./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-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba --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 f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:44:49,096 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:44:49,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:44:49,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:44:49,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:44:49,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:44:49,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:44:49,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:44:49,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:44:49,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:44:49,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:44:49,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:44:49,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:44:49,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:44:49,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:44:49,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:44:49,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:44:49,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:44:49,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:44:49,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:44:49,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:44:49,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:44:49,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:44:49,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:44:49,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:44:49,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:44:49,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:44:49,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:44:49,199 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:44:49,200 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:44:49,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:44:49,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:44:49,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:44:49,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:44:49,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:44:49,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:44:49,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:44:49,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:44:49,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:44:49,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:44:49,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:44:49,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 02:44:49,253 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:44:49,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:44:49,254 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:44:49,254 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:44:49,255 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:44:49,255 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:44:49,256 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:44:49,256 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:44:49,256 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:44:49,256 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:44:49,257 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:44:49,258 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:44:49,258 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:44:49,258 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:44:49,258 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:44:49,258 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:44:49,259 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:44:49,259 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:44:49,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:44:49,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:44:49,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:44:49,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:44:49,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:44:49,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:44:49,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:44:49,261 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:44:49,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:44:49,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:44:49,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:44:49,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:44:49,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:44:49,262 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:44:49,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:44:49,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:44:49,263 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:44:49,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:44:49,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:44:49,263 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:44:49,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f816b5cf025191130f4fa3c768ff88e2f73399115a7a3b9220171373d5eeca46 [2022-11-22 02:44:49,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:44:49,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:44:49,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:44:49,579 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:44:49,580 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:44:49,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2022-11-22 02:44:52,658 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:44:53,320 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:44:53,320 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2022-11-22 02:44:53,379 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/data/add3e00ad/d2f64cfb001a4bb9b30095cf245c05d6/FLAGaf9b6a314 [2022-11-22 02:44:53,397 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/data/add3e00ad/d2f64cfb001a4bb9b30095cf245c05d6 [2022-11-22 02:44:53,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:44:53,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:44:53,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:44:53,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:44:53,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:44:53,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:44:53" (1/1) ... [2022-11-22 02:44:53,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67b74825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:53, skipping insertion in model container [2022-11-22 02:44:53,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:44:53" (1/1) ... [2022-11-22 02:44:53,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:44:53,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:44:56,950 WARN L237 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_3736a3f9-2416-409e-a09a-e345d54f90e5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2022-11-22 02:44:57,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:44:57,074 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:44:57,876 WARN L237 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_3736a3f9-2416-409e-a09a-e345d54f90e5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i[397231,397244] [2022-11-22 02:44:57,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:44:58,103 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:44:58,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58 WrapperNode [2022-11-22 02:44:58,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:44:58,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:44:58,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:44:58,106 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:44:58,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,367 INFO L138 Inliner]: procedures = 426, calls = 3460, calls flagged for inlining = 207, calls inlined = 116, statements flattened = 4523 [2022-11-22 02:44:58,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:44:58,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:44:58,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:44:58,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:44:58,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,564 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:44:58,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:44:58,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:44:58,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:44:58,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (1/1) ... [2022-11-22 02:44:58,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:44:58,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:44:58,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:44:58,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:44:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-22 02:44:58,689 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2022-11-22 02:44:58,689 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2022-11-22 02:44:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure backend_switch_state [2022-11-22 02:44:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure backend_switch_state [2022-11-22 02:44:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2022-11-22 02:44:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2022-11-22 02:44:58,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-22 02:44:58,690 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-22 02:44:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_hotplug_status_watch [2022-11-22 02:44:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_hotplug_status_watch [2022-11-22 02:44:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-11-22 02:44:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-11-22 02:44:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_unmap_frontend_rings [2022-11-22 02:44:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_unmap_frontend_rings [2022-11-22 02:44:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 02:44:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 02:44:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_xenbus_watch [2022-11-22 02:44:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_xenbus_watch [2022-11-22 02:44:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_kick_thread [2022-11-22 02:44:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_kick_thread [2022-11-22 02:44:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 02:44:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 02:44:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_map_ring_valloc [2022-11-22 02:44:58,693 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_map_ring_valloc [2022-11-22 02:44:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-22 02:44:58,694 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-22 02:44:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure xen_net_read_rate [2022-11-22 02:44:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_net_read_rate [2022-11-22 02:44:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2022-11-22 02:44:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2022-11-22 02:44:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-11-22 02:44:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-11-22 02:44:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-22 02:44:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-22 02:44:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure netback_uevent [2022-11-22 02:44:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_uevent [2022-11-22 02:44:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 02:44:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 02:44:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_carrier_off [2022-11-22 02:44:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_carrier_off [2022-11-22 02:44:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:44:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-22 02:44:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-22 02:44:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 02:44:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 02:44:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 02:44:58,698 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 02:44:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 02:44:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure simple_strtoul [2022-11-22 02:44:58,699 INFO L138 BoogieDeclarations]: Found implementation of procedure simple_strtoul [2022-11-22 02:44:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-22 02:44:58,700 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-22 02:44:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-22 02:44:58,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-22 02:44:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 02:44:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_switch_state [2022-11-22 02:44:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_switch_state [2022-11-22 02:44:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:44:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 02:44:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 02:44:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_deinit_queue [2022-11-22 02:44:58,702 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_deinit_queue [2022-11-22 02:44:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove_recursive [2022-11-22 02:44:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove_recursive [2022-11-22 02:44:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_to_xenbus_device [2022-11-22 02:44:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_to_xenbus_device [2022-11-22 02:44:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure xen_unregister_watchers [2022-11-22 02:44:58,703 INFO L138 BoogieDeclarations]: Found implementation of procedure xen_unregister_watchers [2022-11-22 02:44:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-22 02:44:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-22 02:44:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-22 02:44:58,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-22 02:44:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure frontend_changed [2022-11-22 02:44:58,705 INFO L138 BoogieDeclarations]: Found implementation of procedure frontend_changed [2022-11-22 02:44:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:44:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure set_backend_state [2022-11-22 02:44:58,706 INFO L138 BoogieDeclarations]: Found implementation of procedure set_backend_state [2022-11-22 02:44:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:44:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:44:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_write_io_ring [2022-11-22 02:44:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_write_io_ring [2022-11-22 02:44:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-22 02:44:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-22 02:44:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure kthread_stop [2022-11-22 02:44:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure kthread_stop [2022-11-22 02:44:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_strstate [2022-11-22 02:44:58,708 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_strstate [2022-11-22 02:44:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-22 02:44:58,709 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-22 02:44:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 02:44:58,709 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 02:44:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:44:58,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:44:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 02:44:58,710 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 02:44:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 02:44:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 02:44:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_disconnect [2022-11-22 02:44:58,711 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_disconnect [2022-11-22 02:44:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 02:44:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 02:44:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure napi_schedule [2022-11-22 02:44:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_schedule [2022-11-22 02:44:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_down [2022-11-22 02:44:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_down [2022-11-22 02:44:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-11-22 02:44:58,712 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-11-22 02:44:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure bind_interdomain_evtchn_to_irqhandler [2022-11-22 02:44:58,713 INFO L138 BoogieDeclarations]: Found implementation of procedure bind_interdomain_evtchn_to_irqhandler [2022-11-22 02:44:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_uevent [2022-11-22 02:44:58,716 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_uevent [2022-11-22 02:44:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-22 02:44:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-22 02:44:58,717 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq [2022-11-22 02:44:58,717 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq [2022-11-22 02:44:58,718 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 02:44:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 02:44:58,719 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_fix_features [2022-11-22 02:44:58,719 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_fix_features [2022-11-22 02:44:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_transaction_end [2022-11-22 02:44:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_transaction_end [2022-11-22 02:44:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 02:44:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 02:44:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 02:44:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 02:44:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:44:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:44:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR_OR_NULL [2022-11-22 02:44:58,725 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR_OR_NULL [2022-11-22 02:44:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-11-22 02:44:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-11-22 02:44:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_up [2022-11-22 02:44:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_up [2022-11-22 02:44:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure get_jiffies_64 [2022-11-22 02:44:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure get_jiffies_64 [2022-11-22 02:44:58,726 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 02:44:58,726 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 02:44:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:44:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 02:44:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 02:44:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_unmap_ring_vfree [2022-11-22 02:44:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_unmap_ring_vfree [2022-11-22 02:44:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:44:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_change_mtu [2022-11-22 02:44:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_change_mtu [2022-11-22 02:44:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-11-22 02:44:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-11-22 02:44:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure xenbus_read [2022-11-22 02:44:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure xenbus_read [2022-11-22 02:44:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-11-22 02:44:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-11-22 02:44:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 02:44:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-22 02:44:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-22 02:44:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-22 02:44:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-22 02:44:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 02:44:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 02:44:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure unbind_from_irqhandler [2022-11-22 02:44:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure unbind_from_irqhandler [2022-11-22 02:44:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-11-22 02:44:58,730 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-11-22 02:44:58,730 INFO L130 BoogieDeclarations]: Found specification of procedure netback_remove [2022-11-22 02:44:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure netback_remove [2022-11-22 02:44:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 02:44:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 02:44:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 02:44:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 02:44:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:44:58,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 02:44:58,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 02:44:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure enable_irq [2022-11-22 02:44:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_irq [2022-11-22 02:44:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_napi_schedule_or_enable_events [2022-11-22 02:44:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_napi_schedule_or_enable_events [2022-11-22 02:44:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-22 02:44:58,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-22 02:44:58,732 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-22 02:44:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-22 02:44:58,733 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-11-22 02:44:58,733 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-11-22 02:44:58,734 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-11-22 02:44:58,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-11-22 02:44:58,735 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-22 02:44:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-22 02:44:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-22 02:44:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-22 02:44:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:44:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure xenvif_get_stats [2022-11-22 02:44:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure xenvif_get_stats [2022-11-22 02:44:59,745 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:44:59,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:45:00,075 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 02:45:07,967 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:45:09,148 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:45:09,149 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-22 02:45:09,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:45:09 BoogieIcfgContainer [2022-11-22 02:45:09,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:45:09,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:45:09,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:45:09,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:45:09,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:44:53" (1/3) ... [2022-11-22 02:45:09,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a1a969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:45:09, skipping insertion in model container [2022-11-22 02:45:09,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:44:58" (2/3) ... [2022-11-22 02:45:09,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71a1a969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:45:09, skipping insertion in model container [2022-11-22 02:45:09,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:45:09" (3/3) ... [2022-11-22 02:45:09,166 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--xen-netback--xen-netback.ko-entry_point.cil.out.i [2022-11-22 02:45:09,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:45:09,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:45:09,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:45:09,288 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30076560, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:45:09,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:45:09,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 1011 states, 652 states have (on average 1.352760736196319) internal successors, (882), 678 states have internal predecessors, (882), 271 states have call successors, (271), 87 states have call predecessors, (271), 86 states have return successors, (265), 258 states have call predecessors, (265), 265 states have call successors, (265) [2022-11-22 02:45:09,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 02:45:09,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:09,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:45:09,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:09,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:09,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1754688490, now seen corresponding path program 1 times [2022-11-22 02:45:09,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:09,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510539103] [2022-11-22 02:45:09,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:09,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:45:09,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:09,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510539103] [2022-11-22 02:45:09,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510539103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:09,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:09,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:45:09,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036532758] [2022-11-22 02:45:09,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:09,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:45:09,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:10,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:45:10,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:45:10,022 INFO L87 Difference]: Start difference. First operand has 1011 states, 652 states have (on average 1.352760736196319) internal successors, (882), 678 states have internal predecessors, (882), 271 states have call successors, (271), 87 states have call predecessors, (271), 86 states have return successors, (265), 258 states have call predecessors, (265), 265 states have call successors, (265) Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:45:11,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:14,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:16,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:17,163 INFO L93 Difference]: Finished difference Result 3025 states and 4282 transitions. [2022-11-22 02:45:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:45:17,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-22 02:45:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:17,232 INFO L225 Difference]: With dead ends: 3025 [2022-11-22 02:45:17,232 INFO L226 Difference]: Without dead ends: 1972 [2022-11-22 02:45:17,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:45:17,287 INFO L413 NwaCegarLoop]: 1708 mSDtfsCounter, 1394 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 2961 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:17,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 2961 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 358 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2022-11-22 02:45:17,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2022-11-22 02:45:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1966. [2022-11-22 02:45:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1269 states have (on average 1.3293932230102443) internal successors, (1687), 1305 states have internal predecessors, (1687), 526 states have call successors, (526), 171 states have call predecessors, (526), 170 states have return successors, (534), 508 states have call predecessors, (534), 524 states have call successors, (534) [2022-11-22 02:45:17,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2747 transitions. [2022-11-22 02:45:17,601 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2747 transitions. Word has length 17 [2022-11-22 02:45:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:17,604 INFO L495 AbstractCegarLoop]: Abstraction has 1966 states and 2747 transitions. [2022-11-22 02:45:17,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:45:17,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2747 transitions. [2022-11-22 02:45:17,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-22 02:45:17,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:17,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:45:17,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:45:17,621 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:17,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:17,622 INFO L85 PathProgramCache]: Analyzing trace with hash 974132026, now seen corresponding path program 1 times [2022-11-22 02:45:17,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:17,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289598009] [2022-11-22 02:45:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:17,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:45:18,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:18,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289598009] [2022-11-22 02:45:18,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289598009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:18,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:18,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:45:18,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349318371] [2022-11-22 02:45:18,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:45:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:45:18,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:45:18,010 INFO L87 Difference]: Start difference. First operand 1966 states and 2747 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-22 02:45:19,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:21,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:24,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:24,564 INFO L93 Difference]: Finished difference Result 4675 states and 6512 transitions. [2022-11-22 02:45:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:45:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2022-11-22 02:45:24,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:24,581 INFO L225 Difference]: With dead ends: 4675 [2022-11-22 02:45:24,582 INFO L226 Difference]: Without dead ends: 2710 [2022-11-22 02:45:24,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:45:24,593 INFO L413 NwaCegarLoop]: 1309 mSDtfsCounter, 513 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:24,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 2504 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-22 02:45:24,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2022-11-22 02:45:24,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 2702. [2022-11-22 02:45:24,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 1752 states have (on average 1.3384703196347032) internal successors, (2345), 1799 states have internal predecessors, (2345), 702 states have call successors, (702), 248 states have call predecessors, (702), 247 states have return successors, (710), 681 states have call predecessors, (710), 700 states have call successors, (710) [2022-11-22 02:45:24,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 3757 transitions. [2022-11-22 02:45:24,715 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 3757 transitions. Word has length 84 [2022-11-22 02:45:24,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:24,716 INFO L495 AbstractCegarLoop]: Abstraction has 2702 states and 3757 transitions. [2022-11-22 02:45:24,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-22 02:45:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 3757 transitions. [2022-11-22 02:45:24,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:45:24,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:24,727 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-22 02:45:24,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:45:24,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:24,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash -97927899, now seen corresponding path program 1 times [2022-11-22 02:45:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:24,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264490422] [2022-11-22 02:45:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:24,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:25,319 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-22 02:45:25,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:25,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264490422] [2022-11-22 02:45:25,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264490422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:25,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:25,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:45:25,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990612039] [2022-11-22 02:45:25,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:25,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:45:25,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:25,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:45:25,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:45:25,323 INFO L87 Difference]: Start difference. First operand 2702 states and 3757 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:45:27,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:30,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:30,849 INFO L93 Difference]: Finished difference Result 5420 states and 7535 transitions. [2022-11-22 02:45:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:45:30,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 144 [2022-11-22 02:45:30,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:30,865 INFO L225 Difference]: With dead ends: 5420 [2022-11-22 02:45:30,865 INFO L226 Difference]: Without dead ends: 2713 [2022-11-22 02:45:30,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:30,878 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 10 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3632 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:30,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3632 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 500 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-11-22 02:45:30,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-11-22 02:45:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2705. [2022-11-22 02:45:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 1755 states have (on average 1.3367521367521367) internal successors, (2346), 1802 states have internal predecessors, (2346), 702 states have call successors, (702), 248 states have call predecessors, (702), 247 states have return successors, (710), 681 states have call predecessors, (710), 700 states have call successors, (710) [2022-11-22 02:45:30,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 3758 transitions. [2022-11-22 02:45:30,991 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 3758 transitions. Word has length 144 [2022-11-22 02:45:30,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:30,993 INFO L495 AbstractCegarLoop]: Abstraction has 2705 states and 3758 transitions. [2022-11-22 02:45:30,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:45:30,994 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 3758 transitions. [2022-11-22 02:45:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-22 02:45:31,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:31,000 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-22 02:45:31,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:45:31,001 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:31,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:31,001 INFO L85 PathProgramCache]: Analyzing trace with hash -735436272, now seen corresponding path program 1 times [2022-11-22 02:45:31,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:31,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449127306] [2022-11-22 02:45:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:31,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-22 02:45:31,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:31,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449127306] [2022-11-22 02:45:31,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449127306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:31,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:31,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:45:31,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575141212] [2022-11-22 02:45:31,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:45:31,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:31,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:45:31,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:45:31,805 INFO L87 Difference]: Start difference. First operand 2705 states and 3758 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:45:34,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:37,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:45:39,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:40,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:40,715 INFO L93 Difference]: Finished difference Result 7182 states and 9964 transitions. [2022-11-22 02:45:40,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:45:40,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 145 [2022-11-22 02:45:40,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:40,744 INFO L225 Difference]: With dead ends: 7182 [2022-11-22 02:45:40,744 INFO L226 Difference]: Without dead ends: 4478 [2022-11-22 02:45:40,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:45:40,762 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 1829 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 220 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1904 SdHoareTripleChecker+Valid, 3805 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:40,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1904 Valid, 3805 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 647 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-22 02:45:40,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4478 states. [2022-11-22 02:45:41,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4478 to 4453. [2022-11-22 02:45:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4453 states, 2883 states have (on average 1.3326396115157821) internal successors, (3842), 2966 states have internal predecessors, (3842), 1157 states have call successors, (1157), 413 states have call predecessors, (1157), 412 states have return successors, (1177), 1118 states have call predecessors, (1177), 1155 states have call successors, (1177) [2022-11-22 02:45:41,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 6176 transitions. [2022-11-22 02:45:41,052 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 6176 transitions. Word has length 145 [2022-11-22 02:45:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:41,053 INFO L495 AbstractCegarLoop]: Abstraction has 4453 states and 6176 transitions. [2022-11-22 02:45:41,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-22 02:45:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 6176 transitions. [2022-11-22 02:45:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-22 02:45:41,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:41,061 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:45:41,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:45:41,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:41,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1046377014, now seen corresponding path program 1 times [2022-11-22 02:45:41,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:41,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488436114] [2022-11-22 02:45:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:41,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-22 02:45:43,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:43,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488436114] [2022-11-22 02:45:43,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488436114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:43,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:43,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:45:43,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057934644] [2022-11-22 02:45:43,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:43,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:45:43,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:43,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:45:43,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:45:43,245 INFO L87 Difference]: Start difference. First operand 4453 states and 6176 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:45:45,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:47,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:49,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:50,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:52,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:54,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:56,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:45:58,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:02,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:03,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:05,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:07,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:09,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:11,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:12,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:14,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:15,900 INFO L93 Difference]: Finished difference Result 10350 states and 14687 transitions. [2022-11-22 02:46:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:46:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 2 states have call successors, (22) Word has length 169 [2022-11-22 02:46:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:15,933 INFO L225 Difference]: With dead ends: 10350 [2022-11-22 02:46:15,934 INFO L226 Difference]: Without dead ends: 5898 [2022-11-22 02:46:15,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:46:15,961 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 266 mSDsluCounter, 10777 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 12363 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:15,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 12363 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1543 Invalid, 4 Unknown, 0 Unchecked, 32.2s Time] [2022-11-22 02:46:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2022-11-22 02:46:16,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 4469. [2022-11-22 02:46:16,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 2893 states have (on average 1.3314898029726927) internal successors, (3852), 2976 states have internal predecessors, (3852), 1157 states have call successors, (1157), 413 states have call predecessors, (1157), 418 states have return successors, (1201), 1124 states have call predecessors, (1201), 1155 states have call successors, (1201) [2022-11-22 02:46:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 6210 transitions. [2022-11-22 02:46:16,273 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 6210 transitions. Word has length 169 [2022-11-22 02:46:16,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:16,276 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 6210 transitions. [2022-11-22 02:46:16,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (22), 5 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-22 02:46:16,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 6210 transitions. [2022-11-22 02:46:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-22 02:46:16,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:16,287 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:16,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:46:16,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:46:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2016249771, now seen corresponding path program 1 times [2022-11-22 02:46:16,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:16,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419603320] [2022-11-22 02:46:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:16,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-11-22 02:46:17,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:17,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419603320] [2022-11-22 02:46:17,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419603320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:17,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:17,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:46:17,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481419632] [2022-11-22 02:46:17,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:17,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:46:17,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:17,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:46:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:46:17,523 INFO L87 Difference]: Start difference. First operand 4469 states and 6210 transitions. Second operand has 6 states, 4 states have (on average 20.0) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-22 02:46:19,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:21,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:23,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:25,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:27,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:30,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:30,999 INFO L93 Difference]: Finished difference Result 8997 states and 12527 transitions. [2022-11-22 02:46:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:46:31,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 20.0) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 183 [2022-11-22 02:46:31,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:31,024 INFO L225 Difference]: With dead ends: 8997 [2022-11-22 02:46:31,024 INFO L226 Difference]: Without dead ends: 4529 [2022-11-22 02:46:31,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:46:31,049 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 9 mSDsluCounter, 4780 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 12 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5981 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:31,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 5981 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 900 Invalid, 4 Unknown, 0 Unchecked, 13.2s Time] [2022-11-22 02:46:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4529 states. [2022-11-22 02:46:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4529 to 4517. [2022-11-22 02:46:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 2923 states have (on average 1.332192952446117) internal successors, (3894), 3006 states have internal predecessors, (3894), 1163 states have call successors, (1163), 425 states have call predecessors, (1163), 430 states have return successors, (1207), 1130 states have call predecessors, (1207), 1161 states have call successors, (1207) [2022-11-22 02:46:31,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 6264 transitions. [2022-11-22 02:46:31,312 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 6264 transitions. Word has length 183 [2022-11-22 02:46:31,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:31,313 INFO L495 AbstractCegarLoop]: Abstraction has 4517 states and 6264 transitions. [2022-11-22 02:46:31,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 20.0) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-11-22 02:46:31,313 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 6264 transitions. [2022-11-22 02:46:31,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-22 02:46:31,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:31,321 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:31,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:46:31,321 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:46:31,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:31,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1168285852, now seen corresponding path program 1 times [2022-11-22 02:46:31,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:31,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7065037] [2022-11-22 02:46:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:31,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:32,473 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-11-22 02:46:32,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:32,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7065037] [2022-11-22 02:46:32,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7065037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:32,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079891461] [2022-11-22 02:46:32,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:32,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:32,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:32,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:32,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:46:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:33,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 3820 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:46:33,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-22 02:46:33,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:46:33,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079891461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:33,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:46:33,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-11-22 02:46:33,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162648788] [2022-11-22 02:46:33,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:33,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:46:33,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:46:33,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:46:33,856 INFO L87 Difference]: Start difference. First operand 4517 states and 6264 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-22 02:46:36,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:38,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:39,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:39,483 INFO L93 Difference]: Finished difference Result 9061 states and 12564 transitions. [2022-11-22 02:46:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:46:39,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 184 [2022-11-22 02:46:39,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:39,507 INFO L225 Difference]: With dead ends: 9061 [2022-11-22 02:46:39,507 INFO L226 Difference]: Without dead ends: 4533 [2022-11-22 02:46:39,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:46:39,527 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 14 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:39,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3633 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 498 Invalid, 2 Unknown, 0 Unchecked, 5.4s Time] [2022-11-22 02:46:39,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2022-11-22 02:46:39,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 4513. [2022-11-22 02:46:39,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 2919 states have (on average 1.3299075025693732) internal successors, (3882), 3002 states have internal predecessors, (3882), 1163 states have call successors, (1163), 425 states have call predecessors, (1163), 430 states have return successors, (1207), 1130 states have call predecessors, (1207), 1161 states have call successors, (1207) [2022-11-22 02:46:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 6252 transitions. [2022-11-22 02:46:39,765 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 6252 transitions. Word has length 184 [2022-11-22 02:46:39,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:39,765 INFO L495 AbstractCegarLoop]: Abstraction has 4513 states and 6252 transitions. [2022-11-22 02:46:39,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (29), 1 states have call predecessors, (29), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-11-22 02:46:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 6252 transitions. [2022-11-22 02:46:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-11-22 02:46:39,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:39,773 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:39,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:39,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:46:39,988 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:46:39,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash -728526464, now seen corresponding path program 1 times [2022-11-22 02:46:39,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:39,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617019031] [2022-11-22 02:46:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:39,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-22 02:46:41,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:41,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617019031] [2022-11-22 02:46:41,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617019031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:41,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:41,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:46:41,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192753865] [2022-11-22 02:46:41,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:41,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:46:41,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:41,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:46:41,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:46:41,434 INFO L87 Difference]: Start difference. First operand 4513 states and 6252 transitions. Second operand has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:46:44,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:46,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:48,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:49,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:51,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:53,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-22 02:46:55,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 02:46:57,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:57,268 INFO L93 Difference]: Finished difference Result 11013 states and 15565 transitions. [2022-11-22 02:46:57,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:46:57,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 202 [2022-11-22 02:46:57,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:57,301 INFO L225 Difference]: With dead ends: 11013 [2022-11-22 02:46:57,301 INFO L226 Difference]: Without dead ends: 6501 [2022-11-22 02:46:57,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:46:57,322 INFO L413 NwaCegarLoop]: 1680 mSDtfsCounter, 783 mSDsluCounter, 7859 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 9539 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:57,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 9539 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1169 Invalid, 3 Unknown, 0 Unchecked, 15.4s Time] [2022-11-22 02:46:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2022-11-22 02:46:57,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 4951. [2022-11-22 02:46:57,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 3201 states have (on average 1.3273976882224305) internal successors, (4249), 3288 states have internal predecessors, (4249), 1254 states have call successors, (1254), 484 states have call predecessors, (1254), 495 states have return successors, (1304), 1227 states have call predecessors, (1304), 1252 states have call successors, (1304) [2022-11-22 02:46:57,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 6807 transitions. [2022-11-22 02:46:57,735 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 6807 transitions. Word has length 202 [2022-11-22 02:46:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:57,736 INFO L495 AbstractCegarLoop]: Abstraction has 4951 states and 6807 transitions. [2022-11-22 02:46:57,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-22 02:46:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 6807 transitions. [2022-11-22 02:46:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-11-22 02:46:57,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:57,746 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:57,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:46:57,746 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:46:57,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:57,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1249826970, now seen corresponding path program 1 times [2022-11-22 02:46:57,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:57,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538964293] [2022-11-22 02:46:57,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:57,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:59,099 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-22 02:46:59,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:59,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538964293] [2022-11-22 02:46:59,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538964293] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:59,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176810460] [2022-11-22 02:46:59,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:59,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:59,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:59,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:59,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3736a3f9-2416-409e-a09a-e345d54f90e5/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:47:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:01,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 3940 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:47:01,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:47:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-22 02:47:02,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:47:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-22 02:47:02,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176810460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:47:02,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671149304] [2022-11-22 02:47:02,559 INFO L159 IcfgInterpreter]: Started Sifa with 146 locations of interest [2022-11-22 02:47:02,559 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:47:02,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:47:02,573 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:47:02,573 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:47:08,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 36 select indices, 36 select index equivalence classes, 666 disjoint index pairs (out of 630 index pairs), introduced 36 new quantified variables, introduced 0 case distinctions, treesize of input 1046 treesize of output 935 [2022-11-22 02:47:10,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:10,521 INFO L217 Elim1Store]: Index analysis took 144 ms [2022-11-22 02:47:10,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 382 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 351 [2022-11-22 02:47:11,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 379 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 335 [2022-11-22 02:47:11,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:11,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 379 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 335 [2022-11-22 02:47:12,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:12,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,058 INFO L217 Elim1Store]: Index analysis took 142 ms [2022-11-22 02:47:13,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 380 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 273 treesize of output 342 [2022-11-22 02:47:13,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:13,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 380 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 344 [2022-11-22 02:47:14,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:47:14,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 379 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 335 [2022-11-22 02:48:01,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 02:48:01,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7