./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--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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--usb--class--cdc-acm.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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:56:46,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:56:46,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:56:46,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:56:46,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:56:46,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:56:46,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:56:46,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:56:46,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:56:46,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:56:46,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:56:46,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:56:46,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:56:46,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:56:46,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:56:46,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:56:46,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:56:46,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:56:46,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:56:46,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:56:46,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:56:46,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:56:46,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:56:46,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:56:46,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:56:46,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:56:46,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:56:46,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:56:46,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:56:46,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:56:46,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:56:46,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:56:46,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:56:46,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:56:46,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:56:46,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:56:46,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:56:46,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:56:46,447 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:56:46,448 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:56:46,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:56:46,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:56:46,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:56:46,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:56:46,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:56:46,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:56:46,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:56:46,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:56:46,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:56:46,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:56:46,475 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:56:46,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:56:46,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:56:46,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:56:46,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:56:46,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:56:46,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:56:46,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:56:46,477 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:56:46,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:56:46,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:56:46,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:56:46,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:56:46,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:56:46,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:56:46,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:56:46,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:56:46,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:56:46,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:56:46,479 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:56:46,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:56:46,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:56:46,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:56:46,480 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2021-12-16 03:56:46,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:56:46,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:56:46,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:56:46,705 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:56:46,708 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:56:46,709 INFO L432 ainManager$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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-12-16 03:56:46,777 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b23f1d57a/1bbb02d47b32454eb0edf145b6a2a683/FLAG6ee641b37 [2021-12-16 03:56:47,370 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:56:47,371 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--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-12-16 03:56:47,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b23f1d57a/1bbb02d47b32454eb0edf145b6a2a683/FLAG6ee641b37 [2021-12-16 03:56:47,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b23f1d57a/1bbb02d47b32454eb0edf145b6a2a683 [2021-12-16 03:56:47,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:56:47,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:56:47,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:56:47,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:56:47,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:56:47,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:56:47" (1/1) ... [2021-12-16 03:56:47,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bb5813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:47, skipping insertion in model container [2021-12-16 03:56:47,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:56:47" (1/1) ... [2021-12-16 03:56:47,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:56:47,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:56:48,531 WARN L230 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-12-16 03:56:48,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:56:49,029 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:56:49,106 WARN L230 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--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-12-16 03:56:49,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:56:49,361 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:56:49,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49 WrapperNode [2021-12-16 03:56:49,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:56:49,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:56:49,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:56:49,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:56:49,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,590 INFO L137 Inliner]: procedures = 245, calls = 3306, calls flagged for inlining = 118, calls inlined = 118, statements flattened = 6412 [2021-12-16 03:56:49,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:56:49,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:56:49,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:56:49,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:56:49,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:56:49,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:56:49,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:56:49,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:56:49,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (1/1) ... [2021-12-16 03:56:49,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:56:49,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:56:49,855 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) [2021-12-16 03:56:49,873 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 [2021-12-16 03:56:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2021-12-16 03:56:49,884 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2021-12-16 03:56:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2021-12-16 03:56:49,884 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2021-12-16 03:56:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_18 [2021-12-16 03:56:49,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_18 [2021-12-16 03:56:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-16 03:56:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 03:56:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-16 03:56:49,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-16 03:56:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_destruct [2021-12-16 03:56:49,885 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_destruct [2021-12-16 03:56:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-16 03:56:49,885 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-16 03:56:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-16 03:56:49,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-16 03:56:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_22 [2021-12-16 03:56:49,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_22 [2021-12-16 03:56:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2021-12-16 03:56:49,886 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2021-12-16 03:56:49,886 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-16 03:56:49,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-16 03:56:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-16 03:56:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-16 03:56:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-16 03:56:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-16 03:56:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2021-12-16 03:56:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2021-12-16 03:56:49,887 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-16 03:56:49,887 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-16 03:56:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-16 03:56:49,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-16 03:56:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-16 03:56:49,888 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-16 03:56:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-16 03:56:49,888 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-16 03:56:49,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 03:56:49,889 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 03:56:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:56:49,889 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:56:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-16 03:56:49,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-16 03:56:49,889 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-16 03:56:49,889 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-16 03:56:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2021-12-16 03:56:49,890 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2021-12-16 03:56:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2021-12-16 03:56:49,890 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2021-12-16 03:56:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2021-12-16 03:56:49,890 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2021-12-16 03:56:49,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:56:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-16 03:56:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2021-12-16 03:56:49,891 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2021-12-16 03:56:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-16 03:56:49,891 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-16 03:56:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:56:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2021-12-16 03:56:49,892 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2021-12-16 03:56:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-12-16 03:56:49,893 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-12-16 03:56:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-16 03:56:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 03:56:49,893 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 03:56:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-12-16 03:56:49,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-12-16 03:56:49,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:56:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:56:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-16 03:56:49,894 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-16 03:56:49,894 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-12-16 03:56:49,894 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-12-16 03:56:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-16 03:56:49,895 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-16 03:56:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-16 03:56:49,895 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-16 03:56:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-16 03:56:49,895 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-16 03:56:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2021-12-16 03:56:49,895 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2021-12-16 03:56:49,895 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_shutdown [2021-12-16 03:56:49,896 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_shutdown [2021-12-16 03:56:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-12-16 03:56:49,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-12-16 03:56:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2021-12-16 03:56:49,896 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2021-12-16 03:56:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-16 03:56:49,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-16 03:56:49,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-16 03:56:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-16 03:56:49,897 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-16 03:56:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2021-12-16 03:56:49,897 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2021-12-16 03:56:49,897 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-16 03:56:49,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-16 03:56:49,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-16 03:56:49,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-12-16 03:56:49,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-12-16 03:56:49,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-12-16 03:56:49,898 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-12-16 03:56:49,899 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2021-12-16 03:56:49,899 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2021-12-16 03:56:49,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:56:49,899 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2021-12-16 03:56:49,899 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2021-12-16 03:56:49,899 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-16 03:56:49,900 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-16 03:56:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-16 03:56:49,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-16 03:56:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-16 03:56:49,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-16 03:56:49,900 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2021-12-16 03:56:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2021-12-16 03:56:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2021-12-16 03:56:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2021-12-16 03:56:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-16 03:56:49,901 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-16 03:56:49,901 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-16 03:56:49,902 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-16 03:56:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2021-12-16 03:56:49,904 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2021-12-16 03:56:49,904 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2021-12-16 03:56:49,904 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2021-12-16 03:56:49,905 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-16 03:56:49,905 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-16 03:56:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:56:49,906 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2021-12-16 03:56:49,906 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2021-12-16 03:56:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2021-12-16 03:56:49,908 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2021-12-16 03:56:49,908 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2021-12-16 03:56:49,909 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2021-12-16 03:56:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-16 03:56:49,909 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-16 03:56:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-16 03:56:49,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-16 03:56:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2021-12-16 03:56:49,909 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2021-12-16 03:56:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2021-12-16 03:56:49,909 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2021-12-16 03:56:49,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:56:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2021-12-16 03:56:49,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2021-12-16 03:56:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:56:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-16 03:56:49,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-16 03:56:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:56:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_17 [2021-12-16 03:56:49,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_17 [2021-12-16 03:56:49,910 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:56:49,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:56:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-16 03:56:49,911 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-16 03:56:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-12-16 03:56:49,911 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-12-16 03:56:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2021-12-16 03:56:49,911 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2021-12-16 03:56:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2021-12-16 03:56:49,911 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2021-12-16 03:56:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2021-12-16 03:56:49,912 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2021-12-16 03:56:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2021-12-16 03:56:49,912 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2021-12-16 03:56:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2021-12-16 03:56:49,912 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2021-12-16 03:56:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-16 03:56:49,912 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-16 03:56:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-16 03:56:49,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-16 03:56:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:56:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-16 03:56:49,913 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-16 03:56:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-16 03:56:49,913 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-16 03:56:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2021-12-16 03:56:49,913 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2021-12-16 03:56:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:56:49,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:56:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-12-16 03:56:49,913 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-12-16 03:56:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2021-12-16 03:56:49,914 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2021-12-16 03:56:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-16 03:56:49,914 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-16 03:56:50,460 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:56:50,462 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:56:50,615 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-16 03:56:51,037 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-16 03:56:55,936 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:56:55,958 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:56:55,959 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:56:55,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:56:55 BoogieIcfgContainer [2021-12-16 03:56:55,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:56:55,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:56:55,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:56:55,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:56:55,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:56:47" (1/3) ... [2021-12-16 03:56:55,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70566c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:56:55, skipping insertion in model container [2021-12-16 03:56:55,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:56:49" (2/3) ... [2021-12-16 03:56:55,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70566c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:56:55, skipping insertion in model container [2021-12-16 03:56:55,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:56:55" (3/3) ... [2021-12-16 03:56:55,969 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-12-16 03:56:55,973 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:56:55,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:56:56,024 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:56:56,031 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 [2021-12-16 03:56:56,032 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:56:56,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 1493 states, 1064 states have (on average 1.3449248120300752) internal successors, (1431), 1100 states have internal predecessors, (1431), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) [2021-12-16 03:56:56,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 03:56:56,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:56:56,095 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:56:56,096 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:56:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:56:56,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1074681228, now seen corresponding path program 1 times [2021-12-16 03:56:56,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:56:56,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082840209] [2021-12-16 03:56:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:56:56,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:56:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:56:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:56:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:56:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:56:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:56:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:56:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:56:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:56:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:56:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:56:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:56:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:56:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:56:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:56:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:56:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-16 03:56:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 03:56:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:56:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-16 03:56:56,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:56:56,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082840209] [2021-12-16 03:56:56,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082840209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:56:56,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:56:56,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:56:56,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322507319] [2021-12-16 03:56:56,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:56:56,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:56:56,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:56:56,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:56:56,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:56:56,859 INFO L87 Difference]: Start difference. First operand has 1493 states, 1064 states have (on average 1.3449248120300752) internal successors, (1431), 1100 states have internal predecessors, (1431), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:57:00,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:02,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:07,358 INFO L93 Difference]: Finished difference Result 4571 states and 6678 transitions. [2021-12-16 03:57:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:57:07,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 117 [2021-12-16 03:57:07,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:07,395 INFO L225 Difference]: With dead ends: 4571 [2021-12-16 03:57:07,395 INFO L226 Difference]: Without dead ends: 3049 [2021-12-16 03:57:07,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:57:07,407 INFO L933 BasicCegarLoop]: 2261 mSDtfsCounter, 3009 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 1677 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 6015 SdHoareTripleChecker+Invalid, 3735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1677 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:07,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3266 Valid, 6015 Invalid, 3735 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1677 Valid, 2056 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2021-12-16 03:57:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-12-16 03:57:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2862. [2021-12-16 03:57:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2862 states, 2063 states have (on average 1.3364032961706254) internal successors, (2757), 2104 states have internal predecessors, (2757), 638 states have call successors, (638), 161 states have call predecessors, (638), 160 states have return successors, (632), 616 states have call predecessors, (632), 632 states have call successors, (632) [2021-12-16 03:57:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 4027 transitions. [2021-12-16 03:57:07,605 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 4027 transitions. Word has length 117 [2021-12-16 03:57:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:07,607 INFO L470 AbstractCegarLoop]: Abstraction has 2862 states and 4027 transitions. [2021-12-16 03:57:07,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 03:57:07,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 4027 transitions. [2021-12-16 03:57:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-16 03:57:07,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:07,617 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:57:07,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:57:07,617 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:07,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1971538155, now seen corresponding path program 1 times [2021-12-16 03:57:07,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:07,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001102959] [2021-12-16 03:57:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:07,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:57:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:57:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:57:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:57:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:57:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:57:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:57:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:57:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:57:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:57:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:57:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:57:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:57:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:57:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-16 03:57:08,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:08,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001102959] [2021-12-16 03:57:08,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001102959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:08,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:08,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:57:08,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752763280] [2021-12-16 03:57:08,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:08,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:57:08,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:08,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:57:08,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:57:08,014 INFO L87 Difference]: Start difference. First operand 2862 states and 4027 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:57:11,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:13,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:21,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:22,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:22,951 INFO L93 Difference]: Finished difference Result 9103 states and 13201 transitions. [2021-12-16 03:57:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:57:22,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2021-12-16 03:57:22,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:22,985 INFO L225 Difference]: With dead ends: 9103 [2021-12-16 03:57:22,985 INFO L226 Difference]: Without dead ends: 6274 [2021-12-16 03:57:22,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:57:23,000 INFO L933 BasicCegarLoop]: 2372 mSDtfsCounter, 3138 mSDsluCounter, 5004 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 1794 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3389 SdHoareTripleChecker+Valid, 7376 SdHoareTripleChecker+Invalid, 4836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1794 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:23,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3389 Valid, 7376 Invalid, 4836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1794 Valid, 3039 Invalid, 3 Unknown, 0 Unchecked, 14.5s Time] [2021-12-16 03:57:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6274 states. [2021-12-16 03:57:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6274 to 5787. [2021-12-16 03:57:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5787 states, 4175 states have (on average 1.3348502994011977) internal successors, (5573), 4258 states have internal predecessors, (5573), 1273 states have call successors, (1273), 321 states have call predecessors, (1273), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2021-12-16 03:57:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 8233 transitions. [2021-12-16 03:57:23,232 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 8233 transitions. Word has length 129 [2021-12-16 03:57:23,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:23,233 INFO L470 AbstractCegarLoop]: Abstraction has 5787 states and 8233 transitions. [2021-12-16 03:57:23,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:57:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 8233 transitions. [2021-12-16 03:57:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:57:23,241 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:23,241 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:57:23,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:57:23,242 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:23,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:23,242 INFO L85 PathProgramCache]: Analyzing trace with hash -988843388, now seen corresponding path program 1 times [2021-12-16 03:57:23,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:23,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003868018] [2021-12-16 03:57:23,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:23,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:57:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:57:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:57:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:57:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:57:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:57:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:57:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:57:23,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:57:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:57:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:57:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:57:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:57:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:57:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-16 03:57:23,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:23,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003868018] [2021-12-16 03:57:23,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003868018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:23,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:23,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:57:23,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301407344] [2021-12-16 03:57:23,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:23,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:57:23,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:23,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:57:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:57:23,726 INFO L87 Difference]: Start difference. First operand 5787 states and 8233 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:57:26,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:29,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:31,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:35,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:35,260 INFO L93 Difference]: Finished difference Result 6285 states and 9087 transitions. [2021-12-16 03:57:35,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:57:35,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2021-12-16 03:57:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:35,295 INFO L225 Difference]: With dead ends: 6285 [2021-12-16 03:57:35,295 INFO L226 Difference]: Without dead ends: 6282 [2021-12-16 03:57:35,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:57:35,303 INFO L933 BasicCegarLoop]: 1945 mSDtfsCounter, 2457 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 1044 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2710 SdHoareTripleChecker+Valid, 4908 SdHoareTripleChecker+Invalid, 2720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:35,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2710 Valid, 4908 Invalid, 2720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1044 Valid, 1673 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2021-12-16 03:57:35,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-12-16 03:57:35,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 5794. [2021-12-16 03:57:35,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5794 states, 4179 states have (on average 1.334290500119646) internal successors, (5576), 4261 states have internal predecessors, (5576), 1272 states have call successors, (1272), 325 states have call predecessors, (1272), 342 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2021-12-16 03:57:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5794 states to 5794 states and 8235 transitions. [2021-12-16 03:57:35,490 INFO L78 Accepts]: Start accepts. Automaton has 5794 states and 8235 transitions. Word has length 130 [2021-12-16 03:57:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:35,491 INFO L470 AbstractCegarLoop]: Abstraction has 5794 states and 8235 transitions. [2021-12-16 03:57:35,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:57:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5794 states and 8235 transitions. [2021-12-16 03:57:35,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-16 03:57:35,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:35,494 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:57:35,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:57:35,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:35,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash -590071816, now seen corresponding path program 1 times [2021-12-16 03:57:35,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:35,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656767205] [2021-12-16 03:57:35,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:35,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:57:35,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:57:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:57:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:57:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:57:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:57:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:57:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:57:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:57:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:57:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:57:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:57:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:57:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:57:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-16 03:57:35,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:35,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656767205] [2021-12-16 03:57:35,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656767205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:35,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:35,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:57:35,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738484150] [2021-12-16 03:57:35,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:35,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:57:35,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:35,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:57:35,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:57:35,878 INFO L87 Difference]: Start difference. First operand 5794 states and 8235 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:57:39,233 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:41,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:45,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:57:45,139 INFO L93 Difference]: Finished difference Result 6272 states and 9069 transitions. [2021-12-16 03:57:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:57:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2021-12-16 03:57:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:57:45,164 INFO L225 Difference]: With dead ends: 6272 [2021-12-16 03:57:45,165 INFO L226 Difference]: Without dead ends: 6269 [2021-12-16 03:57:45,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:57:45,168 INFO L933 BasicCegarLoop]: 1944 mSDtfsCounter, 2464 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 1040 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 4895 SdHoareTripleChecker+Invalid, 2723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1040 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:57:45,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2711 Valid, 4895 Invalid, 2723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1040 Valid, 1681 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2021-12-16 03:57:45,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6269 states. [2021-12-16 03:57:45,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6269 to 5793. [2021-12-16 03:57:45,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 4179 states have (on average 1.3340512084230678) internal successors, (5575), 4260 states have internal predecessors, (5575), 1271 states have call successors, (1271), 325 states have call predecessors, (1271), 342 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2021-12-16 03:57:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8233 transitions. [2021-12-16 03:57:45,330 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8233 transitions. Word has length 131 [2021-12-16 03:57:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:57:45,330 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 8233 transitions. [2021-12-16 03:57:45,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:57:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8233 transitions. [2021-12-16 03:57:45,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-16 03:57:45,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:57:45,334 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:57:45,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:57:45,334 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:57:45,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:57:45,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1113050105, now seen corresponding path program 1 times [2021-12-16 03:57:45,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:57:45,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445814028] [2021-12-16 03:57:45,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:57:45,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:57:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:57:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-16 03:57:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 03:57:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 03:57:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-16 03:57:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-16 03:57:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-16 03:57:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-16 03:57:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:57:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:57:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:57:45,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:57:45,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:57:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-16 03:57:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-16 03:57:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:57:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:57:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:57:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:57:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-16 03:57:45,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:57:45,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445814028] [2021-12-16 03:57:45,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445814028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:57:45,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:57:45,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:57:45,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387778702] [2021-12-16 03:57:45,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:57:45,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:57:45,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:57:45,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:57:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:57:45,676 INFO L87 Difference]: Start difference. First operand 5793 states and 8233 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-16 03:57:50,109 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 03:57:52,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []