./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--hwmon--abituguru3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.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 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:04:43,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:04:43,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:04:43,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:04:43,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:04:43,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:04:43,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:04:43,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:04:43,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:04:43,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:04:43,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:04:43,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:04:43,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:04:43,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:04:43,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:04:43,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:04:43,807 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:04:43,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:04:43,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:04:43,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:04:43,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:04:43,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:04:43,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:04:43,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:04:43,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:04:43,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:04:43,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:04:43,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:04:43,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:04:43,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:04:43,823 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:04:43,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:04:43,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:04:43,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:04:43,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:04:43,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:04:43,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:04:43,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:04:43,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:04:43,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:04:43,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:04:43,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:04:43,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:04:43,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:04:43,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:04:43,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:04:43,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:04:43,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:04:43,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:04:43,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:04:43,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:04:43,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:04:43,861 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:04:43,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:04:43,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2021-12-14 18:04:44,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:04:44,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:04:44,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:04:44,059 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:04:44,062 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:04:44,063 INFO L432 ainManager$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--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-12-14 18:04:44,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a4631269/b23d4a8654cc4a0792c34fb863a7c166/FLAGf50bf73ff [2021-12-14 18:04:44,736 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:04:44,736 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--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-12-14 18:04:44,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a4631269/b23d4a8654cc4a0792c34fb863a7c166/FLAGf50bf73ff [2021-12-14 18:04:44,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a4631269/b23d4a8654cc4a0792c34fb863a7c166 [2021-12-14 18:04:44,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:04:44,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:04:44,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:04:44,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:04:44,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:04:44,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:04:44" (1/1) ... [2021-12-14 18:04:44,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6125686c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:44, skipping insertion in model container [2021-12-14 18:04:44,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:04:44" (1/1) ... [2021-12-14 18:04:44,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:04:45,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:04:45,924 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--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-12-14 18:04:45,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:04:46,055 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:04:46,272 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--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-12-14 18:04:46,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:04:46,421 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:04:46,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46 WrapperNode [2021-12-14 18:04:46,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:04:46,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:04:46,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:04:46,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:04:46,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,720 INFO L137 Inliner]: procedures = 165, calls = 5249, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 6390 [2021-12-14 18:04:46,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:04:46,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:04:46,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:04:46,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:04:46,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:04:46,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:04:46,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:04:46,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:04:46,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (1/1) ... [2021-12-14 18:04:46,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:04:46,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:04:46,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 18:04:46,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 18:04:47,015 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2021-12-14 18:04:47,016 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2021-12-14 18:04:47,016 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 18:04:47,016 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 18:04:47,016 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2021-12-14 18:04:47,016 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2021-12-14 18:04:47,016 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-14 18:04:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-14 18:04:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-12-14 18:04:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-12-14 18:04:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_remove [2021-12-14 18:04:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_remove [2021-12-14 18:04:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2021-12-14 18:04:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2021-12-14 18:04:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:04:47,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:04:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:04:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:04:47,018 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:04:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2021-12-14 18:04:47,018 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2021-12-14 18:04:47,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:04:47,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:04:47,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:04:47,019 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 18:04:47,019 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 18:04:47,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:04:47,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:04:47,019 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_probe [2021-12-14 18:04:47,019 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_probe [2021-12-14 18:04:47,019 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-14 18:04:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-14 18:04:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2021-12-14 18:04:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2021-12-14 18:04:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:04:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:04:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2021-12-14 18:04:47,020 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2021-12-14 18:04:47,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:04:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:04:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:04:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:04:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2021-12-14 18:04:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2021-12-14 18:04:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:04:47,021 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-12-14 18:04:47,021 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-12-14 18:04:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 18:04:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 18:04:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:04:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:04:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:04:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2021-12-14 18:04:47,022 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2021-12-14 18:04:47,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:04:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-14 18:04:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-14 18:04:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:04:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:04:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2021-12-14 18:04:47,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2021-12-14 18:04:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-12-14 18:04:47,023 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-14 18:04:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-14 18:04:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-14 18:04:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-14 18:04:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:04:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-14 18:04:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-14 18:04:47,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:04:47,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:04:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2021-12-14 18:04:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2021-12-14 18:04:47,025 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 18:04:47,025 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 18:04:47,233 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:04:47,235 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:04:49,751 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:04:56,728 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:04:56,736 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:04:56,736 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:04:56,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:04:56 BoogieIcfgContainer [2021-12-14 18:04:56,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:04:56,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:04:56,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:04:56,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:04:56,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:04:44" (1/3) ... [2021-12-14 18:04:56,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ec8f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:04:56, skipping insertion in model container [2021-12-14 18:04:56,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:46" (2/3) ... [2021-12-14 18:04:56,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ec8f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:04:56, skipping insertion in model container [2021-12-14 18:04:56,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:04:56" (3/3) ... [2021-12-14 18:04:56,743 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-12-14 18:04:56,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:04:56,747 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:04:56,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:04:56,782 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 18:04:56,783 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:04:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand has 559 states, 426 states have (on average 1.4366197183098592) internal successors, (612), 439 states have internal predecessors, (612), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-14 18:04:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-14 18:04:56,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:56,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:56,805 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:56,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1286543678, now seen corresponding path program 1 times [2021-12-14 18:04:56,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:56,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370250062] [2021-12-14 18:04:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:56,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:57,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:04:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:04:57,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:57,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370250062] [2021-12-14 18:04:57,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370250062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:57,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:57,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 18:04:57,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422260882] [2021-12-14 18:04:57,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:57,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 18:04:57,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:57,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 18:04:57,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 18:04:57,523 INFO L87 Difference]: Start difference. First operand has 559 states, 426 states have (on average 1.4366197183098592) internal successors, (612), 439 states have internal predecessors, (612), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:57,900 INFO L93 Difference]: Finished difference Result 1560 states and 2283 transitions. [2021-12-14 18:04:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 18:04:57,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-14 18:04:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:57,917 INFO L225 Difference]: With dead ends: 1560 [2021-12-14 18:04:57,917 INFO L226 Difference]: Without dead ends: 987 [2021-12-14 18:04:57,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 18:04:57,932 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 616 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:57,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1640 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 18:04:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-12-14 18:04:58,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 973. [2021-12-14 18:04:58,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 740 states have (on average 1.4) internal successors, (1036), 751 states have internal predecessors, (1036), 176 states have call successors, (176), 57 states have call predecessors, (176), 56 states have return successors, (171), 170 states have call predecessors, (171), 171 states have call successors, (171) [2021-12-14 18:04:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1383 transitions. [2021-12-14 18:04:58,026 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1383 transitions. Word has length 22 [2021-12-14 18:04:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:58,027 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1383 transitions. [2021-12-14 18:04:58,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:58,027 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1383 transitions. [2021-12-14 18:04:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 18:04:58,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:58,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:58,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:04:58,029 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:58,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:58,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1089981821, now seen corresponding path program 1 times [2021-12-14 18:04:58,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:58,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66828189] [2021-12-14 18:04:58,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:58,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:58,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:04:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:58,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:04:58,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:58,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66828189] [2021-12-14 18:04:58,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66828189] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:58,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:58,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 18:04:58,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553617512] [2021-12-14 18:04:58,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:58,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 18:04:58,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:58,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 18:04:58,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 18:04:58,495 INFO L87 Difference]: Start difference. First operand 973 states and 1383 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:58,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:58,755 INFO L93 Difference]: Finished difference Result 2750 states and 3913 transitions. [2021-12-14 18:04:58,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 18:04:58,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-14 18:04:58,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:58,763 INFO L225 Difference]: With dead ends: 2750 [2021-12-14 18:04:58,763 INFO L226 Difference]: Without dead ends: 1780 [2021-12-14 18:04:58,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 18:04:58,767 INFO L933 BasicCegarLoop]: 1342 mSDtfsCounter, 757 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:58,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 2023 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 18:04:58,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2021-12-14 18:04:58,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1771. [2021-12-14 18:04:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1340 states have (on average 1.4014925373134328) internal successors, (1878), 1356 states have internal predecessors, (1878), 323 states have call successors, (323), 108 states have call predecessors, (323), 107 states have return successors, (318), 318 states have call predecessors, (318), 318 states have call successors, (318) [2021-12-14 18:04:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2519 transitions. [2021-12-14 18:04:58,808 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2519 transitions. Word has length 21 [2021-12-14 18:04:58,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:58,808 INFO L470 AbstractCegarLoop]: Abstraction has 1771 states and 2519 transitions. [2021-12-14 18:04:58,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:58,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2519 transitions. [2021-12-14 18:04:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 18:04:58,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:58,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:58,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:04:58,811 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2140487856, now seen corresponding path program 1 times [2021-12-14 18:04:58,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:58,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029026702] [2021-12-14 18:04:58,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:58,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:04:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:04:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:59,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:04:59,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:59,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029026702] [2021-12-14 18:04:59,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029026702] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:59,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:59,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:04:59,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515109680] [2021-12-14 18:04:59,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:59,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:04:59,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:04:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:04:59,233 INFO L87 Difference]: Start difference. First operand 1771 states and 2519 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 18:05:00,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:00,649 INFO L93 Difference]: Finished difference Result 4844 states and 7178 transitions. [2021-12-14 18:05:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 18:05:00,649 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-14 18:05:00,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:00,664 INFO L225 Difference]: With dead ends: 4844 [2021-12-14 18:05:00,665 INFO L226 Difference]: Without dead ends: 3076 [2021-12-14 18:05:00,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-14 18:05:00,677 INFO L933 BasicCegarLoop]: 1337 mSDtfsCounter, 915 mSDsluCounter, 5375 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 6712 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:00,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 6712 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 18:05:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-12-14 18:05:00,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1793. [2021-12-14 18:05:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1358 states have (on average 1.4005891016200294) internal successors, (1902), 1374 states have internal predecessors, (1902), 327 states have call successors, (327), 108 states have call predecessors, (327), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2021-12-14 18:05:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2551 transitions. [2021-12-14 18:05:00,834 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2551 transitions. Word has length 32 [2021-12-14 18:05:00,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:00,834 INFO L470 AbstractCegarLoop]: Abstraction has 1793 states and 2551 transitions. [2021-12-14 18:05:00,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 18:05:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2551 transitions. [2021-12-14 18:05:00,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-14 18:05:00,836 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:00,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:05:00,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:05:00,836 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:00,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1935624722, now seen corresponding path program 1 times [2021-12-14 18:05:00,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:00,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934807087] [2021-12-14 18:05:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:00,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:01,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:05:01,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:01,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934807087] [2021-12-14 18:05:01,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934807087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:01,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:01,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 18:05:01,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712254882] [2021-12-14 18:05:01,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:01,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 18:05:01,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 18:05:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 18:05:01,282 INFO L87 Difference]: Start difference. First operand 1793 states and 2551 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 18:05:01,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:01,799 INFO L93 Difference]: Finished difference Result 1877 states and 2700 transitions. [2021-12-14 18:05:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:05:01,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-14 18:05:01,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:01,810 INFO L225 Difference]: With dead ends: 1877 [2021-12-14 18:05:01,810 INFO L226 Difference]: Without dead ends: 1874 [2021-12-14 18:05:01,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:05:01,813 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 805 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:01,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 1240 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 18:05:01,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2021-12-14 18:05:01,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1792. [2021-12-14 18:05:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1358 states have (on average 1.3998527245949925) internal successors, (1901), 1373 states have internal predecessors, (1901), 326 states have call successors, (326), 108 states have call predecessors, (326), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2021-12-14 18:05:01,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2549 transitions. [2021-12-14 18:05:01,922 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2549 transitions. Word has length 32 [2021-12-14 18:05:01,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:01,923 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2549 transitions. [2021-12-14 18:05:01,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 18:05:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2549 transitions. [2021-12-14 18:05:01,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-14 18:05:01,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:01,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:05:01,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:05:01,925 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash 125104557, now seen corresponding path program 1 times [2021-12-14 18:05:01,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:01,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046902720] [2021-12-14 18:05:01,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:01,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:02,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:05:02,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:02,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046902720] [2021-12-14 18:05:02,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046902720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:02,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:02,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 18:05:02,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704817252] [2021-12-14 18:05:02,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:02,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 18:05:02,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:02,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 18:05:02,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 18:05:02,298 INFO L87 Difference]: Start difference. First operand 1792 states and 2549 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 18:05:02,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:02,963 INFO L93 Difference]: Finished difference Result 1876 states and 2698 transitions. [2021-12-14 18:05:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:05:02,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-14 18:05:02,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:02,970 INFO L225 Difference]: With dead ends: 1876 [2021-12-14 18:05:02,970 INFO L226 Difference]: Without dead ends: 1873 [2021-12-14 18:05:02,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:05:02,971 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 802 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:02,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1237 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 18:05:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2021-12-14 18:05:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1791. [2021-12-14 18:05:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1358 states have (on average 1.3991163475699557) internal successors, (1900), 1372 states have internal predecessors, (1900), 325 states have call successors, (325), 108 states have call predecessors, (325), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2021-12-14 18:05:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2547 transitions. [2021-12-14 18:05:03,018 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2547 transitions. Word has length 33 [2021-12-14 18:05:03,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:03,019 INFO L470 AbstractCegarLoop]: Abstraction has 1791 states and 2547 transitions. [2021-12-14 18:05:03,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 18:05:03,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2547 transitions. [2021-12-14 18:05:03,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-14 18:05:03,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:03,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:05:03,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 18:05:03,020 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:03,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:03,021 INFO L85 PathProgramCache]: Analyzing trace with hash -416792367, now seen corresponding path program 1 times [2021-12-14 18:05:03,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:03,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925495856] [2021-12-14 18:05:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:03,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:03,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:05:03,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:03,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925495856] [2021-12-14 18:05:03,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925495856] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:03,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:03,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 18:05:03,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395972850] [2021-12-14 18:05:03,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:03,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 18:05:03,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:03,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 18:05:03,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 18:05:03,333 INFO L87 Difference]: Start difference. First operand 1791 states and 2547 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 18:05:04,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:04,165 INFO L93 Difference]: Finished difference Result 5089 states and 7303 transitions. [2021-12-14 18:05:04,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:05:04,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-14 18:05:04,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:04,180 INFO L225 Difference]: With dead ends: 5089 [2021-12-14 18:05:04,180 INFO L226 Difference]: Without dead ends: 3289 [2021-12-14 18:05:04,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:05:04,187 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 803 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:04,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 1913 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 18:05:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-14 18:05:04,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3186. [2021-12-14 18:05:04,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 2415 states have (on average 1.3958592132505176) internal successors, (3371), 2452 states have internal predecessors, (3371), 589 states have call successors, (589), 195 states have call predecessors, (589), 181 states have return successors, (583), 562 states have call predecessors, (583), 579 states have call successors, (583) [2021-12-14 18:05:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 4543 transitions. [2021-12-14 18:05:04,278 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 4543 transitions. Word has length 34 [2021-12-14 18:05:04,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:04,279 INFO L470 AbstractCegarLoop]: Abstraction has 3186 states and 4543 transitions. [2021-12-14 18:05:04,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 18:05:04,280 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 4543 transitions. [2021-12-14 18:05:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 18:05:04,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:04,282 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 18:05:04,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 18:05:04,284 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:04,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1540623621, now seen corresponding path program 1 times [2021-12-14 18:05:04,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:04,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229818599] [2021-12-14 18:05:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:04,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 18:05:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:04,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:04,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 18:05:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:05:04,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:04,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229818599] [2021-12-14 18:05:04,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229818599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:04,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:04,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:05:04,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786620965] [2021-12-14 18:05:04,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:04,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:05:04,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:04,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:05:04,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:05:04,758 INFO L87 Difference]: Start difference. First operand 3186 states and 4543 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-14 18:05:06,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:08,241 INFO L93 Difference]: Finished difference Result 8718 states and 12635 transitions. [2021-12-14 18:05:08,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 18:05:08,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2021-12-14 18:05:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:08,267 INFO L225 Difference]: With dead ends: 8718 [2021-12-14 18:05:08,268 INFO L226 Difference]: Without dead ends: 5535 [2021-12-14 18:05:08,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:05:08,282 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 1103 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:08,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 2693 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-14 18:05:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2021-12-14 18:05:08,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 4738. [2021-12-14 18:05:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 3613 states have (on average 1.3874896208137282) internal successors, (5013), 3662 states have internal predecessors, (5013), 857 states have call successors, (857), 285 states have call predecessors, (857), 267 states have return successors, (853), 826 states have call predecessors, (853), 847 states have call successors, (853) [2021-12-14 18:05:08,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6723 transitions. [2021-12-14 18:05:08,469 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6723 transitions. Word has length 66 [2021-12-14 18:05:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:08,469 INFO L470 AbstractCegarLoop]: Abstraction has 4738 states and 6723 transitions. [2021-12-14 18:05:08,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-14 18:05:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6723 transitions. [2021-12-14 18:05:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-14 18:05:08,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:08,473 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 18:05:08,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 18:05:08,473 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:08,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:08,474 INFO L85 PathProgramCache]: Analyzing trace with hash 127935254, now seen corresponding path program 1 times [2021-12-14 18:05:08,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:08,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749174629] [2021-12-14 18:05:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:08,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:05:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 18:05:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 18:05:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 18:05:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 18:05:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 18:05:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 18:05:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 18:05:09,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:09,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749174629] [2021-12-14 18:05:09,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749174629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:09,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:09,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:05:09,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066323102] [2021-12-14 18:05:09,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:09,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:05:09,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:09,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:05:09,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:05:09,118 INFO L87 Difference]: Start difference. First operand 4738 states and 6723 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 18:05:12,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:13,519 INFO L93 Difference]: Finished difference Result 11124 states and 15869 transitions. [2021-12-14 18:05:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 18:05:13,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2021-12-14 18:05:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:13,548 INFO L225 Difference]: With dead ends: 11124 [2021-12-14 18:05:13,549 INFO L226 Difference]: Without dead ends: 6389 [2021-12-14 18:05:13,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-14 18:05:13,565 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 756 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 370 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:13,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 2253 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 989 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-12-14 18:05:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2021-12-14 18:05:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6142. [2021-12-14 18:05:13,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 4803 states have (on average 1.402665001041016) internal successors, (6737), 4868 states have internal predecessors, (6737), 995 states have call successors, (995), 361 states have call predecessors, (995), 343 states have return successors, (991), 948 states have call predecessors, (991), 979 states have call successors, (991) [2021-12-14 18:05:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8723 transitions. [2021-12-14 18:05:13,802 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8723 transitions. Word has length 85 [2021-12-14 18:05:13,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:13,802 INFO L470 AbstractCegarLoop]: Abstraction has 6142 states and 8723 transitions. [2021-12-14 18:05:13,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 18:05:13,803 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8723 transitions. [2021-12-14 18:05:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-14 18:05:13,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:13,805 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-14 18:05:13,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 18:05:13,806 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash 986755271, now seen corresponding path program 1 times [2021-12-14 18:05:13,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:13,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243326484] [2021-12-14 18:05:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:13,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 18:05:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:14,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:14,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 18:05:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:14,371 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 18:05:14,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:14,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243326484] [2021-12-14 18:05:14,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243326484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:14,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:14,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:05:14,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888811818] [2021-12-14 18:05:14,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:14,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:05:14,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:14,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:05:14,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:05:14,373 INFO L87 Difference]: Start difference. First operand 6142 states and 8723 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 18:05:17,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:20,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:22,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:22,271 INFO L93 Difference]: Finished difference Result 15372 states and 22173 transitions. [2021-12-14 18:05:22,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 18:05:22,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2021-12-14 18:05:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:22,312 INFO L225 Difference]: With dead ends: 15372 [2021-12-14 18:05:22,312 INFO L226 Difference]: Without dead ends: 9233 [2021-12-14 18:05:22,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:05:22,332 INFO L933 BasicCegarLoop]: 1371 mSDtfsCounter, 820 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 298 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:22,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 4334 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1296 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-12-14 18:05:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9233 states. [2021-12-14 18:05:22,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9233 to 8128. [2021-12-14 18:05:22,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 6388 states have (on average 1.3963681903569192) internal successors, (8920), 6464 states have internal predecessors, (8920), 1289 states have call successors, (1289), 469 states have call predecessors, (1289), 450 states have return successors, (1292), 1242 states have call predecessors, (1292), 1276 states have call successors, (1292) [2021-12-14 18:05:22,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 11501 transitions. [2021-12-14 18:05:22,585 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 11501 transitions. Word has length 86 [2021-12-14 18:05:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:22,586 INFO L470 AbstractCegarLoop]: Abstraction has 8128 states and 11501 transitions. [2021-12-14 18:05:22,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-14 18:05:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 11501 transitions. [2021-12-14 18:05:22,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-14 18:05:22,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:22,593 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-12-14 18:05:22,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 18:05:22,594 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:22,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:22,594 INFO L85 PathProgramCache]: Analyzing trace with hash -216719008, now seen corresponding path program 1 times [2021-12-14 18:05:22,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:22,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833338883] [2021-12-14 18:05:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:22,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:22,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 18:05:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:23,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 18:05:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:23,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:23,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-14 18:05:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-14 18:05:23,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:23,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833338883] [2021-12-14 18:05:23,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833338883] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:23,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:23,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:05:23,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555293590] [2021-12-14 18:05:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:23,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:05:23,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:05:23,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:05:23,045 INFO L87 Difference]: Start difference. First operand 8128 states and 11501 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 18:05:26,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:28,668 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:31,020 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:33,744 INFO L93 Difference]: Finished difference Result 19602 states and 28161 transitions. [2021-12-14 18:05:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 18:05:33,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2021-12-14 18:05:33,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:33,787 INFO L225 Difference]: With dead ends: 19602 [2021-12-14 18:05:33,787 INFO L226 Difference]: Without dead ends: 11477 [2021-12-14 18:05:33,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-14 18:05:33,812 INFO L933 BasicCegarLoop]: 1266 mSDtfsCounter, 1075 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 645 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:33,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 4029 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 2198 Invalid, 3 Unknown, 0 Unchecked, 10.2s Time] [2021-12-14 18:05:33,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11477 states. [2021-12-14 18:05:34,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11477 to 10110. [2021-12-14 18:05:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10110 states, 7968 states have (on average 1.3928212851405624) internal successors, (11098), 8058 states have internal predecessors, (11098), 1587 states have call successors, (1587), 575 states have call predecessors, (1587), 554 states have return successors, (1594), 1536 states have call predecessors, (1594), 1574 states have call successors, (1594) [2021-12-14 18:05:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10110 states to 10110 states and 14279 transitions. [2021-12-14 18:05:34,139 INFO L78 Accepts]: Start accepts. Automaton has 10110 states and 14279 transitions. Word has length 117 [2021-12-14 18:05:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:34,141 INFO L470 AbstractCegarLoop]: Abstraction has 10110 states and 14279 transitions. [2021-12-14 18:05:34,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 18:05:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 10110 states and 14279 transitions. [2021-12-14 18:05:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-14 18:05:34,145 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:34,145 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2021-12-14 18:05:34,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 18:05:34,145 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:34,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:34,147 INFO L85 PathProgramCache]: Analyzing trace with hash 504148532, now seen corresponding path program 1 times [2021-12-14 18:05:34,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:34,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655699959] [2021-12-14 18:05:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:34,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 18:05:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-14 18:05:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 18:05:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-14 18:05:34,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:34,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655699959] [2021-12-14 18:05:34,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655699959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:34,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:34,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:05:34,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535446569] [2021-12-14 18:05:34,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:34,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:05:34,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:05:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:05:34,516 INFO L87 Difference]: Start difference. First operand 10110 states and 14279 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 18:05:37,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:40,263 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:42,689 INFO L93 Difference]: Finished difference Result 23836 states and 34157 transitions. [2021-12-14 18:05:42,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 18:05:42,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 119 [2021-12-14 18:05:42,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:42,746 INFO L225 Difference]: With dead ends: 23836 [2021-12-14 18:05:42,747 INFO L226 Difference]: Without dead ends: 13729 [2021-12-14 18:05:42,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-14 18:05:42,780 INFO L933 BasicCegarLoop]: 1293 mSDtfsCounter, 1168 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 785 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 3529 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:42,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 3529 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 1880 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2021-12-14 18:05:42,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13729 states. [2021-12-14 18:05:43,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13729 to 12092. [2021-12-14 18:05:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12092 states, 9548 states have (on average 1.3904482614160034) internal successors, (13276), 9652 states have internal predecessors, (13276), 1885 states have call successors, (1885), 681 states have call predecessors, (1885), 658 states have return successors, (1896), 1830 states have call predecessors, (1896), 1872 states have call successors, (1896) [2021-12-14 18:05:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 17057 transitions. [2021-12-14 18:05:43,145 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 17057 transitions. Word has length 119 [2021-12-14 18:05:43,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:43,146 INFO L470 AbstractCegarLoop]: Abstraction has 12092 states and 17057 transitions. [2021-12-14 18:05:43,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-14 18:05:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 17057 transitions. [2021-12-14 18:05:43,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-14 18:05:43,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:43,151 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2021-12-14 18:05:43,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 18:05:43,151 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:43,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:43,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1210000877, now seen corresponding path program 1 times [2021-12-14 18:05:43,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:43,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27685114] [2021-12-14 18:05:43,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:43,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 18:05:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 18:05:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 18:05:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-14 18:05:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:43,674 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-14 18:05:43,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:43,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27685114] [2021-12-14 18:05:43,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27685114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:43,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:43,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:05:43,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387341573] [2021-12-14 18:05:43,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:43,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:05:43,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:43,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:05:43,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:05:43,676 INFO L87 Difference]: Start difference. First operand 12092 states and 17057 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)