./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 ae007674 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-dev-ae00767 [2021-12-28 03:55:07,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:55:07,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:55:07,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:55:07,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:55:07,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:55:07,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:55:07,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:55:07,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:55:07,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:55:07,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:55:07,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:55:07,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:55:07,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:55:07,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:55:07,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:55:07,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:55:07,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:55:07,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:55:07,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:55:07,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:55:07,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:55:07,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:55:07,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:55:07,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:55:07,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:55:07,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:55:07,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:55:07,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:55:07,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:55:07,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:55:07,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:55:07,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:55:07,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:55:07,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:55:07,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:55:07,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:55:07,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:55:07,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:55:07,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:55:07,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:55:07,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:55:07,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:55:07,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:55:07,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:55:07,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:55:07,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:55:07,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:55:07,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:55:07,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:55:07,163 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:55:07,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:55:07,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:55:07,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:55:07,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:55:07,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:55:07,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:55:07,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:55:07,165 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:55:07,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:55:07,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:55:07,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:55:07,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:55:07,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:55:07,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:55:07,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:55:07,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:55:07,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:55:07,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:55:07,167 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:55:07,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:55:07,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:55:07,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2021-12-28 03:55:07,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:55:07,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:55:07,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:55:07,457 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:55:07,458 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:55:07,459 INFO L432 ainManager$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 [2021-12-28 03:55:07,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82c68bdab/15083109ac66410583b6599dfecfddc8/FLAG7613840ef [2021-12-28 03:55:08,103 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:55:08,104 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 [2021-12-28 03:55:08,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82c68bdab/15083109ac66410583b6599dfecfddc8/FLAG7613840ef [2021-12-28 03:55:08,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82c68bdab/15083109ac66410583b6599dfecfddc8 [2021-12-28 03:55:08,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:55:08,494 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:55:08,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:55:08,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:55:08,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:55:08,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:55:08" (1/1) ... [2021-12-28 03:55:08,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4270358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:08, skipping insertion in model container [2021-12-28 03:55:08,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:55:08" (1/1) ... [2021-12-28 03:55:08,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:55:08,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:55:09,370 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] [2021-12-28 03:55:09,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:55:09,860 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:55:09,940 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] [2021-12-28 03:55:10,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:55:10,203 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:55:10,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10 WrapperNode [2021-12-28 03:55:10,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:55:10,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:55:10,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:55:10,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:55:10,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,564 INFO L137 Inliner]: procedures = 245, calls = 3306, calls flagged for inlining = 118, calls inlined = 118, statements flattened = 6412 [2021-12-28 03:55:10,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:55:10,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:55:10,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:55:10,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:55:10,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:55:10,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:55:10,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:55:10,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:55:10,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (1/1) ... [2021-12-28 03:55:10,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:55:10,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:55:10,892 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) [2021-12-28 03:55:10,915 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 [2021-12-28 03:55:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2021-12-28 03:55:10,929 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2021-12-28 03:55:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2021-12-28 03:55:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2021-12-28 03:55:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_18 [2021-12-28 03:55:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_18 [2021-12-28 03:55:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:55:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:55:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 03:55:10,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 03:55:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_destruct [2021-12-28 03:55:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_destruct [2021-12-28 03:55:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-28 03:55:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-28 03:55:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-28 03:55:10,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-28 03:55:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_22 [2021-12-28 03:55:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_22 [2021-12-28 03:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2021-12-28 03:55:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2021-12-28 03:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:55:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-12-28 03:55:10,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-12-28 03:55:10,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-28 03:55:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-28 03:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2021-12-28 03:55:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2021-12-28 03:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 03:55:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 03:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 03:55:10,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 03:55:10,933 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2021-12-28 03:55:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2021-12-28 03:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-28 03:55:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-28 03:55:10,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:55:10,934 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 03:55:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 03:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-28 03:55:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-28 03:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:55:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:55:10,935 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2021-12-28 03:55:10,935 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2021-12-28 03:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2021-12-28 03:55:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2021-12-28 03:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2021-12-28 03:55:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2021-12-28 03:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-28 03:55:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2021-12-28 03:55:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2021-12-28 03:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-28 03:55:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-28 03:55:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2021-12-28 03:55:10,938 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2021-12-28 03:55:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-12-28 03:55:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-12-28 03:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-12-28 03:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 03:55:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 03:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2021-12-28 03:55:10,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2021-12-28 03:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:55:10,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 03:55:10,940 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 03:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2021-12-28 03:55:10,940 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2021-12-28 03:55:10,940 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 03:55:10,940 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 03:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 03:55:10,941 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 03:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 03:55:10,941 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 03:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2021-12-28 03:55:10,941 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2021-12-28 03:55:10,941 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_shutdown [2021-12-28 03:55:10,941 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_shutdown [2021-12-28 03:55:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2021-12-28 03:55:10,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2021-12-28 03:55:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2021-12-28 03:55:10,942 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2021-12-28 03:55:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:55:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-28 03:55:10,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-28 03:55:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-28 03:55:10,943 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-28 03:55:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2021-12-28 03:55:10,943 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2021-12-28 03:55:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 03:55:10,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 03:55:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:55:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-12-28 03:55:10,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-12-28 03:55:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-12-28 03:55:10,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-12-28 03:55:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2021-12-28 03:55:10,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2021-12-28 03:55:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:55:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2021-12-28 03:55:10,945 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2021-12-28 03:55:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-28 03:55:10,946 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-28 03:55:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:55:10,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:55:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 03:55:10,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 03:55:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2021-12-28 03:55:10,946 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2021-12-28 03:55:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2021-12-28 03:55:10,947 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2021-12-28 03:55:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-28 03:55:10,947 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-28 03:55:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-28 03:55:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-28 03:55:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2021-12-28 03:55:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2021-12-28 03:55:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2021-12-28 03:55:10,951 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2021-12-28 03:55:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 03:55:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 03:55:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:55:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2021-12-28 03:55:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2021-12-28 03:55:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2021-12-28 03:55:10,957 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2021-12-28 03:55:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2021-12-28 03:55:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2021-12-28 03:55:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-12-28 03:55:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-12-28 03:55:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 03:55:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 03:55:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2021-12-28 03:55:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2021-12-28 03:55:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2021-12-28 03:55:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2021-12-28 03:55:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:55:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2021-12-28 03:55:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2021-12-28 03:55:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:55:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 03:55:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 03:55:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:55:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_17 [2021-12-28 03:55:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_17 [2021-12-28 03:55:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:55:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 03:55:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-12-28 03:55:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-12-28 03:55:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2021-12-28 03:55:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2021-12-28 03:55:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2021-12-28 03:55:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2021-12-28 03:55:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2021-12-28 03:55:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2021-12-28 03:55:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2021-12-28 03:55:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2021-12-28 03:55:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2021-12-28 03:55:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2021-12-28 03:55:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2021-12-28 03:55:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2021-12-28 03:55:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-28 03:55:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-28 03:55:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-28 03:55:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-28 03:55:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:55:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-28 03:55:10,962 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-28 03:55:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-28 03:55:10,962 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-28 03:55:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2021-12-28 03:55:10,962 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2021-12-28 03:55:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:55:10,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:55:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2021-12-28 03:55:10,963 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2021-12-28 03:55:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2021-12-28 03:55:10,963 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2021-12-28 03:55:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 03:55:10,963 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 03:55:11,554 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:55:11,557 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:55:11,708 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 03:55:12,268 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-28 03:55:17,692 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:55:17,721 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:55:17,726 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 03:55:17,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:55:17 BoogieIcfgContainer [2021-12-28 03:55:17,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:55:17,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:55:17,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:55:17,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:55:17,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:55:08" (1/3) ... [2021-12-28 03:55:17,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7bd965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:55:17, skipping insertion in model container [2021-12-28 03:55:17,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:55:10" (2/3) ... [2021-12-28 03:55:17,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7bd965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:55:17, skipping insertion in model container [2021-12-28 03:55:17,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:55:17" (3/3) ... [2021-12-28 03:55:17,742 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-12-28 03:55:17,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:55:17,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:55:17,784 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:55:17,788 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 [2021-12-28 03:55:17,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:55:17,834 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) [2021-12-28 03:55:17,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-28 03:55:17,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:17,859 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] [2021-12-28 03:55:17,860 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:17,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1074681228, now seen corresponding path program 1 times [2021-12-28 03:55:17,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:17,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641328330] [2021-12-28 03:55:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:17,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:55:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:55:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:55:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:55:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:55:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:55:18,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:55:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:55:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:55:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:55:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:55:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:55:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 03:55:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 03:55:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:18,696 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-28 03:55:18,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:18,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641328330] [2021-12-28 03:55:18,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641328330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:18,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:18,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:55:18,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024964291] [2021-12-28 03:55:18,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:18,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:55:18,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:55:18,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:55:18,731 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) [2021-12-28 03:55:22,085 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 [] [2021-12-28 03:55:24,110 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 [] [2021-12-28 03:55:30,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:30,060 INFO L93 Difference]: Finished difference Result 4571 states and 6678 transitions. [2021-12-28 03:55:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:55:30,063 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 [2021-12-28 03:55:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:30,091 INFO L225 Difference]: With dead ends: 4571 [2021-12-28 03:55:30,091 INFO L226 Difference]: Without dead ends: 3049 [2021-12-28 03:55:30,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:55:30,107 INFO L933 BasicCegarLoop]: 2276 mSDtfsCounter, 2979 mSDsluCounter, 3512 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 1664 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3234 SdHoareTripleChecker+Valid, 5788 SdHoareTripleChecker+Invalid, 3988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1664 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:30,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3234 Valid, 5788 Invalid, 3988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1664 Valid, 2322 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2021-12-28 03:55:30,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-12-28 03:55:30,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2862. [2021-12-28 03:55:30,305 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) [2021-12-28 03:55:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 4027 transitions. [2021-12-28 03:55:30,323 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 4027 transitions. Word has length 117 [2021-12-28 03:55:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:30,324 INFO L470 AbstractCegarLoop]: Abstraction has 2862 states and 4027 transitions. [2021-12-28 03:55:30,326 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) [2021-12-28 03:55:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 4027 transitions. [2021-12-28 03:55:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 03:55:30,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:30,410 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] [2021-12-28 03:55:30,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:55:30,412 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:30,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1971538155, now seen corresponding path program 1 times [2021-12-28 03:55:30,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:30,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544464785] [2021-12-28 03:55:30,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:30,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:55:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:55:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:55:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:55:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:55:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:55:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:55:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:55:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:55:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:55:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:55:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:55:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:55:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:55:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-28 03:55:30,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:30,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544464785] [2021-12-28 03:55:30,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544464785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:30,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:30,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:55:30,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766100986] [2021-12-28 03:55:30,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:30,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:55:30,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:55:30,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:55:30,998 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) [2021-12-28 03:55:33,951 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 [] [2021-12-28 03:55:36,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:38,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 03:55:46,838 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 [] [2021-12-28 03:55:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:48,254 INFO L93 Difference]: Finished difference Result 9103 states and 13201 transitions. [2021-12-28 03:55:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:55:48,255 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 [2021-12-28 03:55:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:48,286 INFO L225 Difference]: With dead ends: 9103 [2021-12-28 03:55:48,286 INFO L226 Difference]: Without dead ends: 6274 [2021-12-28 03:55:48,298 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 [2021-12-28 03:55:48,299 INFO L933 BasicCegarLoop]: 2353 mSDtfsCounter, 3140 mSDsluCounter, 4750 mSDsCounter, 0 mSdLazyCounter, 3299 mSolverCounterSat, 1790 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 7103 SdHoareTripleChecker+Invalid, 5093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1790 IncrementalHoareTripleChecker+Valid, 3299 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:48,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3396 Valid, 7103 Invalid, 5093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1790 Valid, 3299 Invalid, 4 Unknown, 0 Unchecked, 16.8s Time] [2021-12-28 03:55:48,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6274 states. [2021-12-28 03:55:48,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6274 to 5787. [2021-12-28 03:55:48,478 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) [2021-12-28 03:55:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5787 states to 5787 states and 8233 transitions. [2021-12-28 03:55:48,504 INFO L78 Accepts]: Start accepts. Automaton has 5787 states and 8233 transitions. Word has length 129 [2021-12-28 03:55:48,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:48,505 INFO L470 AbstractCegarLoop]: Abstraction has 5787 states and 8233 transitions. [2021-12-28 03:55:48,506 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) [2021-12-28 03:55:48,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5787 states and 8233 transitions. [2021-12-28 03:55:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 03:55:48,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:48,513 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] [2021-12-28 03:55:48,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:55:48,514 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash -988843388, now seen corresponding path program 1 times [2021-12-28 03:55:48,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:48,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290862431] [2021-12-28 03:55:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:48,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:55:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:55:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:55:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:55:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:55:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:55:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:55:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:55:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:55:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:55:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:55:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:55:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:55:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:55:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-28 03:55:48,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:48,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290862431] [2021-12-28 03:55:48,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290862431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:48,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:48,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:55:48,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123505608] [2021-12-28 03:55:48,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:48,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:55:48,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:55:48,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:55:48,953 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) [2021-12-28 03:55:52,577 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 [] [2021-12-28 03:55:54,605 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 [] [2021-12-28 03:55:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:55:59,285 INFO L93 Difference]: Finished difference Result 6265 states and 9067 transitions. [2021-12-28 03:55:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:55:59,286 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 [2021-12-28 03:55:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:55:59,312 INFO L225 Difference]: With dead ends: 6265 [2021-12-28 03:55:59,312 INFO L226 Difference]: Without dead ends: 6262 [2021-12-28 03:55:59,315 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 [2021-12-28 03:55:59,317 INFO L933 BasicCegarLoop]: 1953 mSDtfsCounter, 2455 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 1038 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 4893 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1038 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:55:59,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2703 Valid, 4893 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1038 Valid, 1703 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-12-28 03:55:59,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6262 states. [2021-12-28 03:55:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6262 to 5786. [2021-12-28 03:55:59,519 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) [2021-12-28 03:55:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5786 states to 5786 states and 8231 transitions. [2021-12-28 03:55:59,549 INFO L78 Accepts]: Start accepts. Automaton has 5786 states and 8231 transitions. Word has length 130 [2021-12-28 03:55:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:55:59,550 INFO L470 AbstractCegarLoop]: Abstraction has 5786 states and 8231 transitions. [2021-12-28 03:55:59,550 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) [2021-12-28 03:55:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 5786 states and 8231 transitions. [2021-12-28 03:55:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-28 03:55:59,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:55:59,554 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] [2021-12-28 03:55:59,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:55:59,555 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:55:59,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:55:59,556 INFO L85 PathProgramCache]: Analyzing trace with hash -590071816, now seen corresponding path program 1 times [2021-12-28 03:55:59,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:55:59,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128202661] [2021-12-28 03:55:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:55:59,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:55:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:55:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:55:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:55:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:55:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:55:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:55:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:55:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:55:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:55:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:55:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:55:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:55:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:55:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:55:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:55:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:55:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:55:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:55:59,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:55:59,963 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-28 03:55:59,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:55:59,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128202661] [2021-12-28 03:55:59,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128202661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:55:59,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:55:59,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:55:59,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196034726] [2021-12-28 03:55:59,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:55:59,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:55:59,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:55:59,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:55:59,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:55:59,966 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) [2021-12-28 03:56:02,759 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 [] [2021-12-28 03:56:05,258 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 [] [2021-12-28 03:56:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:56:08,327 INFO L93 Difference]: Finished difference Result 6264 states and 9065 transitions. [2021-12-28 03:56:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:56:08,328 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 [2021-12-28 03:56:08,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:56:08,355 INFO L225 Difference]: With dead ends: 6264 [2021-12-28 03:56:08,355 INFO L226 Difference]: Without dead ends: 6261 [2021-12-28 03:56:08,359 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 [2021-12-28 03:56:08,360 INFO L933 BasicCegarLoop]: 1949 mSDtfsCounter, 2728 mSDsluCounter, 2035 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 1399 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2977 SdHoareTripleChecker+Valid, 3984 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1399 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:56:08,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2977 Valid, 3984 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1399 Valid, 1150 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2021-12-28 03:56:08,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2021-12-28 03:56:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 5785. [2021-12-28 03:56:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 4175 states have (on average 1.33437125748503) internal successors, (5571), 4256 states have internal predecessors, (5571), 1271 states have call successors, (1271), 321 states have call predecessors, (1271), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2021-12-28 03:56:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 8229 transitions. [2021-12-28 03:56:08,526 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 8229 transitions. Word has length 131 [2021-12-28 03:56:08,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:56:08,527 INFO L470 AbstractCegarLoop]: Abstraction has 5785 states and 8229 transitions. [2021-12-28 03:56:08,527 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) [2021-12-28 03:56:08,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 8229 transitions. [2021-12-28 03:56:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-28 03:56:08,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:56:08,530 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] [2021-12-28 03:56:08,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:56:08,530 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:56:08,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:56:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1113050105, now seen corresponding path program 1 times [2021-12-28 03:56:08,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:56:08,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255708326] [2021-12-28 03:56:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:56:08,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:56:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:56:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 03:56:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-28 03:56:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-28 03:56:08,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-28 03:56:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 03:56:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 03:56:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-28 03:56:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 03:56:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 03:56:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 03:56:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:56:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 03:56:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 03:56:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 03:56:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:56:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 03:56:08,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 03:56:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:56:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2021-12-28 03:56:08,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:56:08,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255708326] [2021-12-28 03:56:08,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255708326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:56:08,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:56:08,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:56:08,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788529906] [2021-12-28 03:56:08,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:56:08,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:56:08,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:56:08,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:56:08,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:56:08,983 INFO L87 Difference]: Start difference. First operand 5785 states and 8229 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)