/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--adutux.ko.cil.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:36:22,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:36:22,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:36:22,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:36:22,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:36:22,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:36:22,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:36:22,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:36:22,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:36:22,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:36:22,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:36:22,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:36:22,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:36:22,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:36:22,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:36:22,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:36:22,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:36:22,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:36:22,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:36:22,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:36:22,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:36:22,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:36:22,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:36:22,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:36:22,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:36:22,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:36:22,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:36:22,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:36:22,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:36:22,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:36:22,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:36:22,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:36:22,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:36:22,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:36:22,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:36:22,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:36:22,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:36:22,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:36:22,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:36:22,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:36:22,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:36:22,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:36:22,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:36:22,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:36:22,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:36:22,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:36:22,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:36:22,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:36:22,154 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:36:22,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:36:22,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:36:22,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:36:22,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:36:22,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:36:22,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:36:22,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:36:22,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:36:22,156 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:36:22,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:36:22,156 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:36:22,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:36:22,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:36:22,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:36:22,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:36:22,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:36:22,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:36:22,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:36:22,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:36:22,158 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:36:22,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:36:22,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:36:22,158 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:36:22,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:36:22,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:36:22,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:36:22,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:36:22,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:36:22,417 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:36:22,419 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:36:22,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--adutux.ko.cil.i [2022-09-16 11:36:22,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08d4835a/5cbbd43836e948d4abc556b81bb092f8/FLAGd5effe654 [2022-09-16 11:36:23,033 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:36:23,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--adutux.ko.cil.i [2022-09-16 11:36:23,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08d4835a/5cbbd43836e948d4abc556b81bb092f8/FLAGd5effe654 [2022-09-16 11:36:23,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b08d4835a/5cbbd43836e948d4abc556b81bb092f8 [2022-09-16 11:36:23,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:36:23,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:36:23,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:36:23,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:36:23,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:36:23,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:36:23" (1/1) ... [2022-09-16 11:36:23,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0863a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:23, skipping insertion in model container [2022-09-16 11:36:23,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:36:23" (1/1) ... [2022-09-16 11:36:23,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:36:23,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:36:24,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--adutux.ko.cil.i[196530,196543] [2022-09-16 11:36:24,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:36:24,693 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:36:24,907 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.14-races/linux-3.14--drivers--usb--misc--adutux.ko.cil.i[196530,196543] [2022-09-16 11:36:24,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:36:25,028 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:36:25,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25 WrapperNode [2022-09-16 11:36:25,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:36:25,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:36:25,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:36:25,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:36:25,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,283 INFO L138 Inliner]: procedures = 286, calls = 1704, calls flagged for inlining = 418, calls inlined = 483, statements flattened = 5881 [2022-09-16 11:36:25,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:36:25,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:36:25,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:36:25,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:36:25,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:36:25,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:36:25,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:36:25,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:36:25,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (1/1) ... [2022-09-16 11:36:25,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:36:25,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:36:25,467 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) [2022-09-16 11:36:25,476 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 [2022-09-16 11:36:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-09-16 11:36:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_insmod_4 [2022-09-16 11:36:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_insmod_4 [2022-09-16 11:36:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:36:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_scenario_3 [2022-09-16 11:36:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_scenario_3 [2022-09-16 11:36:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_character_driver_scenario_2 [2022-09-16 11:36:25,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_character_driver_scenario_2 [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:36:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:36:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:36:25,503 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:36:26,026 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:36:26,027 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:36:29,620 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:36:29,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:36:29,641 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2022-09-16 11:36:29,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:36:29 BoogieIcfgContainer [2022-09-16 11:36:29,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:36:29,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:36:29,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:36:29,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:36:29,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:36:23" (1/3) ... [2022-09-16 11:36:29,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6116ff8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:36:29, skipping insertion in model container [2022-09-16 11:36:29,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:36:25" (2/3) ... [2022-09-16 11:36:29,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6116ff8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:36:29, skipping insertion in model container [2022-09-16 11:36:29,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:36:29" (3/3) ... [2022-09-16 11:36:29,652 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.14--drivers--usb--misc--adutux.ko.cil.i [2022-09-16 11:36:29,663 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:36:29,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2022-09-16 11:36:29,663 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:36:30,457 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-09-16 11:36:30,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 6766 places, 7097 transitions, 14230 flow [2022-09-16 11:36:54,131 INFO L130 PetriNetUnfolder]: 590/11191 cut-off events. [2022-09-16 11:36:54,132 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-09-16 11:36:55,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11214 conditions, 11191 events. 590/11191 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 59516 event pairs, 0 based on Foata normal form. 0/10505 useless extension candidates. Maximal degree in co-relation 10336. Up to 24 conditions per place. [2022-09-16 11:36:55,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 6766 places, 7097 transitions, 14230 flow [2022-09-16 11:36:55,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6714 places, 7043 transitions, 14110 flow [2022-09-16 11:36:55,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:36:55,617 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@22b8bdd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:36:55,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 109 error locations. [2022-09-16 11:36:56,974 INFO L130 PetriNetUnfolder]: 74/2948 cut-off events. [2022-09-16 11:36:56,974 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-09-16 11:36:56,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:36:56,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:36:56,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_usb_scenario_3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_character_driver_scenario_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_character_driver_scenario_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 107 more)] === [2022-09-16 11:36:56,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:36:56,980 INFO L85 PathProgramCache]: Analyzing trace with hash -216257318, now seen corresponding path program 1 times [2022-09-16 11:36:56,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:36:56,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109063617] [2022-09-16 11:36:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:36:56,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:36:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:36:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:36:57,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:36:57,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109063617] [2022-09-16 11:36:57,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109063617] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:36:57,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:36:57,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:36:57,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035313447] [2022-09-16 11:36:57,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:36:57,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:36:57,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:36:57,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:36:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:36:58,031 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 6853 out of 7099 [2022-09-16 11:36:58,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6714 places, 7043 transitions, 14110 flow. Second operand has 5 states, 5 states have (on average 6855.8) internal successors, (34279), 5 states have internal predecessors, (34279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:36:58,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:36:58,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6853 of 7099 [2022-09-16 11:36:58,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:37:39,795 INFO L130 PetriNetUnfolder]: 930/29992 cut-off events. [2022-09-16 11:37:39,795 INFO L131 PetriNetUnfolder]: For 356/358 co-relation queries the response was YES. [2022-09-16 11:37:41,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30630 conditions, 29992 events. 930/29992 cut-off events. For 356/358 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 270009 event pairs, 9 based on Foata normal form. 1750/30361 useless extension candidates. Maximal degree in co-relation 26998. Up to 272 conditions per place. [2022-09-16 11:37:42,190 INFO L137 encePairwiseOnDemand]: 6960/7099 looper letters, 69 selfloop transitions, 8 changer transitions 5/6656 dead transitions. [2022-09-16 11:37:42,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 6490 places, 6656 transitions, 13562 flow [2022-09-16 11:37:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:37:42,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:37:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 48644 transitions. [2022-09-16 11:37:42,269 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9788903869760328 [2022-09-16 11:37:42,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 48644 transitions. [2022-09-16 11:37:42,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 48644 transitions. [2022-09-16 11:37:42,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:37:42,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 48644 transitions. [2022-09-16 11:37:42,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 6949.142857142857) internal successors, (48644), 7 states have internal predecessors, (48644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:37:42,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 7099.0) internal successors, (56792), 8 states have internal predecessors, (56792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:37:42,529 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 7099.0) internal successors, (56792), 8 states have internal predecessors, (56792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:37:42,531 INFO L175 Difference]: Start difference. First operand has 6714 places, 7043 transitions, 14110 flow. Second operand 7 states and 48644 transitions. [2022-09-16 11:37:42,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 6490 places, 6656 transitions, 13562 flow [2022-09-16 11:37:42,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6484 places, 6656 transitions, 13498 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:37:42,650 INFO L231 Difference]: Finished difference. Result has 6486 places, 6625 transitions, 13286 flow [2022-09-16 11:37:42,660 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=7099, PETRI_DIFFERENCE_MINUEND_FLOW=13264, PETRI_DIFFERENCE_MINUEND_PLACES=6478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13286, PETRI_PLACES=6486, PETRI_TRANSITIONS=6625} [2022-09-16 11:37:42,664 INFO L287 CegarLoopForPetriNet]: 6714 programPoint places, -228 predicate places. [2022-09-16 11:37:42,664 INFO L495 AbstractCegarLoop]: Abstraction has has 6486 places, 6625 transitions, 13286 flow [2022-09-16 11:37:42,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6855.8) internal successors, (34279), 5 states have internal predecessors, (34279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:37:42,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:37:42,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:37:42,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:37:42,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_usb_scenario_3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_character_driver_scenario_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_character_driver_scenario_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 107 more)] === [2022-09-16 11:37:42,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:37:42,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1885978590, now seen corresponding path program 1 times [2022-09-16 11:37:42,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:37:42,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733356080] [2022-09-16 11:37:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:37:42,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:37:42,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:37:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:37:43,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:37:43,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733356080] [2022-09-16 11:37:43,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733356080] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:37:43,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:37:43,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:37:43,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134047474] [2022-09-16 11:37:43,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:37:43,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:37:43,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:37:43,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:37:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:37:43,100 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 6853 out of 7099 [2022-09-16 11:37:43,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6486 places, 6625 transitions, 13286 flow. Second operand has 5 states, 5 states have (on average 6856.0) internal successors, (34280), 5 states have internal predecessors, (34280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:37:43,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:37:43,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6853 of 7099 [2022-09-16 11:37:43,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:38:21,273 INFO L130 PetriNetUnfolder]: 906/29939 cut-off events. [2022-09-16 11:38:21,299 INFO L131 PetriNetUnfolder]: For 163/165 co-relation queries the response was YES. [2022-09-16 11:38:23,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30380 conditions, 29939 events. 906/29939 cut-off events. For 163/165 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 267495 event pairs, 9 based on Foata normal form. 0/28598 useless extension candidates. Maximal degree in co-relation 26795. Up to 224 conditions per place. [2022-09-16 11:38:23,545 INFO L137 encePairwiseOnDemand]: 7085/7099 looper letters, 63 selfloop transitions, 8 changer transitions 0/6645 dead transitions. [2022-09-16 11:38:23,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 6481 places, 6645 transitions, 13494 flow [2022-09-16 11:38:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:38:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:38:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 48048 transitions. [2022-09-16 11:38:23,590 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9668967460205663 [2022-09-16 11:38:23,590 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 48048 transitions. [2022-09-16 11:38:23,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 48048 transitions. [2022-09-16 11:38:23,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:38:23,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 48048 transitions. [2022-09-16 11:38:23,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 6864.0) internal successors, (48048), 7 states have internal predecessors, (48048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:38:23,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 7099.0) internal successors, (56792), 8 states have internal predecessors, (56792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:38:23,694 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 7099.0) internal successors, (56792), 8 states have internal predecessors, (56792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:38:23,694 INFO L175 Difference]: Start difference. First operand has 6486 places, 6625 transitions, 13286 flow. Second operand 7 states and 48048 transitions. [2022-09-16 11:38:23,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 6481 places, 6645 transitions, 13494 flow [2022-09-16 11:38:23,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 6477 places, 6645 transitions, 13486 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:38:23,798 INFO L231 Difference]: Finished difference. Result has 6477 places, 6619 transitions, 13282 flow [2022-09-16 11:38:23,808 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=7099, PETRI_DIFFERENCE_MINUEND_FLOW=13266, PETRI_DIFFERENCE_MINUEND_PLACES=6471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13282, PETRI_PLACES=6477, PETRI_TRANSITIONS=6619} [2022-09-16 11:38:23,809 INFO L287 CegarLoopForPetriNet]: 6714 programPoint places, -237 predicate places. [2022-09-16 11:38:23,809 INFO L495 AbstractCegarLoop]: Abstraction has has 6477 places, 6619 transitions, 13282 flow [2022-09-16 11:38:23,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6856.0) internal successors, (34280), 5 states have internal predecessors, (34280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:38:23,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:38:23,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:38:23,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:38:23,818 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_usb_scenario_3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ldv_character_driver_scenario_2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, ldv_character_driver_scenario_2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 107 more)] === [2022-09-16 11:38:23,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:38:23,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1443676805, now seen corresponding path program 1 times [2022-09-16 11:38:23,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:38:23,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024975458] [2022-09-16 11:38:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:38:23,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:38:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:38:24,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:38:24,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:38:24,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024975458] [2022-09-16 11:38:24,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024975458] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:38:24,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:38:24,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:38:24,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484247380] [2022-09-16 11:38:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:38:24,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:38:24,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:38:24,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:38:24,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:38:24,217 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 6889 out of 7099 [2022-09-16 11:38:24,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6477 places, 6619 transitions, 13282 flow. Second operand has 3 states, 3 states have (on average 6891.666666666667) internal successors, (20675), 3 states have internal predecessors, (20675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:38:24,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:38:24,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6889 of 7099 [2022-09-16 11:38:24,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand