./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.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 e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 19:32:50,572 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 19:32:50,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 19:32:50,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 19:32:50,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 19:32:50,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 19:32:50,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 19:32:50,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 19:32:50,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 19:32:50,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 19:32:50,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 19:32:50,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 19:32:50,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 19:32:50,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 19:32:50,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 19:32:50,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 19:32:50,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 19:32:50,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 19:32:50,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 19:32:50,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 19:32:50,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 19:32:50,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 19:32:50,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 19:32:50,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 19:32:50,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 19:32:50,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 19:32:50,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 19:32:50,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 19:32:50,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 19:32:50,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 19:32:50,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 19:32:50,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 19:32:50,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 19:32:50,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 19:32:50,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 19:32:50,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 19:32:50,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 19:32:50,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 19:32:50,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 19:32:50,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 19:32:50,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 19:32:50,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 19:32:50,678 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 19:32:50,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 19:32:50,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 19:32:50,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 19:32:50,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 19:32:50,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 19:32:50,685 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 19:32:50,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 19:32:50,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 19:32:50,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 19:32:50,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 19:32:50,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 19:32:50,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 19:32:50,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 19:32:50,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 19:32:50,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 19:32:50,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 19:32:50,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 19:32:50,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 19:32:50,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:32:50,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 19:32:50,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 19:32:50,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 19:32:50,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 19:32:50,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 19:32:50,689 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 19:32:50,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 19:32:50,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 19:32:50,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 19:32:50,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2021-11-02 19:32:50,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 19:32:50,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 19:32:50,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 19:32:50,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 19:32:50,910 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 19:32:50,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-02 19:32:50,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82ca9dfd/6d814be3ad214af09363dce5b62e87c9/FLAGbc1eb2f93 [2021-11-02 19:32:51,554 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 19:32:51,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-02 19:32:51,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82ca9dfd/6d814be3ad214af09363dce5b62e87c9/FLAGbc1eb2f93 [2021-11-02 19:32:51,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f82ca9dfd/6d814be3ad214af09363dce5b62e87c9 [2021-11-02 19:32:51,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 19:32:51,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 19:32:51,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 19:32:51,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 19:32:51,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 19:32:51,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:32:51" (1/1) ... [2021-11-02 19:32:51,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42067692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:51, skipping insertion in model container [2021-11-02 19:32:51,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:32:51" (1/1) ... [2021-11-02 19:32:51,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 19:32:52,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 19:32:52,527 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-11-02 19:32:52,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:32:52,858 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 19:32:52,903 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-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-11-02 19:32:53,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 19:32:53,103 INFO L208 MainTranslator]: Completed translation [2021-11-02 19:32:53,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53 WrapperNode [2021-11-02 19:32:53,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 19:32:53,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 19:32:53,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 19:32:53,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 19:32:53,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:53,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:54,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 19:32:54,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 19:32:54,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 19:32:54,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 19:32:54,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:54,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:54,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:54,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:55,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:55,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:55,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:55,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 19:32:55,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 19:32:55,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 19:32:55,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 19:32:55,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (1/1) ... [2021-11-02 19:32:55,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 19:32:55,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 19:32:55,965 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) [2021-11-02 19:32:55,983 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 [2021-11-02 19:32:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 19:32:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 19:32:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-02 19:32:55,998 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-02 19:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 19:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 19:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 19:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 19:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 19:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 19:32:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 19:32:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-02 19:32:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-02 19:32:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 19:32:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-02 19:32:55,999 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-02 19:32:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 19:32:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 19:32:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-02 19:32:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 19:32:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-02 19:32:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-02 19:32:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-02 19:32:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-02 19:32:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-02 19:32:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 19:32:56,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 19:32:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 19:32:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 19:32:56,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 19:33:25,573 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 19:33:25,574 INFO L299 CfgBuilder]: Removed 14253 assume(true) statements. [2021-11-02 19:33:25,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:33:25 BoogieIcfgContainer [2021-11-02 19:33:25,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 19:33:25,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 19:33:25,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 19:33:25,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 19:33:25,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:32:51" (1/3) ... [2021-11-02 19:33:25,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ab6064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:33:25, skipping insertion in model container [2021-11-02 19:33:25,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:32:53" (2/3) ... [2021-11-02 19:33:25,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ab6064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:33:25, skipping insertion in model container [2021-11-02 19:33:25,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:33:25" (3/3) ... [2021-11-02 19:33:25,591 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-02 19:33:25,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 19:33:25,595 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-02 19:33:25,654 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 19:33:25,662 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 [2021-11-02 19:33:25,663 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-02 19:33:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 11954 states, 11918 states have (on average 1.4186105051183084) internal successors, (16907), 11937 states have internal predecessors, (16907), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-02 19:33:25,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 19:33:25,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:33:25,790 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] [2021-11-02 19:33:25,790 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:33:25,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:33:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1301554369, now seen corresponding path program 1 times [2021-11-02 19:33:25,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:33:25,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975805652] [2021-11-02 19:33:25,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:33:25,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:33:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:33:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:33:26,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:33:26,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975805652] [2021-11-02 19:33:26,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975805652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:33:26,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:33:26,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 19:33:26,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315117937] [2021-11-02 19:33:26,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:33:26,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:33:26,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:33:26,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:33:26,312 INFO L87 Difference]: Start difference. First operand has 11954 states, 11918 states have (on average 1.4186105051183084) internal successors, (16907), 11937 states have internal predecessors, (16907), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-02 19:33:28,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:33:57,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:33:57,533 INFO L93 Difference]: Finished difference Result 31641 states and 44017 transitions. [2021-11-02 19:33:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:33:57,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-11-02 19:33:57,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:33:57,631 INFO L225 Difference]: With dead ends: 31641 [2021-11-02 19:33:57,631 INFO L226 Difference]: Without dead ends: 19678 [2021-11-02 19:33:57,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.76ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:33:57,680 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 13331 mSDsluCounter, 13350 mSDsCounter, 0 mSdLazyCounter, 26761 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25766.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13331 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 26765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.01ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30324.26ms IncrementalHoareTripleChecker+Time [2021-11-02 19:33:57,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13331 Valid, 60 Invalid, 26765 Unknown, 0 Unchecked, 48.01ms Time], IncrementalHoareTripleChecker [3 Valid, 26761 Invalid, 1 Unknown, 0 Unchecked, 30324.26ms Time] [2021-11-02 19:33:57,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19678 states. [2021-11-02 19:33:58,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19678 to 19678. [2021-11-02 19:33:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19678 states, 19627 states have (on average 1.3569572527640494) internal successors, (26633), 19645 states have internal predecessors, (26633), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-02 19:33:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19678 states to 19678 states and 26673 transitions. [2021-11-02 19:33:58,153 INFO L78 Accepts]: Start accepts. Automaton has 19678 states and 26673 transitions. Word has length 24 [2021-11-02 19:33:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:33:58,153 INFO L470 AbstractCegarLoop]: Abstraction has 19678 states and 26673 transitions. [2021-11-02 19:33:58,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-11-02 19:33:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 19678 states and 26673 transitions. [2021-11-02 19:33:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 19:33:58,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:33:58,161 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] [2021-11-02 19:33:58,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 19:33:58,162 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:33:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:33:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1536576598, now seen corresponding path program 1 times [2021-11-02 19:33:58,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:33:58,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963584820] [2021-11-02 19:33:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:33:58,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:33:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:33:58,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:33:58,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:33:58,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963584820] [2021-11-02 19:33:58,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963584820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:33:58,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:33:58,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 19:33:58,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572612017] [2021-11-02 19:33:58,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:33:58,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:33:58,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:33:58,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:33:58,369 INFO L87 Difference]: Start difference. First operand 19678 states and 26673 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-02 19:34:00,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:34:43,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:34:43,918 INFO L93 Difference]: Finished difference Result 39256 states and 53239 transitions. [2021-11-02 19:34:43,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:34:43,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2021-11-02 19:34:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:34:44,050 INFO L225 Difference]: With dead ends: 39256 [2021-11-02 19:34:44,050 INFO L226 Difference]: Without dead ends: 39224 [2021-11-02 19:34:44,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:34:44,071 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13386 mSDsluCounter, 13311 mSDsCounter, 0 mSdLazyCounter, 26704 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38308.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13386 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.86ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 26704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44359.84ms IncrementalHoareTripleChecker+Time [2021-11-02 19:34:44,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13386 Valid, 50 Invalid, 26720 Unknown, 0 Unchecked, 66.86ms Time], IncrementalHoareTripleChecker [15 Valid, 26704 Invalid, 1 Unknown, 0 Unchecked, 44359.84ms Time] [2021-11-02 19:34:44,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39224 states. [2021-11-02 19:34:44,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39224 to 39220. [2021-11-02 19:34:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39220 states, 39139 states have (on average 1.357290681928511) internal successors, (53123), 39155 states have internal predecessors, (53123), 40 states have call successors, (40), 24 states have call predecessors, (40), 24 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-02 19:34:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39220 states to 39220 states and 53203 transitions. [2021-11-02 19:34:44,997 INFO L78 Accepts]: Start accepts. Automaton has 39220 states and 53203 transitions. Word has length 27 [2021-11-02 19:34:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:34:44,998 INFO L470 AbstractCegarLoop]: Abstraction has 39220 states and 53203 transitions. [2021-11-02 19:34:44,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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) [2021-11-02 19:34:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 39220 states and 53203 transitions. [2021-11-02 19:34:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 19:34:45,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:34:45,000 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] [2021-11-02 19:34:45,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 19:34:45,000 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:34:45,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:34:45,001 INFO L85 PathProgramCache]: Analyzing trace with hash 389265743, now seen corresponding path program 1 times [2021-11-02 19:34:45,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:34:45,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255756653] [2021-11-02 19:34:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:34:45,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:34:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:34:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:34:45,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:34:45,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255756653] [2021-11-02 19:34:45,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255756653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:34:45,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:34:45,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 19:34:45,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265126646] [2021-11-02 19:34:45,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:34:45,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:34:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:34:45,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:34:45,186 INFO L87 Difference]: Start difference. First operand 39220 states and 53203 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-11-02 19:34:47,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:35:43,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:35:43,293 INFO L93 Difference]: Finished difference Result 117512 states and 159453 transitions. [2021-11-02 19:35:43,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:35:43,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-11-02 19:35:43,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:35:43,535 INFO L225 Difference]: With dead ends: 117512 [2021-11-02 19:35:43,536 INFO L226 Difference]: Without dead ends: 78349 [2021-11-02 19:35:43,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.23ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:35:43,632 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13389 mSDsluCounter, 13326 mSDsCounter, 0 mSdLazyCounter, 26720 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47773.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 70.23ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56104.07ms IncrementalHoareTripleChecker+Time [2021-11-02 19:35:43,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 50 Invalid, 26730 Unknown, 0 Unchecked, 70.23ms Time], IncrementalHoareTripleChecker [9 Valid, 26720 Invalid, 1 Unknown, 0 Unchecked, 56104.07ms Time] [2021-11-02 19:35:43,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78349 states. [2021-11-02 19:35:45,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78349 to 78329. [2021-11-02 19:35:45,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78329 states, 78184 states have (on average 1.357528394556431) internal successors, (106137), 78200 states have internal predecessors, (106137), 80 states have call successors, (80), 48 states have call predecessors, (80), 48 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-02 19:35:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78329 states to 78329 states and 106297 transitions. [2021-11-02 19:35:45,317 INFO L78 Accepts]: Start accepts. Automaton has 78329 states and 106297 transitions. Word has length 28 [2021-11-02 19:35:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:35:45,317 INFO L470 AbstractCegarLoop]: Abstraction has 78329 states and 106297 transitions. [2021-11-02 19:35:45,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2021-11-02 19:35:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 78329 states and 106297 transitions. [2021-11-02 19:35:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-02 19:35:45,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:35:45,323 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] [2021-11-02 19:35:45,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 19:35:45,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:35:45,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:35:45,324 INFO L85 PathProgramCache]: Analyzing trace with hash -513397760, now seen corresponding path program 1 times [2021-11-02 19:35:45,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:35:45,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714620144] [2021-11-02 19:35:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:35:45,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:35:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:35:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:35:45,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:35:45,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714620144] [2021-11-02 19:35:45,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714620144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:35:45,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:35:45,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 19:35:45,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376531457] [2021-11-02 19:35:45,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 19:35:45,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:35:45,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 19:35:45,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:35:45,513 INFO L87 Difference]: Start difference. First operand 78329 states and 106297 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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) [2021-11-02 19:35:47,559 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 [] [2021-11-02 19:37:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:37:02,763 INFO L93 Difference]: Finished difference Result 234856 states and 318752 transitions. [2021-11-02 19:37:02,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 19:37:02,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2021-11-02 19:37:02,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:37:03,181 INFO L225 Difference]: With dead ends: 234856 [2021-11-02 19:37:03,182 INFO L226 Difference]: Without dead ends: 156582 [2021-11-02 19:37:03,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 19:37:03,311 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13382 mSDsluCounter, 13345 mSDsCounter, 0 mSdLazyCounter, 26737 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60570.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13382 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 91.35ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73938.66ms IncrementalHoareTripleChecker+Time [2021-11-02 19:37:03,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13382 Valid, 50 Invalid, 26745 Unknown, 0 Unchecked, 91.35ms Time], IncrementalHoareTripleChecker [7 Valid, 26737 Invalid, 1 Unknown, 0 Unchecked, 73938.66ms Time] [2021-11-02 19:37:03,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156582 states. [2021-11-02 19:37:05,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156582 to 156545. [2021-11-02 19:37:06,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156545 states, 156272 states have (on average 1.3576456434933961) internal successors, (212162), 156288 states have internal predecessors, (212162), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-02 19:37:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156545 states to 156545 states and 212482 transitions. [2021-11-02 19:37:06,767 INFO L78 Accepts]: Start accepts. Automaton has 156545 states and 212482 transitions. Word has length 37 [2021-11-02 19:37:06,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:37:06,767 INFO L470 AbstractCegarLoop]: Abstraction has 156545 states and 212482 transitions. [2021-11-02 19:37:06,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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) [2021-11-02 19:37:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 156545 states and 212482 transitions. [2021-11-02 19:37:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-02 19:37:06,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:37:06,770 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] [2021-11-02 19:37:06,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 19:37:06,770 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:37:06,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:37:06,770 INFO L85 PathProgramCache]: Analyzing trace with hash 666285678, now seen corresponding path program 1 times [2021-11-02 19:37:06,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:37:06,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544899782] [2021-11-02 19:37:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:37:06,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:37:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:37:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:37:07,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:37:07,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544899782] [2021-11-02 19:37:07,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544899782] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:37:07,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:37:07,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 19:37:07,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122633267] [2021-11-02 19:37:07,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 19:37:07,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:37:07,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 19:37:07,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 19:37:07,706 INFO L87 Difference]: Start difference. First operand 156545 states and 212482 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 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) [2021-11-02 19:37:09,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 19:40:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 19:40:28,165 INFO L93 Difference]: Finished difference Result 544113 states and 737675 transitions. [2021-11-02 19:40:28,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-02 19:40:28,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 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 39 [2021-11-02 19:40:28,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 19:40:29,336 INFO L225 Difference]: With dead ends: 544113 [2021-11-02 19:40:29,336 INFO L226 Difference]: Without dead ends: 387625 [2021-11-02 19:40:29,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 237.38ms TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-02 19:40:29,575 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 39479 mSDsluCounter, 113140 mSDsCounter, 0 mSdLazyCounter, 132329 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161821.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39481 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 132361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 472.26ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 132329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 191311.32ms IncrementalHoareTripleChecker+Time [2021-11-02 19:40:29,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39481 Valid, 179 Invalid, 132361 Unknown, 0 Unchecked, 472.26ms Time], IncrementalHoareTripleChecker [31 Valid, 132329 Invalid, 1 Unknown, 0 Unchecked, 191311.32ms Time] [2021-11-02 19:40:29,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387625 states. [2021-11-02 19:40:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387625 to 156585. [2021-11-02 19:40:34,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156585 states, 156312 states have (on average 1.357592507293106) internal successors, (212208), 156328 states have internal predecessors, (212208), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-02 19:40:34,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156585 states to 156585 states and 212528 transitions. [2021-11-02 19:40:34,799 INFO L78 Accepts]: Start accepts. Automaton has 156585 states and 212528 transitions. Word has length 39 [2021-11-02 19:40:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 19:40:34,800 INFO L470 AbstractCegarLoop]: Abstraction has 156585 states and 212528 transitions. [2021-11-02 19:40:34,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 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) [2021-11-02 19:40:34,800 INFO L276 IsEmpty]: Start isEmpty. Operand 156585 states and 212528 transitions. [2021-11-02 19:40:34,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 19:40:34,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 19:40:34,802 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] [2021-11-02 19:40:34,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 19:40:34,803 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-02 19:40:34,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 19:40:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash -395841258, now seen corresponding path program 1 times [2021-11-02 19:40:34,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 19:40:34,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851548945] [2021-11-02 19:40:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 19:40:34,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 19:40:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 19:40:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 19:40:36,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 19:40:36,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851548945] [2021-11-02 19:40:36,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851548945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 19:40:36,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 19:40:36,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-02 19:40:36,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132430804] [2021-11-02 19:40:36,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 19:40:36,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 19:40:36,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 19:40:36,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-02 19:40:36,754 INFO L87 Difference]: Start difference. First operand 156585 states and 212528 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2021-11-02 19:40:38,799 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15