./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-32_7a-drivers--usb--storage--uas.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-32_7a-drivers--usb--storage--uas.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 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:25:34,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:25:34,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:25:34,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:25:34,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:25:34,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:25:34,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:25:34,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:25:34,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:25:34,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:25:34,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:25:34,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:25:34,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:25:34,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:25:34,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:25:34,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:25:34,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:25:34,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:25:34,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:25:34,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:25:34,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:25:34,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:25:34,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:25:34,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:25:34,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:25:34,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:25:34,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:25:34,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:25:34,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:25:34,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:25:34,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:25:34,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:25:34,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:25:34,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:25:34,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:25:34,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:25:34,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:25:34,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:25:34,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:25:34,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:25:34,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:25:35,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:25:35,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:25:35,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:25:35,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:25:35,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:25:35,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:25:35,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:25:35,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:25:35,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:25:35,029 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:25:35,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:25:35,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:25:35,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:25:35,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:25:35,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:25:35,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:25:35,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:25:35,031 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:25:35,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:25:35,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:25:35,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:25:35,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:25:35,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:25:35,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:25:35,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:25:35,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:25:35,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:25:35,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:25:35,033 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:25:35,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:25:35,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:25:35,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2021-12-28 04:25:35,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:25:35,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:25:35,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:25:35,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:25:35,308 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:25:35,309 INFO L432 ainManager$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-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-12-28 04:25:35,350 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085ef4ff5/bb5a9fc0cefb4b3eb695c6f5b08620b1/FLAGd380de55b [2021-12-28 04:25:35,942 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:25:35,943 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-12-28 04:25:35,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085ef4ff5/bb5a9fc0cefb4b3eb695c6f5b08620b1/FLAGd380de55b [2021-12-28 04:25:36,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/085ef4ff5/bb5a9fc0cefb4b3eb695c6f5b08620b1 [2021-12-28 04:25:36,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:25:36,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:25:36,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:25:36,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:25:36,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:25:36,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:25:36" (1/1) ... [2021-12-28 04:25:36,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@160bab75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:36, skipping insertion in model container [2021-12-28 04:25:36,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:25:36" (1/1) ... [2021-12-28 04:25:36,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:25:36,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:25:37,391 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-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2021-12-28 04:25:37,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:25:37,498 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:25:37,663 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-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2021-12-28 04:25:37,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:25:37,725 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:25:37,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37 WrapperNode [2021-12-28 04:25:37,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:25:37,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:25:37,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:25:37,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:25:37,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:37,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:37,885 INFO L137 Inliner]: procedures = 250, calls = 1509, calls flagged for inlining = 86, calls inlined = 78, statements flattened = 3248 [2021-12-28 04:25:37,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:25:37,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:25:37,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:25:37,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:25:37,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:37,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:37,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:37,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:38,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:38,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:38,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:38,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:25:38,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:25:38,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:25:38,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:25:38,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (1/1) ... [2021-12-28 04:25:38,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:25:38,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:25:38,132 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 04:25:38,156 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 04:25:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-28 04:25:38,169 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-28 04:25:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-28 04:25:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-28 04:25:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2021-12-28 04:25:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2021-12-28 04:25:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:25:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:25:38,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:25:38,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:25:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:25:38,171 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:25:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-28 04:25:38,171 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-28 04:25:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2021-12-28 04:25:38,171 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2021-12-28 04:25:38,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:25:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:25:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-28 04:25:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-28 04:25:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-28 04:25:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-28 04:25:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:25:38,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:25:38,172 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2021-12-28 04:25:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2021-12-28 04:25:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2021-12-28 04:25:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2021-12-28 04:25:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:25:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:25:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:25:38,173 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:25:38,173 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2021-12-28 04:25:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2021-12-28 04:25:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 04:25:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 04:25:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2021-12-28 04:25:38,174 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2021-12-28 04:25:38,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:25:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 04:25:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 04:25:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-12-28 04:25:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-12-28 04:25:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2021-12-28 04:25:38,175 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2021-12-28 04:25:38,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:25:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2021-12-28 04:25:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2021-12-28 04:25:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-28 04:25:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-28 04:25:38,176 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:25:38,176 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:25:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2021-12-28 04:25:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2021-12-28 04:25:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-12-28 04:25:38,177 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-12-28 04:25:38,177 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2021-12-28 04:25:38,178 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2021-12-28 04:25:38,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:25:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:25:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2021-12-28 04:25:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2021-12-28 04:25:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2021-12-28 04:25:38,179 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2021-12-28 04:25:38,179 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 04:25:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 04:25:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-28 04:25:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-28 04:25:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-28 04:25:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-28 04:25:38,180 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 04:25:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 04:25:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2021-12-28 04:25:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2021-12-28 04:25:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-12-28 04:25:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-12-28 04:25:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-28 04:25:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-28 04:25:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-28 04:25:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-28 04:25:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:25:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2021-12-28 04:25:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2021-12-28 04:25:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 04:25:38,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 04:25:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2021-12-28 04:25:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2021-12-28 04:25:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:25:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2021-12-28 04:25:38,183 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2021-12-28 04:25:38,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:25:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2021-12-28 04:25:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2021-12-28 04:25:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2021-12-28 04:25:38,184 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2021-12-28 04:25:38,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 04:25:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 04:25:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 04:25:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 04:25:38,185 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-28 04:25:38,185 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-28 04:25:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2021-12-28 04:25:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2021-12-28 04:25:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-12-28 04:25:38,186 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-12-28 04:25:38,186 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-12-28 04:25:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-12-28 04:25:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:25:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2021-12-28 04:25:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2021-12-28 04:25:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2021-12-28 04:25:38,187 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2021-12-28 04:25:38,187 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:25:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:25:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:25:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:25:38,188 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2021-12-28 04:25:38,188 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2021-12-28 04:25:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:25:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:25:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2021-12-28 04:25:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2021-12-28 04:25:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 04:25:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 04:25:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:25:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 04:25:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 04:25:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-12-28 04:25:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-12-28 04:25:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2021-12-28 04:25:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2021-12-28 04:25:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-28 04:25:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-28 04:25:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2021-12-28 04:25:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2021-12-28 04:25:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2021-12-28 04:25:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2021-12-28 04:25:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-28 04:25:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-28 04:25:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2021-12-28 04:25:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2021-12-28 04:25:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 04:25:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 04:25:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-28 04:25:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-28 04:25:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2021-12-28 04:25:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2021-12-28 04:25:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2021-12-28 04:25:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2021-12-28 04:25:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2021-12-28 04:25:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2021-12-28 04:25:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:25:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2021-12-28 04:25:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2021-12-28 04:25:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-28 04:25:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-28 04:25:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:25:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:25:38,678 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:25:38,679 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:25:38,925 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:25:40,365 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:25:40,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:25:40,375 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:25:40,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:25:40 BoogieIcfgContainer [2021-12-28 04:25:40,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:25:40,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:25:40,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:25:40,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:25:40,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:25:36" (1/3) ... [2021-12-28 04:25:40,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328edcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:25:40, skipping insertion in model container [2021-12-28 04:25:40,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:25:37" (2/3) ... [2021-12-28 04:25:40,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328edcac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:25:40, skipping insertion in model container [2021-12-28 04:25:40,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:25:40" (3/3) ... [2021-12-28 04:25:40,382 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-12-28 04:25:40,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:25:40,386 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:25:40,416 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:25:40,420 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 04:25:40,420 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:25:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) [2021-12-28 04:25:40,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 04:25:40,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:25:40,462 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:40,463 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:25:40,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:25:40,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1451204405, now seen corresponding path program 1 times [2021-12-28 04:25:40,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:25:40,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667020242] [2021-12-28 04:25:40,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:25:40,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:25:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:25:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:40,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:25:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:41,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:25:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:25:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-28 04:25:41,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:25:41,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667020242] [2021-12-28 04:25:41,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667020242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:25:41,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:25:41,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 04:25:41,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368083411] [2021-12-28 04:25:41,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:25:41,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 04:25:41,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:25:41,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 04:25:41,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 04:25:41,126 INFO L87 Difference]: Start difference. First operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-28 04:25:43,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:25:43,701 INFO L93 Difference]: Finished difference Result 2518 states and 3693 transitions. [2021-12-28 04:25:43,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 04:25:43,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2021-12-28 04:25:43,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:25:43,737 INFO L225 Difference]: With dead ends: 2518 [2021-12-28 04:25:43,738 INFO L226 Difference]: Without dead ends: 1408 [2021-12-28 04:25:43,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 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 04:25:43,749 INFO L933 BasicCegarLoop]: 1405 mSDtfsCounter, 1202 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:25:43,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 2536 Invalid, 1998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-28 04:25:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2021-12-28 04:25:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1089. [2021-12-28 04:25:43,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 764 states have (on average 1.331151832460733) internal successors, (1017), 795 states have internal predecessors, (1017), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2021-12-28 04:25:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1521 transitions. [2021-12-28 04:25:43,865 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1521 transitions. Word has length 72 [2021-12-28 04:25:43,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:25:43,866 INFO L470 AbstractCegarLoop]: Abstraction has 1089 states and 1521 transitions. [2021-12-28 04:25:43,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-28 04:25:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1521 transitions. [2021-12-28 04:25:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 04:25:43,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:25:43,869 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:43,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:25:43,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:25:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:25:43,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1504907311, now seen corresponding path program 1 times [2021-12-28 04:25:43,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:25:43,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763939175] [2021-12-28 04:25:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:25:43,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:25:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:25:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:25:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:25:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:25:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:44,104 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-28 04:25:44,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:25:44,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763939175] [2021-12-28 04:25:44,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763939175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:25:44,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:25:44,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:25:44,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787981840] [2021-12-28 04:25:44,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:25:44,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:25:44,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:25:44,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:25:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:25:44,108 INFO L87 Difference]: Start difference. First operand 1089 states and 1521 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 04:25:49,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:25:49,573 INFO L93 Difference]: Finished difference Result 3860 states and 5570 transitions. [2021-12-28 04:25:49,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:25:49,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 72 [2021-12-28 04:25:49,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:25:49,591 INFO L225 Difference]: With dead ends: 3860 [2021-12-28 04:25:49,591 INFO L226 Difference]: Without dead ends: 2784 [2021-12-28 04:25:49,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:25:49,599 INFO L933 BasicCegarLoop]: 1566 mSDtfsCounter, 3599 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 2047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3780 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2047 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:25:49,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3780 Valid, 4267 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2047 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-28 04:25:49,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2021-12-28 04:25:49,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2142. [2021-12-28 04:25:49,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2142 states, 1504 states have (on average 1.331781914893617) internal successors, (2003), 1561 states have internal predecessors, (2003), 499 states have call successors, (499), 139 states have call predecessors, (499), 138 states have return successors, (493), 477 states have call predecessors, (493), 493 states have call successors, (493) [2021-12-28 04:25:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2142 states to 2142 states and 2995 transitions. [2021-12-28 04:25:49,694 INFO L78 Accepts]: Start accepts. Automaton has 2142 states and 2995 transitions. Word has length 72 [2021-12-28 04:25:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:25:49,695 INFO L470 AbstractCegarLoop]: Abstraction has 2142 states and 2995 transitions. [2021-12-28 04:25:49,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-28 04:25:49,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2142 states and 2995 transitions. [2021-12-28 04:25:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-28 04:25:49,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:25:49,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:49,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:25:49,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:25:49,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:25:49,702 INFO L85 PathProgramCache]: Analyzing trace with hash -508395570, now seen corresponding path program 1 times [2021-12-28 04:25:49,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:25:49,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448479060] [2021-12-28 04:25:49,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:25:49,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:25:49,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:25:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:25:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:25:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:25:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 04:25:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-28 04:25:49,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:25:49,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448479060] [2021-12-28 04:25:49,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448479060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:25:49,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:25:49,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:25:49,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970061964] [2021-12-28 04:25:49,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:25:49,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:25:49,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:25:49,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:25:49,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:25:49,932 INFO L87 Difference]: Start difference. First operand 2142 states and 2995 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:25:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:25:53,845 INFO L93 Difference]: Finished difference Result 7343 states and 10595 transitions. [2021-12-28 04:25:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:25:53,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 81 [2021-12-28 04:25:53,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:25:53,873 INFO L225 Difference]: With dead ends: 7343 [2021-12-28 04:25:53,874 INFO L226 Difference]: Without dead ends: 5224 [2021-12-28 04:25:53,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 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 04:25:53,883 INFO L933 BasicCegarLoop]: 1754 mSDtfsCounter, 4169 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 2584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4308 SdHoareTripleChecker+Valid, 3429 SdHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2584 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-28 04:25:53,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4308 Valid, 3429 Invalid, 4338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2584 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-28 04:25:53,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2021-12-28 04:25:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 4147. [2021-12-28 04:25:54,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 2900 states have (on average 1.3348275862068966) internal successors, (3871), 3023 states have internal predecessors, (3871), 970 states have call successors, (970), 263 states have call predecessors, (970), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-28 04:25:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 5875 transitions. [2021-12-28 04:25:54,028 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 5875 transitions. Word has length 81 [2021-12-28 04:25:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:25:54,029 INFO L470 AbstractCegarLoop]: Abstraction has 4147 states and 5875 transitions. [2021-12-28 04:25:54,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:25:54,029 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 5875 transitions. [2021-12-28 04:25:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-28 04:25:54,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:25:54,034 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 04:25:54,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:25:54,035 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:25:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:25:54,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1513391935, now seen corresponding path program 1 times [2021-12-28 04:25:54,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:25:54,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055040505] [2021-12-28 04:25:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:25:54,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:25:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:25:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:25:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:25:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:54,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:25:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:25:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:54,300 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 04:25:54,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:25:54,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055040505] [2021-12-28 04:25:54,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055040505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:25:54,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:25:54,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:25:54,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304303330] [2021-12-28 04:25:54,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:25:54,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:25:54,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:25:54,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:25:54,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:25:54,305 INFO L87 Difference]: Start difference. First operand 4147 states and 5875 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-28 04:25:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:25:56,360 INFO L93 Difference]: Finished difference Result 5205 states and 7604 transitions. [2021-12-28 04:25:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:25:56,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 92 [2021-12-28 04:25:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:25:56,384 INFO L225 Difference]: With dead ends: 5205 [2021-12-28 04:25:56,385 INFO L226 Difference]: Without dead ends: 5194 [2021-12-28 04:25:56,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 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 04:25:56,389 INFO L933 BasicCegarLoop]: 1388 mSDtfsCounter, 3121 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 1669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1669 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 04:25:56,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3280 Valid, 2038 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1669 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 04:25:56,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2021-12-28 04:25:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 4147. [2021-12-28 04:25:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 2900 states have (on average 1.3341379310344827) internal successors, (3869), 3023 states have internal predecessors, (3869), 970 states have call successors, (970), 263 states have call predecessors, (970), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-28 04:25:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 5873 transitions. [2021-12-28 04:25:56,547 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 5873 transitions. Word has length 92 [2021-12-28 04:25:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:25:56,549 INFO L470 AbstractCegarLoop]: Abstraction has 4147 states and 5873 transitions. [2021-12-28 04:25:56,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-28 04:25:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 5873 transitions. [2021-12-28 04:25:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-28 04:25:56,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:25:56,551 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 04:25:56,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:25:56,551 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:25:56,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:25:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1456133633, now seen corresponding path program 1 times [2021-12-28 04:25:56,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:25:56,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323591551] [2021-12-28 04:25:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:25:56,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:25:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:25:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:25:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:25:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:56,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:25:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:25:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:25:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:25:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:25:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 04:25:56,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:25:56,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323591551] [2021-12-28 04:25:56,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323591551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:25:56,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:25:56,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:25:56,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75749597] [2021-12-28 04:25:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:25:56,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:25:56,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:25:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:25:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:25:56,769 INFO L87 Difference]: Start difference. First operand 4147 states and 5873 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:25:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:25:59,775 INFO L93 Difference]: Finished difference Result 5185 states and 7577 transitions. [2021-12-28 04:25:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:25:59,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 92 [2021-12-28 04:25:59,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:25:59,798 INFO L225 Difference]: With dead ends: 5185 [2021-12-28 04:25:59,798 INFO L226 Difference]: Without dead ends: 5182 [2021-12-28 04:25:59,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:25:59,802 INFO L933 BasicCegarLoop]: 1382 mSDtfsCounter, 2494 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 1157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:25:59,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2652 Valid, 3008 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1157 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-28 04:25:59,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2021-12-28 04:25:59,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 4146. [2021-12-28 04:25:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4146 states, 2900 states have (on average 1.333793103448276) internal successors, (3868), 3022 states have internal predecessors, (3868), 969 states have call successors, (969), 263 states have call predecessors, (969), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-28 04:25:59,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 5871 transitions. [2021-12-28 04:25:59,935 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 5871 transitions. Word has length 92 [2021-12-28 04:25:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:25:59,935 INFO L470 AbstractCegarLoop]: Abstraction has 4146 states and 5871 transitions. [2021-12-28 04:25:59,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:25:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 5871 transitions. [2021-12-28 04:25:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-28 04:25:59,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:25:59,937 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 04:25:59,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 04:25:59,937 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:25:59,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:25:59,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2104052202, now seen corresponding path program 1 times [2021-12-28 04:25:59,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:25:59,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857321011] [2021-12-28 04:25:59,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:25:59,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:26:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:26:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:26:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:26:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:26:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:26:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 04:26:00,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:26:00,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857321011] [2021-12-28 04:26:00,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857321011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:26:00,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:26:00,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:26:00,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005360169] [2021-12-28 04:26:00,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:26:00,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:26:00,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:26:00,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:26:00,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:26:00,158 INFO L87 Difference]: Start difference. First operand 4146 states and 5871 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:26:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:26:02,849 INFO L93 Difference]: Finished difference Result 5184 states and 7575 transitions. [2021-12-28 04:26:02,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:26:02,850 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2021-12-28 04:26:02,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:26:02,874 INFO L225 Difference]: With dead ends: 5184 [2021-12-28 04:26:02,874 INFO L226 Difference]: Without dead ends: 5181 [2021-12-28 04:26:02,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:26:02,877 INFO L933 BasicCegarLoop]: 1383 mSDtfsCounter, 2494 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 1168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2653 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 2267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1168 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:26:02,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2653 Valid, 2520 Invalid, 2267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1168 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-28 04:26:02,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5181 states. [2021-12-28 04:26:03,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5181 to 4145. [2021-12-28 04:26:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 2900 states have (on average 1.333448275862069) internal successors, (3867), 3021 states have internal predecessors, (3867), 968 states have call successors, (968), 263 states have call predecessors, (968), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-28 04:26:03,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 5869 transitions. [2021-12-28 04:26:03,027 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 5869 transitions. Word has length 93 [2021-12-28 04:26:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:26:03,028 INFO L470 AbstractCegarLoop]: Abstraction has 4145 states and 5869 transitions. [2021-12-28 04:26:03,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:26:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 5869 transitions. [2021-12-28 04:26:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-28 04:26:03,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:26:03,029 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 04:26:03,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 04:26:03,030 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:26:03,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:26:03,030 INFO L85 PathProgramCache]: Analyzing trace with hash 800668258, now seen corresponding path program 1 times [2021-12-28 04:26:03,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:26:03,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362615002] [2021-12-28 04:26:03,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:26:03,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:26:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:26:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:26:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:26:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:26:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:26:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 04:26:03,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:26:03,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362615002] [2021-12-28 04:26:03,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362615002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:26:03,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:26:03,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:26:03,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545675176] [2021-12-28 04:26:03,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:26:03,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:26:03,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:26:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:26:03,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:26:03,210 INFO L87 Difference]: Start difference. First operand 4145 states and 5869 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:26:05,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:26:05,650 INFO L93 Difference]: Finished difference Result 5183 states and 7573 transitions. [2021-12-28 04:26:05,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:26:05,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 94 [2021-12-28 04:26:05,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:26:05,673 INFO L225 Difference]: With dead ends: 5183 [2021-12-28 04:26:05,673 INFO L226 Difference]: Without dead ends: 5180 [2021-12-28 04:26:05,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 04:26:05,677 INFO L933 BasicCegarLoop]: 1371 mSDtfsCounter, 2598 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 1228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2755 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 2317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1228 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-28 04:26:05,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2755 Valid, 2478 Invalid, 2317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1228 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-28 04:26:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2021-12-28 04:26:05,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 4144. [2021-12-28 04:26:05,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4144 states, 2900 states have (on average 1.3331034482758621) internal successors, (3866), 3020 states have internal predecessors, (3866), 967 states have call successors, (967), 263 states have call predecessors, (967), 276 states have return successors, (1034), 932 states have call predecessors, (1034), 964 states have call successors, (1034) [2021-12-28 04:26:05,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4144 states to 4144 states and 5867 transitions. [2021-12-28 04:26:05,830 INFO L78 Accepts]: Start accepts. Automaton has 4144 states and 5867 transitions. Word has length 94 [2021-12-28 04:26:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:26:05,830 INFO L470 AbstractCegarLoop]: Abstraction has 4144 states and 5867 transitions. [2021-12-28 04:26:05,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:26:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 4144 states and 5867 transitions. [2021-12-28 04:26:05,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-28 04:26:05,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:26:05,833 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 04:26:05,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 04:26:05,833 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:26:05,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:26:05,833 INFO L85 PathProgramCache]: Analyzing trace with hash -949523475, now seen corresponding path program 1 times [2021-12-28 04:26:05,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:26:05,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300607354] [2021-12-28 04:26:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:26:05,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:26:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:05,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:26:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:05,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:26:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:26:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:26:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:26:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 04:26:06,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:26:06,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300607354] [2021-12-28 04:26:06,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300607354] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:26:06,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:26:06,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:26:06,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534260084] [2021-12-28 04:26:06,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:26:06,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:26:06,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:26:06,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:26:06,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:26:06,068 INFO L87 Difference]: Start difference. First operand 4144 states and 5867 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:26:10,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:26:10,330 INFO L93 Difference]: Finished difference Result 14438 states and 20932 transitions. [2021-12-28 04:26:10,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:26:10,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 95 [2021-12-28 04:26:10,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:26:10,409 INFO L225 Difference]: With dead ends: 14438 [2021-12-28 04:26:10,410 INFO L226 Difference]: Without dead ends: 10309 [2021-12-28 04:26:10,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 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 04:26:10,422 INFO L933 BasicCegarLoop]: 1610 mSDtfsCounter, 3575 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 2894 mSolverCounterSat, 1986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 4880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1986 IncrementalHoareTripleChecker+Valid, 2894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:26:10,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3756 Valid, 4395 Invalid, 4880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1986 Valid, 2894 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-28 04:26:10,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10309 states. [2021-12-28 04:26:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10309 to 8231. [2021-12-28 04:26:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8231 states, 5757 states have (on average 1.3338544380753865) internal successors, (7679), 5996 states have internal predecessors, (7679), 1925 states have call successors, (1925), 523 states have call predecessors, (1925), 548 states have return successors, (2062), 1855 states have call predecessors, (2062), 1922 states have call successors, (2062) [2021-12-28 04:26:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 11666 transitions. [2021-12-28 04:26:10,705 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 11666 transitions. Word has length 95 [2021-12-28 04:26:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:26:10,705 INFO L470 AbstractCegarLoop]: Abstraction has 8231 states and 11666 transitions. [2021-12-28 04:26:10,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-28 04:26:10,706 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 11666 transitions. [2021-12-28 04:26:10,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-28 04:26:10,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:26:10,715 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:10,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 04:26:10,715 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:26:10,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:26:10,715 INFO L85 PathProgramCache]: Analyzing trace with hash 476400148, now seen corresponding path program 1 times [2021-12-28 04:26:10,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:26:10,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527580078] [2021-12-28 04:26:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:26:10,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:26:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:26:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:26:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:26:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:26:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:26:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 04:26:10,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 04:26:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:26:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 04:26:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:10,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 04:26:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 04:26:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 04:26:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:11,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-28 04:26:11,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:11,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 04:26:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-28 04:26:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-28 04:26:11,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:26:11,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527580078] [2021-12-28 04:26:11,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527580078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:26:11,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:26:11,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 04:26:11,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004605334] [2021-12-28 04:26:11,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:26:11,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 04:26:11,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:26:11,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 04:26:11,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-28 04:26:11,037 INFO L87 Difference]: Start difference. First operand 8231 states and 11666 transitions. Second operand has 9 states, 8 states have (on average 11.625) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 04:26:17,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:26:17,500 INFO L93 Difference]: Finished difference Result 28672 states and 42244 transitions. [2021-12-28 04:26:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 04:26:17,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 184 [2021-12-28 04:26:17,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:26:17,580 INFO L225 Difference]: With dead ends: 28672 [2021-12-28 04:26:17,580 INFO L226 Difference]: Without dead ends: 20464 [2021-12-28 04:26:17,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-12-28 04:26:17,613 INFO L933 BasicCegarLoop]: 1888 mSDtfsCounter, 6629 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 4214 mSolverCounterSat, 5357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6783 SdHoareTripleChecker+Valid, 3659 SdHoareTripleChecker+Invalid, 9571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5357 IncrementalHoareTripleChecker+Valid, 4214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:26:17,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6783 Valid, 3659 Invalid, 9571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5357 Valid, 4214 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-28 04:26:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20464 states. [2021-12-28 04:26:18,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20464 to 15567. [2021-12-28 04:26:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15567 states, 10790 states have (on average 1.325023169601483) internal successors, (14297), 11227 states have internal predecessors, (14297), 3725 states have call successors, (3725), 920 states have call predecessors, (3725), 1051 states have return successors, (4350), 3683 states have call predecessors, (4350), 3722 states have call successors, (4350) [2021-12-28 04:26:18,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15567 states to 15567 states and 22372 transitions. [2021-12-28 04:26:18,366 INFO L78 Accepts]: Start accepts. Automaton has 15567 states and 22372 transitions. Word has length 184 [2021-12-28 04:26:18,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:26:18,366 INFO L470 AbstractCegarLoop]: Abstraction has 15567 states and 22372 transitions. [2021-12-28 04:26:18,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.625) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-28 04:26:18,367 INFO L276 IsEmpty]: Start isEmpty. Operand 15567 states and 22372 transitions. [2021-12-28 04:26:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-28 04:26:18,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:26:18,389 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:18,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 04:26:18,389 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:26:18,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:26:18,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1665890952, now seen corresponding path program 1 times [2021-12-28 04:26:18,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:26:18,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503576358] [2021-12-28 04:26:18,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:26:18,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:26:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:26:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:26:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:26:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:26:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:26:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 04:26:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 04:26:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 04:26:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 04:26:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 04:26:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 04:26:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 04:26:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-28 04:26:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-28 04:26:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-28 04:26:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:18,678 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-28 04:26:18,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:26:18,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503576358] [2021-12-28 04:26:18,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503576358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:26:18,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:26:18,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 04:26:18,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374399680] [2021-12-28 04:26:18,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:26:18,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 04:26:18,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:26:18,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 04:26:18,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:26:18,680 INFO L87 Difference]: Start difference. First operand 15567 states and 22372 transitions. Second operand has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-28 04:26:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:26:25,632 INFO L93 Difference]: Finished difference Result 40432 states and 60707 transitions. [2021-12-28 04:26:25,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 04:26:25,633 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 207 [2021-12-28 04:26:25,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:26:25,756 INFO L225 Difference]: With dead ends: 40432 [2021-12-28 04:26:25,756 INFO L226 Difference]: Without dead ends: 24892 [2021-12-28 04:26:25,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-12-28 04:26:25,816 INFO L933 BasicCegarLoop]: 1841 mSDtfsCounter, 4201 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 6174 mSolverCounterSat, 2896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4364 SdHoareTripleChecker+Valid, 5663 SdHoareTripleChecker+Invalid, 9070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2896 IncrementalHoareTripleChecker+Valid, 6174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:26:25,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4364 Valid, 5663 Invalid, 9070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2896 Valid, 6174 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-28 04:26:25,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24892 states. [2021-12-28 04:26:26,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24892 to 15583. [2021-12-28 04:26:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15583 states, 10806 states have (on average 1.3245419211549139) internal successors, (14313), 11243 states have internal predecessors, (14313), 3725 states have call successors, (3725), 920 states have call predecessors, (3725), 1051 states have return successors, (4350), 3683 states have call predecessors, (4350), 3722 states have call successors, (4350) [2021-12-28 04:26:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15583 states to 15583 states and 22388 transitions. [2021-12-28 04:26:26,806 INFO L78 Accepts]: Start accepts. Automaton has 15583 states and 22388 transitions. Word has length 207 [2021-12-28 04:26:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:26:26,806 INFO L470 AbstractCegarLoop]: Abstraction has 15583 states and 22388 transitions. [2021-12-28 04:26:26,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (19), 8 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-28 04:26:26,807 INFO L276 IsEmpty]: Start isEmpty. Operand 15583 states and 22388 transitions. [2021-12-28 04:26:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-28 04:26:26,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:26:26,828 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:26,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 04:26:26,829 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:26:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:26:26,829 INFO L85 PathProgramCache]: Analyzing trace with hash -505516454, now seen corresponding path program 1 times [2021-12-28 04:26:26,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:26:26,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140370615] [2021-12-28 04:26:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:26:26,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:26:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:26:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:26:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:26:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:27,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 04:26:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 04:26:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:26:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 04:26:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 04:26:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 04:26:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 04:26:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 04:26:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 04:26:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-28 04:26:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 04:26:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:26:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-28 04:26:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-28 04:26:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-28 04:26:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:26:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-28 04:26:27,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:26:27,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140370615] [2021-12-28 04:26:27,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140370615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:26:27,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:26:27,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 04:26:27,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783981153] [2021-12-28 04:26:27,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:26:27,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 04:26:27,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:26:27,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 04:26:27,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:26:27,163 INFO L87 Difference]: Start difference. First operand 15583 states and 22388 transitions. Second operand has 11 states, 10 states have (on average 13.5) internal successors, (135), 5 states have internal predecessors, (135), 3 states have call successors, (20), 8 states have call predecessors, (20), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19)