./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:30:24,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:30:24,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:30:24,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:30:24,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:30:24,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:30:24,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:30:24,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:30:24,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:30:24,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:30:24,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:30:24,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:30:24,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:30:24,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:30:24,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:30:24,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:30:24,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:30:24,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:30:24,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:30:24,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:30:24,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:30:24,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:30:24,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:30:24,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:30:24,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:30:24,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:30:24,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:30:24,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:30:24,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:30:24,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:30:24,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:30:24,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:30:24,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:30:24,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:30:24,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:30:24,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:30:24,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:30:24,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:30:24,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:30:24,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:30:24,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:30:24,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:30:24,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:30:24,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:30:24,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:30:24,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:30:24,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:30:24,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:30:24,619 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:30:24,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:30:24,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:30:24,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:30:24,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:30:24,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:30:24,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:30:24,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:30:24,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:30:24,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:30:24,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:30:24,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:30:24,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:30:24,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:30:24,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:30:24,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:30:24,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:30:24,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:30:24,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:30:24,622 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:30:24,622 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:30:24,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:30:24,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:30:24,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 [2021-11-06 17:30:24,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:30:24,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:30:24,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:30:24,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:30:24,799 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:30:24,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-11-06 17:30:24,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6bbd6066/a68eb8b5ae2c4f32876c77c953d52689/FLAGfa0e4a298 [2021-11-06 17:30:25,409 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:30:25,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-11-06 17:30:25,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6bbd6066/a68eb8b5ae2c4f32876c77c953d52689/FLAGfa0e4a298 [2021-11-06 17:30:25,608 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6bbd6066/a68eb8b5ae2c4f32876c77c953d52689 [2021-11-06 17:30:25,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:30:25,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:30:25,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:30:25,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:30:25,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:30:25,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:30:25" (1/1) ... [2021-11-06 17:30:25,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f3bb26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:25, skipping insertion in model container [2021-11-06 17:30:25,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:30:25" (1/1) ... [2021-11-06 17:30:25,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:30:25,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:30:26,784 WARN L228 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2021-11-06 17:30:26,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:30:26,850 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:30:27,109 WARN L228 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2021-11-06 17:30:27,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:30:27,174 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:30:27,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27 WrapperNode [2021-11-06 17:30:27,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:30:27,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:30:27,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:30:27,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:30:27,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:27,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:29,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:30:29,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:30:29,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:30:29,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:30:29,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:29,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:30,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:30,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:31,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:31,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:31,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:32,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:30:32,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:30:32,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:30:32,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:30:32,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (1/1) ... [2021-11-06 17:30:32,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:30:32,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:30:32,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 17:30:32,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 17:30:32,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:30:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:30:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:30:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:30:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:30:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:30:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:30:32,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:30:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:30:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:30:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:30:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:30:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:30:32,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:30:32,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:31:47,263 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:31:47,263 INFO L299 CfgBuilder]: Removed 22630 assume(true) statements. [2021-11-06 17:31:47,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:31:47 BoogieIcfgContainer [2021-11-06 17:31:47,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:31:47,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:31:47,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:31:47,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:31:47,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:30:25" (1/3) ... [2021-11-06 17:31:47,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2ebfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:31:47, skipping insertion in model container [2021-11-06 17:31:47,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:30:27" (2/3) ... [2021-11-06 17:31:47,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2ebfb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:31:47, skipping insertion in model container [2021-11-06 17:31:47,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:31:47" (3/3) ... [2021-11-06 17:31:47,280 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-11-06 17:31:47,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:31:47,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2021-11-06 17:31:47,361 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:31:47,368 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 17:31:47,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2021-11-06 17:31:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand has 15305 states, 15254 states have (on average 1.3831126261964075) internal successors, (21098), 15304 states have internal predecessors, (21098), 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) [2021-11-06 17:31:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 17:31:47,520 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:31:47,520 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:31:47,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-06 17:31:47,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:31:47,524 INFO L85 PathProgramCache]: Analyzing trace with hash 841978211, now seen corresponding path program 1 times [2021-11-06 17:31:47,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:31:47,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138650010] [2021-11-06 17:31:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:31:47,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:31:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:31:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:31:47,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:31:47,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138650010] [2021-11-06 17:31:47,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138650010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:31:47,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:31:47,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:31:47,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500171201] [2021-11-06 17:31:47,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:31:47,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:31:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:31:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:31:47,981 INFO L87 Difference]: Start difference. First operand has 15305 states, 15254 states have (on average 1.3831126261964075) internal successors, (21098), 15304 states have internal predecessors, (21098), 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) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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) [2021-11-06 17:31:48,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:31:48,511 INFO L93 Difference]: Finished difference Result 30606 states and 42191 transitions. [2021-11-06 17:31:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:31:48,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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) Word has length 57 [2021-11-06 17:31:48,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:31:48,567 INFO L225 Difference]: With dead ends: 30606 [2021-11-06 17:31:48,567 INFO L226 Difference]: Without dead ends: 15113 [2021-11-06 17:31:48,591 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:31:48,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15113 states. [2021-11-06 17:31:48,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15113 to 15113. [2021-11-06 17:31:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15113 states, 15063 states have (on average 1.3680541724756026) internal successors, (20607), 15112 states have internal predecessors, (20607), 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) [2021-11-06 17:31:48,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15113 states to 15113 states and 20607 transitions. [2021-11-06 17:31:48,926 INFO L78 Accepts]: Start accepts. Automaton has 15113 states and 20607 transitions. Word has length 57 [2021-11-06 17:31:48,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:31:48,927 INFO L470 AbstractCegarLoop]: Abstraction has 15113 states and 20607 transitions. [2021-11-06 17:31:48,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 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) [2021-11-06 17:31:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand 15113 states and 20607 transitions. [2021-11-06 17:31:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 17:31:48,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:31:48,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:31:48,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:31:48,939 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-06 17:31:48,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:31:48,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1129777635, now seen corresponding path program 1 times [2021-11-06 17:31:48,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:31:48,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959103747] [2021-11-06 17:31:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:31:48,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:31:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:31:49,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:31:49,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:31:49,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959103747] [2021-11-06 17:31:49,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959103747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:31:49,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:31:49,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:31:49,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476139578] [2021-11-06 17:31:49,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:31:49,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:31:49,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:31:49,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:31:49,128 INFO L87 Difference]: Start difference. First operand 15113 states and 20607 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-06 17:31:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:31:49,855 INFO L93 Difference]: Finished difference Result 45834 states and 62643 transitions. [2021-11-06 17:31:49,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:31:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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) Word has length 57 [2021-11-06 17:31:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:31:50,190 INFO L225 Difference]: With dead ends: 45834 [2021-11-06 17:31:50,190 INFO L226 Difference]: Without dead ends: 30736 [2021-11-06 17:31:50,218 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:31:50,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30736 states. [2021-11-06 17:31:50,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30736 to 17013. [2021-11-06 17:31:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17013 states, 16963 states have (on average 1.371278665330425) internal successors, (23261), 17012 states have internal predecessors, (23261), 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) [2021-11-06 17:31:50,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17013 states to 17013 states and 23261 transitions. [2021-11-06 17:31:50,635 INFO L78 Accepts]: Start accepts. Automaton has 17013 states and 23261 transitions. Word has length 57 [2021-11-06 17:31:50,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:31:50,636 INFO L470 AbstractCegarLoop]: Abstraction has 17013 states and 23261 transitions. [2021-11-06 17:31:50,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-06 17:31:50,637 INFO L276 IsEmpty]: Start isEmpty. Operand 17013 states and 23261 transitions. [2021-11-06 17:31:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 17:31:50,644 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:31:50,644 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:31:50,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:31:50,644 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-06 17:31:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:31:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash -460897366, now seen corresponding path program 1 times [2021-11-06 17:31:50,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:31:50,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313850308] [2021-11-06 17:31:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:31:50,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:31:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:31:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:31:50,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:31:50,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313850308] [2021-11-06 17:31:50,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313850308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:31:50,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:31:50,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:31:50,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888686070] [2021-11-06 17:31:50,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:31:50,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:31:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:31:50,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:31:50,814 INFO L87 Difference]: Start difference. First operand 17013 states and 23261 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-06 17:31:51,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:31:51,522 INFO L93 Difference]: Finished difference Result 55334 states and 75915 transitions. [2021-11-06 17:31:51,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:31:51,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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) Word has length 58 [2021-11-06 17:31:51,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:31:51,605 INFO L225 Difference]: With dead ends: 55334 [2021-11-06 17:31:51,606 INFO L226 Difference]: Without dead ends: 38336 [2021-11-06 17:31:51,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:31:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38336 states. [2021-11-06 17:31:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38336 to 30638. [2021-11-06 17:31:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30638 states, 30588 states have (on average 1.3724663266640513) internal successors, (41981), 30637 states have internal predecessors, (41981), 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) [2021-11-06 17:31:52,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30638 states to 30638 states and 41981 transitions. [2021-11-06 17:31:52,424 INFO L78 Accepts]: Start accepts. Automaton has 30638 states and 41981 transitions. Word has length 58 [2021-11-06 17:31:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:31:52,425 INFO L470 AbstractCegarLoop]: Abstraction has 30638 states and 41981 transitions. [2021-11-06 17:31:52,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-06 17:31:52,425 INFO L276 IsEmpty]: Start isEmpty. Operand 30638 states and 41981 transitions. [2021-11-06 17:31:52,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 17:31:52,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:31:52,432 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:31:52,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:31:52,432 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-06 17:31:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:31:52,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1200433619, now seen corresponding path program 1 times [2021-11-06 17:31:52,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:31:52,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255933176] [2021-11-06 17:31:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:31:52,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:31:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:31:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:31:52,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:31:52,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255933176] [2021-11-06 17:31:52,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255933176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:31:52,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:31:52,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:31:52,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874573615] [2021-11-06 17:31:52,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:31:52,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:31:52,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:31:52,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:31:52,555 INFO L87 Difference]: Start difference. First operand 30638 states and 41981 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-06 17:31:53,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:31:53,821 INFO L93 Difference]: Finished difference Result 100548 states and 138235 transitions. [2021-11-06 17:31:53,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:31:53,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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) Word has length 59 [2021-11-06 17:31:53,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:31:53,997 INFO L225 Difference]: With dead ends: 100548 [2021-11-06 17:31:53,997 INFO L226 Difference]: Without dead ends: 69925 [2021-11-06 17:31:54,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:31:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69925 states. [2021-11-06 17:31:55,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69925 to 54618. [2021-11-06 17:31:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54618 states, 54568 states have (on average 1.3735522650637737) internal successors, (74952), 54617 states have internal predecessors, (74952), 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) [2021-11-06 17:31:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54618 states to 54618 states and 74952 transitions. [2021-11-06 17:31:55,267 INFO L78 Accepts]: Start accepts. Automaton has 54618 states and 74952 transitions. Word has length 59 [2021-11-06 17:31:55,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:31:55,269 INFO L470 AbstractCegarLoop]: Abstraction has 54618 states and 74952 transitions. [2021-11-06 17:31:55,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 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) [2021-11-06 17:31:55,269 INFO L276 IsEmpty]: Start isEmpty. Operand 54618 states and 74952 transitions. [2021-11-06 17:31:55,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-06 17:31:55,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:31:55,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:31:55,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:31:55,277 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-06 17:31:55,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:31:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1643758202, now seen corresponding path program 1 times [2021-11-06 17:31:55,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:31:55,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168087367] [2021-11-06 17:31:55,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:31:55,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:31:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:31:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:31:55,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:31:55,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168087367] [2021-11-06 17:31:55,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168087367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:31:55,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:31:55,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:31:55,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149143864] [2021-11-06 17:31:55,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:31:55,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:31:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:31:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:31:55,386 INFO L87 Difference]: Start difference. First operand 54618 states and 74952 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-06 17:31:57,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:31:57,636 INFO L93 Difference]: Finished difference Result 181162 states and 249456 transitions. [2021-11-06 17:31:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:31:57,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) Word has length 60 [2021-11-06 17:31:57,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:31:57,979 INFO L225 Difference]: With dead ends: 181162 [2021-11-06 17:31:57,979 INFO L226 Difference]: Without dead ends: 126559 [2021-11-06 17:31:58,217 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:31:58,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126559 states. [2021-11-06 17:32:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126559 to 96037. [2021-11-06 17:32:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96037 states, 95987 states have (on average 1.3747069915717753) internal successors, (131954), 96036 states have internal predecessors, (131954), 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) [2021-11-06 17:32:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96037 states to 96037 states and 131954 transitions. [2021-11-06 17:32:00,641 INFO L78 Accepts]: Start accepts. Automaton has 96037 states and 131954 transitions. Word has length 60 [2021-11-06 17:32:00,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:32:00,641 INFO L470 AbstractCegarLoop]: Abstraction has 96037 states and 131954 transitions. [2021-11-06 17:32:00,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-06 17:32:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand 96037 states and 131954 transitions. [2021-11-06 17:32:00,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-06 17:32:00,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:32:00,649 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:32:00,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:32:00,649 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-06 17:32:00,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:32:00,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1941580202, now seen corresponding path program 1 times [2021-11-06 17:32:00,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:32:00,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619164456] [2021-11-06 17:32:00,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:32:00,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:32:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:32:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 17:32:00,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:32:00,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619164456] [2021-11-06 17:32:00,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619164456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:32:00,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:32:00,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:32:00,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324062117] [2021-11-06 17:32:00,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:32:00,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:32:00,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:32:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:32:00,772 INFO L87 Difference]: Start difference. First operand 96037 states and 131954 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 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)