/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:50:01,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:50:01,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:50:01,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:50:01,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:50:01,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:50:01,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:50:01,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:50:01,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:50:01,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:50:01,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:50:01,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:50:01,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:50:01,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:50:01,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:50:01,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:50:01,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:50:01,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:50:01,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:50:01,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:50:01,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:50:01,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:50:01,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:50:01,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:50:01,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:50:01,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:50:01,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:50:01,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:50:01,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:50:01,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:50:01,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:50:01,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:50:01,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:50:01,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:50:01,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:50:01,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:50:01,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:50:01,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:50:01,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:50:01,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:50:01,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:50:01,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 14:50:01,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:50:01,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:50:01,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:50:01,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:50:01,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:50:01,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:50:01,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:50:01,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:50:01,306 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:50:01,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:50:01,306 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:50:01,307 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:50:01,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:50:01,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:50:01,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:50:01,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:50:01,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:50:01,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:50:01,309 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:50:01,309 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:50:01,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:50:01,309 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:50:01,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:50:01,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:50:01,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:50:01,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:50:01,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:50:01,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:50:01,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:50:01,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:50:01,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:50:01,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:50:01,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:50:01,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:50:01,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:50:01,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:50:01,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:50:01,703 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:50:01,704 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:50:01,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2022-10-16 14:50:01,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bbbaf0a/3518c37a561947bf81d54027d4da755a/FLAGa8e5761b3 [2022-10-16 14:50:02,709 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:50:02,711 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2022-10-16 14:50:02,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bbbaf0a/3518c37a561947bf81d54027d4da755a/FLAGa8e5761b3 [2022-10-16 14:50:03,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3bbbaf0a/3518c37a561947bf81d54027d4da755a [2022-10-16 14:50:03,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:50:03,232 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:50:03,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:50:03,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:50:03,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:50:03,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:03" (1/1) ... [2022-10-16 14:50:03,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c2b6c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:03, skipping insertion in model container [2022-10-16 14:50:03,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:03" (1/1) ... [2022-10-16 14:50:03,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:50:03,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:50:04,082 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/floppy.i.cil-1.c[76734,76747] [2022-10-16 14:50:04,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:50:04,711 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:50:04,793 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/floppy.i.cil-1.c[76734,76747] [2022-10-16 14:50:05,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:50:05,318 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:50:05,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05 WrapperNode [2022-10-16 14:50:05,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:50:05,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:50:05,324 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:50:05,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:50:05,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:05,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:05,667 INFO L138 Inliner]: procedures = 126, calls = 2874, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 3097 [2022-10-16 14:50:05,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:50:05,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:50:05,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:50:05,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:50:05,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:05,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:05,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:05,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:05,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:05,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:05,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:05,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:06,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:50:06,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:50:06,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:50:06,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:50:06,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (1/1) ... [2022-10-16 14:50:06,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:50:06,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:06,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 14:50:06,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 14:50:06,124 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-10-16 14:50:06,124 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-10-16 14:50:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 14:50:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-16 14:50:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-16 14:50:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 14:50:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-10-16 14:50:06,125 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-10-16 14:50:06,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-16 14:50:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-16 14:50:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-10-16 14:50:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-10-16 14:50:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2022-10-16 14:50:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2022-10-16 14:50:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 14:50:06,126 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2022-10-16 14:50:06,126 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2022-10-16 14:50:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-10-16 14:50:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-10-16 14:50:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2022-10-16 14:50:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2022-10-16 14:50:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-16 14:50:06,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-16 14:50:06,127 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-10-16 14:50:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-10-16 14:50:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2022-10-16 14:50:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2022-10-16 14:50:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2022-10-16 14:50:06,128 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2022-10-16 14:50:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 14:50:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:50:06,128 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2022-10-16 14:50:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2022-10-16 14:50:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2022-10-16 14:50:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2022-10-16 14:50:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 14:50:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 14:50:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-10-16 14:50:06,129 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-10-16 14:50:06,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 14:50:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2022-10-16 14:50:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2022-10-16 14:50:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 14:50:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2022-10-16 14:50:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2022-10-16 14:50:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:50:06,130 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2022-10-16 14:50:06,130 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2022-10-16 14:50:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-16 14:50:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-10-16 14:50:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-10-16 14:50:06,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:50:06,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:50:06,596 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:50:06,600 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:50:06,657 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:06,672 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-10-16 14:50:06,672 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-10-16 14:50:06,676 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:06,848 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-10-16 14:50:06,848 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-10-16 14:50:06,893 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:06,922 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2022-10-16 14:50:06,922 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2022-10-16 14:50:07,042 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,068 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-10-16 14:50:07,068 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-10-16 14:50:07,072 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,073 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,074 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,242 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-10-16 14:50:07,242 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2022-10-16 14:50:07,242 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2022-10-16 14:50:07,242 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-10-16 14:50:07,242 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-10-16 14:50:07,243 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-10-16 14:50:07,245 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,254 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,255 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,769 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2022-10-16 14:50:07,769 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2022-10-16 14:50:07,769 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-10-16 14:50:07,769 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-10-16 14:50:07,769 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2022-10-16 14:50:07,770 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2022-10-16 14:50:07,796 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,830 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-10-16 14:50:07,830 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-10-16 14:50:07,837 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,838 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,840 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,842 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,843 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,847 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,848 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:07,850 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:11,970 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2022-10-16 14:50:11,970 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2022-10-16 14:50:11,970 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2022-10-16 14:50:11,971 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2022-10-16 14:50:11,971 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2022-10-16 14:50:11,971 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2022-10-16 14:50:11,971 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2022-10-16 14:50:11,972 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2022-10-16 14:50:11,972 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2022-10-16 14:50:11,972 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2022-10-16 14:50:11,972 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-10-16 14:50:11,972 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-10-16 14:50:11,972 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2022-10-16 14:50:11,973 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2022-10-16 14:50:11,973 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2022-10-16 14:50:11,973 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2022-10-16 14:50:12,006 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:50:12,029 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:50:12,029 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-16 14:50:12,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:12 BoogieIcfgContainer [2022-10-16 14:50:12,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:50:12,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:50:12,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:50:12,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:50:12,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:50:03" (1/3) ... [2022-10-16 14:50:12,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e66f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:12, skipping insertion in model container [2022-10-16 14:50:12,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:05" (2/3) ... [2022-10-16 14:50:12,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e66f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:12, skipping insertion in model container [2022-10-16 14:50:12,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:12" (3/3) ... [2022-10-16 14:50:12,056 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2022-10-16 14:50:12,081 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:50:12,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2022-10-16 14:50:12,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:50:12,229 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31c62f40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:50:12,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2022-10-16 14:50:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand has 670 states, 506 states have (on average 1.5533596837944663) internal successors, (786), 592 states have internal predecessors, (786), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2022-10-16 14:50:12,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 14:50:12,260 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:12,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:12,262 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting FloppyDeviceControlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [FlQueueIrpToThreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2022-10-16 14:50:12,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:12,271 INFO L85 PathProgramCache]: Analyzing trace with hash -997736979, now seen corresponding path program 1 times [2022-10-16 14:50:12,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:12,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80509863] [2022-10-16 14:50:12,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:12,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:13,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:50:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:13,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 14:50:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:13,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:13,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80509863] [2022-10-16 14:50:13,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80509863] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:50:13,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:50:13,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 14:50:13,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653447125] [2022-10-16 14:50:13,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:50:13,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:50:13,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:13,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:50:13,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:50:13,507 INFO L87 Difference]: Start difference. First operand has 670 states, 506 states have (on average 1.5533596837944663) internal successors, (786), 592 states have internal predecessors, (786), 90 states have call successors, (90), 19 states have call predecessors, (90), 19 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:50:17,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 14:50:18,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:18,303 INFO L93 Difference]: Finished difference Result 1404 states and 2132 transitions. [2022-10-16 14:50:18,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 14:50:18,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 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 33 [2022-10-16 14:50:18,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:18,327 INFO L225 Difference]: With dead ends: 1404 [2022-10-16 14:50:18,327 INFO L226 Difference]: Without dead ends: 613 [2022-10-16 14:50:18,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:50:18,343 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 440 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 227 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:18,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 3146 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 996 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-10-16 14:50:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-10-16 14:50:18,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 540. [2022-10-16 14:50:18,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 437 states have (on average 1.4416475972540046) internal successors, (630), 482 states have internal predecessors, (630), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-10-16 14:50:18,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 725 transitions. [2022-10-16 14:50:18,452 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 725 transitions. Word has length 33 [2022-10-16 14:50:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:18,453 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 725 transitions. [2022-10-16 14:50:18,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 14:50:18,454 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 725 transitions. [2022-10-16 14:50:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 14:50:18,456 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:18,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:18,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:50:18,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting FloppyDeviceControlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [FlQueueIrpToThreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2022-10-16 14:50:18,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash -741497641, now seen corresponding path program 1 times [2022-10-16 14:50:18,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:18,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327141939] [2022-10-16 14:50:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:18,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:50:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:19,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-16 14:50:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:19,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:19,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327141939] [2022-10-16 14:50:19,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327141939] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:50:19,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:50:19,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 14:50:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640593378] [2022-10-16 14:50:19,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:50:19,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 14:50:19,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:19,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 14:50:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-16 14:50:19,602 INFO L87 Difference]: Start difference. First operand 540 states and 725 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:50:23,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 14:50:23,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:23,830 INFO L93 Difference]: Finished difference Result 1147 states and 1561 transitions. [2022-10-16 14:50:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 14:50:23,833 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-10-16 14:50:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:23,839 INFO L225 Difference]: With dead ends: 1147 [2022-10-16 14:50:23,839 INFO L226 Difference]: Without dead ends: 608 [2022-10-16 14:50:23,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-16 14:50:23,845 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 374 mSDsluCounter, 1818 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 133 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 2472 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:23,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 2472 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 804 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-10-16 14:50:23,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-10-16 14:50:23,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 541. [2022-10-16 14:50:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 438 states have (on average 1.4406392694063928) internal successors, (631), 483 states have internal predecessors, (631), 49 states have call successors, (49), 16 states have call predecessors, (49), 16 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-10-16 14:50:23,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 726 transitions. [2022-10-16 14:50:23,891 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 726 transitions. Word has length 37 [2022-10-16 14:50:23,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:23,891 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 726 transitions. [2022-10-16 14:50:23,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 14:50:23,892 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 726 transitions. [2022-10-16 14:50:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 14:50:23,894 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:23,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:23,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:50:23,894 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting FloppyDeviceControlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [FlQueueIrpToThreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2022-10-16 14:50:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1747279579, now seen corresponding path program 1 times [2022-10-16 14:50:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:23,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838409672] [2022-10-16 14:50:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:24,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:50:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-10-16 14:50:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:24,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:24,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838409672] [2022-10-16 14:50:24,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838409672] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:50:24,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519541628] [2022-10-16 14:50:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:24,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:24,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:24,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:50:24,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 14:50:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:25,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 2399 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 14:50:25,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:50:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:26,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:50:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:26,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519541628] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:50:26,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:50:26,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2022-10-16 14:50:26,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296864334] [2022-10-16 14:50:26,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:50:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 14:50:26,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 14:50:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-10-16 14:50:26,156 INFO L87 Difference]: Start difference. First operand 541 states and 726 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 14:50:31,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 14:50:32,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:32,125 INFO L93 Difference]: Finished difference Result 1157 states and 1575 transitions. [2022-10-16 14:50:32,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 14:50:32,126 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2022-10-16 14:50:32,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:32,132 INFO L225 Difference]: With dead ends: 1157 [2022-10-16 14:50:32,132 INFO L226 Difference]: Without dead ends: 617 [2022-10-16 14:50:32,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2022-10-16 14:50:32,137 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 383 mSDsluCounter, 3962 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 147 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 4614 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:32,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 4614 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1637 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-10-16 14:50:32,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-10-16 14:50:32,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 550. [2022-10-16 14:50:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 446 states have (on average 1.4394618834080717) internal successors, (642), 491 states have internal predecessors, (642), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-10-16 14:50:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 737 transitions. [2022-10-16 14:50:32,183 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 737 transitions. Word has length 38 [2022-10-16 14:50:32,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:32,183 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 737 transitions. [2022-10-16 14:50:32,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 10 states have internal predecessors, (44), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 14:50:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 737 transitions. [2022-10-16 14:50:32,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 14:50:32,192 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:32,192 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:32,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 14:50:32,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:32,408 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting FloppyDeviceControlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [FlQueueIrpToThreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2022-10-16 14:50:32,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:32,409 INFO L85 PathProgramCache]: Analyzing trace with hash 149816791, now seen corresponding path program 2 times [2022-10-16 14:50:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:32,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472675095] [2022-10-16 14:50:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:32,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:33,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:50:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-10-16 14:50:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:33,908 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:33,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:33,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472675095] [2022-10-16 14:50:33,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472675095] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:50:33,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125056788] [2022-10-16 14:50:33,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:50:33,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:33,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:33,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:50:33,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 14:50:38,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:50:38,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:50:38,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 14:50:38,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:50:38,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:38,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:50:39,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:39,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125056788] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:50:39,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:50:39,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2022-10-16 14:50:39,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270566029] [2022-10-16 14:50:39,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:50:39,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 14:50:39,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 14:50:39,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-10-16 14:50:39,168 INFO L87 Difference]: Start difference. First operand 550 states and 737 transitions. Second operand has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 14:50:46,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 14:50:46,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:46,872 INFO L93 Difference]: Finished difference Result 1175 states and 1600 transitions. [2022-10-16 14:50:46,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 14:50:46,873 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2022-10-16 14:50:46,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:46,878 INFO L225 Difference]: With dead ends: 1175 [2022-10-16 14:50:46,879 INFO L226 Difference]: Without dead ends: 626 [2022-10-16 14:50:46,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2022-10-16 14:50:46,885 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 434 mSDsluCounter, 3967 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 180 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:46,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 4621 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1744 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-10-16 14:50:46,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-10-16 14:50:46,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 559. [2022-10-16 14:50:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 455 states have (on average 1.4263736263736264) internal successors, (649), 500 states have internal predecessors, (649), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2022-10-16 14:50:46,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 744 transitions. [2022-10-16 14:50:46,921 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 744 transitions. Word has length 41 [2022-10-16 14:50:46,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:46,922 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 744 transitions. [2022-10-16 14:50:46,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5238095238095237) internal successors, (53), 19 states have internal predecessors, (53), 2 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 14:50:46,922 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 744 transitions. [2022-10-16 14:50:46,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-16 14:50:46,923 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:46,924 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:46,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 14:50:47,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-16 14:50:47,139 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting FloppyDeviceControlErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [FlQueueIrpToThreadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, FlQueueIrpToThreadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 51 more)] === [2022-10-16 14:50:47,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:47,140 INFO L85 PathProgramCache]: Analyzing trace with hash -421222569, now seen corresponding path program 3 times [2022-10-16 14:50:47,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:47,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904304153] [2022-10-16 14:50:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:47,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:48,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 14:50:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:49,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-16 14:50:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904304153] [2022-10-16 14:50:49,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904304153] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:50:49,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456060130] [2022-10-16 14:50:49,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:50:49,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:49,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:49,720 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:50:49,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process