./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:42:47,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:42:47,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:42:47,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:42:47,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:42:47,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:42:47,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:42:47,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:42:47,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:42:47,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:42:47,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:42:47,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:42:47,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:42:47,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:42:47,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:42:47,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:42:47,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:42:47,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:42:47,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:42:47,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:42:47,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:42:47,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:42:47,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:42:47,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:42:47,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:42:47,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:42:47,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:42:47,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:42:47,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:42:47,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:42:47,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:42:47,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:42:47,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:42:47,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:42:47,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:42:47,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:42:47,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:42:47,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:42:47,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:42:47,435 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:42:47,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:42:47,436 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:42:47,461 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:42:47,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:42:47,462 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:42:47,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:42:47,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:42:47,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:42:47,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:42:47,464 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:42:47,465 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:42:47,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:42:47,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:42:47,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:42:47,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:42:47,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:42:47,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:42:47,467 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:42:47,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:42:47,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:42:47,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:42:47,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:42:47,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:42:47,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:42:47,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:42:47,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:42:47,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:42:47,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:42:47,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:42:47,469 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:42:47,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:42:47,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:42:47,470 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:42:47,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2021-12-14 17:42:47,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:42:47,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:42:47,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:42:47,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:42:47,717 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:42:47,718 INFO L432 ainManager$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 [2021-12-14 17:42:47,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509102317/27ae5a49b05e4cdd91d9158dcf276b84/FLAG2a0f88e7d [2021-12-14 17:42:48,436 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:42:48,437 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 [2021-12-14 17:42:48,473 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509102317/27ae5a49b05e4cdd91d9158dcf276b84/FLAG2a0f88e7d [2021-12-14 17:42:48,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509102317/27ae5a49b05e4cdd91d9158dcf276b84 [2021-12-14 17:42:48,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:42:48,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:42:48,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:42:48,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:42:48,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:42:48,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:42:48" (1/1) ... [2021-12-14 17:42:48,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba7007c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:48, skipping insertion in model container [2021-12-14 17:42:48,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:42:48" (1/1) ... [2021-12-14 17:42:48,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:42:48,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:42:49,704 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] [2021-12-14 17:42:50,170 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:42:50,231 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:42:50,336 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] [2021-12-14 17:42:50,556 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:42:50,701 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:42:50,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50 WrapperNode [2021-12-14 17:42:50,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:42:50,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:42:50,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:42:50,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:42:50,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:50,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:51,058 INFO L137 Inliner]: procedures = 245, calls = 3306, calls flagged for inlining = 118, calls inlined = 118, statements flattened = 6412 [2021-12-14 17:42:51,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:42:51,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:42:51,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:42:51,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:42:51,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:51,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:51,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:51,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:51,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:51,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:51,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:51,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:42:51,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:42:51,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:42:51,403 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:42:51,404 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (1/1) ... [2021-12-14 17:42:51,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:42:51,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:42:51,437 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) [2021-12-14 17:42:51,515 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 [2021-12-14 17:42:51,533 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2021-12-14 17:42:51,534 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2021-12-14 17:42:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2021-12-14 17:42:51,534 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2021-12-14 17:42:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_18 [2021-12-14 17:42:51,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_18 [2021-12-14 17:42:51,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:42:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:42:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:42:51,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:42:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_destruct [2021-12-14 17:42:51,535 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_destruct [2021-12-14 17:42:51,535 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-14 17:42:51,535 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-14 17:42:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-14 17:42:51,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-14 17:42:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_22 [2021-12-14 17:42:51,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_22 [2021-12-14 17:42:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2021-12-14 17:42:51,536 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2021-12-14 17:42:51,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:42:51,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:42:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-14 17:42:51,537 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-14 17:42:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-14 17:42:51,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-14 17:42:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2021-12-14 17:42:51,537 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2021-12-14 17:42:51,537 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:42:51,538 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:42:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:42:51,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:42:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-14 17:42:51,538 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-14 17:42:51,538 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-14 17:42:51,538 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-14 17:42:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:42:51,539 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:42:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:42:51,539 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:42:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-14 17:42:51,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-14 17:42:51,539 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:42:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:42:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2021-12-14 17:42:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2021-12-14 17:42:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2021-12-14 17:42:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2021-12-14 17:42:51,540 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2021-12-14 17:42:51,540 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2021-12-14 17:42:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:42:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-14 17:42:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2021-12-14 17:42:51,541 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2021-12-14 17:42:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-14 17:42:51,541 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-14 17:42:51,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:42:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2021-12-14 17:42:51,542 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2021-12-14 17:42:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-12-14 17:42:51,542 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-12-14 17:42:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-14 17:42:51,542 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:42:51,542 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:42:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-12-14 17:42:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-12-14 17:42:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:42:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:42:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 17:42:51,543 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 17:42:51,543 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-12-14 17:42:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-12-14 17:42:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:42:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:42:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:42:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:42:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-14 17:42:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-14 17:42:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2021-12-14 17:42:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2021-12-14 17:42:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_shutdown [2021-12-14 17:42:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_shutdown [2021-12-14 17:42:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-12-14 17:42:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-12-14 17:42:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2021-12-14 17:42:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2021-12-14 17:42:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:42:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:42:51,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:42:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 17:42:51,546 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 17:42:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2021-12-14 17:42:51,546 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2021-12-14 17:42:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 17:42:51,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 17:42:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:42:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-12-14 17:42:51,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-12-14 17:42:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-12-14 17:42:51,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-12-14 17:42:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2021-12-14 17:42:51,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2021-12-14 17:42:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:42:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2021-12-14 17:42:51,548 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2021-12-14 17:42:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-14 17:42:51,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-14 17:42:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:42:51,549 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:42:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:42:51,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:42:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2021-12-14 17:42:51,549 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2021-12-14 17:42:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2021-12-14 17:42:51,549 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2021-12-14 17:42:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-14 17:42:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-14 17:42:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:42:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:42:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2021-12-14 17:42:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2021-12-14 17:42:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2021-12-14 17:42:51,551 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2021-12-14 17:42:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:42:51,551 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:42:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:42:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2021-12-14 17:42:51,551 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2021-12-14 17:42:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2021-12-14 17:42:51,552 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2021-12-14 17:42:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2021-12-14 17:42:51,552 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2021-12-14 17:42:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-14 17:42:51,552 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-14 17:42:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:42:51,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:42:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2021-12-14 17:42:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2021-12-14 17:42:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2021-12-14 17:42:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2021-12-14 17:42:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:42:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2021-12-14 17:42:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2021-12-14 17:42:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:42:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-14 17:42:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-14 17:42:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:42:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_17 [2021-12-14 17:42:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_17 [2021-12-14 17:42:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:42:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:42:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-14 17:42:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-14 17:42:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-12-14 17:42:51,555 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-12-14 17:42:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2021-12-14 17:42:51,555 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2021-12-14 17:42:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2021-12-14 17:42:51,555 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2021-12-14 17:42:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2021-12-14 17:42:51,556 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2021-12-14 17:42:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2021-12-14 17:42:51,556 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2021-12-14 17:42:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2021-12-14 17:42:51,556 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2021-12-14 17:42:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-14 17:42:51,556 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-14 17:42:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-14 17:42:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-14 17:42:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:42:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-14 17:42:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-14 17:42:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-14 17:42:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-14 17:42:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2021-12-14 17:42:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2021-12-14 17:42:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:42:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:42:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-12-14 17:42:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-12-14 17:42:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2021-12-14 17:42:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2021-12-14 17:42:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 17:42:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 17:42:52,192 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:42:52,195 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:42:52,370 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:42:52,932 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-14 17:42:59,309 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:42:59,337 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:42:59,337 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:42:59,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:42:59 BoogieIcfgContainer [2021-12-14 17:42:59,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:42:59,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:42:59,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:42:59,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:42:59,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:42:48" (1/3) ... [2021-12-14 17:42:59,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1641610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:42:59, skipping insertion in model container [2021-12-14 17:42:59,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:42:50" (2/3) ... [2021-12-14 17:42:59,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1641610 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:42:59, skipping insertion in model container [2021-12-14 17:42:59,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:42:59" (3/3) ... [2021-12-14 17:42:59,352 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-12-14 17:42:59,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:42:59,358 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:42:59,419 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:42:59,434 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 [2021-12-14 17:42:59,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:42:59,540 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) [2021-12-14 17:42:59,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-14 17:42:59,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:42:59,557 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] [2021-12-14 17:42:59,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:42:59,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:42:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1074681228, now seen corresponding path program 1 times [2021-12-14 17:42:59,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:42:59,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973526738] [2021-12-14 17:42:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:42:59,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:42:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:43:00,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:43:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:43:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:43:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:43:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:43:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:43:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:43:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:43:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:43:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:43:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:43:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 17:43:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:43:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:43:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-14 17:43:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-14 17:43:00,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-14 17:43:00,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:43:00,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973526738] [2021-12-14 17:43:00,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973526738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:43:00,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:43:00,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:43:00,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122570426] [2021-12-14 17:43:00,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:43:00,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:43:00,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:43:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:43:00,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:43:00,496 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) [2021-12-14 17:43:04,193 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 [] [2021-12-14 17:43:06,220 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 [] [2021-12-14 17:43:12,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:43:12,206 INFO L93 Difference]: Finished difference Result 4571 states and 6678 transitions. [2021-12-14 17:43:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:43:12,208 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 [2021-12-14 17:43:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:43:12,248 INFO L225 Difference]: With dead ends: 4571 [2021-12-14 17:43:12,248 INFO L226 Difference]: Without dead ends: 3049 [2021-12-14 17:43:12,267 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 [2021-12-14 17:43:12,271 INFO L933 BasicCegarLoop]: 2276 mSDtfsCounter, 2982 mSDsluCounter, 3757 mSDsCounter, 0 mSdLazyCounter, 2078 mSolverCounterSat, 1664 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3236 SdHoareTripleChecker+Valid, 6033 SdHoareTripleChecker+Invalid, 3744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1664 IncrementalHoareTripleChecker+Valid, 2078 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:43:12,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3236 Valid, 6033 Invalid, 3744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1664 Valid, 2078 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2021-12-14 17:43:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-12-14 17:43:12,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2862. [2021-12-14 17:43:12,532 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) [2021-12-14 17:43:12,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 4027 transitions. [2021-12-14 17:43:12,557 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 4027 transitions. Word has length 117 [2021-12-14 17:43:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:43:12,558 INFO L470 AbstractCegarLoop]: Abstraction has 2862 states and 4027 transitions. [2021-12-14 17:43:12,560 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) [2021-12-14 17:43:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 4027 transitions. [2021-12-14 17:43:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-14 17:43:12,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:43:12,573 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] [2021-12-14 17:43:12,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:43:12,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:43:12,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:43:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1971538155, now seen corresponding path program 1 times [2021-12-14 17:43:12,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:43:12,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439006151] [2021-12-14 17:43:12,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:43:12,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:43:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:43:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:43:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:43:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:43:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:43:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:43:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:43:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:43:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:43:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:43:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:43:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:43:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 17:43:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:13,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:43:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:13,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:43:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:43:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:43:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:13,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:43:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-14 17:43:13,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:43:13,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439006151] [2021-12-14 17:43:13,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439006151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:43:13,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:43:13,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:43:13,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679976538] [2021-12-14 17:43:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:43:13,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:43:13,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:43:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:43:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:43:13,073 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) [2021-12-14 17:43:17,187 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 [] [2021-12-14 17:43:19,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:43:28,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:43:29,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:43:29,663 INFO L93 Difference]: Finished difference Result 9103 states and 13201 transitions. [2021-12-14 17:43:29,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:43:29,664 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 [2021-12-14 17:43:29,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:43:29,716 INFO L225 Difference]: With dead ends: 9103 [2021-12-14 17:43:29,716 INFO L226 Difference]: Without dead ends: 6274 [2021-12-14 17:43:29,733 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 [2021-12-14 17:43:29,734 INFO L933 BasicCegarLoop]: 2364 mSDtfsCounter, 3149 mSDsluCounter, 5002 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 1795 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3401 SdHoareTripleChecker+Valid, 7366 SdHoareTripleChecker+Invalid, 4834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1795 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:43:29,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3401 Valid, 7366 Invalid, 4834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1795 Valid, 3036 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2021-12-14 17:43:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6274 states. [2021-12-14 17:43:30,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6274 to 5787. [2021-12-14 17:43:30,039 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) [2021-12-14 17:43:30,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 8233 transitions. [2021-12-14 17:43:30,069 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 8233 transitions. Word has length 129 [2021-12-14 17:43:30,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:43:30,071 INFO L470 AbstractCegarLoop]: Abstraction has 5787 states and 8233 transitions. [2021-12-14 17:43:30,071 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) [2021-12-14 17:43:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 8233 transitions. [2021-12-14 17:43:30,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-14 17:43:30,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:43:30,084 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] [2021-12-14 17:43:30,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:43:30,088 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:43:30,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:43:30,088 INFO L85 PathProgramCache]: Analyzing trace with hash -988843388, now seen corresponding path program 1 times [2021-12-14 17:43:30,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:43:30,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312677256] [2021-12-14 17:43:30,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:43:30,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:43:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:43:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:43:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:43:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:43:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:43:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:43:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:43:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:43:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:43:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:43:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:43:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:43:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 17:43:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:43:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:43:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:43:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:43:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:43:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-14 17:43:30,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:43:30,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312677256] [2021-12-14 17:43:30,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312677256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:43:30,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:43:30,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:43:30,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817451136] [2021-12-14 17:43:30,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:43:30,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:43:30,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:43:30,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:43:30,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:43:30,635 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) [2021-12-14 17:43:34,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:43:36,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 17:43:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:43:40,804 INFO L93 Difference]: Finished difference Result 6265 states and 9067 transitions. [2021-12-14 17:43:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:43:40,805 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 [2021-12-14 17:43:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:43:40,839 INFO L225 Difference]: With dead ends: 6265 [2021-12-14 17:43:40,839 INFO L226 Difference]: Without dead ends: 6262 [2021-12-14 17:43:40,843 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 [2021-12-14 17:43:40,844 INFO L933 BasicCegarLoop]: 1951 mSDtfsCounter, 2444 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 1688 mSolverCounterSat, 1029 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 4926 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 1688 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:43:40,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 4926 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1029 Valid, 1688 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2021-12-14 17:43:40,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6262 states. [2021-12-14 17:43:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6262 to 5786. [2021-12-14 17:43:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5786 states, 4175 states have (on average 1.3346107784431138) internal successors, (5572), 4257 states have internal predecessors, (5572), 1272 states have call successors, (1272), 321 states have call predecessors, (1272), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2021-12-14 17:43:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 8231 transitions. [2021-12-14 17:43:41,090 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 8231 transitions. Word has length 130 [2021-12-14 17:43:41,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:43:41,090 INFO L470 AbstractCegarLoop]: Abstraction has 5786 states and 8231 transitions. [2021-12-14 17:43:41,091 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) [2021-12-14 17:43:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 8231 transitions. [2021-12-14 17:43:41,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-14 17:43:41,095 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:43:41,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:43:41,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:43:41,095 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:43:41,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:43:41,096 INFO L85 PathProgramCache]: Analyzing trace with hash -590071816, now seen corresponding path program 1 times [2021-12-14 17:43:41,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:43:41,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537592788] [2021-12-14 17:43:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:43:41,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:43:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:43:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:43:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:43:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:43:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:43:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:43:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-14 17:43:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:43:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:43:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:43:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:43:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:43:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 17:43:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:43:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:43:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:43:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 17:43:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:43:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:43:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-14 17:43:41,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:43:41,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537592788] [2021-12-14 17:43:41,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537592788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:43:41,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:43:41,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:43:41,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365014790] [2021-12-14 17:43:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:43:41,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:43:41,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:43:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:43:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:43:41,540 INFO L87 Difference]: Start difference. First operand 5786 states and 8231 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) [2021-12-14 17:43:45,093 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 []