/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 13:07:26,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 13:07:26,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 13:07:26,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 13:07:26,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 13:07:26,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 13:07:26,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 13:07:26,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 13:07:26,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 13:07:26,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 13:07:26,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 13:07:26,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 13:07:26,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 13:07:26,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 13:07:26,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 13:07:26,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 13:07:26,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 13:07:26,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 13:07:26,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 13:07:26,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 13:07:26,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 13:07:26,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 13:07:26,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 13:07:26,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 13:07:26,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 13:07:26,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 13:07:26,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 13:07:26,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 13:07:26,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 13:07:26,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 13:07:26,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 13:07:26,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 13:07:26,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 13:07:26,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 13:07:26,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 13:07:26,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 13:07:26,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 13:07:26,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 13:07:26,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 13:07:26,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 13:07:26,832 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 13:07:26,837 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 13:07:26,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 13:07:26,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 13:07:26,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 13:07:26,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 13:07:26,876 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 13:07:26,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 13:07:26,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 13:07:26,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 13:07:26,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 13:07:26,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 13:07:26,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 13:07:26,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 13:07:26,881 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 13:07:26,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 13:07:26,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 13:07:26,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 13:07:26,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 13:07:26,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:07:26,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 13:07:26,883 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 13:07:26,883 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 13:07:26,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 13:07:26,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 13:07:26,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 13:07:26,884 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 13:07:26,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 13:07:27,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 13:07:27,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 13:07:27,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 13:07:27,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 13:07:27,388 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 13:07:27,389 INFO L432 ainManager$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--media--rc--imon.ko-entry_point.cil.out.i [2020-12-22 13:07:27,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c35b63997/b26c58e9f55b4f9dac08e8c4acb130fb/FLAG04eed853c [2020-12-22 13:07:28,582 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 13:07:28,582 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--media--rc--imon.ko-entry_point.cil.out.i [2020-12-22 13:07:28,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c35b63997/b26c58e9f55b4f9dac08e8c4acb130fb/FLAG04eed853c [2020-12-22 13:07:28,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c35b63997/b26c58e9f55b4f9dac08e8c4acb130fb [2020-12-22 13:07:28,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 13:07:28,964 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 13:07:28,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 13:07:28,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 13:07:28,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 13:07:28,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:07:28" (1/1) ... [2020-12-22 13:07:28,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc36bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:28, skipping insertion in model container [2020-12-22 13:07:28,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:07:28" (1/1) ... [2020-12-22 13:07:28,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 13:07:29,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 13:07:30,107 WARN L226 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--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2020-12-22 13:07:30,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:07:30,949 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 13:07:31,051 WARN L226 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--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2020-12-22 13:07:31,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 13:07:31,775 INFO L208 MainTranslator]: Completed translation [2020-12-22 13:07:31,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31 WrapperNode [2020-12-22 13:07:31,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 13:07:31,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 13:07:31,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 13:07:31,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 13:07:31,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... [2020-12-22 13:07:31,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... [2020-12-22 13:07:32,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 13:07:32,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 13:07:32,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 13:07:32,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 13:07:32,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... [2020-12-22 13:07:32,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... [2020-12-22 13:07:32,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... [2020-12-22 13:07:32,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... [2020-12-22 13:07:33,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... [2020-12-22 13:07:33,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... [2020-12-22 13:07:33,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... [2020-12-22 13:07:33,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 13:07:33,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 13:07:33,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 13:07:33,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 13:07:33,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 13:07:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 13:07:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 13:07:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 13:07:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-12-22 13:07:33,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-12-22 13:07:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 13:07:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2020-12-22 13:07:33,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2020-12-22 13:07:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 13:07:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2020-12-22 13:07:33,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2020-12-22 13:07:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 13:07:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 13:07:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf1 [2020-12-22 13:07:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf1 [2020-12-22 13:07:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf0 [2020-12-22 13:07:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf0 [2020-12-22 13:07:33,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 13:07:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 13:07:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 13:07:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 13:07:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 13:07:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 13:07:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 13:07:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:07:33,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 13:07:33,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 13:07:33,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 13:07:33,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 13:09:01,012 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 13:09:01,013 INFO L299 CfgBuilder]: Removed 1883 assume(true) statements. [2020-12-22 13:09:01,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:09:01 BoogieIcfgContainer [2020-12-22 13:09:01,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 13:09:01,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 13:09:01,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 13:09:01,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 13:09:01,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:07:28" (1/3) ... [2020-12-22 13:09:01,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10eaff72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:09:01, skipping insertion in model container [2020-12-22 13:09:01,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:07:31" (2/3) ... [2020-12-22 13:09:01,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10eaff72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:09:01, skipping insertion in model container [2020-12-22 13:09:01,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:09:01" (3/3) ... [2020-12-22 13:09:01,031 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2020-12-22 13:09:01,038 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 13:09:01,046 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 13:09:01,068 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 13:09:01,124 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 13:09:01,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 13:09:01,124 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 13:09:01,125 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 13:09:01,125 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 13:09:01,125 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 13:09:01,125 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 13:09:01,125 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 13:09:01,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states. [2020-12-22 13:09:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 13:09:01,206 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:01,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:09:01,208 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:01,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:01,214 INFO L82 PathProgramCache]: Analyzing trace with hash 351109344, now seen corresponding path program 1 times [2020-12-22 13:09:01,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:01,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277368926] [2020-12-22 13:09:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:09:02,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277368926] [2020-12-22 13:09:02,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:02,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:09:02,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445957440] [2020-12-22 13:09:02,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:02,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:02,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:02,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:02,276 INFO L87 Difference]: Start difference. First operand 2464 states. Second operand 3 states. [2020-12-22 13:09:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:02,526 INFO L93 Difference]: Finished difference Result 4924 states and 7187 transitions. [2020-12-22 13:09:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:02,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-22 13:09:02,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:02,570 INFO L225 Difference]: With dead ends: 4924 [2020-12-22 13:09:02,570 INFO L226 Difference]: Without dead ends: 2450 [2020-12-22 13:09:02,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2020-12-22 13:09:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2450. [2020-12-22 13:09:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2450 states. [2020-12-22 13:09:02,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3520 transitions. [2020-12-22 13:09:02,776 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3520 transitions. Word has length 35 [2020-12-22 13:09:02,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:02,776 INFO L481 AbstractCegarLoop]: Abstraction has 2450 states and 3520 transitions. [2020-12-22 13:09:02,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:02,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3520 transitions. [2020-12-22 13:09:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 13:09:02,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:02,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:09:02,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 13:09:02,785 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:02,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:02,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1281586629, now seen corresponding path program 1 times [2020-12-22 13:09:02,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:02,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509607229] [2020-12-22 13:09:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-22 13:09:03,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509607229] [2020-12-22 13:09:03,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 13:09:03,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 13:09:03,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382513494] [2020-12-22 13:09:03,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 13:09:03,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:03,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 13:09:03,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:03,531 INFO L87 Difference]: Start difference. First operand 2450 states and 3520 transitions. Second operand 3 states. [2020-12-22 13:09:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:05,921 INFO L93 Difference]: Finished difference Result 7177 states and 10357 transitions. [2020-12-22 13:09:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 13:09:05,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 13:09:05,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:05,952 INFO L225 Difference]: With dead ends: 7177 [2020-12-22 13:09:05,953 INFO L226 Difference]: Without dead ends: 4778 [2020-12-22 13:09:05,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 13:09:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2020-12-22 13:09:06,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 4778. [2020-12-22 13:09:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4778 states. [2020-12-22 13:09:06,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6895 transitions. [2020-12-22 13:09:06,117 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6895 transitions. Word has length 36 [2020-12-22 13:09:06,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:06,117 INFO L481 AbstractCegarLoop]: Abstraction has 4778 states and 6895 transitions. [2020-12-22 13:09:06,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 13:09:06,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6895 transitions. [2020-12-22 13:09:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 13:09:06,123 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:06,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:09:06,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 13:09:06,126 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash 284839062, now seen corresponding path program 1 times [2020-12-22 13:09:06,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:06,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277704038] [2020-12-22 13:09:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:09:07,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277704038] [2020-12-22 13:09:07,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280397281] [2020-12-22 13:09:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:09:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:10,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 3798 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 13:09:10,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:09:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:09:10,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:09:10,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 13:09:10,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802847704] [2020-12-22 13:09:10,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 13:09:10,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:09:10,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 13:09:10,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:09:10,237 INFO L87 Difference]: Start difference. First operand 4778 states and 6895 transitions. Second operand 6 states. [2020-12-22 13:09:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:09:10,425 INFO L93 Difference]: Finished difference Result 9507 states and 13732 transitions. [2020-12-22 13:09:10,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 13:09:10,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-12-22 13:09:10,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:09:10,452 INFO L225 Difference]: With dead ends: 9507 [2020-12-22 13:09:10,453 INFO L226 Difference]: Without dead ends: 4779 [2020-12-22 13:09:10,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 13:09:10,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2020-12-22 13:09:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 4779. [2020-12-22 13:09:10,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4779 states. [2020-12-22 13:09:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 6896 transitions. [2020-12-22 13:09:10,610 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 6896 transitions. Word has length 42 [2020-12-22 13:09:10,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:09:10,611 INFO L481 AbstractCegarLoop]: Abstraction has 4779 states and 6896 transitions. [2020-12-22 13:09:10,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 13:09:10,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 6896 transitions. [2020-12-22 13:09:10,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 13:09:10,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:09:10,613 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 13:09:10,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 13:09:10,827 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:09:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:09:10,828 INFO L82 PathProgramCache]: Analyzing trace with hash 118946833, now seen corresponding path program 2 times [2020-12-22 13:09:10,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:09:10,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799421322] [2020-12-22 13:09:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:09:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:09:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 13:09:11,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799421322] [2020-12-22 13:09:11,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463454906] [2020-12-22 13:09:11,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true