./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:35:32,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:35:32,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:35:32,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:35:32,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:35:32,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:35:32,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:35:32,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:35:32,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:35:32,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:35:32,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:35:32,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:35:32,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:35:32,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:35:32,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:35:32,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:35:32,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:35:32,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:35:32,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:35:32,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:35:32,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:35:32,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:35:32,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:35:32,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:35:32,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:35:32,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:35:32,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:35:32,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:35:32,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:35:32,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:35:32,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:35:32,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:35:32,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:35:32,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:35:32,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:35:32,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:35:32,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:35:32,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:35:32,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:35:32,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:35:32,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:35:32,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:35:32,841 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:35:32,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:35:32,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:35:32,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:35:32,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:35:32,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:35:32,850 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:35:32,850 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:35:32,850 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:35:32,850 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:35:32,851 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:35:32,852 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:35:32,852 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:35:32,852 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:35:32,852 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:35:32,852 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:35:32,853 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:35:32,853 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:35:32,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:35:32,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:35:32,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:35:32,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:35:32,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:35:32,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:35:32,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:35:32,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:35:32,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:35:32,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:35:32,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:35:32,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:35:32,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:35:32,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:35:32,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:35:32,858 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:35:32,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:35:32,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:35:32,859 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:35:32,859 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:35:32,859 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d62cca735e5e5c3ed49d61d09e2b8d7696fac03708570c9e23afbb5bfdcaa275 [2021-11-23 02:35:33,137 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:35:33,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:35:33,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:35:33,167 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:35:33,167 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:35:33,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-23 02:35:33,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/data/0ca179bd2/053ab6cf5eaf40799f45990e315e828f/FLAG3707046ac [2021-11-23 02:35:34,342 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:35:34,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-23 02:35:34,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/data/0ca179bd2/053ab6cf5eaf40799f45990e315e828f/FLAG3707046ac [2021-11-23 02:35:34,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/data/0ca179bd2/053ab6cf5eaf40799f45990e315e828f [2021-11-23 02:35:34,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:35:34,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:35:34,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:35:34,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:35:34,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:35:34,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:35:34" (1/1) ... [2021-11-23 02:35:34,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5bae70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:34, skipping insertion in model container [2021-11-23 02:35:34,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:35:34" (1/1) ... [2021-11-23 02:35:34,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:35:34,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:35:37,817 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2021-11-23 02:35:37,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:35:38,100 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:35:38,595 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[361017,361030] [2021-11-23 02:35:38,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:35:38,901 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:35:38,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38 WrapperNode [2021-11-23 02:35:38,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:35:38,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:35:38,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:35:38,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:35:38,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:39,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:39,547 INFO L137 Inliner]: procedures = 359, calls = 7215, calls flagged for inlining = 183, calls inlined = 137, statements flattened = 11745 [2021-11-23 02:35:39,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:35:39,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:35:39,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:35:39,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:35:39,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:39,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:39,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:39,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:40,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:40,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:40,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:40,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:35:40,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:35:40,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:35:40,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:35:40,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (1/1) ... [2021-11-23 02:35:40,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:35:40,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:35:40,485 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:35:40,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:35:40,623 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-11-23 02:35:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-11-23 02:35:40,623 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-11-23 02:35:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-11-23 02:35:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-23 02:35:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-23 02:35:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:35:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:35:40,624 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 02:35:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 02:35:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_recv_bulk_msg [2021-11-23 02:35:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_recv_bulk_msg [2021-11-23 02:35:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:35:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:35:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_save_screen [2021-11-23 02:35:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_save_screen [2021-11-23 02:35:40,625 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_buffers [2021-11-23 02:35:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_buffers [2021-11-23 02:35:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_disconnect [2021-11-23 02:35:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_disconnect [2021-11-23 02:35:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_deinit [2021-11-23 02:35:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_deinit [2021-11-23 02:35:40,626 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_byte [2021-11-23 02:35:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_byte [2021-11-23 02:35:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:35:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:35:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-11-23 02:35:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-11-23 02:35:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:35:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:35:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_cursor [2021-11-23 02:35:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_cursor [2021-11-23 02:35:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2021-11-23 02:35:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2021-11-23 02:35:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-11-23 02:35:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-11-23 02:35:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_word [2021-11-23 02:35:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_word [2021-11-23 02:35:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:35:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:35:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetReg [2021-11-23 02:35:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetReg [2021-11-23 02:35:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 02:35:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 02:35:40,629 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb_lock_and_check [2021-11-23 02:35:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb_lock_and_check [2021-11-23 02:35:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:35:40,630 INFO L130 BoogieDeclarations]: Found specification of procedure take_over_console [2021-11-23 02:35:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure take_over_console [2021-11-23 02:35:40,631 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_sisusb_valid [2021-11-23 02:35:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_sisusb_valid [2021-11-23 02:35:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:35:40,632 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegOR [2021-11-23 02:35:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegOR [2021-11-23 02:35:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2021-11-23 02:35:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_sisusb_usb_data [2021-11-23 02:35:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 02:35:40,633 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_check_rbc [2021-11-23 02:35:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_check_rbc [2021-11-23 02:35:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:35:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:35:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-23 02:35:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-23 02:35:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_outurb_available [2021-11-23 02:35:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_outurb_available [2021-11-23 02:35:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_kill_all_busy [2021-11-23 02:35:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_kill_all_busy [2021-11-23 02:35:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:35:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:35:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-11-23 02:35:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-11-23 02:35:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getidxreg [2021-11-23 02:35:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getidxreg [2021-11-23 02:35:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-11-23 02:35:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-11-23 02:35:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-11-23 02:35:40,654 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-11-23 02:35:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_writeb [2021-11-23 02:35:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_writeb [2021-11-23 02:35:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:35:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-23 02:35:40,655 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-23 02:35:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_set_default_mode [2021-11-23 02:35:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_set_default_mode [2021-11-23 02:35:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_byte [2021-11-23 02:35:40,656 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_byte [2021-11-23 02:35:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:35:40,656 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_DisplayOn [2021-11-23 02:35:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_DisplayOn [2021-11-23 02:35:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregandor [2021-11-23 02:35:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregandor [2021-11-23 02:35:40,657 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_mem_bulk [2021-11-23 02:35:40,657 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_mem_bulk [2021-11-23 02:35:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2021-11-23 02:35:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2021-11-23 02:35:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbdummycon_init [2021-11-23 02:35:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbdummycon_init [2021-11-23 02:35:40,658 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2021-11-23 02:35:40,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2021-11-23 02:35:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:35:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetReg [2021-11-23 02:35:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetReg [2021-11-23 02:35:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_do_font_op [2021-11-23 02:35:40,659 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_do_font_op [2021-11-23 02:35:40,659 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_init_gfxdevice [2021-11-23 02:35:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_init_gfxdevice [2021-11-23 02:35:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegByte [2021-11-23 02:35:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegByte [2021-11-23 02:35:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_free_urbs [2021-11-23 02:35:40,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_free_urbs [2021-11-23 02:35:40,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:35:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:35:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bridge_packet [2021-11-23 02:35:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bridge_packet [2021-11-23 02:35:40,661 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-23 02:35:40,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-23 02:35:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-23 02:35:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-23 02:35:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_ioctl [2021-11-23 02:35:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_ioctl [2021-11-23 02:35:40,662 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_word [2021-11-23 02:35:40,662 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_word [2021-11-23 02:35:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_get_sisusb [2021-11-23 02:35:40,663 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_get_sisusb [2021-11-23 02:35:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:35:40,663 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:35:40,663 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_cursor [2021-11-23 02:35:40,664 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_cursor [2021-11-23 02:35:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_is_inactive [2021-11-23 02:35:40,664 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_is_inactive [2021-11-23 02:35:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-11-23 02:35:40,664 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-11-23 02:35:40,664 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_clear_vram [2021-11-23 02:35:40,665 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_clear_vram [2021-11-23 02:35:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_pci_config [2021-11-23 02:35:40,665 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_pci_config [2021-11-23 02:35:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:35:40,665 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-11-23 02:35:40,665 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-11-23 02:35:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_bulk_msg [2021-11-23 02:35:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_bulk_msg [2021-11-23 02:35:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-23 02:35:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-23 02:35:40,666 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:35:40,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:35:40,679 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_readb [2021-11-23 02:35:40,679 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_readb [2021-11-23 02:35:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregor [2021-11-23 02:35:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregor [2021-11-23 02:35:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:35:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-11-23 02:35:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-11-23 02:35:40,680 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-11-23 02:35:40,680 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-11-23 02:35:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:35:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_send_packet [2021-11-23 02:35:40,681 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_send_packet [2021-11-23 02:35:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_memio_long [2021-11-23 02:35:40,681 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_memio_long [2021-11-23 02:35:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_reset_text_mode [2021-11-23 02:35:40,681 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_reset_text_mode [2021-11-23 02:35:40,681 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSB_InitPtr [2021-11-23 02:35:40,682 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSB_InitPtr [2021-11-23 02:35:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:35:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_pci_config [2021-11-23 02:35:40,682 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_pci_config [2021-11-23 02:35:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:35:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxreg [2021-11-23 02:35:40,682 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxreg [2021-11-23 02:35:40,682 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegANDOR [2021-11-23 02:35:40,683 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegANDOR [2021-11-23 02:35:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:35:40,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:35:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_wait_all_out_complete [2021-11-23 02:35:40,683 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_wait_all_out_complete [2021-11-23 02:35:40,683 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 02:35:40,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 02:35:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetRegAND [2021-11-23 02:35:40,684 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetRegAND [2021-11-23 02:35:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setidxregand [2021-11-23 02:35:40,684 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setidxregand [2021-11-23 02:35:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-11-23 02:35:40,684 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-11-23 02:35:40,684 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_SetSegmentReg [2021-11-23 02:35:40,684 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_SetSegmentReg [2021-11-23 02:35:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_copy_memory [2021-11-23 02:35:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_copy_memory [2021-11-23 02:35:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_setreg [2021-11-23 02:35:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_setreg [2021-11-23 02:35:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2021-11-23 02:35:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_sisusb_usb_data [2021-11-23 02:35:40,685 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_set_start_address [2021-11-23 02:35:40,685 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_set_start_address [2021-11-23 02:35:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-11-23 02:35:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-11-23 02:35:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 02:35:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 02:35:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_WriteDAC [2021-11-23 02:35:40,686 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_WriteDAC [2021-11-23 02:35:40,686 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_read_mem_bulk [2021-11-23 02:35:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_read_mem_bulk [2021-11-23 02:35:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_getreg [2021-11-23 02:35:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_getreg [2021-11-23 02:35:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure SiSUSBSetMode [2021-11-23 02:35:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure SiSUSBSetMode [2021-11-23 02:35:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2021-11-23 02:35:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2021-11-23 02:35:40,687 INFO L130 BoogieDeclarations]: Found specification of procedure sisusbcon_init [2021-11-23 02:35:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusbcon_init [2021-11-23 02:35:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-11-23 02:35:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-11-23 02:35:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:35:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_write_memio_long [2021-11-23 02:35:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_write_memio_long [2021-11-23 02:35:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure SiS_GetRegByte [2021-11-23 02:35:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure SiS_GetRegByte [2021-11-23 02:35:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-23 02:35:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-23 02:35:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_triggersr16 [2021-11-23 02:35:40,689 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_triggersr16 [2021-11-23 02:35:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-23 02:35:40,698 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-23 02:35:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:35:40,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:35:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure sisusb_all_free [2021-11-23 02:35:40,699 INFO L138 BoogieDeclarations]: Found implementation of procedure sisusb_all_free [2021-11-23 02:35:41,629 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:35:41,633 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:36:18,312 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:36:20,640 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:36:20,641 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:36:20,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:20 BoogieIcfgContainer [2021-11-23 02:36:20,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:36:20,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:36:20,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:36:20,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:36:20,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:35:34" (1/3) ... [2021-11-23 02:36:20,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9f4820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:20, skipping insertion in model container [2021-11-23 02:36:20,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:35:38" (2/3) ... [2021-11-23 02:36:20,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9f4820 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:20, skipping insertion in model container [2021-11-23 02:36:20,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:20" (3/3) ... [2021-11-23 02:36:20,677 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--usb--misc--sisusbvga--sisusbvga.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-11-23 02:36:20,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:36:20,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:36:20,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:36:20,792 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=FINITE_AUTOMATA, 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 [2021-11-23 02:36:20,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:36:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 2233 states, 1362 states have (on average 1.3193832599118942) internal successors, (1797), 1389 states have internal predecessors, (1797), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) [2021-11-23 02:36:20,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:36:20,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:20,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:20,905 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:20,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:20,916 INFO L85 PathProgramCache]: Analyzing trace with hash 258264672, now seen corresponding path program 1 times [2021-11-23 02:36:20,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:20,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929967790] [2021-11-23 02:36:20,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:20,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:36:21,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:21,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929967790] [2021-11-23 02:36:21,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929967790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:21,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:36:21,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:36:21,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813974081] [2021-11-23 02:36:21,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:21,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:21,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:21,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:21,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:21,993 INFO L87 Difference]: Start difference. First operand has 2233 states, 1362 states have (on average 1.3193832599118942) internal successors, (1797), 1389 states have internal predecessors, (1797), 765 states have call successors, (765), 104 states have call predecessors, (765), 104 states have return successors, (765), 761 states have call predecessors, (765), 765 states have call successors, (765) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:36:27,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:31,105 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:31,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:31,605 INFO L93 Difference]: Finished difference Result 4459 states and 6713 transitions. [2021-11-23 02:36:31,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:31,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-23 02:36:31,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:31,653 INFO L225 Difference]: With dead ends: 4459 [2021-11-23 02:36:31,654 INFO L226 Difference]: Without dead ends: 2229 [2021-11-23 02:36:31,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:36:31,683 INFO L933 BasicCegarLoop]: 3034 mSDtfsCounter, 0 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:31,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6067 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 570 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2021-11-23 02:36:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2021-11-23 02:36:31,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2229. [2021-11-23 02:36:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2229 states, 1361 states have (on average 1.3181484202792064) internal successors, (1794), 1386 states have internal predecessors, (1794), 765 states have call successors, (765), 104 states have call predecessors, (765), 102 states have return successors, (759), 755 states have call predecessors, (759), 759 states have call successors, (759) [2021-11-23 02:36:31,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 3318 transitions. [2021-11-23 02:36:31,937 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 3318 transitions. Word has length 14 [2021-11-23 02:36:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:31,939 INFO L470 AbstractCegarLoop]: Abstraction has 2229 states and 3318 transitions. [2021-11-23 02:36:31,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:36:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 3318 transitions. [2021-11-23 02:36:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:36:31,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:31,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:31,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:36:31,942 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:31,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:31,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1990268969, now seen corresponding path program 1 times [2021-11-23 02:36:31,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:31,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851051229] [2021-11-23 02:36:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:31,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:36:32,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:32,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851051229] [2021-11-23 02:36:32,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851051229] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:36:32,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400639317] [2021-11-23 02:36:32,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:32,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:32,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:36:32,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:36:32,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:36:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:34,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 8388 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:36:34,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:36:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:36:34,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:36:34,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400639317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:34,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:36:34,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 02:36:34,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156666056] [2021-11-23 02:36:34,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:34,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:34,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:34,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:36:34,782 INFO L87 Difference]: Start difference. First operand 2229 states and 3318 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:36:39,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:40,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:40,422 INFO L93 Difference]: Finished difference Result 2593 states and 3814 transitions. [2021-11-23 02:36:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:40,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2021-11-23 02:36:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:40,450 INFO L225 Difference]: With dead ends: 2593 [2021-11-23 02:36:40,450 INFO L226 Difference]: Without dead ends: 2590 [2021-11-23 02:36:40,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:36:40,456 INFO L933 BasicCegarLoop]: 3130 mSDtfsCounter, 3281 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3284 SdHoareTripleChecker+Valid, 3574 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:40,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3284 Valid, 3574 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 357 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-23 02:36:40,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-11-23 02:36:40,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2587. [2021-11-23 02:36:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2587 states, 1581 states have (on average 1.3149905123339658) internal successors, (2079), 1610 states have internal predecessors, (2079), 866 states have call successors, (866), 141 states have call predecessors, (866), 139 states have return successors, (861), 856 states have call predecessors, (861), 861 states have call successors, (861) [2021-11-23 02:36:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3806 transitions. [2021-11-23 02:36:40,675 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3806 transitions. Word has length 15 [2021-11-23 02:36:40,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:40,676 INFO L470 AbstractCegarLoop]: Abstraction has 2587 states and 3806 transitions. [2021-11-23 02:36:40,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:36:40,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3806 transitions. [2021-11-23 02:36:40,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:36:40,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:40,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:40,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:36:40,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:40,896 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:40,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1566427158, now seen corresponding path program 1 times [2021-11-23 02:36:40,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:40,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265463598] [2021-11-23 02:36:40,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:40,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:36:41,493 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:41,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265463598] [2021-11-23 02:36:41,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265463598] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:36:41,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827074765] [2021-11-23 02:36:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:41,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:41,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:36:41,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:36:41,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:36:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:43,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 8390 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:36:43,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:36:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:36:43,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:36:43,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827074765] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:43,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:36:43,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 02:36:43,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448536539] [2021-11-23 02:36:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:43,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:43,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:43,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:43,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:36:43,613 INFO L87 Difference]: Start difference. First operand 2587 states and 3806 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:36:47,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:50,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:54,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:36:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:36:54,892 INFO L93 Difference]: Finished difference Result 6610 states and 9760 transitions. [2021-11-23 02:36:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:36:54,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-23 02:36:54,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:36:54,944 INFO L225 Difference]: With dead ends: 6610 [2021-11-23 02:36:54,945 INFO L226 Difference]: Without dead ends: 4032 [2021-11-23 02:36:54,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:36:54,978 INFO L933 BasicCegarLoop]: 4678 mSDtfsCounter, 2324 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 7498 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:36:54,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2325 Valid, 7498 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 669 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2021-11-23 02:36:54,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4032 states. [2021-11-23 02:36:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4032 to 4028. [2021-11-23 02:36:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4028 states, 2463 states have (on average 1.3085667884693464) internal successors, (3223), 2520 states have internal predecessors, (3223), 1347 states have call successors, (1347), 216 states have call predecessors, (1347), 217 states have return successors, (1355), 1321 states have call predecessors, (1355), 1329 states have call successors, (1355) [2021-11-23 02:36:55,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4028 states to 4028 states and 5925 transitions. [2021-11-23 02:36:55,487 INFO L78 Accepts]: Start accepts. Automaton has 4028 states and 5925 transitions. Word has length 16 [2021-11-23 02:36:55,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:36:55,487 INFO L470 AbstractCegarLoop]: Abstraction has 4028 states and 5925 transitions. [2021-11-23 02:36:55,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:36:55,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4028 states and 5925 transitions. [2021-11-23 02:36:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:36:55,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:36:55,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:36:55,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:36:55,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:55,704 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:36:55,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:36:55,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1312237772, now seen corresponding path program 1 times [2021-11-23 02:36:55,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:36:55,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875809680] [2021-11-23 02:36:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:55,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:36:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:36:56,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:36:56,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875809680] [2021-11-23 02:36:56,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875809680] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:36:56,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084470360] [2021-11-23 02:36:56,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:36:56,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:36:56,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:36:56,267 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:36:56,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:36:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:36:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 8392 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:36:57,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:36:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:36:58,058 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:36:58,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084470360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:36:58,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:36:58,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 02:36:58,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116302239] [2021-11-23 02:36:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:36:58,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:36:58,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:36:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:36:58,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:36:58,061 INFO L87 Difference]: Start difference. First operand 4028 states and 5925 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:37:02,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:05,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-23 02:37:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:05,593 INFO L93 Difference]: Finished difference Result 4474 states and 6525 transitions. [2021-11-23 02:37:05,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:37:05,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-23 02:37:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:05,672 INFO L225 Difference]: With dead ends: 4474 [2021-11-23 02:37:05,672 INFO L226 Difference]: Without dead ends: 4465 [2021-11-23 02:37:05,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:37:05,678 INFO L933 BasicCegarLoop]: 3129 mSDtfsCounter, 3262 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 3593 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:05,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3266 Valid, 3593 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 357 Invalid, 2 Unknown, 0 Unchecked, 7.3s Time] [2021-11-23 02:37:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4465 states. [2021-11-23 02:37:05,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4465 to 4455. [2021-11-23 02:37:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4455 states, 2737 states have (on average 1.3120204603580563) internal successors, (3591), 2801 states have internal predecessors, (3591), 1448 states have call successors, (1448), 267 states have call predecessors, (1448), 269 states have return successors, (1458), 1424 states have call predecessors, (1458), 1432 states have call successors, (1458) [2021-11-23 02:37:06,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 6497 transitions. [2021-11-23 02:37:06,033 INFO L78 Accepts]: Start accepts. Automaton has 4455 states and 6497 transitions. Word has length 17 [2021-11-23 02:37:06,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:06,034 INFO L470 AbstractCegarLoop]: Abstraction has 4455 states and 6497 transitions. [2021-11-23 02:37:06,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 02:37:06,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4455 states and 6497 transitions. [2021-11-23 02:37:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 02:37:06,046 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:06,046 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:37:06,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:37:06,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:06,260 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:06,260 INFO L85 PathProgramCache]: Analyzing trace with hash -147111788, now seen corresponding path program 1 times [2021-11-23 02:37:06,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:06,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680182385] [2021-11-23 02:37:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:06,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:37:06,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:06,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680182385] [2021-11-23 02:37:06,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680182385] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:37:06,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628770629] [2021-11-23 02:37:06,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:06,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:06,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:37:06,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:37:06,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:37:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:08,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 8533 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 02:37:08,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:08,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:37:08,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:37:08,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628770629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:37:08,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:37:08,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 02:37:08,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777527580] [2021-11-23 02:37:08,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:37:08,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:37:08,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:37:08,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:37:08,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:37:08,769 INFO L87 Difference]: Start difference. First operand 4455 states and 6497 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 02:37:14,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:37:14,226 INFO L93 Difference]: Finished difference Result 9113 states and 13342 transitions. [2021-11-23 02:37:14,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:37:14,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2021-11-23 02:37:14,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:37:14,281 INFO L225 Difference]: With dead ends: 9113 [2021-11-23 02:37:14,282 INFO L226 Difference]: Without dead ends: 4667 [2021-11-23 02:37:14,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:37:14,315 INFO L933 BasicCegarLoop]: 3059 mSDtfsCounter, 137 mSDsluCounter, 3242 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 6023 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:37:14,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 6023 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-11-23 02:37:14,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4667 states. [2021-11-23 02:37:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4667 to 4643. [2021-11-23 02:37:14,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 2863 states have (on average 1.318896262661544) internal successors, (3776), 2934 states have internal predecessors, (3776), 1510 states have call successors, (1510), 267 states have call predecessors, (1510), 269 states have return successors, (1526), 1485 states have call predecessors, (1526), 1494 states have call successors, (1526) [2021-11-23 02:37:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 6812 transitions. [2021-11-23 02:37:14,653 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 6812 transitions. Word has length 36 [2021-11-23 02:37:14,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:37:14,654 INFO L470 AbstractCegarLoop]: Abstraction has 4643 states and 6812 transitions. [2021-11-23 02:37:14,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 02:37:14,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 6812 transitions. [2021-11-23 02:37:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 02:37:14,660 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:37:14,660 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:37:14,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:37:14,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:14,875 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:37:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:37:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1039239630, now seen corresponding path program 1 times [2021-11-23 02:37:14,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:37:14,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627842428] [2021-11-23 02:37:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:14,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:37:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:15,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:37:15,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:37:15,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627842428] [2021-11-23 02:37:15,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627842428] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:37:15,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351140820] [2021-11-23 02:37:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:37:15,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:37:15,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:37:15,352 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:37:15,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b8736f3-709d-4cf8-90bf-e9b0356c7afc/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:37:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:37:16,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 8534 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:37:16,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:37:17,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:37:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:37:17,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351140820] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:37:17,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [774213815] [2021-11-23 02:37:17,362 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2021-11-23 02:37:17,362 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:37:17,368 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:37:17,374 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:37:17,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:38:23,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 551 treesize of output 443 [2021-11-23 02:38:29,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 551 treesize of output 443 [2021-11-23 02:42:39,650 WARN L227 SmtUtils]: Spent 13.49s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:42:53,365 WARN L227 SmtUtils]: Spent 13.67s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:43:08,028 WARN L227 SmtUtils]: Spent 14.51s on a formula simplification. DAG size of input: 13885 DAG size of output: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:43:21,571 WARN L227 SmtUtils]: Spent 13.38s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:43:34,628 WARN L227 SmtUtils]: Spent 13.02s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:43:48,588 WARN L227 SmtUtils]: Spent 13.93s on a formula simplification. DAG size of input: 13885 DAG size of output: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:44:01,730 WARN L227 SmtUtils]: Spent 13.01s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:44:14,693 WARN L227 SmtUtils]: Spent 12.94s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:44:28,695 WARN L227 SmtUtils]: Spent 13.97s on a formula simplification. DAG size of input: 13885 DAG size of output: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:44:42,201 WARN L227 SmtUtils]: Spent 13.41s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:44:55,675 WARN L227 SmtUtils]: Spent 13.45s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:45:09,944 WARN L227 SmtUtils]: Spent 14.24s on a formula simplification. DAG size of input: 13885 DAG size of output: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:48:46,697 WARN L227 SmtUtils]: Spent 13.38s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:49:00,285 WARN L227 SmtUtils]: Spent 13.56s on a formula simplification that was a NOOP. DAG size: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-23 02:49:15,010 WARN L227 SmtUtils]: Spent 14.61s on a formula simplification. DAG size of input: 13885 DAG size of output: 13766 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)