./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.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 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 03:43:10,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 03:43:10,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 03:43:10,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 03:43:10,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 03:43:10,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 03:43:10,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 03:43:10,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 03:43:10,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 03:43:10,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 03:43:10,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 03:43:10,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 03:43:10,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 03:43:10,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 03:43:10,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 03:43:10,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 03:43:10,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 03:43:10,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 03:43:10,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 03:43:10,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 03:43:10,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 03:43:10,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 03:43:10,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 03:43:10,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 03:43:10,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 03:43:10,616 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 03:43:10,616 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 03:43:10,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 03:43:10,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 03:43:10,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 03:43:10,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 03:43:10,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 03:43:10,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 03:43:10,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 03:43:10,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 03:43:10,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 03:43:10,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 03:43:10,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 03:43:10,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 03:43:10,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 03:43:10,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 03:43:10,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 03:43:10,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 03:43:10,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 03:43:10,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 03:43:10,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 03:43:10,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 03:43:10,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 03:43:10,651 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 03:43:10,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 03:43:10,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 03:43:10,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 03:43:10,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 03:43:10,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 03:43:10,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 03:43:10,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 03:43:10,653 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 03:43:10,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 03:43:10,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 03:43:10,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 03:43:10,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 03:43:10,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:43:10,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 03:43:10,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 03:43:10,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 03:43:10,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 03:43:10,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 03:43:10,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 03:43:10,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 03:43:10,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 03:43:10,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 03:43:10,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eb3f0f7fbd0ab57546a0ac02256a38ed05a9424bb7a81ac298c225eddd7bc79 [2021-11-04 03:43:10,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 03:43:10,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 03:43:10,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 03:43:10,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 03:43:10,864 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 03:43:10,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-04 03:43:10,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26afba379/1ce80bbd4038450faf893d2aa0632df1/FLAGa2b52876a [2021-11-04 03:43:11,459 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 03:43:11,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-04 03:43:11,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26afba379/1ce80bbd4038450faf893d2aa0632df1/FLAGa2b52876a [2021-11-04 03:43:11,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26afba379/1ce80bbd4038450faf893d2aa0632df1 [2021-11-04 03:43:11,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 03:43:11,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 03:43:11,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 03:43:11,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 03:43:11,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 03:43:11,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:43:11" (1/1) ... [2021-11-04 03:43:11,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245e347e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:11, skipping insertion in model container [2021-11-04 03:43:11,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:43:11" (1/1) ... [2021-11-04 03:43:11,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 03:43:11,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 03:43:12,251 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2021-11-04 03:43:12,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:43:12,812 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 03:43:12,882 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i[158290,158303] [2021-11-04 03:43:13,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:43:13,179 INFO L208 MainTranslator]: Completed translation [2021-11-04 03:43:13,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13 WrapperNode [2021-11-04 03:43:13,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 03:43:13,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 03:43:13,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 03:43:13,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 03:43:13,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:13,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:13,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 03:43:13,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 03:43:13,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 03:43:13,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 03:43:13,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:13,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:14,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:14,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:14,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:14,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:14,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:14,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 03:43:14,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 03:43:14,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 03:43:14,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 03:43:14,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (1/1) ... [2021-11-04 03:43:14,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:43:14,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:43:14,945 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) [2021-11-04 03:43:14,962 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 [2021-11-04 03:43:14,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 03:43:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 03:43:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 03:43:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 03:43:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2021-11-04 03:43:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-04 03:43:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 03:43:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 03:43:14,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 03:43:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 03:43:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 03:43:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2021-11-04 03:43:14,991 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2021-11-04 03:43:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 03:43:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2021-11-04 03:43:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 03:43:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 03:43:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 03:43:14,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 03:43:14,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 03:43:23,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 03:43:23,851 INFO L299 CfgBuilder]: Removed 4671 assume(true) statements. [2021-11-04 03:43:23,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:43:23 BoogieIcfgContainer [2021-11-04 03:43:23,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 03:43:23,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 03:43:23,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 03:43:23,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 03:43:23,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:43:11" (1/3) ... [2021-11-04 03:43:23,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4561e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:43:23, skipping insertion in model container [2021-11-04 03:43:23,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:43:13" (2/3) ... [2021-11-04 03:43:23,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f4561e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:43:23, skipping insertion in model container [2021-11-04 03:43:23,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:43:23" (3/3) ... [2021-11-04 03:43:23,868 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--usb--smsc95xx.ko-entry_point.cil.out.i [2021-11-04 03:43:23,871 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 03:43:23,871 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-04 03:43:23,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 03:43:23,926 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 [2021-11-04 03:43:23,927 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-04 03:43:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 7107 states, 7099 states have (on average 1.449359064656994) internal successors, (10289), 7106 states have internal predecessors, (10289), 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) [2021-11-04 03:43:24,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-04 03:43:24,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:43:24,008 INFO L514 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] [2021-11-04 03:43:24,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 03:43:24,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:43:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1203932107, now seen corresponding path program 1 times [2021-11-04 03:43:24,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:43:24,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377641648] [2021-11-04 03:43:24,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:43:24,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:43:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:43:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:43:24,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:43:24,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377641648] [2021-11-04 03:43:24,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377641648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:43:24,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:43:24,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:43:24,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752084294] [2021-11-04 03:43:24,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:43:24,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:43:24,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:43:24,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:43:24,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:43:24,553 INFO L87 Difference]: Start difference. First operand has 7107 states, 7099 states have (on average 1.449359064656994) internal successors, (10289), 7106 states have internal predecessors, (10289), 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 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-04 03:43:26,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:30,309 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:53,289 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:55,076 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:57,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:43:59,694 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:02,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:44:57,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:44:57,443 INFO L93 Difference]: Finished difference Result 14211 states and 20575 transitions. [2021-11-04 03:44:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:44:57,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40 [2021-11-04 03:44:57,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:44:57,479 INFO L225 Difference]: With dead ends: 14211 [2021-11-04 03:44:57,479 INFO L226 Difference]: Without dead ends: 6771 [2021-11-04 03:44:57,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.17ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:57,494 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 0 mSDsluCounter, 10223 mSDsCounter, 0 mSdLazyCounter, 19811 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87215.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 19818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 144.21ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19811 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91470.03ms IncrementalHoareTripleChecker+Time [2021-11-04 03:44:57,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 668 Invalid, 19818 Unknown, 0 Unchecked, 144.21ms Time], IncrementalHoareTripleChecker [2 Valid, 19811 Invalid, 5 Unknown, 0 Unchecked, 91470.03ms Time] [2021-11-04 03:44:57,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2021-11-04 03:44:57,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6771. [2021-11-04 03:44:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6771 states, 6764 states have (on average 1.4155824955647547) internal successors, (9575), 6770 states have internal predecessors, (9575), 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) [2021-11-04 03:44:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6771 states to 6771 states and 9575 transitions. [2021-11-04 03:44:57,671 INFO L78 Accepts]: Start accepts. Automaton has 6771 states and 9575 transitions. Word has length 40 [2021-11-04 03:44:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:44:57,672 INFO L470 AbstractCegarLoop]: Abstraction has 6771 states and 9575 transitions. [2021-11-04 03:44:57,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2021-11-04 03:44:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 6771 states and 9575 transitions. [2021-11-04 03:44:57,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-04 03:44:57,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:44:57,679 INFO L514 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] [2021-11-04 03:44:57,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 03:44:57,680 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 03:44:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:44:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash -588484349, now seen corresponding path program 1 times [2021-11-04 03:44:57,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:44:57,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456443103] [2021-11-04 03:44:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:44:57,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:44:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:44:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:44:57,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:44:57,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456443103] [2021-11-04 03:44:57,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456443103] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:44:57,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:44:57,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:44:57,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206573223] [2021-11-04 03:44:57,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:44:57,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:44:57,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:44:57,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:44:57,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:44:57,940 INFO L87 Difference]: Start difference. First operand 6771 states and 9575 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-04 03:45:00,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:27,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:30,444 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:33,176 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:35,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:45:37,271 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:46:30,282 INFO L93 Difference]: Finished difference Result 13488 states and 19087 transitions. [2021-11-04 03:46:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:46:30,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2021-11-04 03:46:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:46:30,327 INFO L225 Difference]: With dead ends: 13488 [2021-11-04 03:46:30,328 INFO L226 Difference]: Without dead ends: 6774 [2021-11-04 03:46:30,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.89ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:46:30,354 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 9551 mSDsCounter, 0 mSdLazyCounter, 19134 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87041.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 130.21ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19134 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91239.03ms IncrementalHoareTripleChecker+Time [2021-11-04 03:46:30,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 19143 Unknown, 0 Unchecked, 130.21ms Time], IncrementalHoareTripleChecker [4 Valid, 19134 Invalid, 5 Unknown, 0 Unchecked, 91239.03ms Time] [2021-11-04 03:46:30,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6774 states. [2021-11-04 03:46:30,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6774 to 6774. [2021-11-04 03:46:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6774 states, 6767 states have (on average 1.4153982562435348) internal successors, (9578), 6773 states have internal predecessors, (9578), 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) [2021-11-04 03:46:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6774 states to 6774 states and 9578 transitions. [2021-11-04 03:46:30,485 INFO L78 Accepts]: Start accepts. Automaton has 6774 states and 9578 transitions. Word has length 42 [2021-11-04 03:46:30,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:46:30,486 INFO L470 AbstractCegarLoop]: Abstraction has 6774 states and 9578 transitions. [2021-11-04 03:46:30,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2021-11-04 03:46:30,486 INFO L276 IsEmpty]: Start isEmpty. Operand 6774 states and 9578 transitions. [2021-11-04 03:46:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-04 03:46:30,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:46:30,489 INFO L514 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] [2021-11-04 03:46:30,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 03:46:30,490 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 03:46:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:46:30,490 INFO L85 PathProgramCache]: Analyzing trace with hash -365845251, now seen corresponding path program 1 times [2021-11-04 03:46:30,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:46:30,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498720175] [2021-11-04 03:46:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:46:30,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:46:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:46:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 03:46:30,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:46:30,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498720175] [2021-11-04 03:46:30,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498720175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:46:30,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:46:30,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:46:30,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551868643] [2021-11-04 03:46:30,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:46:30,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:46:30,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:46:30,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:46:30,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:46:30,729 INFO L87 Difference]: Start difference. First operand 6774 states and 9578 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-04 03:46:32,776 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:35,144 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:36,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:47,278 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:48,621 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:57,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:46:59,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:04,726 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:47:07,134 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:48:11,959 INFO L93 Difference]: Finished difference Result 20120 states and 28497 transitions. [2021-11-04 03:48:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:48:11,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2021-11-04 03:48:11,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:48:12,039 INFO L225 Difference]: With dead ends: 20120 [2021-11-04 03:48:12,040 INFO L226 Difference]: Without dead ends: 13408 [2021-11-04 03:48:12,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.48ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:48:12,056 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9412 mSDsluCounter, 9548 mSDsCounter, 0 mSdLazyCounter, 19123 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94324.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9412 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 120.77ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19123 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99642.30ms IncrementalHoareTripleChecker+Time [2021-11-04 03:48:12,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9412 Valid, 0 Invalid, 19132 Unknown, 0 Unchecked, 120.77ms Time], IncrementalHoareTripleChecker [3 Valid, 19123 Invalid, 6 Unknown, 0 Unchecked, 99642.30ms Time] [2021-11-04 03:48:12,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2021-11-04 03:48:12,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 13404. [2021-11-04 03:48:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13404 states, 13397 states have (on average 1.417406882137792) internal successors, (18989), 13403 states have internal predecessors, (18989), 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) [2021-11-04 03:48:12,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13404 states to 13404 states and 18989 transitions. [2021-11-04 03:48:12,409 INFO L78 Accepts]: Start accepts. Automaton has 13404 states and 18989 transitions. Word has length 43 [2021-11-04 03:48:12,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:48:12,409 INFO L470 AbstractCegarLoop]: Abstraction has 13404 states and 18989 transitions. [2021-11-04 03:48:12,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2021-11-04 03:48:12,410 INFO L276 IsEmpty]: Start isEmpty. Operand 13404 states and 18989 transitions. [2021-11-04 03:48:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-04 03:48:12,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:48:12,411 INFO L514 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] [2021-11-04 03:48:12,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 03:48:12,411 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 03:48:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:48:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash 472623201, now seen corresponding path program 1 times [2021-11-04 03:48:12,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:48:12,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454822888] [2021-11-04 03:48:12,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:48:12,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:48:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:48:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-04 03:48:12,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:48:12,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454822888] [2021-11-04 03:48:12,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454822888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:48:12,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:48:12,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:48:12,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081797584] [2021-11-04 03:48:12,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:48:12,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:48:12,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:48:12,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:48:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:48:12,637 INFO L87 Difference]: Start difference. First operand 13404 states and 18989 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-04 03:48:14,689 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:24,426 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:34,391 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:37,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:48:42,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:49:45,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:49:45,867 INFO L93 Difference]: Finished difference Result 32122 states and 45548 transitions. [2021-11-04 03:49:45,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:49:45,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-04 03:49:45,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:49:45,916 INFO L225 Difference]: With dead ends: 32122 [2021-11-04 03:49:45,916 INFO L226 Difference]: Without dead ends: 18780 [2021-11-04 03:49:45,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:49:45,932 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3826 mSDsluCounter, 9523 mSDsCounter, 0 mSdLazyCounter, 19141 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87322.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3826 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 90.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19141 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91933.20ms IncrementalHoareTripleChecker+Time [2021-11-04 03:49:45,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3826 Valid, 0 Invalid, 19146 Unknown, 0 Unchecked, 90.77ms Time], IncrementalHoareTripleChecker [1 Valid, 19141 Invalid, 4 Unknown, 0 Unchecked, 91933.20ms Time] [2021-11-04 03:49:45,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18780 states. [2021-11-04 03:49:46,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18780 to 18763. [2021-11-04 03:49:46,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18763 states, 18756 states have (on average 1.4190658989123481) internal successors, (26616), 18762 states have internal predecessors, (26616), 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) [2021-11-04 03:49:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18763 states to 18763 states and 26616 transitions. [2021-11-04 03:49:46,203 INFO L78 Accepts]: Start accepts. Automaton has 18763 states and 26616 transitions. Word has length 48 [2021-11-04 03:49:46,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:49:46,205 INFO L470 AbstractCegarLoop]: Abstraction has 18763 states and 26616 transitions. [2021-11-04 03:49:46,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-04 03:49:46,205 INFO L276 IsEmpty]: Start isEmpty. Operand 18763 states and 26616 transitions. [2021-11-04 03:49:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-04 03:49:46,206 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:49:46,206 INFO L514 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] [2021-11-04 03:49:46,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 03:49:46,206 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 03:49:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:49:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash 615270734, now seen corresponding path program 1 times [2021-11-04 03:49:46,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:49:46,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142770770] [2021-11-04 03:49:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:49:46,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:49:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:49:46,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:49:46,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:49:46,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142770770] [2021-11-04 03:49:46,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142770770] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:49:46,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424799647] [2021-11-04 03:49:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:49:46,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:49:46,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:49:46,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:49:46,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-04 03:49:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:49:47,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 3074 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-04 03:49:47,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-04 03:49:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:49:48,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-04 03:49:48,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 03:49:48,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424799647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-04 03:49:48,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-04 03:49:48,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-04 03:49:48,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093627882] [2021-11-04 03:49:48,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-04 03:49:48,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 03:49:48,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:49:48,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 03:49:48,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:49:48,381 INFO L87 Difference]: Start difference. First operand 18763 states and 26616 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2021-11-04 03:49:50,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:07,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:29,551 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:32,890 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:36,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:50:39,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:52:01,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:52:01,738 INFO L93 Difference]: Finished difference Result 37520 states and 53264 transitions. [2021-11-04 03:52:01,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-04 03:52:01,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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 50 [2021-11-04 03:52:01,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:52:01,795 INFO L225 Difference]: With dead ends: 37520 [2021-11-04 03:52:01,795 INFO L226 Difference]: Without dead ends: 18812 [2021-11-04 03:52:01,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 231.77ms TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2021-11-04 03:52:01,813 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 19100 mSDsCounter, 0 mSdLazyCounter, 28716 mSolverCounterSat, 50 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 126271.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 151.56ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 28716 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131984.77ms IncrementalHoareTripleChecker+Time [2021-11-04 03:52:01,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 28771 Unknown, 0 Unchecked, 151.56ms Time], IncrementalHoareTripleChecker [50 Valid, 28716 Invalid, 5 Unknown, 0 Unchecked, 131984.77ms Time] [2021-11-04 03:52:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18812 states. [2021-11-04 03:52:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18812 to 18812. [2021-11-04 03:52:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18812 states, 18805 states have (on average 1.4179739431002394) internal successors, (26665), 18811 states have internal predecessors, (26665), 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) [2021-11-04 03:52:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18812 states to 18812 states and 26665 transitions. [2021-11-04 03:52:02,097 INFO L78 Accepts]: Start accepts. Automaton has 18812 states and 26665 transitions. Word has length 50 [2021-11-04 03:52:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:52:02,097 INFO L470 AbstractCegarLoop]: Abstraction has 18812 states and 26665 transitions. [2021-11-04 03:52:02,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 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) [2021-11-04 03:52:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 18812 states and 26665 transitions. [2021-11-04 03:52:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-04 03:52:02,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:52:02,099 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:52:02,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-04 03:52:02,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:52:02,315 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-04 03:52:02,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:52:02,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2142754496, now seen corresponding path program 2 times [2021-11-04 03:52:02,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:52:02,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588837466] [2021-11-04 03:52:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:52:02,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:52:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:52:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-04 03:52:02,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:52:02,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588837466] [2021-11-04 03:52:02,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588837466] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-04 03:52:02,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802996985] [2021-11-04 03:52:02,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-04 03:52:02,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-04 03:52:02,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:52:02,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-04 03:52:02,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Killed by 15