/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/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 13:02:46,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 13:02:46,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 13:02:46,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 13:02:46,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 13:02:46,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 13:02:46,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 13:02:46,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 13:02:46,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 13:02:46,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 13:02:46,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 13:02:46,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 13:02:46,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 13:02:46,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 13:02:46,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 13:02:46,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 13:02:46,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 13:02:46,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 13:02:46,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 13:02:46,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 13:02:46,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 13:02:46,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 13:02:46,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 13:02:46,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 13:02:46,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 13:02:46,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 13:02:46,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 13:02:46,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 13:02:46,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 13:02:46,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 13:02:46,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 13:02:46,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 13:02:46,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 13:02:46,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 13:02:46,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 13:02:46,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 13:02:46,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 13:02:46,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 13:02:46,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 13:02:46,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 13:02:46,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 13:02:46,289 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 13:02:46,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 13:02:46,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 13:02:46,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 13:02:46,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 13:02:46,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 13:02:46,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 13:02:46,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 13:02:46,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 13:02:46,327 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 13:02:46,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 13:02:46,328 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 13:02:46,328 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 13:02:46,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 13:02:46,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 13:02:46,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 13:02:46,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 13:02:46,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 13:02:46,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 13:02:46,330 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 13:02:46,330 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 13:02:46,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 13:02:46,331 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 13:02:46,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 13:02:46,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 13:02:46,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 13:02:46,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 13:02:46,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:02:46,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 13:02:46,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 13:02:46,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 13:02:46,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 13:02:46,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 13:02:46,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 13:02:46,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 13:02:46,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 13:02:46,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 13:02:46,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 13:02:46,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 13:02:46,850 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 13:02:46,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2022-10-16 13:02:46,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97a6df37d/89729ef0c4444f63b1203c9c5afd0623/FLAG14eb351fb [2022-10-16 13:02:48,056 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 13:02:48,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2022-10-16 13:02:48,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97a6df37d/89729ef0c4444f63b1203c9c5afd0623/FLAG14eb351fb [2022-10-16 13:02:48,457 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97a6df37d/89729ef0c4444f63b1203c9c5afd0623 [2022-10-16 13:02:48,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 13:02:48,466 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 13:02:48,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 13:02:48,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 13:02:48,473 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 13:02:48,474 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:02:48" (1/1) ... [2022-10-16 13:02:48,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54bee8a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:48, skipping insertion in model container [2022-10-16 13:02:48,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:02:48" (1/1) ... [2022-10-16 13:02:48,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 13:02:48,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 13:02:49,820 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/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2022-10-16 13:02:50,240 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:02:50,271 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 13:02:50,507 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/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2022-10-16 13:02:50,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 13:02:50,869 INFO L208 MainTranslator]: Completed translation [2022-10-16 13:02:50,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50 WrapperNode [2022-10-16 13:02:50,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 13:02:50,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 13:02:50,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 13:02:50,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 13:02:50,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:50,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,098 INFO L138 Inliner]: procedures = 175, calls = 797, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 2284 [2022-10-16 13:02:51,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 13:02:51,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 13:02:51,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 13:02:51,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 13:02:51,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 13:02:51,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 13:02:51,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 13:02:51,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 13:02:51,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (1/1) ... [2022-10-16 13:02:51,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 13:02:51,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:02:51,387 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 13:02:51,395 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 13:02:51,477 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-10-16 13:02:51,477 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-10-16 13:02:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-10-16 13:02:51,478 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-10-16 13:02:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2022-10-16 13:02:51,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2022-10-16 13:02:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_15 [2022-10-16 13:02:51,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_15 [2022-10-16 13:02:51,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 13:02:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2022-10-16 13:02:51,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2022-10-16 13:02:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-16 13:02:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-16 13:02:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-10-16 13:02:51,479 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-10-16 13:02:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-10-16 13:02:51,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-10-16 13:02:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 13:02:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-10-16 13:02:51,480 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-10-16 13:02:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-10-16 13:02:51,480 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-10-16 13:02:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-10-16 13:02:51,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-10-16 13:02:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-16 13:02:51,481 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-16 13:02:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-10-16 13:02:51,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-10-16 13:02:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-16 13:02:51,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-16 13:02:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-10-16 13:02:51,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-10-16 13:02:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2022-10-16 13:02:51,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2022-10-16 13:02:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-10-16 13:02:51,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-10-16 13:02:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-10-16 13:02:51,483 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-10-16 13:02:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 13:02:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-16 13:02:51,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-16 13:02:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-16 13:02:51,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-16 13:02:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-16 13:02:51,484 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-16 13:02:51,484 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 13:02:51,484 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 13:02:51,484 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-10-16 13:02:51,484 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-10-16 13:02:51,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 13:02:51,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-10-16 13:02:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-10-16 13:02:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-10-16 13:02:51,486 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-10-16 13:02:51,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 13:02:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-10-16 13:02:51,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-10-16 13:02:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 13:02:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 13:02:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-10-16 13:02:51,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-10-16 13:02:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-10-16 13:02:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-10-16 13:02:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-10-16 13:02:51,490 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-10-16 13:02:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 13:02:51,490 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-10-16 13:02:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-10-16 13:02:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-10-16 13:02:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-10-16 13:02:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-10-16 13:02:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-10-16 13:02:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-10-16 13:02:51,493 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-10-16 13:02:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 13:02:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-16 13:02:51,494 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_disconnect [2022-10-16 13:02:51,494 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_disconnect [2022-10-16 13:02:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-10-16 13:02:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-10-16 13:02:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-10-16 13:02:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-10-16 13:02:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-10-16 13:02:51,495 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-10-16 13:02:51,495 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-10-16 13:02:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-10-16 13:02:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-10-16 13:02:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-10-16 13:02:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-10-16 13:02:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-10-16 13:02:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 13:02:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-10-16 13:02:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-10-16 13:02:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-10-16 13:02:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-10-16 13:02:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-16 13:02:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_send_cmd [2022-10-16 13:02:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_send_cmd [2022-10-16 13:02:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-10-16 13:02:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-10-16 13:02:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 13:02:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 13:02:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_cmd_open [2022-10-16 13:02:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_cmd_open [2022-10-16 13:02:52,229 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 13:02:52,233 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 13:02:52,527 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-10-16 13:02:53,247 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-10-16 13:02:57,207 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 13:02:57,224 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 13:02:57,224 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 13:02:57,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:02:57 BoogieIcfgContainer [2022-10-16 13:02:57,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 13:02:57,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 13:02:57,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 13:02:57,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 13:02:57,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:02:48" (1/3) ... [2022-10-16 13:02:57,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4c42fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:02:57, skipping insertion in model container [2022-10-16 13:02:57,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:50" (2/3) ... [2022-10-16 13:02:57,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4c42fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:02:57, skipping insertion in model container [2022-10-16 13:02:57,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:02:57" (3/3) ... [2022-10-16 13:02:57,239 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2022-10-16 13:02:57,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 13:02:57,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-10-16 13:02:57,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 13:02:57,361 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;@10a5b5a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 13:02:57,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-10-16 13:02:57,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 730 states, 527 states have (on average 1.3870967741935485) internal successors, (731), 573 states have internal predecessors, (731), 132 states have call successors, (132), 44 states have call predecessors, (132), 42 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2022-10-16 13:02:57,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 13:02:57,385 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:02:57,386 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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 13:02:57,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:02:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:02:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash -824732324, now seen corresponding path program 1 times [2022-10-16 13:02:57,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:02:57,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754727898] [2022-10-16 13:02:57,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:02:57,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:02:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:58,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:02:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:02:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:02:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 13:02:58,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:02:58,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754727898] [2022-10-16 13:02:58,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754727898] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:02:58,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:02:58,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 13:02:58,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270614005] [2022-10-16 13:02:58,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:02:58,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:02:58,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:02:58,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:02:58,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:02:58,236 INFO L87 Difference]: Start difference. First operand has 730 states, 527 states have (on average 1.3870967741935485) internal successors, (731), 573 states have internal predecessors, (731), 132 states have call successors, (132), 44 states have call predecessors, (132), 42 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 13:03:02,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:02,638 INFO L93 Difference]: Finished difference Result 1757 states and 2429 transitions. [2022-10-16 13:03:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:03:02,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-10-16 13:03:02,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:02,667 INFO L225 Difference]: With dead ends: 1757 [2022-10-16 13:03:02,668 INFO L226 Difference]: Without dead ends: 977 [2022-10-16 13:03:02,682 INFO L412 NwaCegarLoop]: 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 [2022-10-16 13:03:02,686 INFO L413 NwaCegarLoop]: 1020 mSDtfsCounter, 495 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:02,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 2205 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-10-16 13:03:02,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-10-16 13:03:02,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 904. [2022-10-16 13:03:02,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 670 states have (on average 1.3253731343283581) internal successors, (888), 701 states have internal predecessors, (888), 152 states have call successors, (152), 58 states have call predecessors, (152), 58 states have return successors, (152), 151 states have call predecessors, (152), 152 states have call successors, (152) [2022-10-16 13:03:02,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1192 transitions. [2022-10-16 13:03:02,840 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1192 transitions. Word has length 28 [2022-10-16 13:03:02,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:02,841 INFO L495 AbstractCegarLoop]: Abstraction has 904 states and 1192 transitions. [2022-10-16 13:03:02,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 13:03:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1192 transitions. [2022-10-16 13:03:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 13:03:02,901 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:02,902 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 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 13:03:02,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 13:03:02,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:03:02,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:02,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1682038863, now seen corresponding path program 1 times [2022-10-16 13:03:02,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:02,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734436757] [2022-10-16 13:03:02,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:02,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-16 13:03:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 13:03:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 13:03:03,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:03,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734436757] [2022-10-16 13:03:03,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734436757] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:03,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:03:03,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:03:03,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002736312] [2022-10-16 13:03:03,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:03,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:03:03,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:03,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:03:03,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:03,160 INFO L87 Difference]: Start difference. First operand 904 states and 1192 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:06,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:03:11,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:11,708 INFO L93 Difference]: Finished difference Result 2763 states and 3791 transitions. [2022-10-16 13:03:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 13:03:11,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-10-16 13:03:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:11,726 INFO L225 Difference]: With dead ends: 2763 [2022-10-16 13:03:11,727 INFO L226 Difference]: Without dead ends: 1866 [2022-10-16 13:03:11,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:03:11,733 INFO L413 NwaCegarLoop]: 1298 mSDtfsCounter, 2266 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 1755 mSolverCounterSat, 1055 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1055 IncrementalHoareTripleChecker+Valid, 1755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:11,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 2929 Invalid, 2810 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1055 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-10-16 13:03:11,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2022-10-16 13:03:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1504. [2022-10-16 13:03:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1125 states have (on average 1.3342222222222222) internal successors, (1501), 1163 states have internal predecessors, (1501), 256 states have call successors, (256), 99 states have call predecessors, (256), 99 states have return successors, (256), 254 states have call predecessors, (256), 256 states have call successors, (256) [2022-10-16 13:03:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2013 transitions. [2022-10-16 13:03:11,929 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2013 transitions. Word has length 35 [2022-10-16 13:03:11,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:11,931 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 2013 transitions. [2022-10-16 13:03:11,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:11,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2013 transitions. [2022-10-16 13:03:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 13:03:11,943 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:11,943 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:11,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 13:03:11,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:03:11,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:11,945 INFO L85 PathProgramCache]: Analyzing trace with hash -725405720, now seen corresponding path program 1 times [2022-10-16 13:03:11,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:11,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643620578] [2022-10-16 13:03:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:11,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:12,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:12,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-16 13:03:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 13:03:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:12,256 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 13:03:12,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:12,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643620578] [2022-10-16 13:03:12,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643620578] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:12,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:03:12,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:03:12,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410178323] [2022-10-16 13:03:12,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:12,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:03:12,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:12,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:03:12,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:12,259 INFO L87 Difference]: Start difference. First operand 1504 states and 2013 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 13:03:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:17,737 INFO L93 Difference]: Finished difference Result 3333 states and 4598 transitions. [2022-10-16 13:03:17,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:03:17,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2022-10-16 13:03:17,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:17,751 INFO L225 Difference]: With dead ends: 3333 [2022-10-16 13:03:17,752 INFO L226 Difference]: Without dead ends: 1845 [2022-10-16 13:03:17,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:03:17,771 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 905 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:17,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 2219 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-10-16 13:03:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2022-10-16 13:03:17,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1498. [2022-10-16 13:03:17,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1119 states have (on average 1.3342269883824844) internal successors, (1493), 1158 states have internal predecessors, (1493), 256 states have call successors, (256), 99 states have call predecessors, (256), 99 states have return successors, (256), 253 states have call predecessors, (256), 256 states have call successors, (256) [2022-10-16 13:03:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2005 transitions. [2022-10-16 13:03:17,910 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2005 transitions. Word has length 54 [2022-10-16 13:03:17,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:17,910 INFO L495 AbstractCegarLoop]: Abstraction has 1498 states and 2005 transitions. [2022-10-16 13:03:17,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 13:03:17,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2005 transitions. [2022-10-16 13:03:17,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-10-16 13:03:17,914 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:17,915 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:17,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 13:03:17,916 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:03:17,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:17,927 INFO L85 PathProgramCache]: Analyzing trace with hash 668459002, now seen corresponding path program 1 times [2022-10-16 13:03:17,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:17,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837799275] [2022-10-16 13:03:17,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:17,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:18,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:18,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:18,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:18,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:03:18,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:18,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837799275] [2022-10-16 13:03:18,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837799275] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:18,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:03:18,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 13:03:18,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38969027] [2022-10-16 13:03:18,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:18,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:03:18,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:18,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:03:18,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:03:18,274 INFO L87 Difference]: Start difference. First operand 1498 states and 2005 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:21,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:03:24,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:24,346 INFO L93 Difference]: Finished difference Result 3129 states and 4287 transitions. [2022-10-16 13:03:24,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:03:24,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2022-10-16 13:03:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:24,370 INFO L225 Difference]: With dead ends: 3129 [2022-10-16 13:03:24,371 INFO L226 Difference]: Without dead ends: 3125 [2022-10-16 13:03:24,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:03:24,375 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 1170 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 317 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:24,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2232 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [317 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-10-16 13:03:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2022-10-16 13:03:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 2870. [2022-10-16 13:03:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2160 states have (on average 1.3305555555555555) internal successors, (2874), 2213 states have internal predecessors, (2874), 495 states have call successors, (495), 191 states have call predecessors, (495), 191 states have return successors, (495), 490 states have call predecessors, (495), 495 states have call successors, (495) [2022-10-16 13:03:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3864 transitions. [2022-10-16 13:03:24,570 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3864 transitions. Word has length 54 [2022-10-16 13:03:24,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:24,573 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 3864 transitions. [2022-10-16 13:03:24,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3864 transitions. [2022-10-16 13:03:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-16 13:03:24,575 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:24,575 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:24,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 13:03:24,575 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:03:24,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:24,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1855949060, now seen corresponding path program 1 times [2022-10-16 13:03:24,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:24,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714440797] [2022-10-16 13:03:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:24,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:24,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:03:25,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:25,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714440797] [2022-10-16 13:03:25,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714440797] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:25,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:03:25,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 13:03:25,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872320836] [2022-10-16 13:03:25,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:25,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:03:25,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:25,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:03:25,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 13:03:25,013 INFO L87 Difference]: Start difference. First operand 2870 states and 3864 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:29,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:29,528 INFO L93 Difference]: Finished difference Result 4684 states and 6430 transitions. [2022-10-16 13:03:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:03:29,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2022-10-16 13:03:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:29,570 INFO L225 Difference]: With dead ends: 4684 [2022-10-16 13:03:29,570 INFO L226 Difference]: Without dead ends: 4676 [2022-10-16 13:03:29,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:03:29,574 INFO L413 NwaCegarLoop]: 1095 mSDtfsCounter, 1164 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:29,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 2233 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-10-16 13:03:29,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2022-10-16 13:03:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4326. [2022-10-16 13:03:29,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 3266 states have (on average 1.3254745866503368) internal successors, (4329), 3335 states have internal predecessors, (4329), 748 states have call successors, (748), 288 states have call predecessors, (748), 288 states have return successors, (748), 740 states have call predecessors, (748), 748 states have call successors, (748) [2022-10-16 13:03:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 5825 transitions. [2022-10-16 13:03:29,892 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 5825 transitions. Word has length 56 [2022-10-16 13:03:29,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:29,893 INFO L495 AbstractCegarLoop]: Abstraction has 4326 states and 5825 transitions. [2022-10-16 13:03:29,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 5825 transitions. [2022-10-16 13:03:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-10-16 13:03:29,896 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:29,896 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:29,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-16 13:03:29,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:03:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:29,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1498023058, now seen corresponding path program 1 times [2022-10-16 13:03:29,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:29,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552302219] [2022-10-16 13:03:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:29,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:30,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-10-16 13:03:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:30,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-10-16 13:03:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:03:30,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:30,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552302219] [2022-10-16 13:03:30,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552302219] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:30,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:03:30,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:03:30,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555980109] [2022-10-16 13:03:30,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:30,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:03:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:30,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:03:30,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:03:30,198 INFO L87 Difference]: Start difference. First operand 4326 states and 5825 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 13:03:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:38,830 INFO L93 Difference]: Finished difference Result 8491 states and 11619 transitions. [2022-10-16 13:03:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 13:03:38,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 68 [2022-10-16 13:03:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:38,863 INFO L225 Difference]: With dead ends: 8491 [2022-10-16 13:03:38,864 INFO L226 Difference]: Without dead ends: 4183 [2022-10-16 13:03:38,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:03:38,889 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 747 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:38,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 2720 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-10-16 13:03:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2022-10-16 13:03:39,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 3603. [2022-10-16 13:03:39,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3603 states, 2758 states have (on average 1.3259608411892676) internal successors, (3657), 2815 states have internal predecessors, (3657), 581 states have call successors, (581), 240 states have call predecessors, (581), 240 states have return successors, (581), 574 states have call predecessors, (581), 581 states have call successors, (581) [2022-10-16 13:03:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3603 states to 3603 states and 4819 transitions. [2022-10-16 13:03:39,196 INFO L78 Accepts]: Start accepts. Automaton has 3603 states and 4819 transitions. Word has length 68 [2022-10-16 13:03:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:39,197 INFO L495 AbstractCegarLoop]: Abstraction has 3603 states and 4819 transitions. [2022-10-16 13:03:39,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 13:03:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 3603 states and 4819 transitions. [2022-10-16 13:03:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 13:03:39,200 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:39,200 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:39,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-16 13:03:39,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:03:39,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash -191012186, now seen corresponding path program 1 times [2022-10-16 13:03:39,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:39,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804414548] [2022-10-16 13:03:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:39,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:39,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:39,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:39,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-10-16 13:03:39,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804414548] [2022-10-16 13:03:39,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804414548] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071312925] [2022-10-16 13:03:39,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:39,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:39,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:39,760 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 13:03:39,783 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 13:03:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:40,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 13:03:40,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:03:40,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:03:40,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071312925] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:40,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:03:40,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-10-16 13:03:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106751616] [2022-10-16 13:03:40,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:40,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 13:03:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:40,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 13:03:40,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:40,290 INFO L87 Difference]: Start difference. First operand 3603 states and 4819 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 13:03:40,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:40,858 INFO L93 Difference]: Finished difference Result 6533 states and 8758 transitions. [2022-10-16 13:03:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 13:03:40,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2022-10-16 13:03:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:40,881 INFO L225 Difference]: With dead ends: 6533 [2022-10-16 13:03:40,881 INFO L226 Difference]: Without dead ends: 3238 [2022-10-16 13:03:40,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:40,895 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 878 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:40,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1426 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 13:03:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2022-10-16 13:03:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3223. [2022-10-16 13:03:41,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 2460 states have (on average 1.325609756097561) internal successors, (3261), 2515 states have internal predecessors, (3261), 529 states have call successors, (529), 210 states have call predecessors, (529), 210 states have return successors, (529), 523 states have call predecessors, (529), 529 states have call successors, (529) [2022-10-16 13:03:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 4319 transitions. [2022-10-16 13:03:41,133 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 4319 transitions. Word has length 70 [2022-10-16 13:03:41,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:41,134 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 4319 transitions. [2022-10-16 13:03:41,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-16 13:03:41,134 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 4319 transitions. [2022-10-16 13:03:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-10-16 13:03:41,136 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:41,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:41,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 13:03:41,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:41,351 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:03:41,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:41,352 INFO L85 PathProgramCache]: Analyzing trace with hash -168107905, now seen corresponding path program 1 times [2022-10-16 13:03:41,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:41,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690422323] [2022-10-16 13:03:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:41,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:41,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:41,690 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:03:41,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:41,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690422323] [2022-10-16 13:03:41,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690422323] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:41,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867342417] [2022-10-16 13:03:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:41,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:41,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:41,693 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 13:03:41,699 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 13:03:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:42,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:03:42,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 13:03:42,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:03:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:03:42,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867342417] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:03:42,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:03:42,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-16 13:03:42,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550402121] [2022-10-16 13:03:42,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:03:42,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:03:42,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:42,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:03:42,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:03:42,331 INFO L87 Difference]: Start difference. First operand 3223 states and 4319 transitions. Second operand has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 13:03:47,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:03:49,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:49,023 INFO L93 Difference]: Finished difference Result 3481 states and 4732 transitions. [2022-10-16 13:03:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 13:03:49,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 70 [2022-10-16 13:03:49,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:49,045 INFO L225 Difference]: With dead ends: 3481 [2022-10-16 13:03:49,045 INFO L226 Difference]: Without dead ends: 3479 [2022-10-16 13:03:49,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:03:49,048 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 2923 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 893 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3112 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 893 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:49,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3112 Valid, 3470 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [893 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-10-16 13:03:49,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3479 states. [2022-10-16 13:03:49,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3479 to 3221. [2022-10-16 13:03:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 2460 states have (on average 1.3239837398373984) internal successors, (3257), 2513 states have internal predecessors, (3257), 529 states have call successors, (529), 210 states have call predecessors, (529), 210 states have return successors, (529), 523 states have call predecessors, (529), 529 states have call successors, (529) [2022-10-16 13:03:49,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 4315 transitions. [2022-10-16 13:03:49,273 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 4315 transitions. Word has length 70 [2022-10-16 13:03:49,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:49,273 INFO L495 AbstractCegarLoop]: Abstraction has 3221 states and 4315 transitions. [2022-10-16 13:03:49,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.857142857142858) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 13:03:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 4315 transitions. [2022-10-16 13:03:49,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-16 13:03:49,276 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:49,276 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:49,322 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 13:03:49,490 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,SelfDestructingSolverStorable7 [2022-10-16 13:03:49,490 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:03:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:49,492 INFO L85 PathProgramCache]: Analyzing trace with hash -916376347, now seen corresponding path program 1 times [2022-10-16 13:03:49,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:49,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056034947] [2022-10-16 13:03:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:49,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:49,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:49,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:49,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:49,872 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:03:49,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:49,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056034947] [2022-10-16 13:03:49,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056034947] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:49,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90313808] [2022-10-16 13:03:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:49,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:49,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:49,875 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 13:03:49,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 13:03:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:50,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:03:50,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-16 13:03:50,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:03:50,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90313808] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:03:50,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:03:50,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-16 13:03:50,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739548309] [2022-10-16 13:03:50,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:03:50,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:03:50,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:50,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:03:50,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:50,381 INFO L87 Difference]: Start difference. First operand 3221 states and 4315 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:51,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:03:51,156 INFO L93 Difference]: Finished difference Result 4939 states and 6597 transitions. [2022-10-16 13:03:51,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:03:51,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 71 [2022-10-16 13:03:51,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:03:51,169 INFO L225 Difference]: With dead ends: 4939 [2022-10-16 13:03:51,170 INFO L226 Difference]: Without dead ends: 2026 [2022-10-16 13:03:51,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:03:51,179 INFO L413 NwaCegarLoop]: 1106 mSDtfsCounter, 1135 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-16 13:03:51,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1339 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-16 13:03:51,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-10-16 13:03:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1985. [2022-10-16 13:03:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1523 states have (on average 1.3158240315167433) internal successors, (2004), 1560 states have internal predecessors, (2004), 310 states have call successors, (310), 132 states have call predecessors, (310), 132 states have return successors, (310), 306 states have call predecessors, (310), 310 states have call successors, (310) [2022-10-16 13:03:51,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2624 transitions. [2022-10-16 13:03:51,319 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2624 transitions. Word has length 71 [2022-10-16 13:03:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:03:51,320 INFO L495 AbstractCegarLoop]: Abstraction has 1985 states and 2624 transitions. [2022-10-16 13:03:51,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:03:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2624 transitions. [2022-10-16 13:03:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-10-16 13:03:51,323 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:03:51,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:03:51,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 13:03:51,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:51,537 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:03:51,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:03:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1657105729, now seen corresponding path program 1 times [2022-10-16 13:03:51,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:03:51,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794804790] [2022-10-16 13:03:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:51,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:03:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:03:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:51,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:03:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:51,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:03:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:51,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:03:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:03:51,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:03:51,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794804790] [2022-10-16 13:03:51,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794804790] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:03:51,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637974712] [2022-10-16 13:03:51,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:03:51,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:03:51,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:03:51,823 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:03:51,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 13:03:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:03:52,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:03:52,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:03:52,377 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 13:03:52,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 13:03:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:03:52,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637974712] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 13:03:52,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 13:03:52,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-16 13:03:52,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511558123] [2022-10-16 13:03:52,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 13:03:52,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:03:52,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:03:52,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:03:52,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:03:52,496 INFO L87 Difference]: Start difference. First operand 1985 states and 2624 transitions. Second operand has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 13:03:54,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:04:00,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:00,835 INFO L93 Difference]: Finished difference Result 6163 states and 8334 transitions. [2022-10-16 13:04:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 13:04:00,836 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 72 [2022-10-16 13:04:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:00,887 INFO L225 Difference]: With dead ends: 6163 [2022-10-16 13:04:00,887 INFO L226 Difference]: Without dead ends: 6159 [2022-10-16 13:04:00,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-10-16 13:04:00,891 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 3629 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 2660 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 4026 SdHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 2660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:00,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3929 Valid, 4026 Invalid, 3490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 2660 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-10-16 13:04:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6159 states. [2022-10-16 13:04:01,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6159 to 4071. [2022-10-16 13:04:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4071 states, 3144 states have (on average 1.3126590330788803) internal successors, (4127), 3197 states have internal predecessors, (4127), 636 states have call successors, (636), 273 states have call predecessors, (636), 273 states have return successors, (636), 628 states have call predecessors, (636), 636 states have call successors, (636) [2022-10-16 13:04:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 5399 transitions. [2022-10-16 13:04:01,307 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 5399 transitions. Word has length 72 [2022-10-16 13:04:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:01,308 INFO L495 AbstractCegarLoop]: Abstraction has 4071 states and 5399 transitions. [2022-10-16 13:04:01,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-10-16 13:04:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 5399 transitions. [2022-10-16 13:04:01,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 13:04:01,312 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:01,312 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:01,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 13:04:01,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:01,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:04:01,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:01,529 INFO L85 PathProgramCache]: Analyzing trace with hash -169328537, now seen corresponding path program 1 times [2022-10-16 13:04:01,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:01,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557246639] [2022-10-16 13:04:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:01,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:01,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:01,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:01,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:01,787 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:04:01,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:01,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557246639] [2022-10-16 13:04:01,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557246639] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:04:01,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383234896] [2022-10-16 13:04:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:01,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:01,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:04:01,789 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:04:01,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 13:04:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:02,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:04:02,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:04:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-16 13:04:02,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:04:02,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383234896] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:02,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:04:02,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-10-16 13:04:02,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932518462] [2022-10-16 13:04:02,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:02,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:04:02,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:02,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:04:02,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:04:02,320 INFO L87 Difference]: Start difference. First operand 4071 states and 5399 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:04:03,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:03,177 INFO L93 Difference]: Finished difference Result 8280 states and 10982 transitions. [2022-10-16 13:04:03,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:04:03,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 73 [2022-10-16 13:04:03,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:03,214 INFO L225 Difference]: With dead ends: 8280 [2022-10-16 13:04:03,214 INFO L226 Difference]: Without dead ends: 8276 [2022-10-16 13:04:03,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:04:03,220 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 1149 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:03,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 3066 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 13:04:03,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8276 states. [2022-10-16 13:04:03,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8276 to 7984. [2022-10-16 13:04:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7984 states, 6172 states have (on average 1.3117303953337653) internal successors, (8096), 6258 states have internal predecessors, (8096), 1256 states have call successors, (1256), 538 states have call predecessors, (1256), 538 states have return successors, (1256), 1242 states have call predecessors, (1256), 1256 states have call successors, (1256) [2022-10-16 13:04:03,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7984 states to 7984 states and 10608 transitions. [2022-10-16 13:04:03,994 INFO L78 Accepts]: Start accepts. Automaton has 7984 states and 10608 transitions. Word has length 73 [2022-10-16 13:04:03,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:03,994 INFO L495 AbstractCegarLoop]: Abstraction has 7984 states and 10608 transitions. [2022-10-16 13:04:03,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 13:04:03,995 INFO L276 IsEmpty]: Start isEmpty. Operand 7984 states and 10608 transitions. [2022-10-16 13:04:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-16 13:04:03,999 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:03,999 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:04,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 13:04:04,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 13:04:04,215 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:04:04,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:04,216 INFO L85 PathProgramCache]: Analyzing trace with hash 87209080, now seen corresponding path program 1 times [2022-10-16 13:04:04,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:04,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12638897] [2022-10-16 13:04:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:04,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:04,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:04,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-10-16 13:04:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-10-16 13:04:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-16 13:04:04,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:04,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12638897] [2022-10-16 13:04:04,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12638897] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:04,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:04:04,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:04:04,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072789324] [2022-10-16 13:04:04,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:04,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:04:04,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:04,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:04:04,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:04:04,496 INFO L87 Difference]: Start difference. First operand 7984 states and 10608 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 13:04:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:13,351 INFO L93 Difference]: Finished difference Result 15914 states and 21663 transitions. [2022-10-16 13:04:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 13:04:13,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 78 [2022-10-16 13:04:13,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:13,387 INFO L225 Difference]: With dead ends: 15914 [2022-10-16 13:04:13,387 INFO L226 Difference]: Without dead ends: 7976 [2022-10-16 13:04:13,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:04:13,410 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 1669 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 1916 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1794 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 1916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:13,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1794 Valid, 3150 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 1916 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-10-16 13:04:13,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7976 states. [2022-10-16 13:04:13,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7976 to 6324. [2022-10-16 13:04:13,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6324 states, 4904 states have (on average 1.3162724306688418) internal successors, (6455), 4978 states have internal predecessors, (6455), 980 states have call successors, (980), 422 states have call predecessors, (980), 422 states have return successors, (980), 969 states have call predecessors, (980), 980 states have call successors, (980) [2022-10-16 13:04:13,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 8415 transitions. [2022-10-16 13:04:13,975 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 8415 transitions. Word has length 78 [2022-10-16 13:04:13,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:13,976 INFO L495 AbstractCegarLoop]: Abstraction has 6324 states and 8415 transitions. [2022-10-16 13:04:13,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-10-16 13:04:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 8415 transitions. [2022-10-16 13:04:13,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-16 13:04:13,978 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:13,978 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:13,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-16 13:04:13,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:04:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1263572418, now seen corresponding path program 1 times [2022-10-16 13:04:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:13,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578529465] [2022-10-16 13:04:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:13,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:14,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:14,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:14,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:14,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-10-16 13:04:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-10-16 13:04:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:14,490 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-10-16 13:04:14,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:14,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578529465] [2022-10-16 13:04:14,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578529465] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:14,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:04:14,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:04:14,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883535708] [2022-10-16 13:04:14,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:14,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:04:14,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:14,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:04:14,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:04:14,493 INFO L87 Difference]: Start difference. First operand 6324 states and 8415 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 13:04:17,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:04:27,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:27,049 INFO L93 Difference]: Finished difference Result 18733 states and 25566 transitions. [2022-10-16 13:04:27,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:04:27,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 84 [2022-10-16 13:04:27,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:27,116 INFO L225 Difference]: With dead ends: 18733 [2022-10-16 13:04:27,116 INFO L226 Difference]: Without dead ends: 12455 [2022-10-16 13:04:27,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 13:04:27,138 INFO L413 NwaCegarLoop]: 1072 mSDtfsCounter, 1926 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:27,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 3209 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-10-16 13:04:27,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12455 states. [2022-10-16 13:04:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12455 to 9020. [2022-10-16 13:04:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9020 states, 6994 states have (on average 1.3199885616242493) internal successors, (9232), 7103 states have internal predecessors, (9232), 1324 states have call successors, (1324), 684 states have call predecessors, (1324), 684 states have return successors, (1324), 1306 states have call predecessors, (1324), 1324 states have call successors, (1324) [2022-10-16 13:04:28,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 11880 transitions. [2022-10-16 13:04:28,146 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 11880 transitions. Word has length 84 [2022-10-16 13:04:28,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:28,147 INFO L495 AbstractCegarLoop]: Abstraction has 9020 states and 11880 transitions. [2022-10-16 13:04:28,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 13:04:28,147 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 11880 transitions. [2022-10-16 13:04:28,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-16 13:04:28,150 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:28,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:28,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-16 13:04:28,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:04:28,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:28,152 INFO L85 PathProgramCache]: Analyzing trace with hash 396800491, now seen corresponding path program 1 times [2022-10-16 13:04:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:28,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856861141] [2022-10-16 13:04:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:28,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:04:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 13:04:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:04:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 13:04:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 13:04:28,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:04:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 13:04:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:28,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856861141] [2022-10-16 13:04:28,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856861141] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:28,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:04:28,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:04:28,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433464588] [2022-10-16 13:04:28,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:28,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:04:28,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:28,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:04:28,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:04:28,544 INFO L87 Difference]: Start difference. First operand 9020 states and 11880 transitions. Second operand has 7 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:31,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:04:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:36,718 INFO L93 Difference]: Finished difference Result 20161 states and 27287 transitions. [2022-10-16 13:04:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 13:04:36,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 96 [2022-10-16 13:04:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:36,768 INFO L225 Difference]: With dead ends: 20161 [2022-10-16 13:04:36,768 INFO L226 Difference]: Without dead ends: 11187 [2022-10-16 13:04:36,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:04:36,798 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 667 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:36,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2450 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-10-16 13:04:36,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11187 states. [2022-10-16 13:04:37,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11187 to 9076. [2022-10-16 13:04:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9076 states, 7050 states have (on average 1.3174468085106383) internal successors, (9288), 7159 states have internal predecessors, (9288), 1324 states have call successors, (1324), 684 states have call predecessors, (1324), 684 states have return successors, (1324), 1306 states have call predecessors, (1324), 1324 states have call successors, (1324) [2022-10-16 13:04:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9076 states to 9076 states and 11936 transitions. [2022-10-16 13:04:37,668 INFO L78 Accepts]: Start accepts. Automaton has 9076 states and 11936 transitions. Word has length 96 [2022-10-16 13:04:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:37,668 INFO L495 AbstractCegarLoop]: Abstraction has 9076 states and 11936 transitions. [2022-10-16 13:04:37,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9076 states and 11936 transitions. [2022-10-16 13:04:37,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-16 13:04:37,673 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:37,673 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:37,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-16 13:04:37,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:04:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1587918415, now seen corresponding path program 1 times [2022-10-16 13:04:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:37,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740942613] [2022-10-16 13:04:37,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:37,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:04:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 13:04:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:04:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 13:04:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 13:04:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:04:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:37,992 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 13:04:37,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:37,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740942613] [2022-10-16 13:04:37,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740942613] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:37,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:04:37,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:04:37,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124537689] [2022-10-16 13:04:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:37,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:04:37,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:37,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:04:37,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:04:37,994 INFO L87 Difference]: Start difference. First operand 9076 states and 11936 transitions. Second operand has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:46,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:04:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:47,834 INFO L93 Difference]: Finished difference Result 11187 states and 15421 transitions. [2022-10-16 13:04:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 13:04:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 100 [2022-10-16 13:04:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:47,882 INFO L225 Difference]: With dead ends: 11187 [2022-10-16 13:04:47,883 INFO L226 Difference]: Without dead ends: 11186 [2022-10-16 13:04:47,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:04:47,890 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 316 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:47,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 2881 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-10-16 13:04:47,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11186 states. [2022-10-16 13:04:48,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11186 to 9075. [2022-10-16 13:04:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9075 states, 7050 states have (on average 1.3154609929078014) internal successors, (9274), 7158 states have internal predecessors, (9274), 1324 states have call successors, (1324), 684 states have call predecessors, (1324), 684 states have return successors, (1324), 1306 states have call predecessors, (1324), 1324 states have call successors, (1324) [2022-10-16 13:04:48,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 11922 transitions. [2022-10-16 13:04:48,907 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 11922 transitions. Word has length 100 [2022-10-16 13:04:48,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:48,907 INFO L495 AbstractCegarLoop]: Abstraction has 9075 states and 11922 transitions. [2022-10-16 13:04:48,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 11922 transitions. [2022-10-16 13:04:48,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-16 13:04:48,912 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:48,912 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:48,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-16 13:04:48,913 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:04:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:48,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1980829782, now seen corresponding path program 1 times [2022-10-16 13:04:48,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:48,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932321429] [2022-10-16 13:04:48,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:48,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:04:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 13:04:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-10-16 13:04:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 13:04:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-10-16 13:04:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-10-16 13:04:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,273 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 13:04:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:49,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932321429] [2022-10-16 13:04:49,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932321429] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:04:49,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68712616] [2022-10-16 13:04:49,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:49,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:04:49,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:04:49,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:04:49,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 13:04:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:49,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 13:04:49,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:04:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 13:04:49,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:04:49,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68712616] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:49,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:04:49,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-10-16 13:04:49,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531257625] [2022-10-16 13:04:49,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:49,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:04:49,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:49,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:04:49,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:04:49,838 INFO L87 Difference]: Start difference. First operand 9075 states and 11922 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:50,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:04:50,658 INFO L93 Difference]: Finished difference Result 11417 states and 15412 transitions. [2022-10-16 13:04:50,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 13:04:50,659 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 101 [2022-10-16 13:04:50,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:04:50,709 INFO L225 Difference]: With dead ends: 11417 [2022-10-16 13:04:50,711 INFO L226 Difference]: Without dead ends: 11416 [2022-10-16 13:04:50,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:04:50,719 INFO L413 NwaCegarLoop]: 1245 mSDtfsCounter, 514 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 13:04:50,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 2173 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 13:04:50,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11416 states. [2022-10-16 13:04:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11416 to 9032. [2022-10-16 13:04:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9032 states, 7008 states have (on average 1.3153538812785388) internal successors, (9218), 7115 states have internal predecessors, (9218), 1324 states have call successors, (1324), 684 states have call predecessors, (1324), 684 states have return successors, (1324), 1306 states have call predecessors, (1324), 1324 states have call successors, (1324) [2022-10-16 13:04:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9032 states to 9032 states and 11866 transitions. [2022-10-16 13:04:51,703 INFO L78 Accepts]: Start accepts. Automaton has 9032 states and 11866 transitions. Word has length 101 [2022-10-16 13:04:51,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:04:51,704 INFO L495 AbstractCegarLoop]: Abstraction has 9032 states and 11866 transitions. [2022-10-16 13:04:51,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-10-16 13:04:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 9032 states and 11866 transitions. [2022-10-16 13:04:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-16 13:04:51,708 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:04:51,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:04:51,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 13:04:51,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 13:04:51,923 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:04:51,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:04:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1832190830, now seen corresponding path program 1 times [2022-10-16 13:04:51,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:04:51,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188792257] [2022-10-16 13:04:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:04:51,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:04:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:04:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:04:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:04:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:04:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:04:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-16 13:04:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:52,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-16 13:04:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:04:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-16 13:04:52,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:04:52,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188792257] [2022-10-16 13:04:52,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188792257] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:04:52,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:04:52,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 13:04:52,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516355014] [2022-10-16 13:04:52,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:04:52,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 13:04:52,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:04:52,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 13:04:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-16 13:04:52,466 INFO L87 Difference]: Start difference. First operand 9032 states and 11866 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:05:00,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:05:01,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:05:01,405 INFO L93 Difference]: Finished difference Result 19833 states and 26660 transitions. [2022-10-16 13:05:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:05:01,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 101 [2022-10-16 13:05:01,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:05:01,452 INFO L225 Difference]: With dead ends: 19833 [2022-10-16 13:05:01,452 INFO L226 Difference]: Without dead ends: 10847 [2022-10-16 13:05:01,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:05:01,476 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 473 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-10-16 13:05:01,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 2381 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-10-16 13:05:01,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10847 states. [2022-10-16 13:05:02,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10847 to 8988. [2022-10-16 13:05:02,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 6986 states have (on average 1.3131978242198683) internal successors, (9174), 7093 states have internal predecessors, (9174), 1302 states have call successors, (1302), 684 states have call predecessors, (1302), 684 states have return successors, (1302), 1284 states have call predecessors, (1302), 1302 states have call successors, (1302) [2022-10-16 13:05:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 11778 transitions. [2022-10-16 13:05:02,501 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 11778 transitions. Word has length 101 [2022-10-16 13:05:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:05:02,501 INFO L495 AbstractCegarLoop]: Abstraction has 8988 states and 11778 transitions. [2022-10-16 13:05:02,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:05:02,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 11778 transitions. [2022-10-16 13:05:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-16 13:05:02,505 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:05:02,506 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:02,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-16 13:05:02,506 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:05:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:05:02,507 INFO L85 PathProgramCache]: Analyzing trace with hash -553842990, now seen corresponding path program 1 times [2022-10-16 13:05:02,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:05:02,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152483086] [2022-10-16 13:05:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:05:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:05:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:05:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:03,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:05:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:05:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:05:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:05:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-16 13:05:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-16 13:05:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-16 13:05:03,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:05:03,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152483086] [2022-10-16 13:05:03,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152483086] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:05:03,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:05:03,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-16 13:05:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363292263] [2022-10-16 13:05:03,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:05:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 13:05:03,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:05:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 13:05:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-16 13:05:03,283 INFO L87 Difference]: Start difference. First operand 8988 states and 11778 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:05:06,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:05:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:05:11,702 INFO L93 Difference]: Finished difference Result 19855 states and 26731 transitions. [2022-10-16 13:05:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 13:05:11,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 101 [2022-10-16 13:05:11,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:05:11,750 INFO L225 Difference]: With dead ends: 19855 [2022-10-16 13:05:11,750 INFO L226 Difference]: Without dead ends: 10913 [2022-10-16 13:05:11,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:05:11,782 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 480 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:05:11,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 3714 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-10-16 13:05:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10913 states. [2022-10-16 13:05:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10913 to 9076. [2022-10-16 13:05:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9076 states, 7052 states have (on average 1.316505955757232) internal successors, (9284), 7181 states have internal predecessors, (9284), 1302 states have call successors, (1302), 684 states have call predecessors, (1302), 706 states have return successors, (1395), 1284 states have call predecessors, (1395), 1302 states have call successors, (1395) [2022-10-16 13:05:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9076 states to 9076 states and 11981 transitions. [2022-10-16 13:05:12,995 INFO L78 Accepts]: Start accepts. Automaton has 9076 states and 11981 transitions. Word has length 101 [2022-10-16 13:05:12,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:05:12,996 INFO L495 AbstractCegarLoop]: Abstraction has 9076 states and 11981 transitions. [2022-10-16 13:05:12,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:05:12,996 INFO L276 IsEmpty]: Start isEmpty. Operand 9076 states and 11981 transitions. [2022-10-16 13:05:13,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-10-16 13:05:13,001 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:05:13,001 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:13,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-16 13:05:13,002 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:05:13,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:05:13,003 INFO L85 PathProgramCache]: Analyzing trace with hash 519976192, now seen corresponding path program 1 times [2022-10-16 13:05:13,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:05:13,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209085083] [2022-10-16 13:05:13,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:05:13,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:05:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:05:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:05:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:05:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:05:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:05:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-16 13:05:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-10-16 13:05:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-16 13:05:13,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:05:13,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209085083] [2022-10-16 13:05:13,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209085083] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:05:13,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475242917] [2022-10-16 13:05:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:05:13,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:05:13,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:05:13,928 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:05:13,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 13:05:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:14,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 13:05:14,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:05:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-10-16 13:05:14,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:05:14,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475242917] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:05:14,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:05:14,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-10-16 13:05:14,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836058779] [2022-10-16 13:05:14,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:05:14,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 13:05:14,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:05:14,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 13:05:14,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-16 13:05:14,587 INFO L87 Difference]: Start difference. First operand 9076 states and 11981 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:05:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:05:17,350 INFO L93 Difference]: Finished difference Result 25264 states and 33444 transitions. [2022-10-16 13:05:17,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 13:05:17,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2022-10-16 13:05:17,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:05:17,425 INFO L225 Difference]: With dead ends: 25264 [2022-10-16 13:05:17,425 INFO L226 Difference]: Without dead ends: 16234 [2022-10-16 13:05:17,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:05:17,455 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 1021 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 13:05:17,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 4182 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 13:05:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16234 states. [2022-10-16 13:05:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16234 to 9090. [2022-10-16 13:05:18,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9090 states, 7066 states have (on average 1.3158788564958959) internal successors, (9298), 7195 states have internal predecessors, (9298), 1302 states have call successors, (1302), 684 states have call predecessors, (1302), 706 states have return successors, (1395), 1284 states have call predecessors, (1395), 1302 states have call successors, (1395) [2022-10-16 13:05:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9090 states to 9090 states and 11995 transitions. [2022-10-16 13:05:18,844 INFO L78 Accepts]: Start accepts. Automaton has 9090 states and 11995 transitions. Word has length 102 [2022-10-16 13:05:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:05:18,844 INFO L495 AbstractCegarLoop]: Abstraction has 9090 states and 11995 transitions. [2022-10-16 13:05:18,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 13:05:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 9090 states and 11995 transitions. [2022-10-16 13:05:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-10-16 13:05:18,849 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:05:18,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:18,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 13:05:19,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:05:19,063 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:05:19,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:05:19,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1299638652, now seen corresponding path program 1 times [2022-10-16 13:05:19,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:05:19,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881722217] [2022-10-16 13:05:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:05:19,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:05:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:19,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:05:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:19,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:05:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:05:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:05:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:05:19,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:19,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-16 13:05:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-10-16 13:05:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:05:19,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881722217] [2022-10-16 13:05:19,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881722217] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:05:19,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:05:19,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 13:05:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006534622] [2022-10-16 13:05:19,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:05:19,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 13:05:19,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:05:19,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 13:05:19,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 13:05:19,343 INFO L87 Difference]: Start difference. First operand 9090 states and 11995 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 13:05:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:05:26,256 INFO L93 Difference]: Finished difference Result 24397 states and 32492 transitions. [2022-10-16 13:05:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 13:05:26,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 100 [2022-10-16 13:05:26,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:05:26,317 INFO L225 Difference]: With dead ends: 24397 [2022-10-16 13:05:26,318 INFO L226 Difference]: Without dead ends: 15353 [2022-10-16 13:05:26,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-10-16 13:05:26,349 INFO L413 NwaCegarLoop]: 1665 mSDtfsCounter, 1381 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1448 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 1845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-10-16 13:05:26,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1448 Valid, 4379 Invalid, 1845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-10-16 13:05:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15353 states. [2022-10-16 13:05:27,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15353 to 9118. [2022-10-16 13:05:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9118 states, 7094 states have (on average 1.3146320834508034) internal successors, (9326), 7223 states have internal predecessors, (9326), 1302 states have call successors, (1302), 684 states have call predecessors, (1302), 706 states have return successors, (1395), 1284 states have call predecessors, (1395), 1302 states have call successors, (1395) [2022-10-16 13:05:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9118 states to 9118 states and 12023 transitions. [2022-10-16 13:05:27,744 INFO L78 Accepts]: Start accepts. Automaton has 9118 states and 12023 transitions. Word has length 100 [2022-10-16 13:05:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:05:27,745 INFO L495 AbstractCegarLoop]: Abstraction has 9118 states and 12023 transitions. [2022-10-16 13:05:27,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-10-16 13:05:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 9118 states and 12023 transitions. [2022-10-16 13:05:27,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 13:05:27,750 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:05:27,750 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:27,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-10-16 13:05:27,750 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting unlink_all_urbsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:05:27,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:05:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash 244631432, now seen corresponding path program 1 times [2022-10-16 13:05:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:05:27,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315256157] [2022-10-16 13:05:27,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:05:27,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:05:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:05:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:27,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:05:27,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:27,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:05:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:27,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:05:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:27,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-10-16 13:05:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-10-16 13:05:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:28,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-10-16 13:05:28,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:28,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-10-16 13:05:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:28,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-10-16 13:05:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:28,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-16 13:05:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-10-16 13:05:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-10-16 13:05:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:28,055 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-10-16 13:05:28,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:05:28,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315256157] [2022-10-16 13:05:28,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315256157] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:05:28,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:05:28,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-16 13:05:28,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530352953] [2022-10-16 13:05:28,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:05:28,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 13:05:28,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:05:28,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 13:05:28,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-16 13:05:28,057 INFO L87 Difference]: Start difference. First operand 9118 states and 12023 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 13:05:35,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:05:36,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:05:40,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:05:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:05:45,513 INFO L93 Difference]: Finished difference Result 27437 states and 38092 transitions. [2022-10-16 13:05:45,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 13:05:45,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-10-16 13:05:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:05:45,582 INFO L225 Difference]: With dead ends: 27437 [2022-10-16 13:05:45,582 INFO L226 Difference]: Without dead ends: 18365 [2022-10-16 13:05:45,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-10-16 13:05:45,610 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 2189 mSDsluCounter, 3564 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 1391 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 4503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1391 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-10-16 13:05:45,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2244 Valid, 5189 Invalid, 4503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1391 Valid, 3111 Invalid, 1 Unknown, 0 Unchecked, 15.4s Time] [2022-10-16 13:05:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18365 states. [2022-10-16 13:05:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18365 to 9118. [2022-10-16 13:05:47,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9118 states, 7094 states have (on average 1.3146320834508034) internal successors, (9326), 7223 states have internal predecessors, (9326), 1302 states have call successors, (1302), 684 states have call predecessors, (1302), 706 states have return successors, (1395), 1284 states have call predecessors, (1395), 1302 states have call successors, (1395) [2022-10-16 13:05:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9118 states to 9118 states and 12023 transitions. [2022-10-16 13:05:47,061 INFO L78 Accepts]: Start accepts. Automaton has 9118 states and 12023 transitions. Word has length 115 [2022-10-16 13:05:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:05:47,062 INFO L495 AbstractCegarLoop]: Abstraction has 9118 states and 12023 transitions. [2022-10-16 13:05:47,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-10-16 13:05:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 9118 states and 12023 transitions. [2022-10-16 13:05:47,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-16 13:05:47,066 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:05:47,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:05:47,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-10-16 13:05:47,067 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:05:47,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:05:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash 994118595, now seen corresponding path program 1 times [2022-10-16 13:05:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:05:47,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6612125] [2022-10-16 13:05:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:05:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:05:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:47,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:05:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:05:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:05:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:05:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:05:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:48,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 13:05:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:48,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-16 13:05:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:05:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:05:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:48,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-10-16 13:05:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:48,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:05:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:05:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-16 13:05:48,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:05:48,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6612125] [2022-10-16 13:05:48,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6612125] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:05:48,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 13:05:48,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-16 13:05:48,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39191819] [2022-10-16 13:05:48,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:05:48,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-16 13:05:48,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:05:48,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-16 13:05:48,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-16 13:05:48,221 INFO L87 Difference]: Start difference. First operand 9118 states and 12023 transitions. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-10-16 13:05:51,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:05:59,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 13:06:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 13:06:07,231 INFO L93 Difference]: Finished difference Result 38840 states and 53643 transitions. [2022-10-16 13:06:07,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-16 13:06:07,234 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 114 [2022-10-16 13:06:07,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 13:06:07,346 INFO L225 Difference]: With dead ends: 38840 [2022-10-16 13:06:07,346 INFO L226 Difference]: Without dead ends: 29768 [2022-10-16 13:06:07,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-10-16 13:06:07,380 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 3308 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 7614 mSolverCounterSat, 1521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3477 SdHoareTripleChecker+Valid, 6280 SdHoareTripleChecker+Invalid, 9135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1521 IncrementalHoareTripleChecker+Valid, 7614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-10-16 13:06:07,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3477 Valid, 6280 Invalid, 9135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1521 Valid, 7614 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2022-10-16 13:06:07,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29768 states. [2022-10-16 13:06:09,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29768 to 16547. [2022-10-16 13:06:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16547 states, 12932 states have (on average 1.3093102381688835) internal successors, (16932), 13146 states have internal predecessors, (16932), 2298 states have call successors, (2298), 1229 states have call predecessors, (2298), 1301 states have return successors, (2540), 2291 states have call predecessors, (2540), 2298 states have call successors, (2540) [2022-10-16 13:06:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16547 states to 16547 states and 21770 transitions. [2022-10-16 13:06:10,039 INFO L78 Accepts]: Start accepts. Automaton has 16547 states and 21770 transitions. Word has length 114 [2022-10-16 13:06:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 13:06:10,040 INFO L495 AbstractCegarLoop]: Abstraction has 16547 states and 21770 transitions. [2022-10-16 13:06:10,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-10-16 13:06:10,041 INFO L276 IsEmpty]: Start isEmpty. Operand 16547 states and 21770 transitions. [2022-10-16 13:06:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-10-16 13:06:10,044 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 13:06:10,044 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:10,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-10-16 13:06:10,045 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_usb_fill_bulk_urb_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_usb_fill_bulk_urb_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-10-16 13:06:10,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 13:06:10,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1135542265, now seen corresponding path program 1 times [2022-10-16 13:06:10,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 13:06:10,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236930653] [2022-10-16 13:06:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:10,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 13:06:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 13:06:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 13:06:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-10-16 13:06:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-16 13:06:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-10-16 13:06:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-10-16 13:06:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-10-16 13:06:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:06:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-16 13:06:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-10-16 13:06:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-10-16 13:06:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-10-16 13:06:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 13:06:10,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236930653] [2022-10-16 13:06:10,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236930653] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 13:06:10,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208633495] [2022-10-16 13:06:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 13:06:10,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 13:06:10,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 13:06:10,846 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 13:06:10,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 13:06:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 13:06:11,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 1399 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 13:06:11,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 13:06:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-10-16 13:06:11,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 13:06:11,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208633495] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 13:06:11,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 13:06:11,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 13 [2022-10-16 13:06:11,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383144884] [2022-10-16 13:06:11,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 13:06:11,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 13:06:11,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 13:06:11,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 13:06:11,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-10-16 13:06:11,731 INFO L87 Difference]: Start difference. First operand 16547 states and 21770 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11)