./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:37:25,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:37:25,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:37:25,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:37:25,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:37:25,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:37:25,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:37:25,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:37:25,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:37:25,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:37:25,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:37:25,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:37:25,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:37:25,820 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:37:25,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:37:25,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:37:25,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:37:25,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:37:25,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:37:25,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:37:25,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:37:25,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:37:25,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:37:25,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:37:25,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:37:25,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:37:25,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:37:25,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:37:25,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:37:25,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:37:25,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:37:25,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:37:25,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:37:25,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:37:25,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:37:25,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:37:25,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:37:25,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:37:25,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:37:25,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:37:25,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:37:25,839 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:37:25,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:37:25,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:37:25,859 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:37:25,860 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:37:25,860 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:37:25,860 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:37:25,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:37:25,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:37:25,861 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:37:25,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:37:25,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:37:25,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:37:25,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:37:25,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:37:25,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:37:25,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:37:25,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:37:25,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:37:25,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:37:25,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:37:25,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:37:25,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:37:25,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:37:25,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:37:25,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:37:25,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:37:25,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:37:25,865 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:37:25,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:37:25,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:37:25,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2021-12-28 04:37:26,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:37:26,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:37:26,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:37:26,157 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:37:26,158 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:37:26,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-28 04:37:26,207 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4737ea9/f4f511d53a9d4c4db2e21b174c891a57/FLAG66c123916 [2021-12-28 04:37:26,853 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:37:26,854 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-28 04:37:26,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4737ea9/f4f511d53a9d4c4db2e21b174c891a57/FLAG66c123916 [2021-12-28 04:37:27,233 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b4737ea9/f4f511d53a9d4c4db2e21b174c891a57 [2021-12-28 04:37:27,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:37:27,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:37:27,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:37:27,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:37:27,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:37:27,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:37:27" (1/1) ... [2021-12-28 04:37:27,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa6dc46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:27, skipping insertion in model container [2021-12-28 04:37:27,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:37:27" (1/1) ... [2021-12-28 04:37:27,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:37:27,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:37:28,610 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-12-28 04:37:28,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:37:28,675 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:37:28,951 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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-12-28 04:37:28,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:37:28,997 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:37:28,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28 WrapperNode [2021-12-28 04:37:28,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:37:28,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:37:28,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:37:28,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:37:29,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,233 INFO L137 Inliner]: procedures = 191, calls = 3778, calls flagged for inlining = 80, calls inlined = 67, statements flattened = 6858 [2021-12-28 04:37:29,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:37:29,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:37:29,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:37:29,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:37:29,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:37:29,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:37:29,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:37:29,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:37:29,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (1/1) ... [2021-12-28 04:37:29,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:37:29,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:37:29,616 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 04:37:29,708 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 04:37:29,731 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_probe [2021-12-28 04:37:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_probe [2021-12-28 04:37:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:37:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_reg_sync [2021-12-28 04:37:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_reg_sync [2021-12-28 04:37:29,733 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2021-12-28 04:37:29,733 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2021-12-28 04:37:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_reg_sync [2021-12-28 04:37:29,734 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_reg_sync [2021-12-28 04:37:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:37:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:37:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:37:29,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:37:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:37:29,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:37:29,734 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:37:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write [2021-12-28 04:37:29,735 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write [2021-12-28 04:37:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-28 04:37:29,735 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-28 04:37:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_ioctl [2021-12-28 04:37:29,735 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_ioctl [2021-12-28 04:37:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_tiocmiwait [2021-12-28 04:37:29,735 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_tiocmiwait [2021-12-28 04:37:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-28 04:37:29,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-28 04:37:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2021-12-28 04:37:29,736 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2021-12-28 04:37:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 04:37:29,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 04:37:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:37:29,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:37:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_port_private [2021-12-28 04:37:29,737 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_port_private [2021-12-28 04:37:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-28 04:37:29,737 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-28 04:37:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-28 04:37:29,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-28 04:37:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-28 04:37:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-28 04:37:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_uart_reg [2021-12-28 04:37:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_uart_reg [2021-12-28 04:37:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit_unlock [2021-12-28 04:37:29,738 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit_unlock [2021-12-28 04:37:29,738 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 04:37:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 04:37:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2021-12-28 04:37:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2021-12-28 04:37:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_get_usb_serial [2021-12-28 04:37:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_get_usb_serial [2021-12-28 04:37:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_generic_get_icount [2021-12-28 04:37:29,739 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_generic_get_icount [2021-12-28 04:37:29,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:37:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_async [2021-12-28 04:37:29,740 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_async [2021-12-28 04:37:29,740 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-28 04:37:29,740 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-28 04:37:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-28 04:37:29,741 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-28 04:37:29,741 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:37:29,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:37:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_termios [2021-12-28 04:37:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_termios [2021-12-28 04:37:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:37:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:37:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_led_sync [2021-12-28 04:37:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_led_sync [2021-12-28 04:37:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_3 [2021-12-28 04:37:29,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_3 [2021-12-28 04:37:29,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:37:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:37:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:37:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:37:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:37:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:37:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_chars_in_buffer [2021-12-28 04:37:29,743 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_chars_in_buffer [2021-12-28 04:37:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:37:29,743 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-12-28 04:37:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-12-28 04:37:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_throttle [2021-12-28 04:37:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_throttle [2021-12-28 04:37:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-28 04:37:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-28 04:37:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:37:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-12-28 04:37:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-12-28 04:37:29,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-28 04:37:29,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-28 04:37:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:37:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:37:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-12-28 04:37:29,745 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-12-28 04:37:29,745 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit_lock [2021-12-28 04:37:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit_lock [2021-12-28 04:37:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_uart_reg [2021-12-28 04:37:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_uart_reg [2021-12-28 04:37:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:37:29,746 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-28 04:37:29,746 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-28 04:37:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-28 04:37:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-28 04:37:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-28 04:37:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-28 04:37:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-28 04:37:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-28 04:37:29,747 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_paranoia_check [2021-12-28 04:37:29,747 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_paranoia_check [2021-12-28 04:37:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_serial_paranoia_check [2021-12-28 04:37:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_serial_paranoia_check [2021-12-28 04:37:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:37:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:37:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_led_activity [2021-12-28 04:37:29,748 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_led_activity [2021-12-28 04:37:29,748 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_bulk_in_callback [2021-12-28 04:37:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_bulk_in_callback [2021-12-28 04:37:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_write_room [2021-12-28 04:37:29,749 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_write_room [2021-12-28 04:37:29,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:37:29,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:37:29,751 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_calc_num_ports [2021-12-28 04:37:29,751 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_calc_num_ports [2021-12-28 04:37:29,751 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_break [2021-12-28 04:37:29,752 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_break [2021-12-28 04:37:29,753 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmset [2021-12-28 04:37:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmset [2021-12-28 04:37:29,753 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_tiocmget [2021-12-28 04:37:29,753 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_tiocmget [2021-12-28 04:37:29,754 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-28 04:37:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-28 04:37:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_set_port_private [2021-12-28 04:37:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_set_port_private [2021-12-28 04:37:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_unthrottle [2021-12-28 04:37:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_unthrottle [2021-12-28 04:37:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 04:37:29,758 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 04:37:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:37:29,758 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2021-12-28 04:37:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2021-12-28 04:37:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2021-12-28 04:37:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2021-12-28 04:37:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure mos7840_port_remove [2021-12-28 04:37:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure mos7840_port_remove [2021-12-28 04:37:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:37:29,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:37:29,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:37:30,322 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:37:30,325 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:37:31,470 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:37:35,309 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:37:35,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:37:35,337 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:37:35,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:37:35 BoogieIcfgContainer [2021-12-28 04:37:35,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:37:35,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:37:35,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:37:35,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:37:35,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:37:27" (1/3) ... [2021-12-28 04:37:35,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41913afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:37:35, skipping insertion in model container [2021-12-28 04:37:35,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:37:28" (2/3) ... [2021-12-28 04:37:35,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41913afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:37:35, skipping insertion in model container [2021-12-28 04:37:35,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:37:35" (3/3) ... [2021-12-28 04:37:35,346 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-12-28 04:37:35,350 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:37:35,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:37:35,397 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:37:35,403 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 04:37:35,403 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:37:35,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) [2021-12-28 04:37:35,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-28 04:37:35,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:37:35,456 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:37:35,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:37:35,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:37:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2101310704, now seen corresponding path program 1 times [2021-12-28 04:37:35,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:37:35,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345394986] [2021-12-28 04:37:35,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:37:35,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:37:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:37:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:37:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:37:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:37:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:37:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 04:37:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 04:37:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 04:37:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 04:37:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:37:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 04:37:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-28 04:37:36,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:37:36,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345394986] [2021-12-28 04:37:36,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345394986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:37:36,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:37:36,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:37:36,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260653552] [2021-12-28 04:37:36,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:37:36,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:37:36,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:37:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:37:36,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:37:36,393 INFO L87 Difference]: Start difference. First operand has 1732 states, 1231 states have (on average 1.3899268887083671) internal successors, (1711), 1254 states have internal predecessors, (1711), 435 states have call successors, (435), 65 states have call predecessors, (435), 64 states have return successors, (430), 424 states have call predecessors, (430), 430 states have call successors, (430) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:37:46,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:37:46,608 INFO L93 Difference]: Finished difference Result 3655 states and 5610 transitions. [2021-12-28 04:37:46,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:37:46,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 161 [2021-12-28 04:37:46,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:37:46,636 INFO L225 Difference]: With dead ends: 3655 [2021-12-28 04:37:46,636 INFO L226 Difference]: Without dead ends: 1913 [2021-12-28 04:37:46,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:37:46,664 INFO L933 BasicCegarLoop]: 2442 mSDtfsCounter, 517 mSDsluCounter, 3627 mSDsCounter, 0 mSdLazyCounter, 2450 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 6069 SdHoareTripleChecker+Invalid, 3458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 2450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-12-28 04:37:46,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 6069 Invalid, 3458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 2450 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2021-12-28 04:37:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2021-12-28 04:37:46,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1717. [2021-12-28 04:37:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1717 states, 1223 states have (on average 1.3851185609157808) internal successors, (1694), 1239 states have internal predecessors, (1694), 430 states have call successors, (430), 64 states have call predecessors, (430), 63 states have return successors, (429), 423 states have call predecessors, (429), 429 states have call successors, (429) [2021-12-28 04:37:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1717 states to 1717 states and 2553 transitions. [2021-12-28 04:37:46,820 INFO L78 Accepts]: Start accepts. Automaton has 1717 states and 2553 transitions. Word has length 161 [2021-12-28 04:37:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:37:46,821 INFO L470 AbstractCegarLoop]: Abstraction has 1717 states and 2553 transitions. [2021-12-28 04:37:46,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-28 04:37:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1717 states and 2553 transitions. [2021-12-28 04:37:46,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-28 04:37:46,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:37:46,829 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:37:46,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:37:46,830 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:37:46,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:37:46,830 INFO L85 PathProgramCache]: Analyzing trace with hash 146485736, now seen corresponding path program 1 times [2021-12-28 04:37:46,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:37:46,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534865653] [2021-12-28 04:37:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:37:46,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:37:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:37:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:37:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:37:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:37:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:37:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 04:37:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 04:37:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 04:37:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 04:37:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:37:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 04:37:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-28 04:37:47,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:37:47,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534865653] [2021-12-28 04:37:47,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534865653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:37:47,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:37:47,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:37:47,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490574556] [2021-12-28 04:37:47,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:37:47,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:37:47,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:37:47,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:37:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:37:47,276 INFO L87 Difference]: Start difference. First operand 1717 states and 2553 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-28 04:37:53,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:37:53,441 INFO L93 Difference]: Finished difference Result 3744 states and 5632 transitions. [2021-12-28 04:37:53,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:37:53,442 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 161 [2021-12-28 04:37:53,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:37:53,455 INFO L225 Difference]: With dead ends: 3744 [2021-12-28 04:37:53,456 INFO L226 Difference]: Without dead ends: 2059 [2021-12-28 04:37:53,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:37:53,468 INFO L933 BasicCegarLoop]: 2456 mSDtfsCounter, 1210 mSDsluCounter, 3168 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 1629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1629 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-28 04:37:53,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 5624 Invalid, 3472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1629 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-12-28 04:37:53,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-12-28 04:37:53,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1853. [2021-12-28 04:37:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1325 states have (on average 1.3864150943396227) internal successors, (1837), 1350 states have internal predecessors, (1837), 449 states have call successors, (449), 79 states have call predecessors, (449), 78 states have return successors, (448), 436 states have call predecessors, (448), 448 states have call successors, (448) [2021-12-28 04:37:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 2734 transitions. [2021-12-28 04:37:53,540 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 2734 transitions. Word has length 161 [2021-12-28 04:37:53,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:37:53,542 INFO L470 AbstractCegarLoop]: Abstraction has 1853 states and 2734 transitions. [2021-12-28 04:37:53,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (17), 5 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-28 04:37:53,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 2734 transitions. [2021-12-28 04:37:53,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-28 04:37:53,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:37:53,545 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:37:53,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:37:53,545 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:37:53,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:37:53,546 INFO L85 PathProgramCache]: Analyzing trace with hash 189098090, now seen corresponding path program 1 times [2021-12-28 04:37:53,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:37:53,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352660505] [2021-12-28 04:37:53,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:37:53,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:37:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:37:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:37:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:37:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:37:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:37:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:37:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 04:37:53,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 04:37:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 04:37:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 04:37:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:37:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 04:37:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:53,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:37:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-28 04:37:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:54,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-28 04:37:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:37:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-28 04:37:54,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:37:54,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352660505] [2021-12-28 04:37:54,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352660505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:37:54,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:37:54,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 04:37:54,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305423419] [2021-12-28 04:37:54,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:37:54,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 04:37:54,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:37:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 04:37:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:37:54,021 INFO L87 Difference]: Start difference. First operand 1853 states and 2734 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 04:38:11,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:38:11,177 INFO L93 Difference]: Finished difference Result 9819 states and 15076 transitions. [2021-12-28 04:38:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 04:38:11,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 170 [2021-12-28 04:38:11,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:38:11,212 INFO L225 Difference]: With dead ends: 9819 [2021-12-28 04:38:11,213 INFO L226 Difference]: Without dead ends: 8016 [2021-12-28 04:38:11,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2021-12-28 04:38:11,222 INFO L933 BasicCegarLoop]: 3597 mSDtfsCounter, 12035 mSDsluCounter, 7820 mSDsCounter, 0 mSdLazyCounter, 6990 mSolverCounterSat, 5838 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12922 SdHoareTripleChecker+Valid, 11417 SdHoareTripleChecker+Invalid, 12828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5838 IncrementalHoareTripleChecker+Valid, 6990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:38:11,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12922 Valid, 11417 Invalid, 12828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5838 Valid, 6990 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2021-12-28 04:38:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8016 states. [2021-12-28 04:38:11,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8016 to 7271. [2021-12-28 04:38:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7271 states, 5220 states have (on average 1.389272030651341) internal successors, (7252), 5317 states have internal predecessors, (7252), 1745 states have call successors, (1745), 296 states have call predecessors, (1745), 305 states have return successors, (1903), 1705 states have call predecessors, (1903), 1744 states have call successors, (1903) [2021-12-28 04:38:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7271 states to 7271 states and 10900 transitions. [2021-12-28 04:38:11,468 INFO L78 Accepts]: Start accepts. Automaton has 7271 states and 10900 transitions. Word has length 170 [2021-12-28 04:38:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:38:11,469 INFO L470 AbstractCegarLoop]: Abstraction has 7271 states and 10900 transitions. [2021-12-28 04:38:11,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 04:38:11,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7271 states and 10900 transitions. [2021-12-28 04:38:11,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-28 04:38:11,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:38:11,473 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:38:11,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:38:11,473 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:38:11,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:38:11,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1930991079, now seen corresponding path program 1 times [2021-12-28 04:38:11,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:38:11,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877922215] [2021-12-28 04:38:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:38:11,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:38:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:38:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:38:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:38:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:38:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:38:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:38:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 04:38:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 04:38:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 04:38:11,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 04:38:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 04:38:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 04:38:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:38:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-28 04:38:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-28 04:38:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:38:11,897 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-28 04:38:11,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:38:11,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877922215] [2021-12-28 04:38:11,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877922215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:38:11,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:38:11,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 04:38:11,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060893907] [2021-12-28 04:38:11,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:38:11,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 04:38:11,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:38:11,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 04:38:11,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:38:11,900 INFO L87 Difference]: Start difference. First operand 7271 states and 10900 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)