./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI --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 f665efa4a665554cf7543e013a29ff4c6ab086907b4fe7628b89c7f514f54a81 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:48:39,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:48:39,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:48:39,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:48:39,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:48:39,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:48:39,664 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:48:39,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:48:39,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:48:39,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:48:39,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:48:39,681 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:48:39,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:48:39,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:48:39,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:48:39,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:48:39,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:48:39,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:48:39,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:48:39,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:48:39,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:48:39,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:48:39,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:48:39,711 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:48:39,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:48:39,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:48:39,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:48:39,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:48:39,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:48:39,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:48:39,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:48:39,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:48:39,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:48:39,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:48:39,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:48:39,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:48:39,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:48:39,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:48:39,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:48:39,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:48:39,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:48:39,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:48:39,776 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:48:39,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:48:39,777 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:48:39,777 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:48:39,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:48:39,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:48:39,778 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:48:39,779 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:48:39,779 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:48:39,779 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:48:39,780 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:48:39,780 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:48:39,781 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:48:39,781 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:48:39,781 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:48:39,781 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:48:39,782 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:48:39,782 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:48:39,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:48:39,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:48:39,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:48:39,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:48:39,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:48:39,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:48:39,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:48:39,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:48:39,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:48:39,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:48:39,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:48:39,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:39,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:48:39,787 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:48:39,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:48:39,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:48:39,788 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:48:39,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:48:39,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:48:39,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:48:39,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f665efa4a665554cf7543e013a29ff4c6ab086907b4fe7628b89c7f514f54a81 [2022-11-03 02:48:40,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:48:40,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:48:40,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:48:40,121 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:48:40,122 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:48:40,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i [2022-11-03 02:48:40,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/data/087091c3a/007c0637b66843469dab6f7644d979e7/FLAG29a9fda81 [2022-11-03 02:48:41,208 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:48:41,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i [2022-11-03 02:48:41,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/data/087091c3a/007c0637b66843469dab6f7644d979e7/FLAG29a9fda81 [2022-11-03 02:48:41,560 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/data/087091c3a/007c0637b66843469dab6f7644d979e7 [2022-11-03 02:48:41,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:48:41,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:48:41,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:48:41,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:48:41,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:48:41,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:48:41" (1/1) ... [2022-11-03 02:48:41,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a61d270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:41, skipping insertion in model container [2022-11-03 02:48:41,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:48:41" (1/1) ... [2022-11-03 02:48:41,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:48:41,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:48:43,825 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_f74a7063-7130-4a04-87d9-a60548c31906/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i[298813,298826] [2022-11-03 02:48:43,885 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:48:43,933 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:48:44,359 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_f74a7063-7130-4a04-87d9-a60548c31906/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i[298813,298826] [2022-11-03 02:48:44,374 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:48:44,520 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:48:44,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44 WrapperNode [2022-11-03 02:48:44,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:48:44,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:48:44,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:48:44,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:48:44,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:44,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:44,864 INFO L138 Inliner]: procedures = 237, calls = 2052, calls flagged for inlining = 107, calls inlined = 104, statements flattened = 4578 [2022-11-03 02:48:44,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:48:44,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:48:44,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:48:44,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:48:44,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:44,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:44,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:44,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:45,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:45,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:45,115 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:45,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:45,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:48:45,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:48:45,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:48:45,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:48:45,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (1/1) ... [2022-11-03 02:48:45,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:48:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:45,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:48:45,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:48:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure ResetChip [2022-11-03 02:48:45,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ResetChip [2022-11-03 02:48:45,259 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_ioctl [2022-11-03 02:48:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_ioctl [2022-11-03 02:48:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:48:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:48:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:48:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:48:45,260 INFO L130 BoogieDeclarations]: Found specification of procedure RxCurCount [2022-11-03 02:48:45,260 INFO L138 BoogieDeclarations]: Found implementation of procedure RxCurCount [2022-11-03 02:48:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:48:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:48:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure irda_device_txqueue_empty [2022-11-03 02:48:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_device_txqueue_empty [2022-11-03 02:48:45,261 INFO L130 BoogieDeclarations]: Found specification of procedure irda_setup_dma [2022-11-03 02:48:45,261 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_setup_dma [2022-11-03 02:48:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-11-03 02:48:45,262 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-11-03 02:48:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-11-03 02:48:45,262 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-11-03 02:48:45,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-03 02:48:45,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-03 02:48:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:48:45,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:48:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-11-03 02:48:45,263 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-11-03 02:48:45,263 INFO L130 BoogieDeclarations]: Found specification of procedure Sdelay [2022-11-03 02:48:45,263 INFO L138 BoogieDeclarations]: Found implementation of procedure Sdelay [2022-11-03 02:48:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-03 02:48:45,264 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-03 02:48:45,264 INFO L130 BoogieDeclarations]: Found specification of procedure CheckRegBit [2022-11-03 02:48:45,264 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckRegBit [2022-11-03 02:48:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:48:45,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:48:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure SetSIR [2022-11-03 02:48:45,265 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSIR [2022-11-03 02:48:45,265 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_speed [2022-11-03 02:48:45,265 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_speed [2022-11-03 02:48:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:48:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:48:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-03 02:48:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-03 02:48:45,266 INFO L130 BoogieDeclarations]: Found specification of procedure SetMaxRxPacketSize [2022-11-03 02:48:45,266 INFO L138 BoogieDeclarations]: Found implementation of procedure SetMaxRxPacketSize [2022-11-03 02:48:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure dma_zalloc_coherent [2022-11-03 02:48:45,267 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_zalloc_coherent [2022-11-03 02:48:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure GetRecvByte [2022-11-03 02:48:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure GetRecvByte [2022-11-03 02:48:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-03 02:48:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-03 02:48:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:48:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:48:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure SetPulseWidth [2022-11-03 02:48:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure SetPulseWidth [2022-11-03 02:48:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure Tdelay [2022-11-03 02:48:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure Tdelay [2022-11-03 02:48:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-11-03 02:48:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-11-03 02:48:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-03 02:48:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-03 02:48:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure hwreset [2022-11-03 02:48:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure hwreset [2022-11-03 02:48:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:48:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:48:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:48:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:48:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure ClkTx [2022-11-03 02:48:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ClkTx [2022-11-03 02:48:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure WriteLPCReg [2022-11-03 02:48:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteLPCReg [2022-11-03 02:48:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:48:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:48:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-11-03 02:48:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-11-03 02:48:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure CommonInit [2022-11-03 02:48:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure CommonInit [2022-11-03 02:48:45,275 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-03 02:48:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-03 02:48:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-03 02:48:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-03 02:48:45,276 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-03 02:48:45,276 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-03 02:48:45,277 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_change_dongle_speed [2022-11-03 02:48:45,277 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_change_dongle_speed [2022-11-03 02:48:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure ReadLPCReg [2022-11-03 02:48:45,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadLPCReg [2022-11-03 02:48:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:48:45,278 INFO L130 BoogieDeclarations]: Found specification of procedure free_dma [2022-11-03 02:48:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure free_dma [2022-11-03 02:48:45,279 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_receive [2022-11-03 02:48:45,279 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_receive [2022-11-03 02:48:45,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:48:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_dma_xmit [2022-11-03 02:48:45,281 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_dma_xmit [2022-11-03 02:48:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-11-03 02:48:45,281 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-11-03 02:48:45,281 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_close [2022-11-03 02:48:45,282 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_close [2022-11-03 02:48:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-03 02:48:45,282 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-03 02:48:45,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:48:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-03 02:48:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-03 02:48:45,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:48:45,283 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:48:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure CkRxRecv [2022-11-03 02:48:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure CkRxRecv [2022-11-03 02:48:45,284 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_is_watching [2022-11-03 02:48:45,284 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_is_watching [2022-11-03 02:48:45,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-03 02:48:45,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-03 02:48:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure irda_get_next_speed [2022-11-03 02:48:45,289 INFO L138 BoogieDeclarations]: Found implementation of procedure irda_get_next_speed [2022-11-03 02:48:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2022-11-03 02:48:45,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2022-11-03 02:48:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:48:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-03 02:48:45,293 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-03 02:48:45,293 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-11-03 02:48:45,293 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-11-03 02:48:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendByte [2022-11-03 02:48:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendByte [2022-11-03 02:48:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-11-03 02:48:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-11-03 02:48:45,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-03 02:48:45,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-03 02:48:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure ReadReg [2022-11-03 02:48:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadReg [2022-11-03 02:48:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_open [2022-11-03 02:48:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_open [2022-11-03 02:48:45,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:48:45,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:48:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure WriteRegBit [2022-11-03 02:48:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteRegBit [2022-11-03 02:48:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:48:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Indx [2022-11-03 02:48:45,300 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Indx [2022-11-03 02:48:45,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:48:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:48:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:48:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-03 02:48:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-03 02:48:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:48:45,301 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_suspicious [2022-11-03 02:48:45,301 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_suspicious [2022-11-03 02:48:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:48:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-03 02:48:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-03 02:48:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure WriteReg [2022-11-03 02:48:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure WriteReg [2022-11-03 02:48:45,302 INFO L130 BoogieDeclarations]: Found specification of procedure SetSendPreambleCount [2022-11-03 02:48:45,302 INFO L138 BoogieDeclarations]: Found implementation of procedure SetSendPreambleCount [2022-11-03 02:48:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure InitCard [2022-11-03 02:48:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure InitCard [2022-11-03 02:48:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure SetTimer [2022-11-03 02:48:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure SetTimer [2022-11-03 02:48:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure ActClk [2022-11-03 02:48:45,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ActClk [2022-11-03 02:48:45,303 INFO L130 BoogieDeclarations]: Found specification of procedure SetBaudRate [2022-11-03 02:48:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure SetBaudRate [2022-11-03 02:48:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure Wr_Byte [2022-11-03 02:48:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure Wr_Byte [2022-11-03 02:48:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-03 02:48:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-03 02:48:45,304 INFO L130 BoogieDeclarations]: Found specification of procedure request_dma [2022-11-03 02:48:45,304 INFO L138 BoogieDeclarations]: Found implementation of procedure request_dma [2022-11-03 02:48:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-11-03 02:48:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-11-03 02:48:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_unlock [2022-11-03 02:48:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_unlock [2022-11-03 02:48:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:48:45,305 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-11-03 02:48:45,305 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-11-03 02:48:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure via_ircc_net_open [2022-11-03 02:48:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure via_ircc_net_open [2022-11-03 02:48:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_to_linear_data [2022-11-03 02:48:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_to_linear_data [2022-11-03 02:48:45,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:48:45,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:48:46,214 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:48:46,220 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:48:46,761 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:48:54,362 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:48:55,716 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:48:55,716 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:48:55,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:55 BoogieIcfgContainer [2022-11-03 02:48:55,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:48:55,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:48:55,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:48:55,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:48:55,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:48:41" (1/3) ... [2022-11-03 02:48:55,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d4f6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:48:55, skipping insertion in model container [2022-11-03 02:48:55,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:48:44" (2/3) ... [2022-11-03 02:48:55,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d4f6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:48:55, skipping insertion in model container [2022-11-03 02:48:55,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:48:55" (3/3) ... [2022-11-03 02:48:55,738 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--via-ircc.ko-entry_point.cil.out.i [2022-11-03 02:48:55,758 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:48:55,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:48:55,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:48:55,846 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b08e98c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:48:55,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:48:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 1510 states, 810 states have (on average 1.2703703703703704) internal successors, (1029), 841 states have internal predecessors, (1029), 618 states have call successors, (618), 81 states have call predecessors, (618), 80 states have return successors, (611), 600 states have call predecessors, (611), 611 states have call successors, (611) [2022-11-03 02:48:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-03 02:48:55,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:48:55,888 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:48:55,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:48:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:48:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1970614518, now seen corresponding path program 1 times [2022-11-03 02:48:55,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:48:55,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045500720] [2022-11-03 02:48:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:55,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:48:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:48:57,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:48:57,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045500720] [2022-11-03 02:48:57,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045500720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:48:57,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:48:57,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:48:57,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313612925] [2022-11-03 02:48:57,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:48:57,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:48:57,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:48:57,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:48:57,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:48:57,407 INFO L87 Difference]: Start difference. First operand has 1510 states, 810 states have (on average 1.2703703703703704) internal successors, (1029), 841 states have internal predecessors, (1029), 618 states have call successors, (618), 81 states have call predecessors, (618), 80 states have return successors, (611), 600 states have call predecessors, (611), 611 states have call successors, (611) Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:49:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:06,434 INFO L93 Difference]: Finished difference Result 4467 states and 6715 transitions. [2022-11-03 02:49:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:49:06,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 149 [2022-11-03 02:49:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:06,495 INFO L225 Difference]: With dead ends: 4467 [2022-11-03 02:49:06,495 INFO L226 Difference]: Without dead ends: 2955 [2022-11-03 02:49:06,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:49:06,521 INFO L413 NwaCegarLoop]: 2801 mSDtfsCounter, 2185 mSDsluCounter, 8151 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 10467 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:06,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 10467 Invalid, 682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-03 02:49:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2022-11-03 02:49:06,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2946. [2022-11-03 02:49:06,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2946 states, 1590 states have (on average 1.259748427672956) internal successors, (2003), 1634 states have internal predecessors, (2003), 1198 states have call successors, (1198), 158 states have call predecessors, (1198), 157 states have return successors, (1199), 1175 states have call predecessors, (1199), 1197 states have call successors, (1199) [2022-11-03 02:49:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2946 states to 2946 states and 4400 transitions. [2022-11-03 02:49:06,985 INFO L78 Accepts]: Start accepts. Automaton has 2946 states and 4400 transitions. Word has length 149 [2022-11-03 02:49:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:06,994 INFO L495 AbstractCegarLoop]: Abstraction has 2946 states and 4400 transitions. [2022-11-03 02:49:06,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:49:06,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2946 states and 4400 transitions. [2022-11-03 02:49:07,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-03 02:49:07,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:07,021 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:07,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:49:07,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:07,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash -163999385, now seen corresponding path program 1 times [2022-11-03 02:49:07,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:07,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401727378] [2022-11-03 02:49:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:07,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:49:07,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:07,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401727378] [2022-11-03 02:49:07,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401727378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:07,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:07,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:49:07,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584569607] [2022-11-03 02:49:07,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:07,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:07,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:07,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:49:07,873 INFO L87 Difference]: Start difference. First operand 2946 states and 4400 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:49:16,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:16,426 INFO L93 Difference]: Finished difference Result 5888 states and 8793 transitions. [2022-11-03 02:49:16,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:49:16,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 147 [2022-11-03 02:49:16,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:16,455 INFO L225 Difference]: With dead ends: 5888 [2022-11-03 02:49:16,455 INFO L226 Difference]: Without dead ends: 2960 [2022-11-03 02:49:16,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:49:16,482 INFO L413 NwaCegarLoop]: 2784 mSDtfsCounter, 2168 mSDsluCounter, 8095 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 10400 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:16,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 10400 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-03 02:49:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2022-11-03 02:49:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 2951. [2022-11-03 02:49:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2951 states, 1594 states have (on average 1.2590966122961105) internal successors, (2007), 1638 states have internal predecessors, (2007), 1198 states have call successors, (1198), 159 states have call predecessors, (1198), 158 states have return successors, (1199), 1175 states have call predecessors, (1199), 1197 states have call successors, (1199) [2022-11-03 02:49:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2951 states to 2951 states and 4404 transitions. [2022-11-03 02:49:16,737 INFO L78 Accepts]: Start accepts. Automaton has 2951 states and 4404 transitions. Word has length 147 [2022-11-03 02:49:16,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:16,739 INFO L495 AbstractCegarLoop]: Abstraction has 2951 states and 4404 transitions. [2022-11-03 02:49:16,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:49:16,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 4404 transitions. [2022-11-03 02:49:16,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-03 02:49:16,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:16,748 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:16,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:49:16,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:16,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:16,760 INFO L85 PathProgramCache]: Analyzing trace with hash 71975813, now seen corresponding path program 1 times [2022-11-03 02:49:16,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:16,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885277865] [2022-11-03 02:49:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:16,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:49:17,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:17,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885277865] [2022-11-03 02:49:17,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885277865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:17,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:17,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:49:17,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463378257] [2022-11-03 02:49:17,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:17,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:49:17,325 INFO L87 Difference]: Start difference. First operand 2951 states and 4404 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:49:19,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:25,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:28,244 INFO L93 Difference]: Finished difference Result 7258 states and 10826 transitions. [2022-11-03 02:49:28,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:49:28,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 146 [2022-11-03 02:49:28,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:28,283 INFO L225 Difference]: With dead ends: 7258 [2022-11-03 02:49:28,283 INFO L226 Difference]: Without dead ends: 4325 [2022-11-03 02:49:28,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:49:28,310 INFO L413 NwaCegarLoop]: 2997 mSDtfsCounter, 2024 mSDsluCounter, 8601 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2030 SdHoareTripleChecker+Valid, 11041 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:28,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2030 Valid, 11041 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 793 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time] [2022-11-03 02:49:28,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2022-11-03 02:49:28,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4296. [2022-11-03 02:49:28,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4296 states, 2322 states have (on average 1.2627045650301465) internal successors, (2932), 2390 states have internal predecessors, (2932), 1738 states have call successors, (1738), 236 states have call predecessors, (1738), 235 states have return successors, (1743), 1701 states have call predecessors, (1743), 1737 states have call successors, (1743) [2022-11-03 02:49:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4296 states to 4296 states and 6413 transitions. [2022-11-03 02:49:28,807 INFO L78 Accepts]: Start accepts. Automaton has 4296 states and 6413 transitions. Word has length 146 [2022-11-03 02:49:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:28,810 INFO L495 AbstractCegarLoop]: Abstraction has 4296 states and 6413 transitions. [2022-11-03 02:49:28,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:49:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4296 states and 6413 transitions. [2022-11-03 02:49:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-03 02:49:28,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:28,826 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:28,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:49:28,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:28,828 INFO L85 PathProgramCache]: Analyzing trace with hash 600785224, now seen corresponding path program 1 times [2022-11-03 02:49:28,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:28,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527718022] [2022-11-03 02:49:28,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:28,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:49:29,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:29,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527718022] [2022-11-03 02:49:29,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527718022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:29,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:49:29,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:49:29,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706287262] [2022-11-03 02:49:29,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:29,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:49:29,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:29,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:49:29,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:49:29,350 INFO L87 Difference]: Start difference. First operand 4296 states and 6413 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:49:38,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:40,680 INFO L93 Difference]: Finished difference Result 7857 states and 11720 transitions. [2022-11-03 02:49:40,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:49:40,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 148 [2022-11-03 02:49:40,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:40,712 INFO L225 Difference]: With dead ends: 7857 [2022-11-03 02:49:40,712 INFO L226 Difference]: Without dead ends: 3975 [2022-11-03 02:49:40,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:49:40,739 INFO L413 NwaCegarLoop]: 2800 mSDtfsCounter, 2166 mSDsluCounter, 8127 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 10448 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:40,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 10448 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 670 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 02:49:40,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2022-11-03 02:49:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 3960. [2022-11-03 02:49:41,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3960 states, 2128 states have (on average 1.2598684210526316) internal successors, (2681), 2188 states have internal predecessors, (2681), 1612 states have call successors, (1612), 220 states have call predecessors, (1612), 219 states have return successors, (1617), 1578 states have call predecessors, (1617), 1611 states have call successors, (1617) [2022-11-03 02:49:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 5910 transitions. [2022-11-03 02:49:41,066 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 5910 transitions. Word has length 148 [2022-11-03 02:49:41,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:49:41,068 INFO L495 AbstractCegarLoop]: Abstraction has 3960 states and 5910 transitions. [2022-11-03 02:49:41,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-03 02:49:41,069 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 5910 transitions. [2022-11-03 02:49:41,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 02:49:41,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:41,080 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:49:41,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:49:41,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:41,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:41,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1173581750, now seen corresponding path program 1 times [2022-11-03 02:49:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:41,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792555397] [2022-11-03 02:49:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:49:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-03 02:49:41,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:49:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792555397] [2022-11-03 02:49:41,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792555397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:49:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341746123] [2022-11-03 02:49:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:41,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:49:41,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:49:41,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:49:41,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:49:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:49:42,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 3206 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:49:43,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:49:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:49:43,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:49:43,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341746123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:49:43,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:49:43,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-03 02:49:43,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666431053] [2022-11-03 02:49:43,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:49:43,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:49:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:49:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:49:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:49:43,180 INFO L87 Difference]: Start difference. First operand 3960 states and 5910 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:49:51,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:54,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:55,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:57,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:49:59,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:49:59,503 INFO L93 Difference]: Finished difference Result 9299 states and 13870 transitions. [2022-11-03 02:49:59,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:49:59,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2022-11-03 02:49:59,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:49:59,558 INFO L225 Difference]: With dead ends: 9299 [2022-11-03 02:49:59,558 INFO L226 Difference]: Without dead ends: 6361 [2022-11-03 02:49:59,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:49:59,584 INFO L413 NwaCegarLoop]: 3071 mSDtfsCounter, 2054 mSDsluCounter, 15324 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 17412 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:49:59,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 17412 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1261 Invalid, 1 Unknown, 0 Unchecked, 15.9s Time] [2022-11-03 02:49:59,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6361 states. [2022-11-03 02:50:00,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6361 to 6327. [2022-11-03 02:50:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6327 states, 3400 states have (on average 1.2629411764705882) internal successors, (4294), 3502 states have internal predecessors, (4294), 2568 states have call successors, (2568), 357 states have call predecessors, (2568), 358 states have return successors, (2586), 2509 states have call predecessors, (2586), 2567 states have call successors, (2586) [2022-11-03 02:50:00,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6327 states to 6327 states and 9448 transitions. [2022-11-03 02:50:00,103 INFO L78 Accepts]: Start accepts. Automaton has 6327 states and 9448 transitions. Word has length 159 [2022-11-03 02:50:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:00,104 INFO L495 AbstractCegarLoop]: Abstraction has 6327 states and 9448 transitions. [2022-11-03 02:50:00,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:50:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 6327 states and 9448 transitions. [2022-11-03 02:50:00,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-03 02:50:00,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:00,121 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:00,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:50:00,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:00,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:00,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash -2088936999, now seen corresponding path program 1 times [2022-11-03 02:50:00,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:00,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766954205] [2022-11-03 02:50:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:00,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:50:01,154 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766954205] [2022-11-03 02:50:01,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766954205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080713923] [2022-11-03 02:50:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:01,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:01,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:01,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:01,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:50:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:02,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 3208 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:50:02,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:50:02,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:50:02,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080713923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:02,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:50:02,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 02:50:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767819941] [2022-11-03 02:50:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:02,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:50:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:50:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:50:02,407 INFO L87 Difference]: Start difference. First operand 6327 states and 9448 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:50:09,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:11,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:15,857 INFO L93 Difference]: Finished difference Result 14044 states and 20956 transitions. [2022-11-03 02:50:15,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:50:15,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 160 [2022-11-03 02:50:15,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:15,914 INFO L225 Difference]: With dead ends: 14044 [2022-11-03 02:50:15,915 INFO L226 Difference]: Without dead ends: 8739 [2022-11-03 02:50:15,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:50:15,944 INFO L413 NwaCegarLoop]: 3081 mSDtfsCounter, 2054 mSDsluCounter, 15364 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 17450 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:15,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2060 Valid, 17450 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1278 Invalid, 1 Unknown, 0 Unchecked, 12.9s Time] [2022-11-03 02:50:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8739 states. [2022-11-03 02:50:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8739 to 8699. [2022-11-03 02:50:16,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8699 states, 4675 states have (on average 1.2641711229946524) internal successors, (5910), 4822 states have internal predecessors, (5910), 3524 states have call successors, (3524), 494 states have call predecessors, (3524), 499 states have return successors, (3558), 3439 states have call predecessors, (3558), 3523 states have call successors, (3558) [2022-11-03 02:50:16,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8699 states to 8699 states and 12992 transitions. [2022-11-03 02:50:16,701 INFO L78 Accepts]: Start accepts. Automaton has 8699 states and 12992 transitions. Word has length 160 [2022-11-03 02:50:16,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:16,703 INFO L495 AbstractCegarLoop]: Abstraction has 8699 states and 12992 transitions. [2022-11-03 02:50:16,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:50:16,703 INFO L276 IsEmpty]: Start isEmpty. Operand 8699 states and 12992 transitions. [2022-11-03 02:50:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 02:50:16,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:16,724 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:16,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:50:16,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:50:16,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:16,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash 678582365, now seen corresponding path program 1 times [2022-11-03 02:50:16,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:16,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881940857] [2022-11-03 02:50:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:16,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:50:17,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:17,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881940857] [2022-11-03 02:50:17,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881940857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:17,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856014016] [2022-11-03 02:50:17,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:17,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:17,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:17,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:17,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:50:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:18,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 3210 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:50:18,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:50:18,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:50:18,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856014016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:18,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:50:18,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 02:50:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731723810] [2022-11-03 02:50:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:50:18,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:50:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:50:18,951 INFO L87 Difference]: Start difference. First operand 8699 states and 12992 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:50:25,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:27,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:30,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:32,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:35,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:37,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:41,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:50:41,920 INFO L93 Difference]: Finished difference Result 18980 states and 28332 transitions. [2022-11-03 02:50:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:50:41,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2022-11-03 02:50:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:50:41,981 INFO L225 Difference]: With dead ends: 18980 [2022-11-03 02:50:41,981 INFO L226 Difference]: Without dead ends: 11303 [2022-11-03 02:50:42,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:50:42,020 INFO L413 NwaCegarLoop]: 3173 mSDtfsCounter, 2201 mSDsluCounter, 15739 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 17910 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:50:42,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2205 Valid, 17910 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1282 Invalid, 4 Unknown, 0 Unchecked, 22.4s Time] [2022-11-03 02:50:42,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11303 states. [2022-11-03 02:50:42,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11303 to 11238. [2022-11-03 02:50:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11238 states, 6031 states have (on average 1.2631404410545515) internal successors, (7618), 6218 states have internal predecessors, (7618), 4568 states have call successors, (4568), 632 states have call predecessors, (4568), 638 states have return successors, (4609), 4461 states have call predecessors, (4609), 4567 states have call successors, (4609) [2022-11-03 02:50:42,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11238 states to 11238 states and 16795 transitions. [2022-11-03 02:50:42,892 INFO L78 Accepts]: Start accepts. Automaton has 11238 states and 16795 transitions. Word has length 161 [2022-11-03 02:50:42,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:50:42,893 INFO L495 AbstractCegarLoop]: Abstraction has 11238 states and 16795 transitions. [2022-11-03 02:50:42,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:50:42,893 INFO L276 IsEmpty]: Start isEmpty. Operand 11238 states and 16795 transitions. [2022-11-03 02:50:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 02:50:42,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:50:42,929 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:50:42,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:50:43,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 02:50:43,155 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:50:43,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:50:43,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1398722208, now seen corresponding path program 1 times [2022-11-03 02:50:43,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:50:43,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674505734] [2022-11-03 02:50:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:43,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:50:43,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:50:43,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674505734] [2022-11-03 02:50:43,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674505734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:50:43,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313972804] [2022-11-03 02:50:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:50:43,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:50:43,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:50:43,933 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:50:43,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:50:45,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:50:45,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 3212 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:50:45,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:50:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-11-03 02:50:45,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:50:45,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313972804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:50:45,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:50:45,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-03 02:50:45,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048580236] [2022-11-03 02:50:45,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:50:45,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:50:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:50:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:50:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:50:45,134 INFO L87 Difference]: Start difference. First operand 11238 states and 16795 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:50:47,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:49,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:56,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:50:58,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:01,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:51:07,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:07,159 INFO L93 Difference]: Finished difference Result 24608 states and 36751 transitions. [2022-11-03 02:51:07,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:07,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2022-11-03 02:51:07,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:07,248 INFO L225 Difference]: With dead ends: 24608 [2022-11-03 02:51:07,248 INFO L226 Difference]: Without dead ends: 14392 [2022-11-03 02:51:07,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:51:07,299 INFO L413 NwaCegarLoop]: 3143 mSDtfsCounter, 2201 mSDsluCounter, 15619 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2205 SdHoareTripleChecker+Valid, 17760 SdHoareTripleChecker+Invalid, 1288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:07,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2205 Valid, 17760 Invalid, 1288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1284 Invalid, 2 Unknown, 0 Unchecked, 21.3s Time] [2022-11-03 02:51:07,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14392 states. [2022-11-03 02:51:08,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14392 to 11786. [2022-11-03 02:51:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11786 states, 6296 states have (on average 1.2601651842439645) internal successors, (7934), 6487 states have internal predecessors, (7934), 4816 states have call successors, (4816), 667 states have call predecessors, (4816), 673 states have return successors, (4855), 4708 states have call predecessors, (4855), 4815 states have call successors, (4855) [2022-11-03 02:51:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11786 states to 11786 states and 17605 transitions. [2022-11-03 02:51:08,568 INFO L78 Accepts]: Start accepts. Automaton has 11786 states and 17605 transitions. Word has length 162 [2022-11-03 02:51:08,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:08,568 INFO L495 AbstractCegarLoop]: Abstraction has 11786 states and 17605 transitions. [2022-11-03 02:51:08,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-03 02:51:08,569 INFO L276 IsEmpty]: Start isEmpty. Operand 11786 states and 17605 transitions. [2022-11-03 02:51:08,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-03 02:51:08,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:08,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:08,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:08,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:08,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash 944050233, now seen corresponding path program 1 times [2022-11-03 02:51:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:08,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600194330] [2022-11-03 02:51:08,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:08,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-03 02:51:09,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:09,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600194330] [2022-11-03 02:51:09,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600194330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:09,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:09,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:09,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995335659] [2022-11-03 02:51:09,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:09,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:09,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:09,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:09,162 INFO L87 Difference]: Start difference. First operand 11786 states and 17605 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:51:11,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:11,414 INFO L93 Difference]: Finished difference Result 22955 states and 34204 transitions. [2022-11-03 02:51:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:11,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 173 [2022-11-03 02:51:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:11,476 INFO L225 Difference]: With dead ends: 22955 [2022-11-03 02:51:11,476 INFO L226 Difference]: Without dead ends: 11187 [2022-11-03 02:51:11,527 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:51:11,528 INFO L413 NwaCegarLoop]: 1999 mSDtfsCounter, 2144 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2144 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:11,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2144 Valid, 1999 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-03 02:51:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11187 states. [2022-11-03 02:51:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11187 to 11187. [2022-11-03 02:51:12,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11187 states, 5926 states have (on average 1.2477219034762066) internal successors, (7394), 6108 states have internal predecessors, (7394), 4595 states have call successors, (4595), 659 states have call predecessors, (4595), 665 states have return successors, (4626), 4487 states have call predecessors, (4626), 4594 states have call successors, (4626) [2022-11-03 02:51:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11187 states to 11187 states and 16615 transitions. [2022-11-03 02:51:12,403 INFO L78 Accepts]: Start accepts. Automaton has 11187 states and 16615 transitions. Word has length 173 [2022-11-03 02:51:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:12,406 INFO L495 AbstractCegarLoop]: Abstraction has 11187 states and 16615 transitions. [2022-11-03 02:51:12,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:51:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 11187 states and 16615 transitions. [2022-11-03 02:51:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-03 02:51:12,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:12,431 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:12,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:51:12,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:12,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:12,432 INFO L85 PathProgramCache]: Analyzing trace with hash -804086289, now seen corresponding path program 1 times [2022-11-03 02:51:12,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:12,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842137682] [2022-11-03 02:51:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-03 02:51:12,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:12,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842137682] [2022-11-03 02:51:12,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842137682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:12,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:12,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:51:12,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044534065] [2022-11-03 02:51:12,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:12,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:51:12,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:51:12,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:51:12,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:51:12,667 INFO L87 Difference]: Start difference. First operand 11187 states and 16615 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:51:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:17,817 INFO L93 Difference]: Finished difference Result 28888 states and 42814 transitions. [2022-11-03 02:51:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:51:17,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 172 [2022-11-03 02:51:17,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:17,906 INFO L225 Difference]: With dead ends: 28888 [2022-11-03 02:51:17,906 INFO L226 Difference]: Without dead ends: 17719 [2022-11-03 02:51:17,959 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:51:17,960 INFO L413 NwaCegarLoop]: 2472 mSDtfsCounter, 1726 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:17,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1726 Valid, 4414 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-03 02:51:17,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17719 states. [2022-11-03 02:51:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17719 to 17688. [2022-11-03 02:51:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17688 states, 9460 states have (on average 1.2463002114164905) internal successors, (11790), 9741 states have internal predecessors, (11790), 7152 states have call successors, (7152), 1062 states have call predecessors, (7152), 1075 states have return successors, (7243), 6992 states have call predecessors, (7243), 7151 states have call successors, (7243) [2022-11-03 02:51:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17688 states to 17688 states and 26185 transitions. [2022-11-03 02:51:19,171 INFO L78 Accepts]: Start accepts. Automaton has 17688 states and 26185 transitions. Word has length 172 [2022-11-03 02:51:19,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:19,171 INFO L495 AbstractCegarLoop]: Abstraction has 17688 states and 26185 transitions. [2022-11-03 02:51:19,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:51:19,172 INFO L276 IsEmpty]: Start isEmpty. Operand 17688 states and 26185 transitions. [2022-11-03 02:51:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-03 02:51:19,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:19,178 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:19,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:51:19,179 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:19,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1894062318, now seen corresponding path program 1 times [2022-11-03 02:51:19,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:51:19,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260075112] [2022-11-03 02:51:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:19,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:51:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-03 02:51:19,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:51:19,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260075112] [2022-11-03 02:51:19,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260075112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:51:19,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118997090] [2022-11-03 02:51:19,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:19,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:51:19,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:51:19,951 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:51:19,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f74a7063-7130-4a04-87d9-a60548c31906/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:51:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:21,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 3279 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:21,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-03 02:51:21,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:51:21,748 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-03 02:51:21,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118997090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:51:21,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [762698131] [2022-11-03 02:51:21,773 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-11-03 02:51:21,773 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:51:21,777 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:51:21,783 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:51:21,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:51:25,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2022-11-03 02:51:25,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2022-11-03 02:51:25,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2022-11-03 02:51:27,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:27,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:51:45,050 INFO L244 Elim1Store]: Index analysis took 18427 ms