./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--vlsi_ir.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:30:12,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:30:12,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:30:12,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:30:12,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:30:12,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:30:12,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:30:12,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:30:12,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:30:12,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:30:12,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:30:12,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:30:12,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:30:12,905 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:30:12,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:30:12,914 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:30:12,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:30:12,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:30:12,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:30:12,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:30:12,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:30:12,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:30:12,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:30:12,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:30:12,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:30:12,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:30:12,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:30:12,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:30:12,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:30:12,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:30:12,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:30:12,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:30:12,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:30:12,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:30:12,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:30:12,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:30:12,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:30:12,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:30:12,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:30:12,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:30:12,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:30:12,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:30:13,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:30:13,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:30:13,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:30:13,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:30:13,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:30:13,015 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:30:13,015 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:30:13,016 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:30:13,016 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:30:13,016 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:30:13,017 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:30:13,017 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:30:13,018 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:30:13,018 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:30:13,018 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:30:13,019 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:30:13,019 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:30:13,019 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:30:13,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:30:13,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:30:13,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:30:13,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:30:13,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:30:13,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:30:13,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:30:13,021 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:30:13,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:30:13,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:30:13,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:30:13,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:30:13,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:30:13,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:30:13,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:30:13,025 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:30:13,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:30:13,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:30:13,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:30:13,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:30:13,027 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3be4ac024b7f357f41d231fb5742f86a984717c473cc6044544e39e88c4f03b3 [2021-11-23 02:30:13,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:30:13,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:30:13,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:30:13,329 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:30:13,331 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:30:13,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-23 02:30:13,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/data/c5e3ce9ca/51c9215618a44b53aa4ff1fe55c88187/FLAG023df179b [2021-11-23 02:30:14,196 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:30:14,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-23 02:30:14,260 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/data/c5e3ce9ca/51c9215618a44b53aa4ff1fe55c88187/FLAG023df179b [2021-11-23 02:30:14,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/data/c5e3ce9ca/51c9215618a44b53aa4ff1fe55c88187 [2021-11-23 02:30:14,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:30:14,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:30:14,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:30:14,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:30:14,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:30:14,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:14" (1/1) ... [2021-11-23 02:30:14,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19a1065e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:14, skipping insertion in model container [2021-11-23 02:30:14,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:30:14" (1/1) ... [2021-11-23 02:30:14,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:30:14,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:30:17,290 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_570c1802-04b4-4e12-8343-7403909752dd/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-23 02:30:17,351 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-23 02:30:17,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:30:17,419 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:30:17,911 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_570c1802-04b4-4e12-8343-7403909752dd/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i[293856,293869] [2021-11-23 02:30:17,916 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-23 02:30:17,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:30:18,061 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:30:18,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18 WrapperNode [2021-11-23 02:30:18,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:30:18,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:30:18,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:30:18,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:30:18,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,395 INFO L137 Inliner]: procedures = 275, calls = 1982, calls flagged for inlining = 131, calls inlined = 123, statements flattened = 4568 [2021-11-23 02:30:18,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:30:18,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:30:18,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:30:18,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:30:18,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:30:18,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:30:18,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:30:18,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:30:18,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (1/1) ... [2021-11-23 02:30:18,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:30:18,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:18,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:30:18,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:30:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 02:30:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 02:30:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_shutdown_2 [2021-11-23 02:30:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_shutdown_2 [2021-11-23 02:30:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:30:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:30:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:30:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:30:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:30:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:30:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:30:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:30:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:30:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:30:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-23 02:30:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-23 02:30:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2021-11-23 02:30:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2021-11-23 02:30:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:30:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:30:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2021-11-23 02:30:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2021-11-23 02:30:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2021-11-23 02:30:18,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2021-11-23 02:30:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:30:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:30:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2021-11-23 02:30:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2021-11-23 02:30:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2021-11-23 02:30:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2021-11-23 02:30:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:30:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:30:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:30:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:30:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2021-11-23 02:30:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2021-11-23 02:30:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:30:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:30:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 02:30:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 02:30:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 02:30:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 02:30:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:30:18,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:30:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:30:18,810 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:30:18,810 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:30:18,811 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:30:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2021-11-23 02:30:18,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2021-11-23 02:30:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2021-11-23 02:30:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2021-11-23 02:30:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-23 02:30:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-23 02:30:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:30:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2021-11-23 02:30:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2021-11-23 02:30:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:30:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:30:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:30:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-23 02:30:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-23 02:30:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-23 02:30:18,815 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2021-11-23 02:30:18,815 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2021-11-23 02:30:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_us_delta [2021-11-23 02:30:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_us_delta [2021-11-23 02:30:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:30:18,816 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:30:18,816 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2021-11-23 02:30:18,817 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2021-11-23 02:30:18,817 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2021-11-23 02:30:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2021-11-23 02:30:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:30:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:30:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:30:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2021-11-23 02:30:18,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2021-11-23 02:30:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2021-11-23 02:30:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2021-11-23 02:30:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:30:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2021-11-23 02:30:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2021-11-23 02:30:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2021-11-23 02:30:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2021-11-23 02:30:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 02:30:18,820 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 02:30:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2021-11-23 02:30:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2021-11-23 02:30:18,822 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-23 02:30:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-23 02:30:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:30:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:30:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:30:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:30:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-23 02:30:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-23 02:30:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:30:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:30:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2021-11-23 02:30:18,824 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2021-11-23 02:30:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:30:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2021-11-23 02:30:18,825 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2021-11-23 02:30:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:30:18,826 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:30:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:30:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2021-11-23 02:30:18,827 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2021-11-23 02:30:18,828 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2021-11-23 02:30:18,830 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2021-11-23 02:30:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:30:18,830 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:30:18,831 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:30:18,832 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:30:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:30:18,833 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2021-11-23 02:30:18,833 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2021-11-23 02:30:18,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:30:18,839 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:30:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2021-11-23 02:30:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2021-11-23 02:30:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2021-11-23 02:30:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2021-11-23 02:30:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:30:18,840 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:30:18,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 02:30:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 02:30:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-23 02:30:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-23 02:30:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 02:30:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 02:30:18,841 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2021-11-23 02:30:18,841 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2021-11-23 02:30:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:30:18,842 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:30:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:30:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:30:18,842 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:30:18,842 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-23 02:30:18,842 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-23 02:30:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2021-11-23 02:30:18,843 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2021-11-23 02:30:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2021-11-23 02:30:18,843 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2021-11-23 02:30:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:30:18,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:30:18,843 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2021-11-23 02:30:18,844 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2021-11-23 02:30:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2021-11-23 02:30:18,844 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2021-11-23 02:30:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:30:18,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:30:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:30:18,844 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2021-11-23 02:30:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2021-11-23 02:30:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:30:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:30:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-23 02:30:18,845 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-23 02:30:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:30:18,845 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 02:30:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 02:30:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:30:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:30:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:30:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 02:30:18,846 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2021-11-23 02:30:18,846 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2021-11-23 02:30:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-23 02:30:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-23 02:30:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ioctl [2021-11-23 02:30:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ioctl [2021-11-23 02:30:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_2 [2021-11-23 02:30:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_2 [2021-11-23 02:30:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:30:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-23 02:30:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2021-11-23 02:30:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2021-11-23 02:30:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2021-11-23 02:30:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2021-11-23 02:30:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-23 02:30:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-23 02:30:18,850 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2021-11-23 02:30:18,850 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2021-11-23 02:30:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-23 02:30:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-23 02:30:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2021-11-23 02:30:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2021-11-23 02:30:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:30:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2021-11-23 02:30:18,851 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2021-11-23 02:30:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2021-11-23 02:30:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2021-11-23 02:30:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2021-11-23 02:30:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2021-11-23 02:30:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2021-11-23 02:30:18,852 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2021-11-23 02:30:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:30:18,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:30:19,662 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:30:19,668 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:30:20,061 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:30:26,051 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:30:27,133 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:30:27,133 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 02:30:27,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:27 BoogieIcfgContainer [2021-11-23 02:30:27,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:30:27,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:30:27,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:30:27,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:30:27,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:30:14" (1/3) ... [2021-11-23 02:30:27,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2f350c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:27, skipping insertion in model container [2021-11-23 02:30:27,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:30:18" (2/3) ... [2021-11-23 02:30:27,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2f350c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:30:27, skipping insertion in model container [2021-11-23 02:30:27,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:30:27" (3/3) ... [2021-11-23 02:30:27,147 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--irda--vlsi_ir.ko-entry_point.cil.out.i [2021-11-23 02:30:27,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:30:27,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:30:27,230 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:30:27,247 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:30:27,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:30:27,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 1228 states, 727 states have (on average 1.2943603851444292) internal successors, (941), 753 states have internal predecessors, (941), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) [2021-11-23 02:30:27,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 02:30:27,327 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:27,328 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:27,329 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:27,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:27,334 INFO L85 PathProgramCache]: Analyzing trace with hash -306098764, now seen corresponding path program 1 times [2021-11-23 02:30:27,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:27,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594686268] [2021-11-23 02:30:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:27,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-11-23 02:30:28,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:28,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594686268] [2021-11-23 02:30:28,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594686268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:28,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:28,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:30:28,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98545182] [2021-11-23 02:30:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:28,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:30:28,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:28,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:30:28,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:28,186 INFO L87 Difference]: Start difference. First operand has 1228 states, 727 states have (on average 1.2943603851444292) internal successors, (941), 753 states have internal predecessors, (941), 409 states have call successors, (409), 91 states have call predecessors, (409), 90 states have return successors, (402), 401 states have call predecessors, (402), 402 states have call successors, (402) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 02:30:30,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:33,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:35,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:35,164 INFO L93 Difference]: Finished difference Result 3233 states and 4633 transitions. [2021-11-23 02:30:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:30:35,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2021-11-23 02:30:35,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:35,198 INFO L225 Difference]: With dead ends: 3233 [2021-11-23 02:30:35,198 INFO L226 Difference]: Without dead ends: 1999 [2021-11-23 02:30:35,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:35,218 INFO L933 BasicCegarLoop]: 1800 mSDtfsCounter, 1144 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:35,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 3287 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-23 02:30:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2021-11-23 02:30:35,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1995. [2021-11-23 02:30:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1995 states, 1187 states have (on average 1.2771693344566133) internal successors, (1516), 1212 states have internal predecessors, (1516), 650 states have call successors, (650), 158 states have call predecessors, (650), 157 states have return successors, (653), 646 states have call predecessors, (653), 649 states have call successors, (653) [2021-11-23 02:30:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2819 transitions. [2021-11-23 02:30:35,452 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2819 transitions. Word has length 131 [2021-11-23 02:30:35,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:35,455 INFO L470 AbstractCegarLoop]: Abstraction has 1995 states and 2819 transitions. [2021-11-23 02:30:35,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-23 02:30:35,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2819 transitions. [2021-11-23 02:30:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-23 02:30:35,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:35,483 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:35,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:30:35,484 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:35,486 INFO L85 PathProgramCache]: Analyzing trace with hash -79676592, now seen corresponding path program 1 times [2021-11-23 02:30:35,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:35,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838063796] [2021-11-23 02:30:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:35,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:30:35,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:35,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838063796] [2021-11-23 02:30:35,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838063796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:35,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:35,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:30:35,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196001558] [2021-11-23 02:30:35,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:35,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:30:35,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:35,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:30:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:30:35,974 INFO L87 Difference]: Start difference. First operand 1995 states and 2819 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:30:38,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:42,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:47,002 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:47,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:47,078 INFO L93 Difference]: Finished difference Result 5852 states and 8264 transitions. [2021-11-23 02:30:47,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:30:47,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 185 [2021-11-23 02:30:47,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:47,114 INFO L225 Difference]: With dead ends: 5852 [2021-11-23 02:30:47,114 INFO L226 Difference]: Without dead ends: 3882 [2021-11-23 02:30:47,126 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:30:47,128 INFO L933 BasicCegarLoop]: 2102 mSDtfsCounter, 1546 mSDsluCounter, 6378 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 7773 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:47,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1550 Valid, 7773 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 991 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2021-11-23 02:30:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2021-11-23 02:30:47,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3858. [2021-11-23 02:30:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 2296 states have (on average 1.279616724738676) internal successors, (2938), 2354 states have internal predecessors, (2938), 1249 states have call successors, (1249), 313 states have call predecessors, (1249), 312 states have return successors, (1256), 1233 states have call predecessors, (1256), 1248 states have call successors, (1256) [2021-11-23 02:30:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5443 transitions. [2021-11-23 02:30:47,360 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5443 transitions. Word has length 185 [2021-11-23 02:30:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:47,362 INFO L470 AbstractCegarLoop]: Abstraction has 3858 states and 5443 transitions. [2021-11-23 02:30:47,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:30:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5443 transitions. [2021-11-23 02:30:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-23 02:30:47,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:47,513 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:47,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:30:47,515 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:47,517 INFO L85 PathProgramCache]: Analyzing trace with hash -553608569, now seen corresponding path program 1 times [2021-11-23 02:30:47,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:47,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441755037] [2021-11-23 02:30:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:47,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:30:47,840 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:47,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441755037] [2021-11-23 02:30:47,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441755037] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:47,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:47,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:30:47,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720859464] [2021-11-23 02:30:47,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:47,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:30:47,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:47,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:30:47,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:30:47,844 INFO L87 Difference]: Start difference. First operand 3858 states and 5443 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:30:49,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:56,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:56,212 INFO L93 Difference]: Finished difference Result 8416 states and 11795 transitions. [2021-11-23 02:30:56,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:30:56,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 188 [2021-11-23 02:30:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:56,257 INFO L225 Difference]: With dead ends: 8416 [2021-11-23 02:30:56,258 INFO L226 Difference]: Without dead ends: 5758 [2021-11-23 02:30:56,273 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:30:56,274 INFO L933 BasicCegarLoop]: 1903 mSDtfsCounter, 1540 mSDsluCounter, 5914 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:56,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 7174 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 891 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-23 02:30:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2021-11-23 02:30:56,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 5724. [2021-11-23 02:30:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5724 states, 3411 states have (on average 1.279683377308707) internal successors, (4365), 3492 states have internal predecessors, (4365), 1846 states have call successors, (1846), 467 states have call predecessors, (1846), 466 states have return successors, (1857), 1828 states have call predecessors, (1857), 1845 states have call successors, (1857) [2021-11-23 02:30:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 8068 transitions. [2021-11-23 02:30:56,582 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 8068 transitions. Word has length 188 [2021-11-23 02:30:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:56,583 INFO L470 AbstractCegarLoop]: Abstraction has 5724 states and 8068 transitions. [2021-11-23 02:30:56,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:30:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 8068 transitions. [2021-11-23 02:30:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-23 02:30:56,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:56,593 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:56,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:30:56,594 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:56,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash 58142163, now seen corresponding path program 1 times [2021-11-23 02:30:56,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:56,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664061119] [2021-11-23 02:30:56,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:56,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:30:56,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:56,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664061119] [2021-11-23 02:30:56,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664061119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:56,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:56,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:30:56,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269686921] [2021-11-23 02:30:56,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:56,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:30:56,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:30:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:30:56,871 INFO L87 Difference]: Start difference. First operand 5724 states and 8068 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:30:58,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:04,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:06,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:07,901 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:08,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:08,620 INFO L93 Difference]: Finished difference Result 10292 states and 14424 transitions. [2021-11-23 02:31:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:31:08,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 187 [2021-11-23 02:31:08,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:08,665 INFO L225 Difference]: With dead ends: 10292 [2021-11-23 02:31:08,665 INFO L226 Difference]: Without dead ends: 5766 [2021-11-23 02:31:08,688 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:31:08,689 INFO L933 BasicCegarLoop]: 1903 mSDtfsCounter, 1540 mSDsluCounter, 5914 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:08,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 7174 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 891 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2021-11-23 02:31:08,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2021-11-23 02:31:09,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5732. [2021-11-23 02:31:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 3419 states have (on average 1.2790289558350394) internal successors, (4373), 3498 states have internal predecessors, (4373), 1844 states have call successors, (1844), 469 states have call predecessors, (1844), 468 states have return successors, (1855), 1828 states have call predecessors, (1855), 1843 states have call successors, (1855) [2021-11-23 02:31:09,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 8072 transitions. [2021-11-23 02:31:09,065 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 8072 transitions. Word has length 187 [2021-11-23 02:31:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:09,066 INFO L470 AbstractCegarLoop]: Abstraction has 5732 states and 8072 transitions. [2021-11-23 02:31:09,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:31:09,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 8072 transitions. [2021-11-23 02:31:09,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-23 02:31:09,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:09,076 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:09,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:31:09,077 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:09,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1908911268, now seen corresponding path program 1 times [2021-11-23 02:31:09,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:09,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663302456] [2021-11-23 02:31:09,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:09,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:31:09,372 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:09,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663302456] [2021-11-23 02:31:09,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663302456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:09,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:31:09,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:31:09,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645873063] [2021-11-23 02:31:09,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:09,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:31:09,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:09,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:31:09,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:31:09,385 INFO L87 Difference]: Start difference. First operand 5732 states and 8072 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:31:11,435 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:17,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:17,938 INFO L93 Difference]: Finished difference Result 10104 states and 14123 transitions. [2021-11-23 02:31:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:31:17,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 186 [2021-11-23 02:31:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:17,982 INFO L225 Difference]: With dead ends: 10104 [2021-11-23 02:31:17,982 INFO L226 Difference]: Without dead ends: 5568 [2021-11-23 02:31:18,005 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:31:18,006 INFO L933 BasicCegarLoop]: 1903 mSDtfsCounter, 1540 mSDsluCounter, 5914 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 7174 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:18,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 7174 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 891 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 02:31:18,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2021-11-23 02:31:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5540. [2021-11-23 02:31:18,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5540 states, 3306 states have (on average 1.2770719903206291) internal successors, (4222), 3375 states have internal predecessors, (4222), 1769 states have call successors, (1769), 465 states have call predecessors, (1769), 464 states have return successors, (1780), 1757 states have call predecessors, (1780), 1768 states have call successors, (1780) [2021-11-23 02:31:18,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 7771 transitions. [2021-11-23 02:31:18,335 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 7771 transitions. Word has length 186 [2021-11-23 02:31:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:18,336 INFO L470 AbstractCegarLoop]: Abstraction has 5540 states and 7771 transitions. [2021-11-23 02:31:18,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-11-23 02:31:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 7771 transitions. [2021-11-23 02:31:18,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-23 02:31:18,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:18,345 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:18,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:31:18,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:18,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:18,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1146557114, now seen corresponding path program 1 times [2021-11-23 02:31:18,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:18,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955510176] [2021-11-23 02:31:18,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:18,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-23 02:31:18,650 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:18,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955510176] [2021-11-23 02:31:18,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955510176] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:31:18,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438052722] [2021-11-23 02:31:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:18,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:18,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:18,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:31:18,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:31:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:19,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 3556 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:31:19,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:31:20,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:31:20,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438052722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:20,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:31:20,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-23 02:31:20,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758446851] [2021-11-23 02:31:20,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:20,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:31:20,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:20,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:31:20,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:31:20,037 INFO L87 Difference]: Start difference. First operand 5540 states and 7771 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:31:22,082 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:31,206 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:39,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:41,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:41,098 INFO L93 Difference]: Finished difference Result 13006 states and 18244 transitions. [2021-11-23 02:31:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:31:41,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 198 [2021-11-23 02:31:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:41,152 INFO L225 Difference]: With dead ends: 13006 [2021-11-23 02:31:41,152 INFO L226 Difference]: Without dead ends: 9148 [2021-11-23 02:31:41,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-11-23 02:31:41,172 INFO L933 BasicCegarLoop]: 2594 mSDtfsCounter, 1539 mSDsluCounter, 13513 mSDsCounter, 0 mSdLazyCounter, 2070 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 14473 SdHoareTripleChecker+Invalid, 2073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2070 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:41,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 14473 Invalid, 2073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2070 Invalid, 2 Unknown, 0 Unchecked, 20.6s Time] [2021-11-23 02:31:41,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9148 states. [2021-11-23 02:31:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9148 to 9086. [2021-11-23 02:31:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9086 states, 5427 states have (on average 1.2782384374424176) internal successors, (6937), 5548 states have internal predecessors, (6937), 2888 states have call successors, (2888), 767 states have call predecessors, (2888), 770 states have return successors, (2917), 2864 states have call predecessors, (2917), 2887 states have call successors, (2917) [2021-11-23 02:31:41,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9086 states to 9086 states and 12742 transitions. [2021-11-23 02:31:41,567 INFO L78 Accepts]: Start accepts. Automaton has 9086 states and 12742 transitions. Word has length 198 [2021-11-23 02:31:41,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:41,568 INFO L470 AbstractCegarLoop]: Abstraction has 9086 states and 12742 transitions. [2021-11-23 02:31:41,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:31:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 9086 states and 12742 transitions. [2021-11-23 02:31:41,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-23 02:31:41,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:41,579 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:41,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:31:41,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:41,798 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:41,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:41,799 INFO L85 PathProgramCache]: Analyzing trace with hash -604278089, now seen corresponding path program 1 times [2021-11-23 02:31:41,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:41,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962077432] [2021-11-23 02:31:41,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:41,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:31:42,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962077432] [2021-11-23 02:31:42,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962077432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:31:42,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646533736] [2021-11-23 02:31:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:42,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:42,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:31:42,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:31:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:43,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 3558 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:31:43,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:31:43,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:31:43,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646533736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:31:43,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:31:43,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-23 02:31:43,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656441856] [2021-11-23 02:31:43,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:31:43,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:31:43,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:31:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:31:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:31:43,480 INFO L87 Difference]: Start difference. First operand 9086 states and 12742 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:31:45,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:54,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:57,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:04,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:06,020 INFO L93 Difference]: Finished difference Result 20120 states and 28206 transitions. [2021-11-23 02:32:06,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:32:06,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 199 [2021-11-23 02:32:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:06,075 INFO L225 Difference]: With dead ends: 20120 [2021-11-23 02:32:06,075 INFO L226 Difference]: Without dead ends: 12716 [2021-11-23 02:32:06,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:32:06,103 INFO L933 BasicCegarLoop]: 2836 mSDtfsCounter, 1539 mSDsluCounter, 14617 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 15671 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:06,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 15671 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2259 Invalid, 1 Unknown, 0 Unchecked, 22.1s Time] [2021-11-23 02:32:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12716 states. [2021-11-23 02:32:06,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12716 to 12642. [2021-11-23 02:32:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12642 states, 7554 states have (on average 1.2785279322213396) internal successors, (9658), 7733 states have internal predecessors, (9658), 4007 states have call successors, (4007), 1069 states have call predecessors, (4007), 1080 states have return successors, (4060), 3969 states have call predecessors, (4060), 4006 states have call successors, (4060) [2021-11-23 02:32:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12642 states to 12642 states and 17725 transitions. [2021-11-23 02:32:06,659 INFO L78 Accepts]: Start accepts. Automaton has 12642 states and 17725 transitions. Word has length 199 [2021-11-23 02:32:06,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:06,660 INFO L470 AbstractCegarLoop]: Abstraction has 12642 states and 17725 transitions. [2021-11-23 02:32:06,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:32:06,661 INFO L276 IsEmpty]: Start isEmpty. Operand 12642 states and 17725 transitions. [2021-11-23 02:32:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-23 02:32:06,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:06,673 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:06,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:06,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:06,887 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:06,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2041693229, now seen corresponding path program 1 times [2021-11-23 02:32:06,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:06,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992880725] [2021-11-23 02:32:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:06,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:32:07,216 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:07,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992880725] [2021-11-23 02:32:07,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992880725] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:32:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600903976] [2021-11-23 02:32:07,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:07,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:07,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:07,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:07,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:32:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:08,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 3560 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:32:08,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:08,593 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:32:08,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:08,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600903976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:08,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:32:08,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-23 02:32:08,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485331171] [2021-11-23 02:32:08,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:08,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:32:08,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:08,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:32:08,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:32:08,595 INFO L87 Difference]: Start difference. First operand 12642 states and 17725 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:32:10,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:20,641 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:25,170 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:26,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:33,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:34,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:34,600 INFO L93 Difference]: Finished difference Result 27228 states and 38164 transitions. [2021-11-23 02:32:34,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:32:34,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 200 [2021-11-23 02:32:34,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:34,678 INFO L225 Difference]: With dead ends: 27228 [2021-11-23 02:32:34,678 INFO L226 Difference]: Without dead ends: 16268 [2021-11-23 02:32:34,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:32:34,715 INFO L933 BasicCegarLoop]: 2836 mSDtfsCounter, 1539 mSDsluCounter, 14617 mSDsCounter, 0 mSdLazyCounter, 2258 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 15671 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2258 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:34,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 15671 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2258 Invalid, 2 Unknown, 0 Unchecked, 25.6s Time] [2021-11-23 02:32:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16268 states. [2021-11-23 02:32:35,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16268 to 12644. [2021-11-23 02:32:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12644 states, 7556 states have (on average 1.278454208575966) internal successors, (9660), 7733 states have internal predecessors, (9660), 4007 states have call successors, (4007), 1069 states have call predecessors, (4007), 1080 states have return successors, (4060), 3971 states have call predecessors, (4060), 4006 states have call successors, (4060) [2021-11-23 02:32:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12644 states to 12644 states and 17727 transitions. [2021-11-23 02:32:35,305 INFO L78 Accepts]: Start accepts. Automaton has 12644 states and 17727 transitions. Word has length 200 [2021-11-23 02:32:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:35,306 INFO L470 AbstractCegarLoop]: Abstraction has 12644 states and 17727 transitions. [2021-11-23 02:32:35,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:32:35,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12644 states and 17727 transitions. [2021-11-23 02:32:35,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-23 02:32:35,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:35,320 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:35,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:35,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:35,535 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:32:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1182648894, now seen corresponding path program 1 times [2021-11-23 02:32:35,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:32:35,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43202616] [2021-11-23 02:32:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:35,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:32:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:32:35,791 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:32:35,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43202616] [2021-11-23 02:32:35,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43202616] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:32:35,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576458998] [2021-11-23 02:32:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:32:35,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:35,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:32:35,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:32:35,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:32:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:32:36,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 3562 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:32:36,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-23 02:32:37,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:32:37,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576458998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:37,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:32:37,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-23 02:32:37,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880102466] [2021-11-23 02:32:37,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:37,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:32:37,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:32:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:32:37,166 INFO L87 Difference]: Start difference. First operand 12644 states and 17727 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:32:39,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:46,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:52,778 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:56,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:32:59,293 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:00,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:00,524 INFO L93 Difference]: Finished difference Result 27234 states and 38170 transitions. [2021-11-23 02:33:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:33:00,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 201 [2021-11-23 02:33:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:00,606 INFO L225 Difference]: With dead ends: 27234 [2021-11-23 02:33:00,606 INFO L226 Difference]: Without dead ends: 16272 [2021-11-23 02:33:00,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:33:00,644 INFO L933 BasicCegarLoop]: 2836 mSDtfsCounter, 1539 mSDsluCounter, 14617 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 15671 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:00,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 15671 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2259 Invalid, 1 Unknown, 0 Unchecked, 22.8s Time] [2021-11-23 02:33:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16272 states. [2021-11-23 02:33:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16272 to 12646. [2021-11-23 02:33:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12646 states, 7558 states have (on average 1.2783805239481345) internal successors, (9662), 7733 states have internal predecessors, (9662), 4007 states have call successors, (4007), 1069 states have call predecessors, (4007), 1080 states have return successors, (4060), 3973 states have call predecessors, (4060), 4006 states have call successors, (4060) [2021-11-23 02:33:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12646 states to 12646 states and 17729 transitions. [2021-11-23 02:33:01,225 INFO L78 Accepts]: Start accepts. Automaton has 12646 states and 17729 transitions. Word has length 201 [2021-11-23 02:33:01,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:01,226 INFO L470 AbstractCegarLoop]: Abstraction has 12646 states and 17729 transitions. [2021-11-23 02:33:01,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-23 02:33:01,227 INFO L276 IsEmpty]: Start isEmpty. Operand 12646 states and 17729 transitions. [2021-11-23 02:33:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-23 02:33:01,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:01,243 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:01,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:33:01,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:01,459 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1932416516, now seen corresponding path program 1 times [2021-11-23 02:33:01,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:01,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718989284] [2021-11-23 02:33:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:01,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-23 02:33:01,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:01,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718989284] [2021-11-23 02:33:01,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718989284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:33:01,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:33:01,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:33:01,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666025114] [2021-11-23 02:33:01,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:33:01,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:33:01,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:33:01,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:33:01,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:01,678 INFO L87 Difference]: Start difference. First operand 12646 states and 17729 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:33:03,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:06,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:08,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:09,823 INFO L93 Difference]: Finished difference Result 32990 states and 46057 transitions. [2021-11-23 02:33:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:33:09,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 201 [2021-11-23 02:33:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:09,912 INFO L225 Difference]: With dead ends: 32990 [2021-11-23 02:33:09,913 INFO L226 Difference]: Without dead ends: 20372 [2021-11-23 02:33:09,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:33:09,951 INFO L933 BasicCegarLoop]: 2319 mSDtfsCounter, 1337 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:09,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 3789 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 537 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-23 02:33:09,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20372 states. [2021-11-23 02:33:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20372 to 20355. [2021-11-23 02:33:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20355 states, 12168 states have (on average 1.2765450361604207) internal successors, (15533), 12491 states have internal predecessors, (15533), 6362 states have call successors, (6362), 1801 states have call predecessors, (6362), 1824 states have return successors, (6441), 6288 states have call predecessors, (6441), 6361 states have call successors, (6441) [2021-11-23 02:33:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20355 states to 20355 states and 28336 transitions. [2021-11-23 02:33:10,755 INFO L78 Accepts]: Start accepts. Automaton has 20355 states and 28336 transitions. Word has length 201 [2021-11-23 02:33:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:10,757 INFO L470 AbstractCegarLoop]: Abstraction has 20355 states and 28336 transitions. [2021-11-23 02:33:10,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 02:33:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 20355 states and 28336 transitions. [2021-11-23 02:33:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-23 02:33:10,769 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:10,769 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:10,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:33:10,770 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:10,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 747889871, now seen corresponding path program 1 times [2021-11-23 02:33:10,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:10,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111325999] [2021-11-23 02:33:10,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:10,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:11,013 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-23 02:33:11,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:11,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111325999] [2021-11-23 02:33:11,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111325999] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:33:11,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590921082] [2021-11-23 02:33:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:11,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:11,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:11,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:11,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_570c1802-04b4-4e12-8343-7403909752dd/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:33:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:11,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 3629 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:33:11,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:12,410 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-23 02:33:12,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:33:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-23 02:33:13,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590921082] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:33:13,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [54763660] [2021-11-23 02:33:13,221 INFO L159 IcfgInterpreter]: Started Sifa with 118 locations of interest [2021-11-23 02:33:13,221 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:33:13,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:33:13,232 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:33:13,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:33:17,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:17,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 53 [2021-11-23 02:33:18,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:18,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:18,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:18,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:19,965 INFO L244 Elim1Store]: Index analysis took 1810 ms