43:32,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:32,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:43:32,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:32,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:43:32,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:32,305 INFO L87 Difference]: Start difference. First operand 516 states and 658 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) [2021-12-14 11:43:32,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:32,605 INFO L93 Difference]: Finished difference Result 547 states and 689 transitions. [2021-12-14 11:43:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:43:32,605 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 [2021-12-14 11:43:32,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:32,607 INFO L225 Difference]: With dead ends: 547 [2021-12-14 11:43:32,607 INFO L226 Difference]: Without dead ends: 523 [2021-12-14 11:43:32,608 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:32,608 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 128 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:32,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1791 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-12-14 11:43:32,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 510. [2021-12-14 11:43:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 450 states have (on average 1.2533333333333334) internal successors, (564), 456 states have internal predecessors, (564), 38 states have call successors, (38), 19 states have call predecessors, (38), 21 states have return successors, (48), 35 states have call predecessors, (48), 33 states have call successors, (48) [2021-12-14 11:43:32,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 650 transitions. [2021-12-14 11:43:32,628 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 650 transitions. Word has length 51 [2021-12-14 11:43:32,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:32,628 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 650 transitions. [2021-12-14 11:43:32,628 INFO L471 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) [2021-12-14 11:43:32,628 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 650 transitions. [2021-12-14 11:43:32,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 11:43:32,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:32,629 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:32,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-14 11:43:32,630 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash -838228602, now seen corresponding path program 1 times [2021-12-14 11:43:32,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:32,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850793940] [2021-12-14 11:43:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:32,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:32,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 11:43:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:32,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:32,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:32,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850793940] [2021-12-14 11:43:32,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850793940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:32,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:32,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:32,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877697537] [2021-12-14 11:43:32,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:32,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:32,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:32,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:32,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:32,678 INFO L87 Difference]: Start difference. First operand 510 states and 650 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) [2021-12-14 11:43:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:32,951 INFO L93 Difference]: Finished difference Result 541 states and 683 transitions. [2021-12-14 11:43:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 11:43:32,952 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 [2021-12-14 11:43:32,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:32,954 INFO L225 Difference]: With dead ends: 541 [2021-12-14 11:43:32,954 INFO L226 Difference]: Without dead ends: 518 [2021-12-14 11:43:32,954 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:32,954 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 153 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:32,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 1569 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-12-14 11:43:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 492. [2021-12-14 11:43:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 434 states have (on average 1.2580645161290323) internal successors, (546), 440 states have internal predecessors, (546), 37 states have call successors, (37), 18 states have call predecessors, (37), 20 states have return successors, (47), 34 states have call predecessors, (47), 32 states have call successors, (47) [2021-12-14 11:43:32,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 630 transitions. [2021-12-14 11:43:32,973 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 630 transitions. Word has length 52 [2021-12-14 11:43:32,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:32,974 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 630 transitions. [2021-12-14 11:43:32,974 INFO L471 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) [2021-12-14 11:43:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 630 transitions. [2021-12-14 11:43:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 11:43:32,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:32,975 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:32,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-14 11:43:32,975 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:32,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:32,975 INFO L85 PathProgramCache]: Analyzing trace with hash 142934411, now seen corresponding path program 1 times [2021-12-14 11:43:32,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:32,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845850569] [2021-12-14 11:43:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:32,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:33,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-14 11:43:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:33,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:33,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845850569] [2021-12-14 11:43:33,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845850569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:33,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:33,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 11:43:33,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870014808] [2021-12-14 11:43:33,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:33,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 11:43:33,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 11:43:33,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:43:33,026 INFO L87 Difference]: Start difference. First operand 492 states and 630 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) [2021-12-14 11:43:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:33,330 INFO L93 Difference]: Finished difference Result 519 states and 659 transitions. [2021-12-14 11:43:33,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 11:43:33,330 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 [2021-12-14 11:43:33,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:33,332 INFO L225 Difference]: With dead ends: 519 [2021-12-14 11:43:33,332 INFO L226 Difference]: Without dead ends: 500 [2021-12-14 11:43:33,332 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:33,333 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 86 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2096 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:33,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 2096 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-14 11:43:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 488. [2021-12-14 11:43:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 431 states have (on average 1.25754060324826) internal successors, (542), 437 states have internal predecessors, (542), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (46), 33 states have call predecessors, (46), 31 states have call successors, (46) [2021-12-14 11:43:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 624 transitions. [2021-12-14 11:43:33,352 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 624 transitions. Word has length 51 [2021-12-14 11:43:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:33,352 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 624 transitions. [2021-12-14 11:43:33,353 INFO L471 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) [2021-12-14 11:43:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 624 transitions. [2021-12-14 11:43:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 11:43:33,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:33,354 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:33,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-14 11:43:33,354 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:33,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash -645897843, now seen corresponding path program 1 times [2021-12-14 11:43:33,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:33,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522153347] [2021-12-14 11:43:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:33,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 11:43:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:33,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:33,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522153347] [2021-12-14 11:43:33,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522153347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:33,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:33,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 11:43:33,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410280538] [2021-12-14 11:43:33,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:33,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 11:43:33,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:33,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 11:43:33,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:43:33,400 INFO L87 Difference]: Start difference. First operand 488 states and 624 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) [2021-12-14 11:43:33,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:33,698 INFO L93 Difference]: Finished difference Result 515 states and 653 transitions. [2021-12-14 11:43:33,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 11:43:33,699 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 [2021-12-14 11:43:33,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:33,700 INFO L225 Difference]: With dead ends: 515 [2021-12-14 11:43:33,700 INFO L226 Difference]: Without dead ends: 495 [2021-12-14 11:43:33,701 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:33,701 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 86 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:33,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 2058 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-14 11:43:33,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 483. [2021-12-14 11:43:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 427 states have (on average 1.2576112412177987) internal successors, (537), 433 states have internal predecessors, (537), 35 states have call successors, (35), 18 states have call predecessors, (35), 20 states have return successors, (45), 32 states have call predecessors, (45), 30 states have call successors, (45) [2021-12-14 11:43:33,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 617 transitions. [2021-12-14 11:43:33,725 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 617 transitions. Word has length 52 [2021-12-14 11:43:33,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:33,725 INFO L470 AbstractCegarLoop]: Abstraction has 483 states and 617 transitions. [2021-12-14 11:43:33,726 INFO L471 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) [2021-12-14 11:43:33,726 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 617 transitions. [2021-12-14 11:43:33,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 11:43:33,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:33,728 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:33,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-14 11:43:33,728 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash -403019245, now seen corresponding path program 1 times [2021-12-14 11:43:33,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:33,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158785813] [2021-12-14 11:43:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:33,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:33,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 11:43:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:33,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:33,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:33,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158785813] [2021-12-14 11:43:33,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158785813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:33,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:33,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 11:43:33,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409614487] [2021-12-14 11:43:33,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:33,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 11:43:33,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 11:43:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:43:33,784 INFO L87 Difference]: Start difference. First operand 483 states and 617 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) [2021-12-14 11:43:34,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:34,063 INFO L93 Difference]: Finished difference Result 510 states and 646 transitions. [2021-12-14 11:43:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 11:43:34,064 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 [2021-12-14 11:43:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:34,069 INFO L225 Difference]: With dead ends: 510 [2021-12-14 11:43:34,073 INFO L226 Difference]: Without dead ends: 491 [2021-12-14 11:43:34,074 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:34,074 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 86 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:34,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 2012 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-14 11:43:34,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 479. [2021-12-14 11:43:34,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 424 states have (on average 1.2570754716981132) internal successors, (533), 430 states have internal predecessors, (533), 34 states have call successors, (34), 18 states have call predecessors, (34), 20 states have return successors, (44), 31 states have call predecessors, (44), 29 states have call successors, (44) [2021-12-14 11:43:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 611 transitions. [2021-12-14 11:43:34,094 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 611 transitions. Word has length 52 [2021-12-14 11:43:34,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:34,095 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 611 transitions. [2021-12-14 11:43:34,095 INFO L471 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) [2021-12-14 11:43:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 611 transitions. [2021-12-14 11:43:34,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 11:43:34,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:34,096 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:34,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-14 11:43:34,096 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:34,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash 516067612, now seen corresponding path program 1 times [2021-12-14 11:43:34,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:34,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560853321] [2021-12-14 11:43:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:34,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-14 11:43:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:34,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:34,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560853321] [2021-12-14 11:43:34,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560853321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:34,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:34,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:43:34,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503771159] [2021-12-14 11:43:34,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:34,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:43:34,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:34,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:43:34,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:34,142 INFO L87 Difference]: Start difference. First operand 479 states and 611 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) [2021-12-14 11:43:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:34,376 INFO L93 Difference]: Finished difference Result 502 states and 635 transitions. [2021-12-14 11:43:34,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:43:34,376 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 [2021-12-14 11:43:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:34,378 INFO L225 Difference]: With dead ends: 502 [2021-12-14 11:43:34,378 INFO L226 Difference]: Without dead ends: 482 [2021-12-14 11:43:34,379 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:34,379 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 76 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:34,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 1827 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-12-14 11:43:34,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 470. [2021-12-14 11:43:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 416 states have (on average 1.2548076923076923) internal successors, (522), 422 states have internal predecessors, (522), 33 states have call successors, (33), 18 states have call predecessors, (33), 20 states have return successors, (43), 30 states have call predecessors, (43), 28 states have call successors, (43) [2021-12-14 11:43:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 598 transitions. [2021-12-14 11:43:34,398 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 598 transitions. Word has length 52 [2021-12-14 11:43:34,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:34,398 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 598 transitions. [2021-12-14 11:43:34,398 INFO L471 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) [2021-12-14 11:43:34,398 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 598 transitions. [2021-12-14 11:43:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 11:43:34,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:34,399 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:34,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-14 11:43:34,399 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:34,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1195477270, now seen corresponding path program 1 times [2021-12-14 11:43:34,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:34,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499180096] [2021-12-14 11:43:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:34,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 11:43:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:34,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:34,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499180096] [2021-12-14 11:43:34,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499180096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:34,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:34,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:34,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057340814] [2021-12-14 11:43:34,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:34,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:34,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:34,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:34,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:34,454 INFO L87 Difference]: Start difference. First operand 470 states and 598 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) [2021-12-14 11:43:34,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:34,668 INFO L93 Difference]: Finished difference Result 824 states and 1065 transitions. [2021-12-14 11:43:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 11:43:34,668 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 [2021-12-14 11:43:34,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:34,670 INFO L225 Difference]: With dead ends: 824 [2021-12-14 11:43:34,670 INFO L226 Difference]: Without dead ends: 614 [2021-12-14 11:43:34,670 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:34,670 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 137 mSDsluCounter, 1574 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:34,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 1974 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-14 11:43:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 470. [2021-12-14 11:43:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 416 states have (on average 1.2524038461538463) internal successors, (521), 422 states have internal predecessors, (521), 33 states have call successors, (33), 18 states have call predecessors, (33), 20 states have return successors, (43), 30 states have call predecessors, (43), 28 states have call successors, (43) [2021-12-14 11:43:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 597 transitions. [2021-12-14 11:43:34,690 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 597 transitions. Word has length 54 [2021-12-14 11:43:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:34,690 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 597 transitions. [2021-12-14 11:43:34,690 INFO L471 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) [2021-12-14 11:43:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 597 transitions. [2021-12-14 11:43:34,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-14 11:43:34,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:34,691 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:34,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-14 11:43:34,692 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:34,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1152536109, now seen corresponding path program 1 times [2021-12-14 11:43:34,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:34,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504267792] [2021-12-14 11:43:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:34,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:34,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 11:43:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:34,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:34,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504267792] [2021-12-14 11:43:34,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504267792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:34,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:34,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 11:43:34,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548199580] [2021-12-14 11:43:34,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:34,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 11:43:34,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:34,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 11:43:34,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-14 11:43:34,750 INFO L87 Difference]: Start difference. First operand 470 states and 597 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-12-14 11:43:35,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:35,125 INFO L93 Difference]: Finished difference Result 496 states and 624 transitions. [2021-12-14 11:43:35,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 11:43:35,126 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 56 [2021-12-14 11:43:35,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:35,127 INFO L225 Difference]: With dead ends: 496 [2021-12-14 11:43:35,127 INFO L226 Difference]: Without dead ends: 449 [2021-12-14 11:43:35,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-14 11:43:35,128 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 143 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:35,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 2007 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:35,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-12-14 11:43:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 434. [2021-12-14 11:43:35,146 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) [2021-12-14 11:43:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 550 transitions. [2021-12-14 11:43:35,147 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 550 transitions. Word has length 56 [2021-12-14 11:43:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:35,147 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 550 transitions. [2021-12-14 11:43:35,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-12-14 11:43:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 550 transitions. [2021-12-14 11:43:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-14 11:43:35,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:35,148 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:35,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-14 11:43:35,148 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:35,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:35,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1692249118, now seen corresponding path program 1 times [2021-12-14 11:43:35,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:35,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747386369] [2021-12-14 11:43:35,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:35,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 11:43:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:35,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:35,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747386369] [2021-12-14 11:43:35,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747386369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:35,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:35,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 11:43:35,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679715150] [2021-12-14 11:43:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:35,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 11:43:35,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:35,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 11:43:35,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:43:35,192 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) [2021-12-14 11:43:35,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:35,469 INFO L93 Difference]: Finished difference Result 461 states and 579 transitions. [2021-12-14 11:43:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 11:43:35,470 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 [2021-12-14 11:43:35,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:35,471 INFO L225 Difference]: With dead ends: 461 [2021-12-14 11:43:35,471 INFO L226 Difference]: Without dead ends: 424 [2021-12-14 11:43:35,471 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:35,472 INFO L933 BasicCegarLoop]: 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 [2021-12-14 11:43:35,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1603 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-14 11:43:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 412. [2021-12-14 11:43:35,487 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) [2021-12-14 11:43:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 522 transitions. [2021-12-14 11:43:35,488 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 522 transitions. Word has length 56 [2021-12-14 11:43:35,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:35,488 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 522 transitions. [2021-12-14 11:43:35,488 INFO L471 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) [2021-12-14 11:43:35,488 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 522 transitions. [2021-12-14 11:43:35,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 11:43:35,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:35,489 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:35,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-14 11:43:35,489 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:35,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:35,489 INFO L85 PathProgramCache]: Analyzing trace with hash 835021725, now seen corresponding path program 1 times [2021-12-14 11:43:35,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:35,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864239894] [2021-12-14 11:43:35,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:35,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 11:43:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:35,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 11:43:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:35,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:35,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864239894] [2021-12-14 11:43:35,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864239894] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:35,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:35,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 11:43:35,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565649133] [2021-12-14 11:43:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:35,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 11:43:35,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 11:43:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:35,543 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) [2021-12-14 11:43:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:35,715 INFO L93 Difference]: Finished difference Result 630 states and 796 transitions. [2021-12-14 11:43:35,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 11:43:35,716 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 [2021-12-14 11:43:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:35,717 INFO L225 Difference]: With dead ends: 630 [2021-12-14 11:43:35,717 INFO L226 Difference]: Without dead ends: 399 [2021-12-14 11:43:35,718 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:35,718 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 262 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:35,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 895 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-12-14 11:43:35,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 379. [2021-12-14 11:43:35,733 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) [2021-12-14 11:43:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 472 transitions. [2021-12-14 11:43:35,734 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 472 transitions. Word has length 62 [2021-12-14 11:43:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:35,734 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 472 transitions. [2021-12-14 11:43:35,734 INFO L471 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) [2021-12-14 11:43:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 472 transitions. [2021-12-14 11:43:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 11:43:35,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:35,735 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:35,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-14 11:43:35,735 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1658087328, now seen corresponding path program 1 times [2021-12-14 11:43:35,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:35,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886984274] [2021-12-14 11:43:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:35,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-14 11:43:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 11:43:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:35,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:35,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886984274] [2021-12-14 11:43:35,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886984274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:35,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:35,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 11:43:35,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011326629] [2021-12-14 11:43:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:35,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 11:43:35,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 11:43:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-14 11:43:35,789 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) [2021-12-14 11:43:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:36,081 INFO L93 Difference]: Finished difference Result 428 states and 527 transitions. [2021-12-14 11:43:36,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 11:43:36,082 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 [2021-12-14 11:43:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:36,087 INFO L225 Difference]: With dead ends: 428 [2021-12-14 11:43:36,088 INFO L226 Difference]: Without dead ends: 409 [2021-12-14 11:43:36,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-14 11:43:36,088 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 360 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:36,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1397 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:36,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-12-14 11:43:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 379. [2021-12-14 11:43:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 337 states have (on average 1.2433234421364985) internal successors, (419), 341 states have internal predecessors, (419), 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) [2021-12-14 11:43:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 471 transitions. [2021-12-14 11:43:36,105 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 471 transitions. Word has length 66 [2021-12-14 11:43:36,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:36,105 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 471 transitions. [2021-12-14 11:43:36,106 INFO L471 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) [2021-12-14 11:43:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 471 transitions. [2021-12-14 11:43:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-14 11:43:36,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:36,107 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:36,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-14 11:43:36,108 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:36,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:36,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1960160443, now seen corresponding path program 1 times [2021-12-14 11:43:36,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:36,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335760723] [2021-12-14 11:43:36,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:36,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:36,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 11:43:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 11:43:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:36,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:36,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335760723] [2021-12-14 11:43:36,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335760723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:36,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:36,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 11:43:36,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887985006] [2021-12-14 11:43:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:36,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:43:36,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:36,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:43:36,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:36,172 INFO L87 Difference]: Start difference. First operand 379 states and 471 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) [2021-12-14 11:43:36,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:36,524 INFO L93 Difference]: Finished difference Result 772 states and 941 transitions. [2021-12-14 11:43:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:43:36,525 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 [2021-12-14 11:43:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:36,526 INFO L225 Difference]: With dead ends: 772 [2021-12-14 11:43:36,526 INFO L226 Difference]: Without dead ends: 493 [2021-12-14 11:43:36,527 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:36,527 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 504 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:36,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 1253 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:36,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-12-14 11:43:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 473. [2021-12-14 11:43:36,552 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) [2021-12-14 11:43:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 576 transitions. [2021-12-14 11:43:36,553 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 576 transitions. Word has length 68 [2021-12-14 11:43:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:36,553 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 576 transitions. [2021-12-14 11:43:36,553 INFO L471 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) [2021-12-14 11:43:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 576 transitions. [2021-12-14 11:43:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-14 11:43:36,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:36,554 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:36,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-14 11:43:36,554 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:36,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:36,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2018739242, now seen corresponding path program 1 times [2021-12-14 11:43:36,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:36,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998334297] [2021-12-14 11:43:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:36,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 11:43:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 11:43:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:36,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 11:43:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:36,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:36,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998334297] [2021-12-14 11:43:36,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998334297] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:36,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:36,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 11:43:36,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023010520] [2021-12-14 11:43:36,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:36,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 11:43:36,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:36,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 11:43:36,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-14 11:43:36,617 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) [2021-12-14 11:43:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:37,006 INFO L93 Difference]: Finished difference Result 476 states and 578 transitions. [2021-12-14 11:43:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 11:43:37,007 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 [2021-12-14 11:43:37,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:37,008 INFO L225 Difference]: With dead ends: 476 [2021-12-14 11:43:37,008 INFO L226 Difference]: Without dead ends: 423 [2021-12-14 11:43:37,009 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:37,009 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 220 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:37,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 1461 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:37,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-12-14 11:43:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 420. [2021-12-14 11:43:37,029 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) [2021-12-14 11:43:37,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 514 transitions. [2021-12-14 11:43:37,029 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 514 transitions. Word has length 69 [2021-12-14 11:43:37,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:37,029 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 514 transitions. [2021-12-14 11:43:37,029 INFO L471 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) [2021-12-14 11:43:37,030 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 514 transitions. [2021-12-14 11:43:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 11:43:37,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:37,030 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:37,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-14 11:43:37,030 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:37,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:37,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2014497479, now seen corresponding path program 1 times [2021-12-14 11:43:37,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:37,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753583221] [2021-12-14 11:43:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:37,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-14 11:43:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 11:43:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:37,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:37,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753583221] [2021-12-14 11:43:37,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753583221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:37,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:37,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 11:43:37,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293001644] [2021-12-14 11:43:37,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:37,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 11:43:37,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:37,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 11:43:37,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 11:43:37,079 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) [2021-12-14 11:43:37,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:37,304 INFO L93 Difference]: Finished difference Result 578 states and 707 transitions. [2021-12-14 11:43:37,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 11:43:37,305 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 [2021-12-14 11:43:37,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:37,306 INFO L225 Difference]: With dead ends: 578 [2021-12-14 11:43:37,306 INFO L226 Difference]: Without dead ends: 447 [2021-12-14 11:43:37,306 INFO L932 BasicCegarLoop]: 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 [2021-12-14 11:43:37,307 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 123 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:37,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 1480 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:37,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-14 11:43:37,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 431. [2021-12-14 11:43:37,325 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) [2021-12-14 11:43:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 520 transitions. [2021-12-14 11:43:37,325 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 520 transitions. Word has length 71 [2021-12-14 11:43:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:37,326 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 520 transitions. [2021-12-14 11:43:37,326 INFO L471 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) [2021-12-14 11:43:37,326 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 520 transitions. [2021-12-14 11:43:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 11:43:37,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:37,327 INFO L514 BasicCegarLoop]: 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] [2021-12-14 11:43:37,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-14 11:43:37,327 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:37,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1484321657, now seen corresponding path program 1 times [2021-12-14 11:43:37,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:37,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783890785] [2021-12-14 11:43:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:37,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 11:43:37,340 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 11:43:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 11:43:37,381 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 11:43:37,381 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 11:43:37,382 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 11:43:37,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-14 11:43:37,386 INFO L732 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, 1] [2021-12-14 11:43:37,388 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 11:43:37,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:43:37 BoogieIcfgContainer [2021-12-14 11:43:37,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 11:43:37,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 11:43:37,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 11:43:37,487 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 11:43:37,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:43:21" (3/4) ... [2021-12-14 11:43:37,489 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-14 11:43:37,556 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 11:43:37,556 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 11:43:37,557 INFO L158 Benchmark]: Toolchain (without parser) took 17517.94ms. Allocated memory was 96.5MB in the beginning and 390.1MB in the end (delta: 293.6MB). Free memory was 63.2MB in the beginning and 338.4MB in the end (delta: -275.2MB). Peak memory consumption was 235.5MB. Max. memory is 16.1GB. [2021-12-14 11:43:37,557 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 11:43:37,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.49ms. Allocated memory is still 96.5MB. Free memory was 63.0MB in the beginning and 57.6MB in the end (delta: 5.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 11:43:37,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.98ms. Allocated memory is still 96.5MB. Free memory was 57.6MB in the beginning and 51.1MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-14 11:43:37,557 INFO L158 Benchmark]: Boogie Preprocessor took 61.80ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 51.1MB in the beginning and 91.4MB in the end (delta: -40.3MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2021-12-14 11:43:37,558 INFO L158 Benchmark]: RCFGBuilder took 843.38ms. Allocated memory is still 119.5MB. Free memory was 91.4MB in the beginning and 85.2MB in the end (delta: 6.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2021-12-14 11:43:37,558 INFO L158 Benchmark]: TraceAbstraction took 16075.35ms. Allocated memory was 119.5MB in the beginning and 390.1MB in the end (delta: 270.5MB). Free memory was 84.8MB in the beginning and 133.4MB in the end (delta: -48.5MB). Peak memory consumption was 223.0MB. Max. memory is 16.1GB. [2021-12-14 11:43:37,558 INFO L158 Benchmark]: Witness Printer took 69.85ms. Allocated memory is still 390.1MB. Free memory was 133.4MB in the beginning and 338.4MB in the end (delta: -205.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 11:43:37,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 53.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.49ms. Allocated memory is still 96.5MB. Free memory was 63.0MB in the beginning and 57.6MB in the end (delta: 5.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.98ms. Allocated memory is still 96.5MB. Free memory was 57.6MB in the beginning and 51.1MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.80ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 51.1MB in the beginning and 91.4MB in the end (delta: -40.3MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * RCFGBuilder took 843.38ms. Allocated memory is still 119.5MB. Free memory was 91.4MB in the beginning and 85.2MB in the end (delta: 6.2MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 16075.35ms. Allocated memory was 119.5MB in the beginning and 390.1MB in the end (delta: 270.5MB). Free memory was 84.8MB in the beginning and 133.4MB in the end (delta: -48.5MB). Peak memory consumption was 223.0MB. Max. memory is 16.1GB. * Witness Printer took 69.85ms. Allocated memory is still 390.1MB. Free memory was 133.4MB in the beginning and 338.4MB in the end (delta: -205.1MB). 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, 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=0, 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=-6, 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=-6, 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=-6, 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=-6, 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=-6, 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=-6, 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=-6, 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=-6, 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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=-2, tmp_ndt_2=-3, tmp_ndt_3=-4, 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: 15.9s, OverallIterations: 53, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12116 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11860 mSDsluCounter, 73907 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53890 mSDsCounter, 2133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17910 IncrementalHoareTripleChecker+Invalid, 20043 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2133 mSolverCounterUnsat, 20017 mSDtfsCounter, 17910 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 559 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=734occurred in iteration=20, InterpolantAutomatonStates: 369, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 52 MinimizatonAttempts, 1307 StatesRemovedByMinimization, 50 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2270 NumberOfCodeBlocks, 2270 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 2145 ConstructedInterpolants, 0 QuantifiedInterpolants, 5042 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 52 InterpolantComputations, 52 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! [2021-12-14 11:43:37,587 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